149  
FNUS55 KCYS 171004  
FWFCYS  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST WYOMING/WESTERN NEBRASKA  
NATIONAL WEATHER SERVICE CHEYENNE WY  
404 AM MDT TUE JUL 17 2018  
 
...FLASH FLOOD WATCH FROM THIS EVENING THROUGH LATE TONIGHT FOR  
THE NEBRASKA PANHANDLE...  
   
DISCUSSION
 
 
SCATTERED SHOWERS AND THUNDERSTORMS ARE ONCE AGAIN EXPECTED  
ACROSS SOUTHEAST WYOMING THIS AFTERNOON, WITH SCATTERED TO  
NUMEROUS THUNDERSTORMS ALONG AND EAST OF INTERSTATE 25  
THIS EVENING. SOME STRONG TO SEVERE THUNDERSTORMS WILL  
AGAIN BE POSSIBLE WITH SOME STORMS PRODUCING LOCALLY HEAVY  
RAINFALL OVER FAR EASTERN WYOMING AND THE NEBRASKA PANHANDLE  
THIS EVENING. DRIER AND WARMER WEATHER IS EXPECTED WEDNESDAY  
AND THURSDAY WITH INCREASING CONCERNS FOR LOW HUMIDITIES  
AND GUSTY WINDS WEST OF INTERSTATE 25. LOW HUMIDITIES WILL  
OCCUR AGAIN FRIDAY AND SATURDAY WEST OF INTERSTATE 25.  
 
WYZ301-172230-  
NIOBRARA/LOWER ELEVATIONS OF CONVERSE/THUNDER BASIN NATIONAL  
GRASSLAND-  
404 AM MDT TUE JUL 17 2018  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1500, THEN MOSTLY CLOUDY.  
AREAS OF FOG UNTIL 0900. SCATTERED SHOWERS AND  
ISOLATED THUNDERSTORMS AFTER 1200. SOME  
THUNDERSTORMS MAY PRODUCE DAMAGING WINDS, LARGE  
HAIL, AND HEAVY RAINFALL AFTER 1200.  
MAX TEMPERATURE.....82-87.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........35-41 PERCENT.  
24 HR TREND......2 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH.  
MIXING HEIGHT.......2300-3100 FT AGL INCREASING TO 7700-9700 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (23600 KNOT-FT) INCREASING TO GOOD (91700  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY.  
SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS  
UNTIL 2400, THEN ISOLATED SHOWERS AND  
THUNDERSTORMS. SOME THUNDERSTORMS MAY PRODUCE  
DAMAGING WINDS, LARGE HAIL, AND HEAVY RAINFALL  
UNTIL 2400.  
MIN TEMPERATURE.....56-61.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........89-95 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......EAST AROUND 10 MPH AND GUSTY.  
LAL.................4 UNTIL 2400, THEN 2.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 15 MPH.  
MIXING HEIGHT.......1000-1800 FT AGL.  
SMOKE DISPERSAL.....POOR (12000-19200 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....86-91.  
24 HR TREND......4 DEGREES WARMER.  
MIN HUMIDITY........21-27 PERCENT.  
24 HR TREND......16 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH SHIFTING TO THE  
NORTHWEST IN THE AFTERNOON. GUSTS UP TO 25 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH INCREASING TO NORTHWEST  
AROUND 20 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......2000-2900 FT AGL INCREASING TO 10400-12100 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (17100 KNOT-FT) INCREASING TO EXCELLENT  
(190000 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE  
UPPER 80S. NORTHWEST WINDS AROUND 5 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE MID 50S. HIGHS IN THE UPPER 80S.  
EAST WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE  
LOWER 90S. SOUTHEAST WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 60S. HIGHS AROUND 90.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE MID 80S.  
 

