580  
FNUS53 KUNR 170901  
FWFUNR  
 
FIRE WEATHER PLANNING FORECAST FOR NE WYOMING AND WRN SOUTH DAKOTA  
NATIONAL WEATHER SERVICE RAPID CITY SD  
301 AM MDT TUE SEP 17 2019  
   
DISCUSSION
 
A TROF OF LOW PRESSURE WILL MOVE THROUGH THE AREA THIS  
AFTERNOON, WITH A COLD FRONT ARRIVING THIS EVENING. ISOLATED  
TO SCATTERED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EARLY  
EVENING. RELATIVE HUMIDITY THIS AFTERNOON WILL DROP TO 20 TO 25  
PERCENT FOR MUCH OF THE AREA. WEST TO SOUTHWEST WINDS WILL INCREASE  
THIS AFTERNOON AND EVENING, WITH GUSTS OF 30 TO 50 MPH OVER NORTHEAST  
WYOMING AND THE PLAINS OF WESTERN SOUTH DAKOTA.  
 
TEMPERATURES WILL BE COOLER ON WEDNESDAY, THOUGH RELATIVE HUMIDITY  
WILL STILL BE LOW...RANGING FROM AROUND 20 PERCENT IN NORTHEAST  
WYOMING TO AROUND 25 PERCENT IN WESTERN SOUTH DAKOTA. SHOWER AND  
THUNDERSTORMS CHANCES INCREASE ACROSS THE AREA THURSDAY AND FRIDAY.  
 
WYZ297-172300-  
NORTHERN CAMPBELL-  
INCLUDING THE CITY OF GILLETTE  
301 AM MDT TUE SEP 17 2019  
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY. CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
CHC OF WETTING RAIN.40 PERCENT.  
LAL.................1 UNTIL 1200, THEN 3.  
MAX TEMPERATURE.....AROUND 79.  
MIN HUMIDITY........24 PERCENT.  
20-FOOT WINDS.......SOUTHWEST 15 TO 25 MPH WITH GUSTS TO AROUND 35  
MPH INCREASING TO 25 TO 40 MPH WITH GUSTS TO  
AROUND 50 MPH IN THE AFTERNOON.  
HAINES INDEX........4 LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE  
GROWTH.  
TRANSPORT WINDS.....SOUTHWEST AROUND 35 MPH INCREASING TO AROUND 45  
MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....VERY GOOD INCREASING TO EXCELLENT IN THE  
AFTERNOON.  
MIXING HEIGHT.......7200 TO 9000 FT AGL.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR. CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING.  
CHC OF WETTING RAIN.30 PERCENT.  
LAL.................3 UNTIL 2400, THEN 1.  
MIN TEMPERATURE.....AROUND 46.  
MAX HUMIDITY........75-85 PERCENT.  
20-FOOT WINDS.......WEST 25 TO 35 MPH WITH GUSTS TO AROUND 50 MPH  
BECOMING SOUTHWEST 10 TO 15 MPH AFTER MIDNIGHT.  
HAINES INDEX........2 VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....WEST AROUND 45 MPH BECOMING SOUTHWEST AROUND 20  
MPH AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR.  
MIXING HEIGHT.......200 TO 300 FT AGL.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
CHC OF WETTING RAIN.0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 77.  
MIN HUMIDITY........19 PERCENT.  
20-FOOT WINDS.......SOUTH 10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH.  
HAINES INDEX........5 MODERATE POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....SOUTH AROUND 20 MPH.  
SMOKE DISPERSAL.....POOR INCREASING TO GOOD IN THE AFTERNOON.  
MIXING HEIGHT.......4400 TO 5600 FT AGL.  
 
