195  
FNUS55 KGJT 210253  
FWFGJT  
 
FIRE WEATHER PLANNING FORECAST FOR WRN COLORADO AND ERN UTAH  
NATIONAL WEATHER SERVICE GRAND JUNCTION CO  
853 PM MDT WED MAY 20 2026  
 
...RED FLAG WARNING IN EFFECT FROM 1 PM UNTIL 7 PM MDT THURSDAY  
FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS FOR COLORADO FIRE  
WEATHER ZONE 290, AS WELL AS UTAH FIRE WEATHER ZONE 490...  
   
DISCUSSION
 
A DISTURBANCE WILL BRING GREATER CHANCES OF WETTING RAIN  
AND THUNDERSTORMS TO NORTHWEST CO AND NORTHEAST UT TOMORROW SPREADING  
INTO CENTRAL AREAS LATER IN THE DAY. CRITICAL FIRE WEATHER  
CONDITIONS WILL OCCUR IN UT ZONE 490 AND CO ZONE 290. RED FLAG  
WARNINGS HAVE BEEN ISSUED IN THOSE ZONES, WITH LOCALIZED CRITICAL  
FIRE WEATHER CONDITIONS ELSEWHERE. DRY AND WARMER WEATHER RETURNS  
THIS WEEKEND.  
 
...GUSTY ERRATIC WINDS CAN BE EXPECTED NEAR ANY SHOWERS  
OR THUNDERSTORMS...   
..THE SMOKE DATA IS CALCULATED FROM AN AVERAGE AT 6000 FEET MSL
 
 
COZ200-211900-  
LITTLE SNAKE FORECAST AREA-  
853 PM MDT WED MAY 20 2026  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (50-60%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....34-44 F.  
MAX HUMIDITY........55-65% NEAR 6000 FEET  
48-58% NEAR 8000 FEET.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 10 TO 15 MPH INCREASING TO 20 TO 25 MPH  
AFTER MIDNIGHT.  
MIXING HEIGHT.......3000 FT AGL UNTIL 2100, THEN 1000 FT AGL.  
TRANSPORT WINDS.....WEST 5 MPH UNTIL 2400, THEN SOUTH.  
SMOKE DISPERSAL.....POOR.  
   
THURSDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (50-60%) UNTIL 1200, THEN MOSTLY  
CLOUDY (60-70%). NEAR 6000 FEET, ISOLATED  
SHOWERS UNTIL 1200, THEN SCATTERED SHOWERS AND  
THUNDERSTORMS. NEAR 8000 FEET, SCATTERED  
SHOWERS UNTIL 1200, NUMEROUS SHOWERS AND  
SCATTERED THUNDERSTORMS AFTER 1200.  
CHC OF LIGHTNING....50 PERCENT.  
MAX TEMPERATURE.....55-65 F NEAR 6000 FEET  
43-53 F NEAR 8000 FEET.  
MIN HUMIDITY........30-40% NEAR 6000 FEET  
40-50% NEAR 8000 FEET.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
WEST 10 TO 15 MPH WITH GUSTS TO 30 MPH IN THE  
AFTERNOON.  
CWR.................30 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 30 MPH INCREASING TO 30 TO 40 MPH IN  
THE AFTERNOON.  
MIXING HEIGHT.......1500 FT AGL UNTIL 0900, THEN 7000 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH UNTIL 1200, THEN WEST 20  
TO 25 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900, THEN FAIR UNTIL 1200, THEN  
EXCELLENT UNTIL 1500, THEN GOOD.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (50-60%). ISOLATED SHOWERS AND  
THUNDERSTORMS UNTIL 2400.  
CHC OF LIGHTNING....20 PERCENT.  
MIN TEMPERATURE.....28-38 F.  
MAX HUMIDITY........77-92%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................10 PERCENT.  
15K FT MSL WINDS....WEST 25 TO 35 MPH BECOMING NORTHWEST 20 TO 25  
MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......4500 FT AGL UNTIL 2100, THEN 1500 FT AGL.  
TRANSPORT WINDS.....NORTH 5 TO 10 MPH.  
SMOKE DISPERSAL.....FAIR UNTIL 2100, THEN POOR.  
   
FRIDAY
 
 
SKY/WEATHER.........NEAR 6000 FEET, PARTLY CLOUDY (50-60%) UNTIL  
1200, THEN MOSTLY CLOUDY (60-70%). NEAR 8000  
FEET, PARTLY CLOUDY (40-50%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....54-64 F NEAR 6000 FEET  
44-54 F NEAR 8000 FEET.  
MIN HUMIDITY........25-35%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BECOMING  
UPSLOPE/UPVALLEY 4 TO 8 MPH BY 1100.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......7000 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 5 MPH UNTIL 1200, THEN NORTHWEST.  
SMOKE DISPERSAL.....POOR.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
MOSTLY CLEAR. LOWS 33-43. HIGHS 65-75. WINDS LESS  
THAN 15 MPH.    
SUNDAY
 
MOSTLY CLEAR. ISOLATED SHOWERS NEAR 6000 FEET AND  
ISOLATED SHOWERS AND THUNDERSTORMS NEAR 8000 FEET. LOWS 37-47.  
HIGHS 72-82. WINDS LESS THAN 15 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. LOWS 41-51. HIGHS 75-85. WINDS LESS  
THAN 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 43-53. HIGHS 68-78.    
WEDNESDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 40-50. HIGHS 68-78.  
 

 
 
COZ201-211900-  
ROUTT FORECAST AREA-  
853 PM MDT WED MAY 20 2026  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....25-35 F.  
MAX HUMIDITY........54-64%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......1000 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 5 MPH UNTIL 2400, THEN SOUTH.  
SMOKE DISPERSAL.....POOR.  
   
THURSDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%) UNTIL 1200, THEN MOSTLY  
CLOUDY (60-70%). NUMEROUS SHOWERS AND SCATTERED  
THUNDERSTORMS AFTER 1200.  
CHC OF LIGHTNING....50 PERCENT.  
MAX TEMPERATURE.....50-60 F.  
MIN HUMIDITY........30-40%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
WEST 10 TO 15 MPH IN THE AFTERNOON. LOCALIZED  
GUSTS UP TO 30 MPH.  
CWR.................50 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 30 MPH INCREASING TO SOUTHWEST 25 TO  
35 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1000 FT AGL UNTIL 0900, THEN 7500 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH UNTIL 1200, THEN WEST 20  
TO 25 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900, THEN VERY GOOD UNTIL 1200,  
THEN EXCELLENT UNTIL 1500, THEN GOOD.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (50-60%). NUMEROUS SHOWERS AND  
ISOLATED THUNDERSTORMS UNTIL 2400.  
CHC OF LIGHTNING....20 PERCENT.  
MIN TEMPERATURE.....23-33 F.  
MAX HUMIDITY........82-97%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 3 TO 6 MPH.  
LOCALIZED GUSTS UP TO 25 MPH IN THE EVENING.  
CWR.................30 PERCENT.  
15K FT MSL WINDS....WEST 30 TO 40 MPH DECREASING TO 20 TO 30 MPH  
AFTER MIDNIGHT.  
MIXING HEIGHT.......2000 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.  
SMOKE DISPERSAL.....POOR.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (50-60%). ISOLATED SHOWERS AND  
THUNDERSTORMS AFTER 1200.  
CHC OF LIGHTNING....10 PERCENT.  
MAX TEMPERATURE.....47-57 F.  
MIN HUMIDITY........32-42%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY WINDS 4 TO 8 MPH. LOCALIZED  
GUSTS UP TO 20 MPH IN THE AFTERNOON.  
CWR.................10 PERCENT.  
15K FT MSL WINDS....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......6500 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 5 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. FAIR AFTER 1200.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
PARTLY CLOUDY. LOWS 27-37. HIGHS 55-65. WINDS LESS  
THAN 15 MPH.    
SUNDAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS  
32-42. HIGHS 63-73. WINDS LESS THAN 15 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 36-46. HIGHS 66-76. WINDS LESS THAN 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. NUMEROUS SHOWERS AND SCATTERED  
THUNDERSTORMS. LOWS 39-49. HIGHS 59-69.    
WEDNESDAY
 
PARTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.  
LOWS 36-46. HIGHS 60-70.  
 