 
 
WYZ302-172230-  
NORTH LARAMIE RANGE/MEDICINE BOW NF-  
404 AM MDT TUE JUL 17 2018  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY. AREAS OF FOG UNTIL 0900.  
SCATTERED THUNDERSTORMS AND SHOWERS AFTER 1200.  
SOME THUNDERSTORMS MAY PRODUCE DAMAGING WINDS,  
LARGE HAIL, AND HEAVY RAINFALL AFTER 1200.  
MAX TEMPERATURE.....76-82.  
24 HR TREND......3 DEGREES COOLER.  
MIN HUMIDITY........34-40 PERCENT.  
24 HR TREND......8 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 5 MPH INCREASING TO SOUTHWEST  
AROUND 15 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......2300-3600 FT AGL INCREASING TO 8600-10600 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (14600 KNOT-FT) INCREASING TO VERY GOOD  
(104400 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS AND  
THUNDERSTORMS UNTIL 2400. SOME THUNDERSTORMS  
MAY PRODUCE DAMAGING WINDS, LARGE HAIL, AND  
HEAVY RAINFALL UNTIL 2400.  
MIN TEMPERATURE.....53-58.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........77-83 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......SOUTH AROUND 10 MPH AND GUSTY SHIFTING TO THE  
WEST AFTER MIDNIGHT.  
LAL.................3 UNTIL 2400, THEN 1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 20 MPH BECOMING NORTHWEST AROUND  
10 MPH AFTER MIDNIGHT.  
MIXING HEIGHT.......700-2700 FT AGL.  
SMOKE DISPERSAL.....POOR (5500-30300 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....79-85.  
24 HR TREND......4 DEGREES WARMER.  
MIN HUMIDITY........16-22 PERCENT.  
24 HR TREND......17 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 5 MPH AND GUSTY INCREASING TO  
NORTHWEST AROUND 15 MPH WITH HIGHER GUSTS IN  
THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST 15 TO 20 MPH.  
MIXING HEIGHT.......3500-5500 FT AGL INCREASING TO 10500-11800 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (70100 KNOT-FT) INCREASING TO EXCELLENT  
(208500 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
CLEAR. LOWS IN THE MID 50S. HIGHS IN THE MID 80S.  
NORTHWEST WINDS AROUND 10 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE MID 80S.  
EAST WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE MID  
80S. WINDS GENERALLY LESS THAN 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. LOWS IN THE UPPER 50S. HIGHS IN THE MID  
80S.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE UPPER 70S.  
 

 
 
WYZ303-172230-  
CENTRAL AND NORTHERN CARBON/FERRIS-SEMINOE-SHIRLEY MOUNTAINS-  
404 AM MDT TUE JUL 17 2018  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY. PATCHY FOG UNTIL 0900. SCATTERED  
SHOWERS AND ISOLATED THUNDERSTORMS AFTER 1200.  
SOME THUNDERSTORMS MAY PRODUCE DAMAGING WINDS,  
LARGE HAIL, AND HEAVY RAINFALL AFTER 1200.  
MAX TEMPERATURE.....81-87.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........19-25 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHEAST AROUND 5 MPH AND GUSTY SHIFTING TO  
THE SOUTHWEST WITH HIGHER GUSTS IN THE  
AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 5 MPH INCREASING TO WEST AROUND 15  
MPH IN THE AFTERNOON.  
MIXING HEIGHT.......1600-3600 FT AGL INCREASING TO 12900-14900 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (14000 KNOT-FT) INCREASING TO EXCELLENT  
(195700 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....51-56.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........72-78 PERCENT.  
24 HR TREND......9 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......WEST 5 TO 10 MPH. GUSTS UP TO 30 MPH DECREASING  
TO 15 MPH AFTER MIDNIGHT.  
LAL.................2 UNTIL 2400, THEN 1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......1600-3600 FT AGL DECREASING TO 600-1100 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR (7400-35700 KNOT-FT).  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....82-88.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........8-14 PERCENT.  
24 HR TREND......7 PERCENT DRIER.  
20-FOOT WINDS.......WEST 10 TO 15 MPH. GUSTS UP TO 20 MPH  
INCREASING TO 30 MPH IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......2900-4900 FT AGL INCREASING TO 11300-12500 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (46600 KNOT-FT) INCREASING TO EXCELLENT  
(197500 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
CLEAR. LOWS IN THE MID 50S. HIGHS IN THE UPPER 80S.  
WEST WINDS AROUND 10 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE UPPER 80S.  
NORTHWEST WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE UPPER  
80S. WINDS GENERALLY LESS THAN 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 80S.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE MID 80S.  
 