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE  
LOWER 80S. SOUTH WINDS 15 TO 20 MPH.    
FRIDAY
 
COOLER. MOSTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE LOWER 60S.  
NORTHWEST WINDS 15 TO 20 MPH.    
SATURDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S. NORTHWEST WINDS  
AROUND 20 MPH.    
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
LOWER 40S. HIGHS IN THE UPPER 60S.    
MONDAY
 
PARTLY CLOUDY. LOWS IN THE MID 40S. HIGHS IN THE UPPER  
60S.  
 

 
 
WYZ259-172300-  
SOUTHERN CAMPBELL-  
INCLUDING THE CITY OF WRIGHT  
301 AM MDT TUE SEP 17 2019  
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY. CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
CHC OF WETTING RAIN.30 PERCENT.  
LAL.................1 UNTIL 1200, THEN 3.  
MAX TEMPERATURE.....AROUND 77.  
MIN HUMIDITY........25 PERCENT.  
20-FOOT WINDS.......SOUTHWEST 15 TO 25 MPH WITH GUSTS TO AROUND 35  
MPH INCREASING TO 25 TO 40 MPH WITH GUSTS TO  
AROUND 50 MPH IN THE AFTERNOON.  
HAINES INDEX........4 LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE  
GROWTH.  
TRANSPORT WINDS.....SOUTHWEST AROUND 35 MPH INCREASING TO AROUND 50  
MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....VERY GOOD INCREASING TO EXCELLENT IN THE  
AFTERNOON.  
MIXING HEIGHT.......6900 TO 8700 FT AGL.  
   
TONIGHT
 
 
SKY/WEATHER.........CLEAR.  
CHC OF WETTING RAIN.0 PERCENT.  
LAL.................1.  
MIN TEMPERATURE.....AROUND 43.  
MAX HUMIDITY........66-78 PERCENT.  
20-FOOT WINDS.......WEST 25 TO 35 MPH WITH GUSTS TO AROUND 50 MPH  
BECOMING SOUTHWEST 10 TO 15 MPH AFTER MIDNIGHT.  
HAINES INDEX........2 VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....WEST AROUND 50 MPH BECOMING SOUTHWEST AND  
DECREASING TO AROUND 15 MPH AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR.  
MIXING HEIGHT.......200 TO 300 FT AGL.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
CHC OF WETTING RAIN.0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 77.  
MIN HUMIDITY........18 PERCENT.  
20-FOOT WINDS.......SOUTH 10 TO 20 MPH.  
HAINES INDEX........5 MODERATE POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....SOUTH AROUND 20 MPH INCREASING TO SOUTHWEST  
AROUND 30 MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR INCREASING TO VERY GOOD IN THE AFTERNOON.  
MIXING HEIGHT.......5600 TO 7000 FT AGL.  
 
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
BREEZY. MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN  
THE LOWER 80S. SOUTH WINDS 15 TO 25 MPH.    
FRIDAY
 
COOLER. MOSTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE MID 60S.  
NORTHWEST WINDS 15 TO 20 MPH.    
SATURDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS AROUND 40. HIGHS IN THE LOWER 60S. NORTHWEST WINDS AROUND  
20 MPH.    
SUNDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS. LOWS AROUND 40.  
HIGHS IN THE UPPER 60S.    
MONDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE MID  
60S.  
 

 
 