 
 
COZ202-211900-  
WHITE RIVER FORECAST AREA-  
853 PM MDT WED MAY 20 2026  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....31-41 F.  
MAX HUMIDITY........52-62% NEAR 6000 FEET  
42-52% NEAR 8000 FEET.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 25 MPH.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 5 MPH UNTIL 2400, THEN SOUTHEAST.  
SMOKE DISPERSAL.....POOR.  
   
THURSDAY
 
 
SKY/WEATHER.........NEAR 6000 FEET, PARTLY CLOUDY (40-50%). NEAR  
8000 FEET, PARTLY CLOUDY (40-50%) UNTIL 1200,  
THEN MOSTLY CLOUDY (60-70%). SCATTERED SHOWERS  
AND THUNDERSTORMS AFTER 1200.  
CHC OF LIGHTNING....40 PERCENT.  
MAX TEMPERATURE.....57-67 F NEAR 6000 FEET  
49-59 F NEAR 8000 FEET.  
MIN HUMIDITY........22-32%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
WEST 10 TO 15 MPH WITH GUSTS TO 30 MPH IN THE  
AFTERNOON.  
CWR.................10 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 30 MPH INCREASING TO 25 TO 35 MPH IN  
THE AFTERNOON.  
MIXING HEIGHT.......1000 FT AGL UNTIL 0900, THEN 8500 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH UNTIL 1200, THEN WEST 20  
TO 25 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900, THEN GOOD UNTIL 1200, THEN  
EXCELLENT UNTIL 1500, THEN VERY GOOD.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (50-60%). NEAR 6000 FEET,  
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS  
UNTIL 2400. NEAR 8000 FEET, NUMEROUS SHOWERS  
AND ISOLATED THUNDERSTORMS UNTIL 2400.  
CHC OF LIGHTNING....20 PERCENT.  
MIN TEMPERATURE.....27-37 F.  
MAX HUMIDITY........79-94%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................10 PERCENT.  
15K FT MSL WINDS....WEST 30 TO 40 MPH BECOMING NORTHWEST 20 TO 30  
MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......6500 FT AGL UNTIL 2000, THEN 1500 FT AGL.  
TRANSPORT WINDS.....NORTH 5 TO 10 MPH.  
SMOKE DISPERSAL.....GOOD UNTIL 2100, THEN POOR.  
   
FRIDAY
 
 
SKY/WEATHER.........NEAR 6000 FEET, PARTLY CLOUDY (50-60%) UNTIL  
1200, THEN MOSTLY CLOUDY (70-80%). NEAR 8000  
FEET, MOSTLY CLOUDY (60-70%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....54-64 F NEAR 6000 FEET  
46-56 F NEAR 8000 FEET.  
MIN HUMIDITY........21-31% NEAR 6000 FEET  
27-37% NEAR 8000 FEET.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BECOMING  
UPSLOPE/UPVALLEY 4 TO 8 MPH BY 1100.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 25 MPH.  
MIXING HEIGHT.......6500 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH UNTIL 1200, THEN  
NORTHWEST.  
SMOKE DISPERSAL.....POOR UNTIL 0900. FAIR AFTER 1500.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
WARMER. MOSTLY CLEAR. LOWS 33-43. HIGHS 67-77. WINDS  
LESS THAN 15 MPH.    
SUNDAY
 
CLEAR. ISOLATED SHOWERS NEAR 8000 FEET. LOWS 37-47.  
HIGHS 74-84. WINDS LESS THAN 15 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS  
NEAR 8000 FEET. LOWS 41-51. HIGHS 77-87. WINDS LESS THAN 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.  
LOWS 43-53. HIGHS 69-79.    
WEDNESDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 41-51. HIGHS 69-79.  
 

 
 
COZ203-211900-  
LOWER COLORADO RIVER-  
853 PM MDT WED MAY 20 2026  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....35-45 F NEAR 6000 FEET  
29-39 F NEAR 8000 FEET.  
MAX HUMIDITY........42-52%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....NORTH 5 MPH UNTIL 2400, THEN EAST.  
SMOKE DISPERSAL.....POOR.  
   
THURSDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%). ISOLATED SHOWERS AND  
THUNDERSTORMS AFTER 1200.  
CHC OF LIGHTNING....10 PERCENT.  
MAX TEMPERATURE.....64-74 F NEAR 6000 FEET  
54-64 F NEAR 8000 FEET.  
MIN HUMIDITY........14-24%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
WEST 10 TO 15 MPH WITH GUSTS TO 35 MPH IN THE  
AFTERNOON.  
CWR.................10 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 25 MPH INCREASING TO 20 TO 30 MPH IN  
THE AFTERNOON.  
MIXING HEIGHT.......2000 FT AGL UNTIL 1000, THEN 13000 FT AGL.  
TRANSPORT WINDS.....SOUTH 5 TO 10 MPH UNTIL 1200, THEN WEST 20 TO  
25 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. EXCELLENT AFTER 1200.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%). SCATTERED SHOWERS AND  
ISOLATED THUNDERSTORMS UNTIL 2400.  
CHC OF LIGHTNING....10 PERCENT.  
MIN TEMPERATURE.....34-44 F NEAR 6000 FEET  
28-38 F NEAR 8000 FEET.  
MAX HUMIDITY........66-81%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 3 TO 6 MPH.  
LOCALIZED GUSTS UP TO 40 MPH DECREASING TO 20  
MPH AFTER MIDNIGHT.  
CWR.................20 PERCENT.  
15K FT MSL WINDS....WEST 30 TO 40 MPH.  
MIXING HEIGHT.......10500 FT AGL UNTIL 2000. 1000 FT AGL AFTER  
2100.  
TRANSPORT WINDS.....NORTH 5 TO 10 MPH.  
SMOKE DISPERSAL.....GOOD UNTIL 2100, THEN POOR.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%) UNTIL 1200, THEN MOSTLY  
CLOUDY (70-80%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....60-70 F NEAR 6000 FEET  
51-61 F NEAR 8000 FEET.  
MIN HUMIDITY........16-26%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BECOMING  
UPSLOPE/UPVALLEY 4 TO 8 MPH BY 1100.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 30 MPH DECREASING TO 20 TO 25 MPH IN  
THE AFTERNOON.  
MIXING HEIGHT.......8000 FT AGL.  
TRANSPORT WINDS.....NORTH 5 MPH UNTIL 1200, THEN WEST.  
SMOKE DISPERSAL.....POOR UNTIL 0900. FAIR AFTER 1200.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
MOSTLY CLEAR. LOWS 38-48. HIGHS 69-79. WINDS LESS  
THAN 15 MPH.    
SUNDAY
 
CLEAR. LOWS 42-52. HIGHS 75-85. WINDS LESS THAN 15 MPH.   
MEMORIAL DAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 46-56. HIGHS 77-87. WINDS LESS THAN 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.  
LOWS 48-58. HIGHS 69-79.    
WEDNESDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 44-54. HIGHS 72-82.  
 