 
 
WYZ304-172230-  
SOUTHWEST CARBON COUNTY-  
404 AM MDT TUE JUL 17 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 0900, THEN PARTLY CLOUDY.  
PATCHY FOG UNTIL 0900. ISOLATED SHOWERS AND  
THUNDERSTORMS AFTER 1200.  
MAX TEMPERATURE.....86-91.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........15-21 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH AND GUSTY SHIFTING TO THE  
WEST WITH HIGHER GUSTS IN THE AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH SHIFTING TO THE WEST IN  
THE AFTERNOON.  
MIXING HEIGHT.......1400-2700 FT AGL INCREASING TO 14900-16200 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (14500 KNOT-FT) INCREASING TO EXCELLENT  
(225200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....51-56.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........60-66 PERCENT.  
24 HR TREND......10 PERCENT DRIER.  
HUMIDITY RECOVERY...FAIR.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH. GUSTS UP TO 30 MPH  
DECREASING TO 15 MPH AFTER MIDNIGHT.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 15 MPH DECREASING TO AROUND 5 MPH  
AFTER MIDNIGHT.  
MIXING HEIGHT.......4400-6400 FT AGL DECREASING TO 500-1000 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....GOOD (75000 KNOT-FT) DECREASING TO POOR (4100  
KNOT-FT) AFTER MIDNIGHT.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....87-92.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........10 PERCENT.  
24 HR TREND......11 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH AND GUSTY INCREASING TO  
WEST AROUND 15 MPH WITH HIGHER GUSTS IN THE  
AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH INCREASING TO AROUND 20 MPH  
IN THE AFTERNOON.  
MIXING HEIGHT.......2000-4000 FT AGL INCREASING TO 12300-13600 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (24700 KNOT-FT) INCREASING TO EXCELLENT  
(244200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
CLEAR. LOWS IN THE MID 50S. HIGHS IN THE LOWER 90S.  
WEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER  
90S. NORTHWEST WINDS AROUND 5 MPH.    
SATURDAY
 
PARTLY CLOUDY. LOWS IN THE MID 50S. HIGHS IN THE  
LOWER 90S. WINDS GENERALLY LESS THAN 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 80S.    
MONDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE MID 80S.  
 

 
 
WYZ305-172230-  
SIERRA MADRE RANGE/MEDICINE BOW NF-  
404 AM MDT TUE JUL 17 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 0900, THEN PARTLY CLOUDY.  
PATCHY FOG UNTIL 0900. ISOLATED SHOWERS AND  
THUNDERSTORMS AFTER 1200. SOME THUNDERSTORMS  
MAY PRODUCE DAMAGING WINDS, LARGE HAIL, AND  
HEAVY RAINFALL AFTER 1200.  
MAX TEMPERATURE.....75-83.  
24 HR TREND......2 DEGREES COOLER.  
MIN HUMIDITY........23-29 PERCENT.  
24 HR TREND......6 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH AND GUSTY SHIFTING TO  
THE WEST WITH HIGHER GUSTS IN THE AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......6200-8200 FT AGL INCREASING TO 12600-14200 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (71400 KNOT-FT) INCREASING TO EXCELLENT  
(189000 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0300, THEN CLEAR. ISOLATED  
SHOWERS AND THUNDERSTORMS UNTIL 2400.  
MIN TEMPERATURE.....49-54.  
24 HR TREND......2 DEGREES COOLER.  
MAX HUMIDITY........60-66 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
HUMIDITY RECOVERY...FAIR.  
20-FOOT WINDS.......WEST 5 TO 10 MPH. GUSTS UP TO 30 MPH DECREASING  
TO 15 MPH AFTER MIDNIGHT.  
LAL.................2 UNTIL 2400, THEN 1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......3500-5500 FT AGL DECREASING TO 600-1800 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR TO GOOD (13200-62400 KNOT-FT).  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....76-84.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........10-16 PERCENT.  
24 HR TREND......10 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 5 MPH AND GUSTY INCREASING TO  
AROUND 15 MPH WITH HIGHER GUSTS IN THE  
AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 20 MPH.  
MIXING HEIGHT.......6300-8300 FT AGL INCREASING TO 10200-12000 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....VERY GOOD (116800 KNOT-FT) INCREASING TO  
EXCELLENT (217400 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER 80S.  
WEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER  
80S. NORTHWEST WINDS AROUND 5 MPH.    
SATURDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE LOWER 80S. WINDS  
GENERALLY LESS THAN 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS AROUND 80.    
MONDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE LOWER 50S. HIGHS IN THE UPPER 70S.  
 

