165  
FNUS73 KUNR 131749  
FWSUNR  
 
SPOT FORECAST FOR HUTCHISON RANCH SLASH...PINE RIDGE AGENCY  
NATIONAL WEATHER SERVICE RAPID CITY SD  
1049 AM MST THU FEB 13 2020  
 
FORECAST IS BASED ON IGNITION TIME OF 1100 MST ON FEBRUARY 13.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
COLD WEATHER WILL BEGIN TO MODERATE TODAY, LEADING INTO A QUICK  
WARMUP TO NEAR AND ABOVE AVERAGE TEMPERATURES FOR FRIDAY AND THE  
WEEKEND. BREEZY SOUTH TO SOUTHWEST WINDS WILL DEVELOP LATER TONIGHT  
INTO FRIDAY AS THE WARMER AIR PUSHES INTO THE AREA. DRY WEATHER IS EXPECTED UNTIL  
SUNDAY EVENING WHEN THERE IS A CHANCE OF RAIN OR SNOW.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....AROUND 26.  
MIN HUMIDITY........48 PERCENT.  
WIND (20 FT)........SOUTH-SOUTHWEST 5 TO 8 MPH BECOMING SOUTH-SOUTHEAST  
5 TO 8 MPH AFTER 2 PM MST.  
CWR.................0 PERCENT.  
LAL.................1.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......2200 TO 2700 FT AGL.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
SMOKE DISPERSAL.....POOR.  
   
TONIGHT
 
 
SKY/WEATHER.........CLEAR.  
MIN TEMPERATURE.....AROUND 13.  
MAX HUMIDITY........77 PERCENT.  
WIND (20 FT)........SOUTH 10 TO 20 MPH.  
CWR.................0 PERCENT.  
LAL.................1.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......100 TO 600 FT AGL.  
TRANSPORT WINDS.....SOUTH 20 TO 25 MPH.  
SMOKE DISPERSAL.....POOR.  
   
FRIDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....AROUND 49.  
MIN HUMIDITY........47 PERCENT.  
WIND (20 FT)........SOUTHWEST 10 TO 15 MPH WITH GUSTS TO AROUND 25  
MPH.  
CWR.................0 PERCENT.  
LAL.................1.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......500 TO 1000 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 20 TO 25 MPH.  
SMOKE DISPERSAL.....POOR.  
 

 
FORECASTER...GR  
REQUESTED BY...KYLE GOLUS  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2002246.0/UNR  
.DELDT 02/13/20  
.FORMATTERVERSION 1.0.26  
.EMAIL KYLE.GOLUS@BIA.GOV  
 
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