 
 
COZ205-211900-  
COLORADO RIVER HEADWATERS-  
853 PM MDT WED MAY 20 2026  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....28-38 F.  
MAX HUMIDITY........57-67%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 25 MPH.  
MIXING HEIGHT.......1000 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 5 MPH UNTIL 2400, THEN SOUTHEAST.  
SMOKE DISPERSAL.....POOR.  
   
THURSDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%). ISOLATED SHOWERS AND  
THUNDERSTORMS AFTER 1200.  
CHC OF LIGHTNING....20 PERCENT.  
MAX TEMPERATURE.....56-66 F.  
MIN HUMIDITY........21-31%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
WEST 10 TO 15 MPH WITH GUSTS TO 35 MPH IN THE  
AFTERNOON.  
CWR.................10 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 30 MPH INCREASING TO SOUTHWEST 25 TO  
35 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1500 FT AGL UNTIL 0900, THEN 10500 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH UNTIL 1200, THEN WEST 20  
TO 30 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. EXCELLENT AFTER 1200.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%). SCATTERED SHOWERS AND  
ISOLATED THUNDERSTORMS UNTIL 2400, ISOLATED  
SHOWERS AFTER 2400.  
CHC OF LIGHTNING....20 PERCENT.  
MIN TEMPERATURE.....26-36 F.  
MAX HUMIDITY........76-91%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 3 TO 6 MPH.  
LOCALIZED GUSTS UP TO 30 MPH IN THE EVENING.  
CWR.................40 PERCENT.  
15K FT MSL WINDS....WEST 30 TO 40 MPH.  
MIXING HEIGHT.......5000 FT AGL UNTIL 2100, THEN 1000 FT AGL.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH UNTIL 2400, THEN 5 MPH.  
SMOKE DISPERSAL.....GOOD UNTIL 2100, THEN POOR.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%) UNTIL 1200, THEN MOSTLY  
CLOUDY (70-80%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....54-64 F.  
MIN HUMIDITY........21-31%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY WINDS 4 TO 8 MPH. LOCALIZED  
GUSTS UP TO 25 MPH IN THE AFTERNOON.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 30 MPH DECREASING TO 20 TO 25 MPH IN  
THE AFTERNOON.  
MIXING HEIGHT.......7500 FT AGL.  
TRANSPORT WINDS.....WEST 5 MPH UNTIL 1200, THEN 10 TO 15 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. GOOD AFTER 1200.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 30-40. HIGHS 59-69. WINDS LESS THAN 15 MPH.    
SUNDAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS. LOWS  
32-42. HIGHS 67-77. WINDS LESS THAN 15 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 36-46. HIGHS 69-79. WINDS LESS THAN 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. NUMEROUS SHOWERS AND SCATTERED  
THUNDERSTORMS. LOWS 38-48. HIGHS 61-71.    
WEDNESDAY
 
PARTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 36-46. HIGHS 63-73.  
 

 
 
COZ290-211900-  
PARADOX VALLEY FORECAST AREA-  
853 PM MDT WED MAY 20 2026  
 
...RED FLAG WARNING IN EFFECT FROM 1 PM UNTIL 7 PM MDT THURSDAY  
FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS...  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (20-30%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....33-43 F NEAR 6000 FEET  
29-39 F NEAR 8000 FEET.  
MAX HUMIDITY........40-50% NEAR 6000 FEET  
48-58% NEAR 8000 FEET.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....NORTH 5 MPH UNTIL 2400, THEN EAST.  
SMOKE DISPERSAL.....POOR.  
   
THURSDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%) UNTIL 1200, THEN MOSTLY  
SUNNY (20-30%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....66-76 F NEAR 6000 FEET  
58-68 F NEAR 8000 FEET.  
MIN HUMIDITY........11-16%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
WEST 10 TO 15 MPH WITH GUSTS TO 30 MPH IN THE  
AFTERNOON.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 25 MPH.  
MIXING HEIGHT.......1000 FT AGL UNTIL 0900. 13000 FT AGL AFTER  
1000.  
TRANSPORT WINDS.....SOUTH 5 TO 10 MPH UNTIL 1200, THEN WEST 20 TO  
25 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. EXCELLENT AFTER 1200.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....32-42 F NEAR 6000 FEET  
30-40 F NEAR 8000 FEET.  
MAX HUMIDITY........51-61% NEAR 6000 FEET  
57-72% NEAR 8000 FEET.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 3 TO 6 MPH.  
LOCALIZED GUSTS UP TO 30 MPH DECREASING TO 20  
MPH AFTER MIDNIGHT.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 30 MPH INCREASING TO 25 TO 35 MPH  
AFTER MIDNIGHT.  
MIXING HEIGHT.......12000 FT AGL UNTIL 2000, THEN 1000 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH UNTIL 2400, THEN NORTH.  
SMOKE DISPERSAL.....VERY GOOD UNTIL 2100, THEN POOR.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%) UNTIL 1200, THEN MOSTLY  
CLOUDY (70-80%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....62-72 F NEAR 6000 FEET  
54-64 F NEAR 8000 FEET.  
MIN HUMIDITY........13-23%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY WINDS 4 TO 8 MPH. LOCALIZED  
GUSTS UP TO 20 MPH IN THE AFTERNOON.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 25 TO 35 MPH DECREASING TO 20 TO 25 MPH IN  
THE AFTERNOON.  
MIXING HEIGHT.......1000 FT AGL UNTIL 0900. 9000 FT AGL AFTER 1100.  
TRANSPORT WINDS.....NORTHWEST 5 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. GOOD AFTER 1200.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
MOSTLY CLEAR. LOWS 40-50. HIGHS 71-81. WINDS LESS  
THAN 15 MPH.    
SUNDAY
 
CLEAR. LOWS 42-52. HIGHS 76-86. WINDS LESS THAN 15 MPH.   
MEMORIAL DAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 46-56. HIGHS 78-88. WINDS LESS THAN 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.  
LOWS 47-57. HIGHS 70-80.    
WEDNESDAY
 
MOSTLY CLEAR. ISOLATED SHOWERS NEAR 6000 FEET AND  
ISOLATED SHOWERS AND THUNDERSTORMS NEAR 8000 FEET. LOWS 44-54.  
HIGHS 72-82.  
 