 
 
WYZ306-172230-  
UPPER NORTH PLATTE RIVER BASIN-  
404 AM MDT TUE JUL 17 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 0900, THEN PARTLY CLOUDY.  
PATCHY FOG UNTIL 0900. ISOLATED SHOWERS AND  
THUNDERSTORMS AFTER 1200. SOME THUNDERSTORMS  
MAY PRODUCE DAMAGING WINDS, LARGE HAIL, AND  
HEAVY RAINFALL AFTER 1200.  
MAX TEMPERATURE.....81-86.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........19-25 PERCENT.  
24 HR TREND......8 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH SHIFTING TO THE WEST IN THE  
AFTERNOON. GUSTS UP TO 20 MPH.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......4400-6400 FT AGL INCREASING TO 13800-14500 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (31200 KNOT-FT) INCREASING TO EXCELLENT  
(199100 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0300, THEN CLEAR. ISOLATED  
SHOWERS AND THUNDERSTORMS UNTIL 2400.  
MIN TEMPERATURE.....49-54.  
24 HR TREND......2 DEGREES COOLER.  
MAX HUMIDITY........69-75 PERCENT.  
24 HR TREND......6 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH. GUSTS UP TO 20 MPH IN  
THE EVENING.  
LAL.................2 UNTIL 2400, THEN 1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 10 MPH.  
MIXING HEIGHT.......1200-3200 FT AGL.  
SMOKE DISPERSAL.....POOR (9500-24500 KNOT-FT).  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....82-87.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........8-14 PERCENT.  
24 HR TREND......12 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH INCREASING TO WEST  
AROUND 15 MPH IN THE AFTERNOON. GUSTS UP TO 25  
MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......5400-7400 FT AGL INCREASING TO 11600-12300 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (82800 KNOT-FT) INCREASING TO EXCELLENT  
(231500 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE MID 80S.  
SOUTHWEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE UPPER 80S.  
SOUTHWEST WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE UPPER 80S. WINDS  
GENERALLY LESS THAN 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE MID 80S.    
MONDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER 80S.  
 

 
 
WYZ307-172230-  
SNOWY RANGE/MEDICINE BOW NF-  
404 AM MDT TUE JUL 17 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 0900, THEN PARTLY CLOUDY.  
PATCHY FOG UNTIL 0900. SCATTERED THUNDERSTORMS  
AND SHOWERS AFTER 1200. SOME THUNDERSTORMS MAY  
PRODUCE DAMAGING WINDS, LARGE HAIL, AND HEAVY  
RAINFALL AFTER 1200.  
MAX TEMPERATURE.....74-80.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........24-30 PERCENT.  
24 HR TREND......6 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......7400-9400 FT AGL INCREASING TO 11500-12900 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (76500 KNOT-FT) INCREASING TO EXCELLENT  
(159200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 0300, THEN CLEAR. ISOLATED  
SHOWERS AND THUNDERSTORMS UNTIL 2400.  
MIN TEMPERATURE.....43-51.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........70-76 PERCENT.  
24 HR TREND......6 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH.  
LAL.................2 UNTIL 2400, THEN 1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......1700-3700 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (34300-48000 KNOT-FT).  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....73-81.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........12-18 PERCENT.  
24 HR TREND......12 PERCENT DRIER.  
20-FOOT WINDS.......WEST 10 TO 15 MPH. GUSTS UP TO 20 MPH  
INCREASING TO 30 MPH IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST AROUND 25 MPH.  
MIXING HEIGHT.......6700-7800 FT AGL INCREASING TO 9400-10900 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....VERY GOOD (146900 KNOT-FT) INCREASING TO  
EXCELLENT (208900 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 70S.  
WEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE UPPER  
70S. WEST WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS AROUND 80. WINDS  
GENERALLY LESS THAN 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE LOWER 50S. HIGHS IN THE UPPER 70S.    
MONDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE MID 70S.  
 