WYZ298-172300-  
CROOK AND WESTON COUNTY PLAINS-  
INCLUDING THE CITIES OF COLONY, MOORCROFT, NEWCASTLE, AND UPTON  
301 AM MDT TUE SEP 17 2019  
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY. CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
CHC OF WETTING RAIN.30 PERCENT.  
LAL.................1 UNTIL 1200, THEN 3.  
MAX TEMPERATURE.....AROUND 82.  
MIN HUMIDITY........23 PERCENT.  
20-FOOT WINDS.......SOUTHWEST 15 TO 25 MPH INCREASING TO 25 TO 35  
MPH WITH GUSTS TO AROUND 50 MPH IN THE  
AFTERNOON.  
HAINES INDEX........5 MODERATE POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....SOUTHWEST AROUND 30 MPH INCREASING TO AROUND 40  
MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....VERY GOOD INCREASING TO EXCELLENT IN THE  
AFTERNOON.  
MIXING HEIGHT.......7900 TO 9900 FT AGL.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING.  
CHC OF WETTING RAIN.20 PERCENT.  
LAL.................3 UNTIL 2400, THEN 1.  
MIN TEMPERATURE.....AROUND 44.  
MAX HUMIDITY........76-88 PERCENT.  
20-FOOT WINDS.......WEST 25 TO 35 MPH WITH GUSTS TO AROUND 50 MPH  
DECREASING TO 15 TO 20 MPH WITH GUSTS TO AROUND  
30 MPH AFTER MIDNIGHT.  
HAINES INDEX........2 VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....WEST AROUND 40 MPH DECREASING TO AROUND 20 MPH  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR.  
MIXING HEIGHT.......200 TO 300 FT AGL.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
CHC OF WETTING RAIN.0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 77.  
MIN HUMIDITY........21 PERCENT.  
20-FOOT WINDS.......SOUTH 10 TO 15 MPH WITH GUSTS TO AROUND 25 MPH.  
HAINES INDEX........5 MODERATE POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....SOUTH AROUND 20 MPH.  
SMOKE DISPERSAL.....POOR INCREASING TO GOOD IN THE AFTERNOON.  
MIXING HEIGHT.......5200 TO 6600 FT AGL.  
 
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE  
LOWER 80S. SOUTH WINDS AROUND 20 MPH.    
FRIDAY
 
COOLER. MOSTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 60S.  
NORTHWEST WINDS 15 TO 20 MPH.    
SATURDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE LOWER 40S. HIGHS IN THE LOWER 60S. NORTHWEST WINDS  
AROUND 20 MPH.    
SUNDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS. LOWS AROUND 40.  
HIGHS IN THE UPPER 60S.    
MONDAY
 
PARTLY CLOUDY. LOWS IN THE LOWER 40S. HIGHS IN THE  
UPPER 60S.  
 

 
 
WYZ299-172300-  
WYOMING BLACK HILLS-  
INCLUDING THE CITIES OF SUNDANCE AND FOUR CORNERS  
301 AM MDT TUE SEP 17 2019  
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY. CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
CHC OF WETTING RAIN.40 PERCENT.  
LAL.................1 UNTIL 1200, THEN 3.  
MAX TEMPERATURE.....76-82.  
MIN HUMIDITY........26 PERCENT.  
20-FOOT WINDS.......SOUTHWEST 20 TO 30 MPH.  
GUSTS TO AROUND 40 MPH IN THE AFTERNOON.  
HAINES INDEX........5 MODERATE POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....SOUTHWEST 30 TO 35 MPH.  
SMOKE DISPERSAL.....GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.  
MIXING HEIGHT.......7500 TO 9400 FT AGL.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING.  
CHC OF WETTING RAIN.10 PERCENT.  
LAL.................2 UNTIL 2400, THEN 1.  
MIN TEMPERATURE.....AROUND 46.  
MAX HUMIDITY........69-81 PERCENT.  
20-FOOT WINDS.......WEST 20 TO 30 MPH WITH GUSTS TO AROUND 40 MPH  
DECREASING TO 15 TO 20 MPH WITH GUSTS TO AROUND  
30 MPH AFTER MIDNIGHT.  
HAINES INDEX........2 VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....WEST AROUND 35 MPH DECREASING TO AROUND 20 MPH  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR.  
MIXING HEIGHT.......200 TO 300 FT AGL.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
CHC OF WETTING RAIN.0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 73.  
MIN HUMIDITY........25 PERCENT.  
20-FOOT WINDS.......SOUTH 10 TO 20 MPH.  
HAINES INDEX........4 LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE  
GROWTH.  
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.  
SMOKE DISPERSAL.....FAIR.  
MIXING HEIGHT.......4200 TO 5300 FT AGL.  
 