 
 
COZ291-211900-  
NORTHERN SAN JUAN FORECAST AREA-  
853 PM MDT WED MAY 20 2026  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (10-20%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....28-38 F.  
MAX HUMIDITY........52-62%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 20 TO 25 MPH INCREASING TO WEST 20 TO  
30 MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....NORTH 5 MPH UNTIL 2400, THEN SOUTH.  
SMOKE DISPERSAL.....POOR.  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (20-30%) UNTIL 1200, THEN PARTLY  
CLOUDY (30-40%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....56-66 F.  
MIN HUMIDITY........12-22%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
WEST 10 TO 15 MPH IN THE AFTERNOON. LOCALIZED  
GUSTS UP TO 30 MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 25 MPH.  
MIXING HEIGHT.......500 FT AGL UNTIL 0800. 11500 FT AGL AFTER 0900.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH UNTIL 1200, THEN WEST 20  
TO 25 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900, THEN EXCELLENT.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....29-39 F.  
MAX HUMIDITY........58-73%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 30 MPH.  
MIXING HEIGHT.......10000 FT AGL UNTIL 2000, THEN 1000 FT AGL.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH UNTIL 2400, THEN EAST 5 MPH.  
SMOKE DISPERSAL.....VERY GOOD UNTIL 2100, THEN POOR.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%) UNTIL 1200, THEN MOSTLY  
CLOUDY (60-70%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....53-63 F.  
MIN HUMIDITY........17-27%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY WINDS 4 TO 8 MPH. LOCALIZED  
GUSTS UP TO 20 MPH IN THE AFTERNOON.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 30 MPH DECREASING TO 20 TO 25 MPH IN  
THE AFTERNOON.  
MIXING HEIGHT.......500 FT AGL UNTIL 0800, THEN 8500 FT AGL.  
TRANSPORT WINDS.....WEST 5 TO 10 MPH UNTIL 1200, THEN 15 TO 20 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. VERY GOOD AFTER 1200.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS. LOWS 33-43. HIGHS  
61-71. WINDS LESS THAN 15 MPH.    
SUNDAY
 
MOSTLY CLEAR. LOWS 34-44. HIGHS 67-77. WINDS LESS THAN  
15 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 38-48. HIGHS 69-79. WINDS LESS THAN 15 MPH.    
TUESDAY
 
COOLER. MOSTLY CLOUDY. NUMEROUS SHOWERS AND SCATTERED  
THUNDERSTORMS. LOWS 39-49. HIGHS 59-69.    
WEDNESDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 36-46. HIGHS 63-73.  
 

 
 
COZ292-211900-  
NORTH FORK FORECAST AREA-  
853 PM MDT WED MAY 20 2026  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (20-30%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....31-41 F NEAR 6000 FEET  
28-38 F NEAR 8000 FEET.  
MAX HUMIDITY........50-60%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 20 TO 25 MPH.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH UNTIL 2400, THEN  
SOUTHEAST.  
SMOKE DISPERSAL.....POOR.  
   
THURSDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....63-73 F NEAR 6000 FEET  
55-65 F NEAR 8000 FEET.  
MIN HUMIDITY........12-22%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
WEST 10 TO 15 MPH WITH GUSTS TO 30 MPH IN THE  
AFTERNOON.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 30 MPH.  
MIXING HEIGHT.......1000 FT AGL UNTIL 0900. 13500 FT AGL AFTER  
1000.  
TRANSPORT WINDS.....SOUTH 5 TO 10 MPH UNTIL 1200, THEN WEST 20 TO  
25 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. EXCELLENT AFTER 1200.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%). NEAR 8000 FEET,  
ISOLATED SHOWERS UNTIL 2400.  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....30-40 F NEAR 6000 FEET  
28-38 F NEAR 8000 FEET.  
MAX HUMIDITY........61-76%.  
20-FOOT WINDS.......NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS TO 30  
MPH IN THE EVENING BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 25 TO 35 MPH INCREASING TO 30 TO 40 MPH  
AFTER MIDNIGHT.  
MIXING HEIGHT.......11500 FT AGL UNTIL 2000, THEN 1000 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH UNTIL 2400, THEN WEST 5  
MPH.  
SMOKE DISPERSAL.....VERY GOOD UNTIL 2100, THEN POOR.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%) UNTIL 1200, THEN MOSTLY  
CLOUDY (60-70%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....63-73 F NEAR 6000 FEET  
52-62 F NEAR 8000 FEET.  
MIN HUMIDITY........15-25%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY WINDS 4 TO 8 MPH. LOCALIZED  
GUSTS UP TO 25 MPH IN THE AFTERNOON.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 25 TO 35 MPH DECREASING TO 20 TO 30 MPH IN  
THE AFTERNOON.  
MIXING HEIGHT.......1500 FT AGL UNTIL 0900, THEN 7500 FT AGL.  
TRANSPORT WINDS.....WEST 5 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. GOOD AFTER 1500.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
MOSTLY CLEAR. LOWS 38-48. HIGHS 70-80. WINDS LESS  
THAN 15 MPH.    
SUNDAY
 
CLEAR. LOWS 41-51. HIGHS 77-87. WINDS LESS THAN 15 MPH.   
MEMORIAL DAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS  
NEAR 6000 FEET AND SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS  
NEAR 8000 FEET. LOWS 45-55. HIGHS 79-89. WINDS LESS THAN 15 MPH.    
TUESDAY
 
PARTLY CLOUDY NEAR 6000 FEET AND MOSTLY CLOUDY NEAR  
8000 FEET AND SCATTERED SHOWERS AND THUNDERSTORMS NEAR 6000 FEET  
AND NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS NEAR 8000 FEET.  
LOWS 47-57. HIGHS 70-80.    
WEDNESDAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 43-53. HIGHS 74-84.  
 

 
 
COZ293-211900-  
GUNNISON BASIN FORECAST AREA-  
853 PM MDT WED MAY 20 2026  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (20-30%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....28-38 F.  
MAX HUMIDITY........57-72%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 20 TO 25 MPH.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 5 MPH UNTIL 2400, THEN SOUTHEAST.  
SMOKE DISPERSAL.....POOR.  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (20-30%) UNTIL 1200, THEN PARTLY  
CLOUDY (40-50%). ISOLATED SHOWERS AND  
THUNDERSTORMS AFTER 1200.  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....59-69 F.  
MIN HUMIDITY........15-25%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
WEST 15 TO 20 MPH WITH GUSTS TO 35 MPH IN THE  
AFTERNOON.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 30 MPH.  
MIXING HEIGHT.......1500 FT AGL UNTIL 0900, THEN 12000 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH UNTIL 1200, THEN WEST 20  
TO 30 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. EXCELLENT AFTER 1200.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%). ISOLATED SHOWERS UNTIL  
2400.  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....28-38 F.  
MAX HUMIDITY........67-82%.  
20-FOOT WINDS.......WEST WINDS 10 TO 15 MPH WITH GUSTS TO 35 MPH IN  
THE EVENING BECOMING DOWNSLOPE/DOWNVALLEY 3 TO  
6 MPH BY SUNSET.  
CWR.................20 PERCENT.  
15K FT MSL WINDS....WEST 30 TO 40 MPH INCREASING TO 35 TO 45 MPH  
AFTER MIDNIGHT.  
MIXING HEIGHT.......10000 FT AGL UNTIL 2000, THEN 1000 FT AGL.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH UNTIL 2400, THEN NORTHWEST 5  
TO 10 MPH.  
SMOKE DISPERSAL.....VERY GOOD UNTIL 2100, THEN POOR.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%) UNTIL 1200, THEN MOSTLY  
CLOUDY (70-80%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....58-68 F.  
MIN HUMIDITY........16-26%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
WEST 10 TO 15 MPH WITH GUSTS TO 30 MPH IN THE  
AFTERNOON.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 25 TO 35 MPH DECREASING TO 20 TO 30 MPH IN  
THE AFTERNOON.  
MIXING HEIGHT.......6000 FT AGL UNTIL 1300, THEN 8500 FT AGL.  
TRANSPORT WINDS.....WEST 5 TO 10 MPH UNTIL 1200, THEN 15 TO 20 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. VERY GOOD AFTER 1200.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
PARTLY CLOUDY. LOWS 31-41. HIGHS 61-71. WEST WINDS  
10 TO 20 MPH WITH GUSTS TO 30 MPH.    
SUNDAY
 