 
 
WYZ308-172230-  
LARAMIE VALLEY/SHIRLEY BASIN-  
404 AM MDT TUE JUL 17 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 0900, THEN PARTLY CLOUDY.  
PATCHY FOG UNTIL 0900. SCATTERED THUNDERSTORMS  
AND SHOWERS AFTER 1200. SOME THUNDERSTORMS MAY  
PRODUCE DAMAGING WINDS, LARGE HAIL, AND HEAVY  
RAINFALL AFTER 1200.  
MAX TEMPERATURE.....81-86.  
24 HR TREND......3 DEGREES WARMER.  
MIN HUMIDITY........22-28 PERCENT.  
24 HR TREND......3 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH SHIFTING TO THE WEST IN  
THE AFTERNOON.  
MIXING HEIGHT.......1800-3800 FT AGL INCREASING TO 11300-12700 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (13100 KNOT-FT) INCREASING TO VERY GOOD  
(120200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS AND  
THUNDERSTORMS UNTIL 2400.  
MIN TEMPERATURE.....50-55.  
24 HR TREND......2 DEGREES COOLER.  
MAX HUMIDITY........81-87 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......SOUTHEAST AROUND 10 MPH AND GUSTY SHIFTING TO  
THE SOUTHWEST AFTER MIDNIGHT.  
LAL.................3 UNTIL 2400, THEN 1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
MIXING HEIGHT.......1600-3400 FT AGL DECREASING TO 600-1100 FT AGL  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR (7600-31600 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....82-87.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........11-17 PERCENT.  
24 HR TREND......12 PERCENT DRIER.  
20-FOOT WINDS.......WEST AROUND 5 MPH AND GUSTY INCREASING TO  
NORTHWEST AROUND 15 MPH WITH HIGHER GUSTS IN  
THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....WEST 15 TO 20 MPH.  
MIXING HEIGHT.......3700-5700 FT AGL INCREASING TO 11000-11800 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (74400 KNOT-FT) INCREASING TO EXCELLENT  
(207700 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE UPPER 80S.  
WEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE MID 80S.  
SOUTH WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE UPPER 80S.  
WINDS GENERALLY LESS THAN 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE MID 50S. HIGHS IN THE MID 80S.    
MONDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER 80S.  
 

 
 