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
BREEZY. MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS  
AROUND 80. SOUTH WINDS AROUND 25 MPH.    
FRIDAY
 
COOLER. MOSTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE MID 60S.  
NORTHWEST WINDS AROUND 20 MPH.    
SATURDAY
 
BREEZY. PARTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 40S. HIGHS IN THE UPPER 50S.  
WEST WINDS 20 TO 25 MPH.    
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
LOWER 40S. HIGHS IN THE LOWER 60S.    
MONDAY
 
PARTLY CLOUDY. LOWS IN THE MID 40S. HIGHS IN THE LOWER  
60S.  
 

 
 
SDZ260-172300-  
NORTHERN BLACK HILLS-  
INCLUDING THE CITIES OF LEAD, DEADWOOD, SPEARFISH, AND STURGIS  
301 AM MDT TUE SEP 17 2019  
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY. CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
CHC OF WETTING RAIN.30 PERCENT.  
LAL.................1 UNTIL 1200, THEN 3.  
MAX TEMPERATURE.....76-84.  
MIN HUMIDITY........26 PERCENT.  
20-FOOT WINDS.......SOUTHWEST 15 TO 25 MPH.  
GUSTS TO AROUND 35 MPH IN THE AFTERNOON.  
HAINES INDEX........6 HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE  
GROWTH.  
TRANSPORT WINDS.....SOUTHWEST 30 TO 35 MPH.  
SMOKE DISPERSAL.....GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.  
MIXING HEIGHT.......6800 TO 8600 FT AGL.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING.  
CHC OF WETTING RAIN.10 PERCENT.  
LAL.................2 UNTIL 2400, THEN 1.  
MIN TEMPERATURE.....43-51.  
MAX HUMIDITY........72-82 PERCENT.  
20-FOOT WINDS.......WEST 15 TO 25 MPH WITH GUSTS TO AROUND 35 MPH.  
HAINES INDEX........2 VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....WEST 25 TO 30 MPH.  
SMOKE DISPERSAL.....POOR.  
MIXING HEIGHT.......200 TO 300 FT AGL.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
CHC OF WETTING RAIN.0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....69-77.  
MIN HUMIDITY........31 PERCENT.  
20-FOOT WINDS.......WEST 15 TO 20 MPH SHIFTING TO THE SOUTHEAST 10  
TO 15 MPH IN THE AFTERNOON.  
HAINES INDEX........4 LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE  
GROWTH.  
TRANSPORT WINDS.....WEST AROUND 25 MPH SHIFTING TO THE SOUTH IN THE  
AFTERNOON.  
SMOKE DISPERSAL.....GOOD.  
MIXING HEIGHT.......4600 TO 5800 FT AGL.  
 
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
BREEZY. MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS  
AROUND 80. SOUTH WINDS 20 TO 25 MPH.    
FRIDAY
 
COOLER. MOSTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE MID 60S.  
NORTHWEST WINDS 15 TO 20 MPH.    
SATURDAY
 
BREEZY. PARTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE UPPER 50S. WEST  
WINDS 20 TO 25 MPH.    
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
LOWER 40S. HIGHS IN THE MID 60S.    
MONDAY
 
PARTLY CLOUDY. LOWS IN THE MID 40S. HIGHS IN THE MID  
60S.  
 

 
 