CLEAR. LOWS 31-41. HIGHS 68-78. WINDS LESS THAN 15 MPH.   
MEMORIAL DAY
 
MOSTLY CLEAR. SCATTERED SHOWERS AND  
THUNDERSTORMS. LOWS 35-45. HIGHS 69-79. WINDS LESS THAN 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. NUMEROUS SHOWERS AND SCATTERED  
THUNDERSTORMS. LOWS 37-47. HIGHS 60-70.    
WEDNESDAY
 
PARTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 34-44. HIGHS 63-73.  
 

 
 
COZ207-211900-  
SOUTHWEST COLORADO LOWER FORECAST AREA-  
853 PM MDT WED MAY 20 2026  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (10-20%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....35-45 F.  
MAX HUMIDITY........41-51%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 20 TO 25 MPH.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....NORTH 5 TO 10 MPH UNTIL 2400, THEN EAST.  
SMOKE DISPERSAL.....POOR.  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (20-30%) UNTIL 1200, THEN PARTLY  
CLOUDY (30-40%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....69-79 F.  
MIN HUMIDITY........8-13%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
WEST 10 TO 15 MPH WITH GUSTS TO 35 MPH IN THE  
AFTERNOON.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 25 MPH.  
MIXING HEIGHT.......500 FT AGL UNTIL 0900. 13000 FT AGL AFTER 1000.  
TRANSPORT WINDS.....SOUTH 5 TO 10 MPH UNTIL 1200, THEN WEST 15 TO  
20 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. EXCELLENT AFTER 1200.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%) UNTIL 2400, THEN CLEAR  
(0-10%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....39-49 F.  
MAX HUMIDITY........44-54%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 3 TO 6 MPH.  
LOCALIZED GUSTS UP TO 30 MPH.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 25 MPH.  
MIXING HEIGHT.......11500 FT AGL UNTIL 2000, THEN 1000 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH UNTIL 2400, THEN NORTH.  
SMOKE DISPERSAL.....VERY GOOD UNTIL 2100, THEN POOR.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%) UNTIL 1200, THEN MOSTLY  
CLOUDY (60-70%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....68-78 F.  
MIN HUMIDITY........11-16%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
NORTHWEST 10 TO 15 MPH WITH GUSTS TO 30 MPH IN  
THE AFTERNOON.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 25 MPH.  
MIXING HEIGHT.......1500 FT AGL UNTIL 0900. 11000 FT AGL AFTER  
1200.  
TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. VERY GOOD AFTER 1200.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
MOSTLY CLEAR. LOWS 38-48. HIGHS 74-84. WINDS LESS  
THAN 15 MPH.    
SUNDAY
 
CLEAR. LOWS 40-50. HIGHS 79-89. WINDS LESS THAN 15 MPH.   
MEMORIAL DAY
 
MOSTLY CLEAR. LOWS 43-53. HIGHS 79-89. WINDS LESS  
THAN 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.  
LOWS 44-54. HIGHS 71-81.    
WEDNESDAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 41-51. HIGHS 74-84.  
 

 
 
COZ294-211900-  
SOUTHWEST COLORADO UPPER WEST FORECAST AREA-  
853 PM MDT WED MAY 20 2026  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........CLEAR (0-10%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....29-39 F.  
MAX HUMIDITY........43-53%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 25 MPH.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....NORTH 5 TO 10 MPH UNTIL 2400, THEN EAST.  
SMOKE DISPERSAL.....POOR.  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (20-30%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....55-65 F.  
MIN HUMIDITY........12-17%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
SOUTHWEST 10 TO 15 MPH WITH GUSTS TO 35 MPH IN  
THE AFTERNOON.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 25 MPH.  
MIXING HEIGHT.......1500 FT AGL UNTIL 0900, THEN 12000 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH UNTIL 1200, THEN WEST 15  
TO 20 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. EXCELLENT AFTER 1200.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%) UNTIL 2400, THEN CLEAR  
(0-10%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....31-41 F.  
MAX HUMIDITY........47-57%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 25 MPH.  
MIXING HEIGHT.......11000 FT AGL UNTIL 2000, THEN 1000 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH UNTIL 2400, THEN NORTH.  
SMOKE DISPERSAL.....VERY GOOD UNTIL 2100, THEN POOR.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%) UNTIL 1200, THEN MOSTLY  
CLOUDY (70-80%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....55-65 F.  
MIN HUMIDITY........15-25%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BECOMING  
UPSLOPE/UPVALLEY 4 TO 8 MPH BY 1100.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 25 MPH.  
MIXING HEIGHT.......500 FT AGL UNTIL 0800. 9500 FT AGL AFTER 0900.  
TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. VERY GOOD AFTER 1200.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
PARTLY CLOUDY. LOWS 33-43. HIGHS 62-72. WINDS LESS  
THAN 15 MPH.    
SUNDAY
 
CLEAR. LOWS 35-45. HIGHS 67-77. WINDS LESS THAN 15 MPH.   
MEMORIAL DAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 38-48. HIGHS 68-78. WINDS LESS THAN 15 MPH.    
TUESDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.  
LOWS 40-50. HIGHS 59-69.    
WEDNESDAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 37-47. HIGHS 61-71.  
 

 
 