WYZ309-172230-  
SOUTH LARAMIE RANGE/MEDICINE BOW NF-  
404 AM MDT TUE JUL 17 2018  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY UNTIL 0900, THEN PARTLY CLOUDY  
UNTIL 1200, THEN MOSTLY CLOUDY. AREAS OF FOG  
UNTIL 0900. SCATTERED SHOWERS AND ISOLATED  
THUNDERSTORMS AFTER 1200. SOME THUNDERSTORMS  
MAY PRODUCE DAMAGING WINDS, LARGE HAIL, AND  
HEAVY RAINFALL AFTER 1200.  
MAX TEMPERATURE.....78-84.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........34-40 PERCENT.  
24 HR TREND......10 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH. GUSTS UP TO 20 MPH IN  
THE AFTERNOON.  
LAL.................1 UNTIL 1200, THEN 4.  
CHC OF WETTING RAIN.15 PERCENT.  
TRANSPORT WINDS.....EAST AROUND 5 MPH SHIFTING TO THE SOUTH IN THE  
AFTERNOON.  
MIXING HEIGHT.......2300-3300 FT AGL INCREASING TO 8600-10600 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (14100 KNOT-FT) INCREASING TO GOOD (69800  
KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. ISOLATED SHOWERS AND  
THUNDERSTORMS UNTIL 2400. SOME THUNDERSTORMS  
MAY PRODUCE DAMAGING WINDS, LARGE HAIL, AND  
HEAVY RAINFALL UNTIL 2400.  
MIN TEMPERATURE.....52-58.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........76-82 PERCENT.  
24 HR TREND......10 PERCENT DRIER.  
HUMIDITY RECOVERY...GOOD.  
20-FOOT WINDS.......SOUTH AROUND 10 MPH AND GUSTY SHIFTING TO THE  
SOUTHWEST AFTER MIDNIGHT.  
LAL.................3 UNTIL 2400, THEN 1.  
CHC OF WETTING RAIN.5 PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 15 MPH SHIFTING TO THE WEST AFTER  
MIDNIGHT.  
MIXING HEIGHT.......700-2700 FT AGL.  
SMOKE DISPERSAL.....POOR (9700-25500 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....82-88.  
24 HR TREND......4 DEGREES WARMER.  
MIN HUMIDITY........14-20 PERCENT.  
24 HR TREND......22 PERCENT DRIER.  
20-FOOT WINDS.......NORTHWEST 10 TO 15 MPH. GUSTS UP TO 20 MPH  
INCREASING TO 30 MPH IN THE AFTERNOON.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 20 MPH.  
MIXING HEIGHT.......4400-6400 FT AGL INCREASING TO 10600-12300 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (95900 KNOT-FT) INCREASING TO EXCELLENT  
(200200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
CLEAR. LOWS IN THE MID 50S. HIGHS IN THE UPPER 80S.  
WEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE MID  
80S. EAST WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE UPPER  
80S. SOUTHWEST WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 80S.    
MONDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE LOWER 80S.  
 

 
 
WYZ310-172230-  
PLATTE/GOSHEN/CENTRAL AND EASTERN LARAMIE-  
404 AM MDT TUE JUL 17 2018  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1500, THEN MOSTLY CLOUDY.  
AREAS OF FOG UNTIL 0900. SCATTERED SHOWERS AND  
ISOLATED THUNDERSTORMS AFTER 1200. SOME  
THUNDERSTORMS MAY PRODUCE DAMAGING WINDS, LARGE  
HAIL, AND HEAVY RAINFALL AFTER 1200.  
MAX TEMPERATURE.....82-87.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........35-41 PERCENT.  
24 HR TREND......1 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH.  
MIXING HEIGHT.......2400-3000 FT AGL INCREASING TO 6300-8100 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (20800-45900 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY. SCATTERED THUNDERSTORMS AND  
SHOWERS UNTIL 2400. SOME THUNDERSTORMS MAY  
PRODUCE DAMAGING WINDS, LARGE HAIL, AND HEAVY  
RAINFALL UNTIL 2400.  
MIN TEMPERATURE.....57-62.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........85-91 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHEAST AROUND 10 MPH.  
LAL.................4 UNTIL 2400, THEN 2.  
CHC OF WETTING RAIN.10 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......900-1700 FT AGL.  
SMOKE DISPERSAL.....POOR (9500-16200 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....87-92.  
24 HR TREND......6 DEGREES WARMER.  
MIN HUMIDITY........16-22 PERCENT.  
24 HR TREND......19 PERCENT DRIER.  
20-FOOT WINDS.......NORTHWEST 5 TO 10 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH INCREASING TO AROUND 20  
MPH IN THE AFTERNOON.  
MIXING HEIGHT.......2200-3600 FT AGL INCREASING TO 11000-11900 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (28300 KNOT-FT) INCREASING TO EXCELLENT  
(190900 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 90S.  
NORTHWEST WINDS AROUND 5 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE MID 50S. HIGHS AROUND 90. NORTHEAST  
WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE  
LOWER 90S. SOUTH WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 60S. HIGHS IN THE LOWER 90S.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE MID 80S.  
 