SDZ262-172300-  
SOUTHERN BLACK HILLS-  
INCLUDING THE CITIES OF RAPID CITY, HILL CITY, CUSTER,  
HOT SPRINGS, AND EDGEMONT  
301 AM MDT TUE SEP 17 2019  
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY. CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
CHC OF WETTING RAIN.40 PERCENT.  
LAL.................1 UNTIL 1200, THEN 3.  
MAX TEMPERATURE.....75-85.  
MIN HUMIDITY........22-28 PERCENT.  
20-FOOT WINDS.......SOUTHWEST 15 TO 25 MPH.  
GUSTS TO AROUND 35 MPH IN THE AFTERNOON.  
HAINES INDEX........5 MODERATE POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....WEST AROUND 25 MPH INCREASING TO SOUTHWEST  
AROUND 35 MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.  
MIXING HEIGHT.......7200 TO 9100 FT AGL.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
CHC OF WETTING RAIN.10 PERCENT.  
LAL.................1.  
MIN TEMPERATURE.....43-51.  
MAX HUMIDITY........63-75 PERCENT.  
20-FOOT WINDS.......WEST 15 TO 25 MPH.  
GUSTS TO AROUND 35 MPH IN THE EVENING.  
HAINES INDEX........2 VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....WEST 20 TO 25 MPH.  
SMOKE DISPERSAL.....POOR.  
MIXING HEIGHT.......200 TO 300 FT AGL.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
CHC OF WETTING RAIN.0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....69-79.  
MIN HUMIDITY........24-30 PERCENT.  
20-FOOT WINDS.......SOUTHWEST 10 TO 15 MPH SHIFTING TO THE SOUTH 15  
TO 20 MPH IN THE AFTERNOON.  
HAINES INDEX........4 LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE  
GROWTH.  
TRANSPORT WINDS.....WEST AROUND 15 MPH SHIFTING TO THE SOUTHWEST IN  
THE AFTERNOON.  
SMOKE DISPERSAL.....POOR INCREASING TO GOOD IN THE AFTERNOON.  
MIXING HEIGHT.......4900 TO 6200 FT AGL.  
 
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS AROUND 80.  
SOUTH WINDS AROUND 20 MPH.    
FRIDAY
 
COOLER, BREEZY. MOSTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 50S. HIGHS IN THE UPPER 60S.  
WEST WINDS 15 TO 25 MPH.    
SATURDAY
 
BREEZY. PARTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 40S. HIGHS IN THE LOWER 60S. WEST  
WINDS 20 TO 25 MPH.    
SUNDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
LOWER 40S. HIGHS IN THE MID 60S.    
MONDAY
 
PARTLY CLOUDY. LOWS IN THE MID 40S. HIGHS IN THE MID  
60S.  
 

 
 
SDZ261-172300-  
NORTHWESTERN SOUTH DAKOTA PLAINS-  
INCLUDING THE CITIES OF BELLE FOURCHE, BISON, FAITH,  
UNION CENTER, NEW UNDERWOOD, AND WASTA  
301 AM MDT TUE SEP 17 2019  
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
CHC OF WETTING RAIN.30 PERCENT.  
LAL.................1 UNTIL 1200, THEN 3.  
MAX TEMPERATURE.....AROUND 88.  
MIN HUMIDITY........24 PERCENT.  
20-FOOT WINDS.......SOUTHWEST 15 TO 20 MPH INCREASING TO 20 TO 30  
MPH WITH GUSTS TO AROUND 40 MPH IN THE  
AFTERNOON.  
HAINES INDEX........6 HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE  
GROWTH.  
TRANSPORT WINDS.....SOUTHWEST AROUND 25 MPH INCREASING TO AROUND 35  
MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR INCREASING TO EXCELLENT IN THE AFTERNOON.  
MIXING HEIGHT.......7300 TO 9200 FT AGL.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING CLEAR. SLIGHT  
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE  
EVENING.  
CHC OF WETTING RAIN.20 PERCENT.  
LAL.................3 UNTIL 2400, THEN 1.  
MIN TEMPERATURE.....AROUND 52.  
MAX HUMIDITY........74-86 PERCENT.  
20-FOOT WINDS.......WEST 25 TO 35 MPH.  
GUSTS TO AROUND 45 MPH IN THE EVENING.  
HAINES INDEX........3 VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....WEST 30 TO 35 MPH.  
SMOKE DISPERSAL.....POOR.  
MIXING HEIGHT.......200 TO 300 FT AGL.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
CHC OF WETTING RAIN.0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 77.  
MIN HUMIDITY........26-32 PERCENT.  
20-FOOT WINDS.......WEST 15 TO 20 MPH SHIFTING TO THE SOUTHWEST 10  
TO 15 MPH IN THE AFTERNOON.  
GUSTS TO AROUND 30 MPH.  
HAINES INDEX........5 MODERATE POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....WEST AROUND 25 MPH.  
SMOKE DISPERSAL.....GOOD.  
MIXING HEIGHT.......4500 TO 5700 FT AGL.  
 