COZ295-211900-  
SOUTHWEST COLORADO UPPER EAST FORECAST AREA-  
853 PM MDT WED MAY 20 2026  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........CLEAR (0-10%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....30-40 F.  
MAX HUMIDITY........44-54%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....SOUTHWEST 20 TO 30 MPH.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH UNTIL 2400, THEN NORTH.  
SMOKE DISPERSAL.....POOR.  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (20-30%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....62-72 F.  
MIN HUMIDITY........11-16%.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
SOUTHWEST 10 TO 15 MPH WITH GUSTS TO 30 MPH IN  
THE AFTERNOON.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 30 MPH DECREASING TO 20 TO 25 MPH IN  
THE AFTERNOON.  
MIXING HEIGHT.......1500 FT AGL UNTIL 0900, THEN 12000 FT AGL.  
TRANSPORT WINDS.....WEST 5 TO 10 MPH UNTIL 1200, THEN 20 TO 25 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. EXCELLENT AFTER 1200.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (10-20%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....32-42 F.  
MAX HUMIDITY........44-54%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 30 MPH.  
MIXING HEIGHT.......10000 FT AGL UNTIL 2000, THEN 500 FT AGL.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH UNTIL 2400, THEN NORTH.  
SMOKE DISPERSAL.....VERY GOOD UNTIL 2100, THEN POOR.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (10-20%) UNTIL 1200, THEN PARTLY  
CLOUDY (50-60%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....63-73 F.  
MIN HUMIDITY........13-23%.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY WINDS 4 TO 8 MPH. LOCALIZED  
GUSTS UP TO 20 MPH INCREASING TO 30 MPH IN THE  
AFTERNOON.  
CWR.................0 PERCENT.  
15K FT MSL WINDS....WEST 20 TO 30 MPH DECREASING TO 20 TO 25 MPH IN  
THE AFTERNOON.  
MIXING HEIGHT.......500 FT AGL UNTIL 0800. 11000 FT AGL AFTER 0900.  
TRANSPORT WINDS.....WEST 5 TO 10 MPH UNTIL 1200, THEN 15 TO 20 MPH.  
SMOKE DISPERSAL.....POOR UNTIL 0900. EXCELLENT AFTER 1200.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 34-44. HIGHS 64-74. WINDS LESS THAN 15 MPH.    
SUNDAY
 
MOSTLY CLEAR. LOWS 33-43. HIGHS 69-79. WINDS LESS THAN  
15 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 37-47. HIGHS 69-79. WINDS LESS THAN 15 MPH.    
TUESDAY
 
MOSTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS.  
LOWS 38-48. HIGHS 60-70.    
WEDNESDAY
 
PARTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS. LOWS 35-45. HIGHS 64-74.  
 

 
 
UTZ485-211900-  
EASTERN ASHLEY NATIONAL FOREST-  
853 PM MDT WED MAY 20 2026  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (60-70%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....31-41 F NEAR 7000 FEET  
20-30 F NEAR 10000 FEET.  
24 HR TREND......9 DEGREES WARMER.  
MAX HUMIDITY........57-67% NEAR 7000 FEET  
62-77% NEAR 10000 FEET.  
24 HR TREND......10% WETTER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
MIXING HEIGHT.......3000 FT AGL UNTIL 2100, THEN 500 FT AGL.  
TRANSPORT WINDS.....WEST 5 MPH.  
CLEARING INDEX......LESS THAN 500.  
   
THURSDAY
 
 
SKY/WEATHER.........NEAR 7000 FEET, MOSTLY CLOUDY (60-70%) UNTIL  
1200, THEN PARTLY CLOUDY (50-60%), SCATTERED  
SHOWERS. SCATTERED THUNDERSTORMS AFTER 1200.  
NEAR 10000 FEET, MOSTLY CLOUDY (60-70%),  
SCATTERED THUNDERSTORMS AND SNOW SHOWERS AFTER  
1200. ISOLATED THUNDERSTORMS UNTIL 1200.  
CHC OF LIGHTNING....50 PERCENT.  
MAX TEMPERATURE.....47-57 F NEAR 7000 FEET  
37-47 F NEAR 10000 FEET.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........42-52%.  
24 HR TREND......21% WETTER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY WINDS 4 TO 8 MPH. LOCALIZED  
GUSTS UP TO 20 MPH INCREASING TO 30 MPH IN THE  
AFTERNOON.  
CWR.................50 PERCENT.  
MIXING HEIGHT.......2500 FT AGL UNTIL 1000, THEN 8500 FT AGL.  
TRANSPORT WINDS.....WEST 5 TO 10 MPH UNTIL 1200, THEN 20 TO 25 MPH.  
CLEARING INDEX......LESS THAN 500 UNTIL 0900. 1050 AFTER 1000.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%). NEAR 7000 FEET,  
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS  
UNTIL 2400. NEAR 10000 FEET, ISOLATED  
THUNDERSTORMS UNTIL 2400.  
CHC OF LIGHTNING....20 PERCENT.  
MIN TEMPERATURE.....26-36 F NEAR 7000 FEET  
16-26 F NEAR 10000 FEET.  
24 HR TREND......4 DEGREES COOLER.  
MAX HUMIDITY........69-84% NEAR 7000 FEET  
76-91% NEAR 10000 FEET.  
24 HR TREND......UNCHANGED.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 3 TO 6 MPH.  
LOCALIZED GUSTS UP TO 30 MPH IN THE EVENING.  
CWR.................20 PERCENT.  
MIXING HEIGHT.......5000 FT AGL UNTIL 2000, THEN 1000 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH UNTIL 2400, THEN NORTH 5  
TO 10 MPH.  
CLEARING INDEX......950 UNTIL 2000, THEN LESS THAN 500.  
   
FRIDAY
 
 
SKY/WEATHER.........NEAR 7000 FEET, PARTLY CLOUDY (40-50%),  
ISOLATED SHOWERS AND THUNDERSTORMS AFTER 1200.  
NEAR 10000 FEET, PARTLY CLOUDY (50-60%) UNTIL  
1200, THEN MOSTLY CLOUDY (60-70%), SCATTERED  
SNOW SHOWERS AND ISOLATED THUNDERSTORMS AFTER  
1200.  
CHC OF LIGHTNING....10 PERCENT.  
MAX TEMPERATURE.....50-60 F NEAR 7000 FEET  
40-50 F NEAR 10000 FEET.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........30-40% NEAR 7000 FEET  
38-48% NEAR 10000 FEET.  
24 HR TREND......22% DRIER.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BECOMING  
UPSLOPE/UPVALLEY 4 TO 8 MPH BY 1100.  
CWR.................10 PERCENT.  
MIXING HEIGHT.......6500 FT AGL.  
TRANSPORT WINDS.....WEST 5 MPH.  
CLEARING INDEX......LESS THAN 500 UNTIL 1300, THEN 650.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
WARMER. MOSTLY CLEAR. LOWS 32-42. HIGHS 61-71. WINDS  
LESS THAN 15 MPH.    
SUNDAY
 
MOSTLY CLEAR. SCATTERED SHOWERS AND THUNDERSTORMS .  
LOWS 39-49. HIGHS 67-77. WINDS LESS THAN 15 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS  
. LOWS 42-52. HIGHS 70-80. WINDS LESS THAN 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. SCATTERED SHOWERS AND THUNDERSTORMS .  
LOWS 44-54. HIGHS 62-72.    
WEDNESDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS .  
LOWS 41-51. HIGHS 61-71.  
 

 
 
UTZ486-211900-  
EASTERN UINTA BASIN-  
853 PM MDT WED MAY 20 2026  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........NEAR 5000 FEET, PARTLY CLOUDY (50-60%). NEAR  
8000 FEET, PARTLY CLOUDY (50-60%) UNTIL 2400,  
THEN MOSTLY CLOUDY (60-70%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....34-44 F NEAR 5000 FEET  
27-37 F NEAR 8000 FEET.  
24 HR TREND......7 DEGREES WARMER.  
MAX HUMIDITY........48-58%.  
24 HR TREND......6% WETTER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
MIXING HEIGHT.......2500 FT AGL UNTIL 2100, THEN 500 FT AGL.  
TRANSPORT WINDS.....NORTH 5 MPH.  
CLEARING INDEX......LESS THAN 500.  
   