 
 
NEZ311-172230-  
PINE RIDGE/NEBRASKA NATIONAL FOREST/OGLALA NATIONAL GRASSLANDS-  
404 AM MDT TUE JUL 17 2018  
 
...FLASH FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH LATE  
TONIGHT...  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1500, THEN MOSTLY CLOUDY.  
AREAS OF FOG UNTIL 0900.  
MAX TEMPERATURE.....83-88.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........38-44 PERCENT.  
24 HR TREND......UNCHANGED.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH AND GUSTY.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.  
MIXING HEIGHT.......2100-2700 FT AGL INCREASING TO 7500-8400 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (12200-50100 KNOT-FT).  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY.  
NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS  
UNTIL 2400, THEN SCATTERED SHOWERS AND  
THUNDERSTORMS. SOME THUNDERSTORMS MAY PRODUCE  
DAMAGING WINDS, LARGE HAIL, AND HEAVY RAINFALL  
UNTIL 2400.  
MIN TEMPERATURE.....59-64.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........90-96 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......EAST AROUND 10 MPH AND GUSTY.  
LAL.................4 UNTIL 2400, THEN 3.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 20 MPH.  
MIXING HEIGHT.......1300-3100 FT AGL.  
SMOKE DISPERSAL.....POOR (22200-34900 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....86-91.  
24 HR TREND......3 DEGREES WARMER.  
MIN HUMIDITY........27-33 PERCENT.  
24 HR TREND......11 PERCENT DRIER.  
20-FOOT WINDS.......SOUTH AROUND 5 MPH SHIFTING TO THE WEST IN THE  
AFTERNOON. GUSTS UP TO 15 MPH.  
LAL.................2 UNTIL 1200, THEN 1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH SHIFTING TO THE NORTHWEST  
IN THE AFTERNOON.  
MIXING HEIGHT.......2500-3300 FT AGL INCREASING TO 9100-10100 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (19500 KNOT-FT) INCREASING TO VERY GOOD  
(121900 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
MOSTLY CLEAR. LOWS AROUND 60. HIGHS IN THE LOWER 90S.  
WEST WINDS AROUND 5 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 80S.  
NORTHEAST WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS AROUND 60. HIGHS IN THE LOWER 90S.  
SOUTHEAST WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 60S. HIGHS IN THE LOWER 90S.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 60S. HIGHS IN THE MID 80S.  
 

 
 
NEZ312-172230-  
BOX BUTTE/SOUTH SIOUX-  
404 AM MDT TUE JUL 17 2018  
 
...FLASH FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH LATE  
TONIGHT...  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1500, THEN MOSTLY CLOUDY.  
AREAS OF FOG UNTIL 0900.  
MAX TEMPERATURE.....84-89.  
24 HR TREND......UNCHANGED.  
MIN HUMIDITY........37-43 PERCENT.  
24 HR TREND......5 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHEAST AROUND 5 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 2.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHEAST AROUND 5 MPH.  
MIXING HEIGHT.......1900-2400 FT AGL INCREASING TO 7200-7700 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (13100-37900 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY.  
NUMEROUS SHOWERS AND ISOLATED THUNDERSTORMS  
UNTIL 2400, THEN SCATTERED SHOWERS AND  
THUNDERSTORMS. SOME THUNDERSTORMS MAY PRODUCE  
DAMAGING WINDS, LARGE HAIL, AND HEAVY RAINFALL  
UNTIL 2400.  
MIN TEMPERATURE.....59-64.  
24 HR TREND......1 DEGREE WARMER.  
MAX HUMIDITY........92-98 PERCENT.  
24 HR TREND......7 PERCENT DRIER.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......EAST AROUND 10 MPH.  
LAL.................4 UNTIL 2400, THEN 3.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 15 TO 20 MPH.  
MIXING HEIGHT.......1500-3500 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (18100-48400 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....87-92.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........24-30 PERCENT.  
24 HR TREND......13 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHEAST AROUND 5 MPH SHIFTING TO THE WEST IN  
THE AFTERNOON. GUSTS UP TO 15 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 15 MPH SHIFTING TO THE NORTHWEST  
IN THE AFTERNOON.  
MIXING HEIGHT.......2700-3500 FT AGL INCREASING TO 9200-10600 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (25100 KNOT-FT) INCREASING TO VERY GOOD  
(128700 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 50S. HIGHS IN THE  
LOWER 90S. NORTHWEST WINDS AROUND 5 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE UPPER 50S. HIGHS AROUND 90.  
NORTHEAST WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS AROUND 60. HIGHS IN THE LOWER 90S.  
SOUTHEAST WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 60S. HIGHS IN THE LOWER 90S.    
MONDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS AROUND 60. HIGHS IN THE UPPER 80S.  
 