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE MID  
80S. SOUTHEAST WINDS 15 TO 20 MPH.    
FRIDAY
 
NOT AS WARM. MOSTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 70S.  
NORTHWEST WINDS AROUND 20 MPH.    
SATURDAY
 
BREEZY. PARTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 40S. HIGHS IN THE MID 60S. WEST  
WINDS 20 TO 25 MPH.    
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
MID 40S. HIGHS IN THE UPPER 60S.    
MONDAY
 
PARTLY CLOUDY. LOWS IN THE UPPER 40S. HIGHS AROUND 70.  
 

 
 
SDZ264-172300-  
BADLANDS AREA-  
INCLUDING THE CITIES OF WALL, INTERIOR, RED SHIRT, AND SCENIC  
301 AM MDT TUE SEP 17 2019  
   
TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY.  
CHC OF WETTING RAIN.10 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 88.  
MIN HUMIDITY........25 PERCENT.  
20-FOOT WINDS.......SOUTHWEST 10 TO 15 MPH INCREASING TO 15 TO 25  
MPH WITH GUSTS TO AROUND 35 MPH IN THE  
AFTERNOON.  
HAINES INDEX........6 HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE  
GROWTH.  
TRANSPORT WINDS.....SOUTHWEST AROUND 20 MPH INCREASING TO AROUND 30  
MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.  
MIXING HEIGHT.......6500 TO 8200 FT AGL.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING CLEAR. SLIGHT  
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE  
EVENING.  
CHC OF WETTING RAIN.10 PERCENT.  
LAL.................2 UNTIL 2400, THEN 1.  
MIN TEMPERATURE.....AROUND 50.  
MAX HUMIDITY........73-79 PERCENT.  
20-FOOT WINDS.......WEST 15 TO 25 MPH WITH GUSTS TO AROUND 35 MPH.  
HAINES INDEX........4 LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE  
GROWTH.  
TRANSPORT WINDS.....WEST AROUND 30 MPH DECREASING TO AROUND 20 MPH  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR.  
MIXING HEIGHT.......200 TO 300 FT AGL.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
CHC OF WETTING RAIN.0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 78.  
MIN HUMIDITY........28 PERCENT.  
20-FOOT WINDS.......WEST 10 TO 15 MPH SHIFTING TO THE SOUTH 5 TO 10  
MPH IN THE AFTERNOON.  
HAINES INDEX........5 MODERATE POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH.  
SMOKE DISPERSAL.....FAIR.  
MIXING HEIGHT.......4400 TO 5600 FT AGL.  
 
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE MID  
80S. SOUTH WINDS AROUND 15 MPH.    
FRIDAY
 
NOT AS WARM. MOSTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE MID 70S. WEST  
WINDS 15 TO 20 MPH.    
SATURDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE UPPER 40S. HIGHS IN THE UPPER 60S. WEST WINDS AROUND  
20 MPH.    
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
MID 40S. HIGHS AROUND 70.    
MONDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE LOWER  
70S.  
 