THURSDAY
 
 
SKY/WEATHER.........NEAR 5000 FEET, PARTLY CLOUDY (50-60%),  
SCATTERED SHOWERS. SCATTERED THUNDERSTORMS  
AFTER 1200. NEAR 8000 FEET, MOSTLY CLOUDY  
(60-70%) UNTIL 1200, THEN PARTLY CLOUDY  
(50-60%), SCATTERED SHOWERS UNTIL 1200, THEN  
NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS.  
CHC OF LIGHTNING....40 PERCENT.  
MAX TEMPERATURE.....56-66 F NEAR 5000 FEET  
43-53 F NEAR 8000 FEET.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........29-39% NEAR 5000 FEET  
41-51% NEAR 8000 FEET.  
24 HR TREND......2% DRIER.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
WEST 10 TO 15 MPH WITH GUSTS TO 30 MPH IN THE  
AFTERNOON.  
CWR.................40 PERCENT.  
MIXING HEIGHT.......3500 FT AGL UNTIL 1100, THEN 9500 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 10 MPH UNTIL 1200, THEN WEST 20  
TO 25 MPH.  
CLEARING INDEX......LESS THAN 500 UNTIL 1000. 1050 AFTER 1100.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%). ISOLATED SHOWERS AND  
THUNDERSTORMS UNTIL 2400.  
CHC OF LIGHTNING....10 PERCENT.  
MIN TEMPERATURE.....29-39 F NEAR 5000 FEET  
21-31 F NEAR 8000 FEET.  
24 HR TREND......5 DEGREES COOLER.  
MAX HUMIDITY........66-81% NEAR 5000 FEET  
74-89% NEAR 8000 FEET.  
24 HR TREND......18% WETTER.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 3 TO 6 MPH.  
LOCALIZED GUSTS UP TO 30 MPH DECREASING TO 20  
MPH AFTER MIDNIGHT.  
CWR.................10 PERCENT.  
MIXING HEIGHT.......7000 FT AGL UNTIL 2000, THEN 1000 FT AGL.  
TRANSPORT WINDS.....NORTH 5 TO 10 MPH.  
CLEARING INDEX......1050 UNTIL 2000, THEN LESS THAN 500.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%) UNTIL 1200, THEN MOSTLY  
CLOUDY (70-80%). NEAR 5000 FEET, ISOLATED  
SHOWERS AFTER 1200. NEAR 8000 FEET, ISOLATED  
SHOWERS AND THUNDERSTORMS AFTER 1200.  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....54-64 F NEAR 5000 FEET  
41-51 F NEAR 8000 FEET.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........26-36%.  
24 HR TREND......9% WETTER.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BECOMING  
UPSLOPE/UPVALLEY 4 TO 8 MPH BY 1100.  
CWR.................0 PERCENT.  
MIXING HEIGHT.......7000 FT AGL.  
TRANSPORT WINDS.....NORTH 5 MPH UNTIL 1200, THEN WEST.  
CLEARING INDEX......LESS THAN 500 UNTIL 1300, THEN 600.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
MOSTLY CLEAR. LOWS 36-46. HIGHS 65-75. WINDS LESS  
THAN 15 MPH.    
SUNDAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS . LOWS  
42-52. HIGHS 72-82. WINDS LESS THAN 15 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. LOWS 46-56. HIGHS 75-85. WINDS LESS  
THAN 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 48-58. HIGHS 68-78.    
WEDNESDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS .  
LOWS 44-54. HIGHS 67-77.  
 

 
 
UTZ487-211900-  
BOOK CLIFFS-  
853 PM MDT WED MAY 20 2026  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (50-60%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....37-47 F.  
24 HR TREND......7 DEGREES WARMER.  
MAX HUMIDITY........43-53%.  
24 HR TREND......29% DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
MIXING HEIGHT.......1000 FT AGL.  
TRANSPORT WINDS.....EAST 5 MPH UNTIL 2400, THEN SOUTH.  
CLEARING INDEX......LESS THAN 500.  
   
THURSDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%). NEAR 5000 FEET,  
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS  
AFTER 1200. NEAR 8000 FEET, ISOLATED SHOWERS  
AND THUNDERSTORMS AFTER 1200.  
CHC OF LIGHTNING....20 PERCENT.  
MAX TEMPERATURE.....61-71 F NEAR 5000 FEET  
55-65 F NEAR 8000 FEET.  
24 HR TREND......4 DEGREES WARMER.  
MIN HUMIDITY........17-27%.  
24 HR TREND......5% WETTER.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
WEST 10 TO 15 MPH WITH GUSTS TO 35 MPH IN THE  
AFTERNOON.  
CWR.................10 PERCENT.  
MIXING HEIGHT.......1000 FT AGL UNTIL 0900, THEN 10500 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH UNTIL 1200, THEN WEST 20  
TO 25 MPH.  
CLEARING INDEX......LESS THAN 500 UNTIL 0900. 1050 AFTER 1000.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....34-44 F NEAR 5000 FEET  
27-37 F NEAR 8000 FEET.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........71-86%.  
24 HR TREND......32% WETTER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
MIXING HEIGHT.......8500 FT AGL UNTIL 2000. 1000 FT AGL AFTER 2100.  
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH UNTIL 2400, THEN  
NORTHEAST 5 TO 10 MPH.  
CLEARING INDEX......1050 UNTIL 2000. LESS THAN 500 AFTER 2100.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (50-60%) UNTIL 1200, THEN MOSTLY  
CLOUDY (70-80%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....58-68 F NEAR 5000 FEET  
51-61 F NEAR 8000 FEET.  
24 HR TREND......4 DEGREES COOLER.  
MIN HUMIDITY........20-30%.  
24 HR TREND......1% WETTER.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BECOMING  
UPSLOPE/UPVALLEY 4 TO 8 MPH BY 1100.  
CWR.................0 PERCENT.  
MIXING HEIGHT.......7000 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH UNTIL 1200, THEN  
NORTHWEST.  
CLEARING INDEX......600.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
MOSTLY CLEAR. LOWS 36-46. HIGHS 68-78. WINDS LESS  
THAN 15 MPH.    
SUNDAY
 
MOSTLY CLEAR. LOWS 42-52. HIGHS 75-85. WINDS LESS THAN  
15 MPH.    
MEMORIAL DAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS  
NEAR 8000 FEET. LOWS 46-56. HIGHS 77-87. WINDS LESS THAN 15 MPH.   
TUESDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS .  
LOWS 49-59. HIGHS 69-79.    
WEDNESDAY
 
MOSTLY CLEAR. ISOLATED SHOWERS. LOWS 45-55. HIGHS  
69-79.  
 

 
 
UTZ490-211900-  
COLORADO RIVER BASIN-  
853 PM MDT WED MAY 20 2026  
 
...RED FLAG WARNING IN EFFECT FROM 1 PM UNTIL 7 PM MDT THURSDAY  
FOR GUSTY WINDS, LOW HUMIDITY AND DRY FUELS...  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....38-48 F.  
24 HR TREND......5 DEGREES WARMER.  
MAX HUMIDITY........36-46%.  
24 HR TREND......21% DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
MIXING HEIGHT.......1000 FT AGL.  
TRANSPORT WINDS.....WEST 5 MPH UNTIL 2400, THEN EAST.  
CLEARING INDEX......LESS THAN 500.  
   
THURSDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%). NEAR 7000 FEET,  
ISOLATED SHOWERS AND THUNDERSTORMS AFTER 1200.  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....72-82 F NEAR 5000 FEET  
60-70 F NEAR 7000 FEET.  
24 HR TREND......7 DEGREES WARMER.  
MIN HUMIDITY........11-16%.  
24 HR TREND......UNCHANGED.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY WINDS 4 TO 8 MPH BECOMING  
WEST 10 TO 15 MPH WITH GUSTS TO 30 MPH IN THE  
AFTERNOON.  
CWR.................0 PERCENT.  
MIXING HEIGHT.......2000 FT AGL UNTIL 1000, THEN 13000 FT AGL.  
TRANSPORT WINDS.....SOUTH 5 TO 10 MPH UNTIL 1200, THEN WEST 20 TO  
25 MPH.  
CLEARING INDEX......LESS THAN 500 UNTIL 1000. 1050 AFTER 1100.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (20-30%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....38-48 F.  
24 HR TREND......UNCHANGED.  
MAX HUMIDITY........53-63%.  
24 HR TREND......18% WETTER.  
20-FOOT WINDS.......NORTHWEST WINDS 10 TO 15 MPH IN THE EVENING  
BECOMING DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY  
SUNSET. LOCALIZED GUSTS UP TO 30 MPH.  
CWR.................0 PERCENT.  
MIXING HEIGHT.......10000 FT AGL UNTIL 2000. 1000 FT AGL AFTER  
2100.  
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH UNTIL 2400, THEN  
NORTHEAST 5 TO 10 MPH.  
CLEARING INDEX......1050 UNTIL 2000. LESS THAN 500 AFTER 2100.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%) UNTIL 1200, THEN MOSTLY  
CLOUDY (60-70%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....66-76 F NEAR 5000 FEET  
55-65 F NEAR 7000 FEET.  
24 HR TREND......6 DEGREES COOLER.  
MIN HUMIDITY........13-23%.  
24 HR TREND......6% WETTER.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BECOMING  
UPSLOPE/UPVALLEY 4 TO 8 MPH BY 1100.  
CWR.................0 PERCENT.  
MIXING HEIGHT.......7000 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 5 TO 10 MPH UNTIL 1200, THEN WEST.  
CLEARING INDEX......LESS THAN 500 UNTIL 0900, THEN 650.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
MOSTLY CLEAR. LOWS 43-53. HIGHS 75-85. WINDS LESS  
THAN 15 MPH.    
SUNDAY
 
CLEAR. LOWS 47-57. HIGHS 81-91. WINDS LESS THAN 15 MPH.   
MEMORIAL DAY
 
MOSTLY CLEAR. LOWS 51-61. HIGHS 83-93. WINDS LESS  
THAN 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. ISOLATED SHOWERS AND THUNDERSTORMS.  
LOWS 52-62. HIGHS 75-85.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 48-58. HIGHS 76-86.  
 

 
 
UTZ491-211900-  
SOUTHEAST UTAH-  
853 PM MDT WED MAY 20 2026  
   
REST OF TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (20-30%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....40-50 F NEAR 5000 FEET  
32-42 F NEAR 8000 FEET.  
24 HR TREND......UNCHANGED.  
MAX HUMIDITY........31-41%.  
24 HR TREND......1% DRIER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
MIXING HEIGHT.......1000 FT AGL.  
TRANSPORT WINDS.....NORTH 5 TO 10 MPH UNTIL 2400, THEN EAST.  
CLEARING INDEX......LESS THAN 500.  
   
THURSDAY
 
 
SKY/WEATHER.........NEAR 5000 FEET, MOSTLY SUNNY (20-30%). NEAR  
8000 FEET, PARTLY CLOUDY (30-40%) UNTIL 1200,  
THEN MOSTLY SUNNY (20-30%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....74-84 F NEAR 5000 FEET  
56-66 F NEAR 8000 FEET.  
24 HR TREND......4 DEGREES WARMER.  
MIN HUMIDITY........7-12% NEAR 5000 FEET  
12-22% NEAR 8000 FEET.  
24 HR TREND......2% DRIER.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BECOMING  
UPSLOPE/UPVALLEY 4 TO 8 MPH BY 1100.  
CWR.................0 PERCENT.  
MIXING HEIGHT.......1500 FT AGL UNTIL 1000, THEN 13500 FT AGL.  
TRANSPORT WINDS.....SOUTH 5 MPH UNTIL 1200, THEN WEST 15 TO 20 MPH.  
CLEARING INDEX......LESS THAN 500 UNTIL 1000. 1050 AFTER 1100.  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40%).  
CHC OF LIGHTNING....0 PERCENT.  
MIN TEMPERATURE.....44-54 F NEAR 5000 FEET  
35-45 F NEAR 8000 FEET.  
24 HR TREND......4 DEGREES WARMER.  
MAX HUMIDITY........35-45% NEAR 5000 FEET  
44-54% NEAR 8000 FEET.  
24 HR TREND......2% WETTER.  
20-FOOT WINDS.......UPSLOPE/UPVALLEY 4 TO 8 MPH BECOMING  
DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BY SUNSET.  
CWR.................0 PERCENT.  
MIXING HEIGHT.......13500 FT AGL UNTIL 2000, THEN 1000 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH.  
CLEARING INDEX......1050 UNTIL 2000. LESS THAN 500 AFTER 2100.  
   
FRIDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50%) UNTIL 1200, THEN MOSTLY  
CLOUDY (70-80%).  
CHC OF LIGHTNING....0 PERCENT.  
MAX TEMPERATURE.....72-82 F NEAR 5000 FEET  
53-63 F NEAR 8000 FEET.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........11-16% NEAR 5000 FEET  
18-28% NEAR 8000 FEET.  
24 HR TREND......3% WETTER.  
20-FOOT WINDS.......DOWNSLOPE/DOWNVALLEY 3 TO 6 MPH BECOMING  
UPSLOPE/UPVALLEY 4 TO 8 MPH BY 1100.  
CWR.................0 PERCENT.  
MIXING HEIGHT.......3500 FT AGL UNTIL 1100, THEN 11500 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 5 TO 10 MPH.  
CLEARING INDEX......LESS THAN 500 UNTIL 1200. 1050 AFTER 1300.  
   
FORECAST FOR DAY 3 THROUGH 7
 
   
SATURDAY
 
MOSTLY CLEAR. LOWS 43-53. HIGHS 77-87. WINDS LESS  
THAN 15 MPH.    
SUNDAY
 
CLEAR. LOWS 46-56. HIGHS 81-91. WINDS LESS THAN 15 MPH.   
MEMORIAL DAY
 
MOSTLY CLEAR. ISOLATED SHOWERS AND THUNDERSTORMS  
. LOWS 48-58. HIGHS 81-91. WINDS LESS THAN 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS NEAR 5000 FEET AND SCATTERED SHOWERS AND  
THUNDERSTORMS NEAR 8000 FEET. LOWS 49-59. HIGHS 75-85.    
WEDNESDAY
 
MOSTLY CLEAR. LOWS 46-56. HIGHS 77-87.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab CO Page
The Nexlab UT Page Main Text Page