 
 
NEZ313-172230-  
SCOTTS BLUFF NATIONAL MONUMENT/WILDCAT HILLS-  
404 AM MDT TUE JUL 17 2018  
 
...FLASH FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH LATE  
TONIGHT...  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY UNTIL 1500, THEN MOSTLY CLOUDY.  
AREAS OF FOG UNTIL 0900.  
MAX TEMPERATURE.....85-90.  
24 HR TREND......1 DEGREE COOLER.  
MIN HUMIDITY........37-43 PERCENT.  
24 HR TREND......2 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHEAST 5 TO 10 MPH AND GUSTY.  
LAL.................1 UNTIL 1200, THEN 3.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 10 TO 15 MPH.  
MIXING HEIGHT.......1900-2500 FT AGL INCREASING TO 6800-7500 FT AGL  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR TO FAIR (25300-46200 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY.  
NUMEROUS THUNDERSTORMS AND SHOWERS UNTIL 2400,  
THEN SCATTERED SHOWERS AND THUNDERSTORMS. SOME  
THUNDERSTORMS MAY PRODUCE DAMAGING WINDS, LARGE  
HAIL, AND HEAVY RAINFALL UNTIL 2400.  
MIN TEMPERATURE.....60-65.  
24 HR TREND......UNCHANGED.  
MAX HUMIDITY........88-94 PERCENT.  
24 HR TREND......UNCHANGED.  
HUMIDITY RECOVERY...EXCELLENT.  
20-FOOT WINDS.......SOUTHEAST AROUND 10 MPH AND GUSTY.  
LAL.................4 UNTIL 2400, THEN 3.  
CHC OF WETTING RAIN.25 PERCENT.  
TRANSPORT WINDS.....SOUTHEAST 15 TO 20 MPH.  
MIXING HEIGHT.......1300-3300 FT AGL.  
SMOKE DISPERSAL.....POOR TO FAIR (21100-43400 KNOT-FT).  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
WEDNESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
MAX TEMPERATURE.....88-93.  
24 HR TREND......3 DEGREES WARMER.  
MIN HUMIDITY........24-30 PERCENT.  
24 HR TREND......13 PERCENT DRIER.  
20-FOOT WINDS.......SOUTH AROUND 10 MPH SHIFTING TO THE NORTHWEST  
IN THE AFTERNOON. GUSTS UP TO 20 MPH.  
LAL.................1.  
CHC OF WETTING RAIN.ZERO PERCENT.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH SHIFTING TO THE NORTHWEST  
IN THE AFTERNOON.  
MIXING HEIGHT.......2800-3400 FT AGL INCREASING TO 9000-10600 FT  
AGL IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (22500 KNOT-FT) INCREASING TO VERY GOOD  
(133200 KNOT-FT) IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
CLEAR. LOWS AROUND 60. HIGHS IN THE MID 90S. WEST  
WINDS AROUND 5 MPH.    
FRIDAY
 
CLEAR. LOWS IN THE UPPER 50S. HIGHS AROUND 90.  
NORTHEAST WINDS AROUND 5 MPH.    
SATURDAY
 
MOSTLY CLEAR. LOWS AROUND 60. HIGHS IN THE LOWER 90S.  
SOUTHEAST WINDS AROUND 10 MPH.    
SUNDAY
 
PARTLY CLOUDY WITH SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 60S. HIGHS IN THE LOWER 90S.    
MONDAY
 
PARTLY CLOUDY WITH CHANCE OF SHOWERS AND SLIGHT CHANCE  
OF THUNDERSTORMS. LOWS IN THE LOWER 60S. HIGHS IN THE UPPER 80S.  
 

 
 
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