 
 
SDZ263-172300-  
SOUTHWESTERN SOUTH DAKOTA-  
INCLUDING THE CITIES OF PINE RIDGE, ARDMORE, OELRICHS, AND OGLALA  
301 AM MDT TUE SEP 17 2019  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY. CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON.  
CHC OF WETTING RAIN.30 PERCENT.  
LAL.................1 UNTIL 1200, THEN 3.  
MAX TEMPERATURE.....AROUND 87.  
MIN HUMIDITY........22 PERCENT.  
20-FOOT WINDS.......SOUTHWEST 10 TO 20 MPH.  
GUSTS TO AROUND 30 MPH IN THE AFTERNOON.  
HAINES INDEX........6 HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE  
GROWTH.  
TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH.  
SMOKE DISPERSAL.....GOOD INCREASING TO EXCELLENT IN THE AFTERNOON.  
MIXING HEIGHT.......7700 TO 9700 FT AGL.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING.  
CHC OF WETTING RAIN.20 PERCENT.  
LAL.................3 UNTIL 2400, THEN 1.  
MIN TEMPERATURE.....AROUND 47.  
MAX HUMIDITY........68-78 PERCENT.  
20-FOOT WINDS.......WEST 10 TO 20 MPH.  
GUSTS TO AROUND 30 MPH IN THE EVENING.  
HAINES INDEX........2 VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....WEST AROUND 25 MPH DECREASING TO AROUND 15 MPH  
AFTER MIDNIGHT.  
SMOKE DISPERSAL.....POOR.  
MIXING HEIGHT.......100 TO 200 FT AGL.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
CHC OF WETTING RAIN.0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 80.  
MIN HUMIDITY........24 PERCENT.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH SHIFTING TO THE SOUTH 10  
TO 15 MPH IN THE AFTERNOON.  
HAINES INDEX........5 MODERATE POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH.  
SMOKE DISPERSAL.....POOR INCREASING TO GOOD IN THE AFTERNOON.  
MIXING HEIGHT.......5600 TO 7000 FT AGL.  
 
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE MID  
80S. SOUTH WINDS AROUND 15 MPH.    
FRIDAY
 
NOT AS WARM. MOSTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE MID 50S. HIGHS IN THE MID 70S.  
SOUTHWEST WINDS 15 TO 20 MPH.    
SATURDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE MID 40S. HIGHS IN THE UPPER 60S. WEST WINDS AROUND  
15 MPH.    
SUNDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 40S. HIGHS AROUND 70.    
MONDAY
 
MOSTLY CLEAR. LOWS IN THE MID 40S. HIGHS IN THE LOWER  
70S.  
 

 
 
SDZ266-172300-  
CENTRAL SOUTH DAKOTA PLAINS-  
INCLUDING THE CITIES OF DUPREE AND PHILIP  
301 AM MDT TUE SEP 17 2019  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
CHC OF WETTING RAIN.0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 89.  
MIN HUMIDITY........28 PERCENT.  
20-FOOT WINDS.......SOUTHWEST 10 TO 15 MPH INCREASING TO 15 TO 25  
MPH IN THE AFTERNOON.  
HAINES INDEX........6 HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE  
GROWTH.  
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH INCREASING TO AROUND 25  
MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR INCREASING TO VERY GOOD IN THE AFTERNOON.  
MIXING HEIGHT.......7600 TO 9500 FT AGL.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING CLEAR. SLIGHT  
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE  
EVENING.  
CHC OF WETTING RAIN.20 PERCENT.  
LAL.................2 UNTIL 2400, THEN 1.  
MIN TEMPERATURE.....AROUND 54.  
MAX HUMIDITY........78-84 PERCENT.  
20-FOOT WINDS.......WEST 15 TO 25 MPH.  
HAINES INDEX........3 VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....WEST AROUND 30 MPH.  
SMOKE DISPERSAL.....POOR.  
MIXING HEIGHT.......200 TO 300 FT AGL.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
CHC OF WETTING RAIN.0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 78.  
MIN HUMIDITY........30 PERCENT.  
20-FOOT WINDS.......WEST 10 TO 20 MPH WITH GUSTS TO AROUND 30 MPH.  
HAINES INDEX........5 MODERATE POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....WEST AROUND 25 MPH.  
SMOKE DISPERSAL.....GOOD.  
MIXING HEIGHT.......4300 TO 5400 FT AGL.  
 
