809  
FNUS73 KUNR 231952  
FWSUNR  
 
SPOT FORECAST FOR ANGOSTURA RX...SOUTH DAKOTA STATE  
NATIONAL WEATHER SERVICE RAPID CITY SD  
152 PM MDT TUE APR 23 2019  
 
FORECAST IS BASED ON IGNITION TIME OF 1400 MDT ON APRIL 23.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
A WEAK WIND SHIFT WILL MOVE THROUGH THE SOUTHERN  
BLACK WEDNESDAY AFTERNOON. WINDS WILL BE WESTERLY IN THE MORNING,  
THEN BECOMING NORTHEAST IN THE AFTERNOON. A FEW SHOWERS AND ISOLATED  
THUNDERSTORMS ARE POSSIBLE LATE WEDNESDAY AFTERNOON, WITH A BETTER  
CHANCE OF SHOWERS WEDNESDAY NIGHT.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....AROUND 73.  
MIN HUMIDITY........30-35 PERCENT.  
WIND (20 FT)........SOUTHWEST AROUND 10 MPH.  
CWR.................0 PERCENT.  
LAL.................1.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......5300 TO 5800 FT AGL.  
TRANSPORT WINDS.....WEST AROUND 15 MPH.  
SMOKE DISPERSAL.....GOOD.  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY.  
MIN TEMPERATURE.....AROUND 45.  
MAX HUMIDITY........70-75 PERCENT.  
WIND (20 FT)........WEST 5 TO 10 MPH.  
CWR.................0 PERCENT.  
LAL.................1.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......100 TO 600 FT AGL.  
TRANSPORT WINDS.....WEST AROUND 10 MPH.  
SMOKE DISPERSAL.....POOR.  
   
WEDNESDAY
 
 
SKY/WEATHER.........INCREASING CLOUDS. SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS IN THE AFTERNOON...MAINLY AFTER 3PM.  
MAX TEMPERATURE.....AROUND 73.  
MIN HUMIDITY........AROUND 35 PERCENT.  
WIND (20 FT)........WEST 5 TO 10 MPH IN THE MORNING SHIFTING TO THE NORTHEAST IN  
THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS IN THE AFTERNOON.  
CWR.................10 PERCENT.  
LAL.................1 UNTIL 1200, THEN 2.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......7100 TO 7600 FT AGL.  
TRANSPORT WINDS.....WEST 10 TO 15 MPH.  
SMOKE DISPERSAL.....GOOD.  
   
WEDNESDAY NIGHT
 
 
SKY/WEATHER.........CLOUDY. SHOWERS LIKELY.  
MIN TEMPERATURE.....AROUND 43.  
MIN HUMIDITY........AROUND 90 PERCENT.  
WIND (20 FT)........NORTHEAST AROUND 5 MPH.  
CWR.................50 PERCENT.  
LAL.................1.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......100 TO 600 FT AGL.  
TRANSPORT WINDS.....NORTH 10 MPH.  
SMOKE DISPERSAL.....POOR.  
 

 
FORECASTER...CARSTENS  
REQUESTED BY...MROTHLEUTNER  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1906982.0/UNR  
.DELDT 04/23/19  
.FORMATTERVERSION 1.0.26  
.EMAIL SDGPC@FIRENET.GOV  
 
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