907  
FNUS73 KUNR 271720  
FWSUNR  
 
SPOT FORECAST FOR PANTHEON...US FOREST SERVICE  
NATIONAL WEATHER SERVICE RAPID CITY SD  
1020 AM MST FRI JAN 27 2023  
 
FORECAST IS BASED ON IGNITION TIME OF 1100 MST ON JANUARY 27.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
TEMPERATURES WILL BE NEAR TO SLIGHTLY ABOVE TODAY  
BEFORE AN ARCTIC COLD FRONT PASSES THROUGH LATE TODAY AND TONIGHT.  
WINDS OUT OF THE NORTHWEST TODAY WILL SHIFT TO THE NORTH AND  
NORTHEAST FOLLOWING PASSAGE OF THE FRONT. SNOWFALL IS EXPECTED TO  
DEVELOP AROUND THE SPOT AREA THIS AFTERNOON AND EVENING AS THE  
FRONT CROSSES THE REGION. SEVERAL INCHES OF SNOW WILL BE POSSIBLE  
AT THE SPOT AREA BETWEEN THIS AFTERNOON AND SATURDAY EVENING.  
TEMPERATURES WILL BE WELL BELOW AVERAGE THIS WEEKEND THROUGH THE  
EARLY PART OF NEXT WEEK.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). SLIGHT CHANCE OF  
SNOW LATE IN THE MORNING, THEN SNOW IN THE  
AFTERNOON.  
MAX TEMPERATURE.....AROUND 38.  
MIN HUMIDITY........61 PERCENT.  
WIND (20 FT)........NORTHWEST WINDS AROUND 15 MPH SHIFTING TO THE  
NORTHEAST IN THE AFTERNOON. GUSTS UP TO 18 MPH.  
CWR.................50 PERCENT.  
LAL.................1.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......2300 TO 2800 FT AGL.  
TRANSPORT WINDS.....WEST AROUND 20 MPH SHIFTING TO THE SOUTHEAST IN  
THE AFTERNOON.  
SMOKE DISPERSAL.....POOR.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY (95-100 PERCENT). SNOW.  
MIN TEMPERATURE.....AROUND 6 ABOVE.  
MAX HUMIDITY........100 PERCENT.  
WIND (20 FT)........NORTHEAST WINDS AROUND 10 MPH.  
CWR.................85 PERCENT.  
LAL.................1.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......1200 TO 1700 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 15 TO 20 MPH.  
SMOKE DISPERSAL.....POOR.  
   
SATURDAY
 
 
SKY/WEATHER.........CLOUDY (90-100 PERCENT). SNOW.  
MAX TEMPERATURE.....AROUND 12.  
MIN HUMIDITY........62 PERCENT.  
WIND (20 FT)........NORTH WINDS AROUND 10 MPH.  
CWR.................60 PERCENT.  
LAL.................1.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......1900 TO 2400 FT AGL.  
TRANSPORT WINDS.....NORTH 10 TO 20 MPH.  
SMOKE DISPERSAL.....POOR.  
 

 
FORECASTER...AD  
REQUESTED BY...ROGERS  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2301358.2/UNR  
.DELDT 01/27/23  
.FORMATTERVERSION 2.0.0  
.EMAIL CHRISTOPHER.ROGERS@USDA.GOV  
 
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