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
MOSTLY CLEAR. LOWS IN THE MID 50S. HIGHS IN THE MID  
80S. SOUTHEAST WINDS 15 TO 20 MPH.    
FRIDAY
 
MOSTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS AROUND 60. HIGHS IN THE MID 70S. SOUTHWEST WINDS 15 TO  
20 MPH.    
SATURDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE LOWER 50S. HIGHS IN THE UPPER 60S. WEST WINDS 15 TO  
20 MPH.    
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
UPPER 40S. HIGHS AROUND 70.    
MONDAY
 
MOSTLY CLEAR. LOWS IN THE UPPER 40S. HIGHS IN THE LOWER  
70S.  
 

 
 
SDZ265-172300-  
SOUTH CENTRAL SOUTH DAKOTA-  
INCLUDING THE CITIES OF MARTIN, MISSION, WHITE RIVER, AND WINNER  
301 AM MDT TUE SEP 17 2019  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY.  
CHC OF WETTING RAIN.0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 89.  
MIN HUMIDITY........27-39 PERCENT.  
20-FOOT WINDS.......SOUTHWEST 15 TO 25 MPH.  
HAINES INDEX........6 HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE  
GROWTH.  
TRANSPORT WINDS.....SOUTHWEST 30 TO 35 MPH.  
SMOKE DISPERSAL.....FAIR INCREASING TO VERY GOOD IN THE AFTERNOON.  
MIXING HEIGHT.......6500 TO 8200 FT AGL.  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE EVENING.  
CHC OF WETTING RAIN.10 PERCENT.  
LAL.................2 UNTIL 2400, THEN 1.  
MIN TEMPERATURE.....52-58.  
MAX HUMIDITY........66-74 PERCENT.  
20-FOOT WINDS.......WEST 15 TO 25 MPH.  
GUSTS TO AROUND 35 MPH IN THE EVENING.  
HAINES INDEX........4 LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE  
GROWTH.  
TRANSPORT WINDS.....WEST 20 TO 25 MPH.  
SMOKE DISPERSAL.....POOR.  
MIXING HEIGHT.......200 TO 300 FT AGL.  
   
WEDNESDAY
 
 
SKY/WEATHER.........SUNNY.  
CHC OF WETTING RAIN.0 PERCENT.  
LAL.................1.  
MAX TEMPERATURE.....AROUND 78.  
MIN HUMIDITY........28-34 PERCENT.  
20-FOOT WINDS.......WEST 10 TO 15 MPH SHIFTING TO THE SOUTHWEST 5  
TO 10 MPH IN THE AFTERNOON.  
HAINES INDEX........5 MODERATE POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
TRANSPORT WINDS.....WEST AROUND 25 MPH DECREASING TO AROUND 15 MPH  
IN THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR.  
MIXING HEIGHT.......4100 TO 5200 FT AGL.  
 
   
FORECAST DAYS 3 THROUGH 7
 
   
THURSDAY
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE MID 80S.  
SOUTHEAST WINDS 15 TO 20 MPH.    
FRIDAY
 
BREEZY. MOSTLY CLOUDY. CHANCE OF SHOWERS AND  
THUNDERSTORMS. LOWS IN THE LOWER 60S. HIGHS IN THE UPPER 70S.  
SOUTH WINDS AROUND 25 MPH.    
SATURDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS.  
LOWS IN THE LOWER 50S. HIGHS AROUND 70. WEST WINDS AROUND 20 MPH.   
SUNDAY
 
PARTLY CLOUDY. SLIGHT CHANCE OF SHOWERS. LOWS IN THE  
UPPER 40S. HIGHS AROUND 70.    
MONDAY
 
MOSTLY CLEAR. LOWS AROUND 50. HIGHS IN THE LOWER 70S.  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab SD Page
The Nexlab WY Page Main Text Page