585  
FNUS73 KFGF 211613  
FWSFGF  
 
SPOT FORECAST FOR RX UNIT 17...MN-RLA  
NATIONAL WEATHER SERVICE GRAND FORKS ND  
1113 AM CDT SAT APR 21 2018  
 
FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON APRIL 21.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL  
WEATHER SERVICE.  
 
PLEASE CALL THE NWS IN GRAND FORKS AT 701-795-5127 FOR ADDITIONAL  
INFORMATION AND MONITOR OUR WEBSITE (WWW.WEATHER.GOV/FGF) OR NOAA  
ALL-HAZARDS RADIO FOR THE LATEST UPDATES.  
   
DISCUSSION
 
 
EXPECT INCREASING SOUTH WINDS TODAY, FROM LIGHT SOUTH WINDS THIS  
MORNING TO UPWARDS OF 10 MPH SUSTAINED, WITH GUSTS TO 15 MPH THIS  
AFTERNOON. SMOKE DISPERSAL WILL BE GOOD FROM MID DAY THROUGH THE  
AFTERNOON. AFTERNOON TEMPERATURES WILL AGAIN CLIMB INTO THE LOW  
TO MID 60S, WITH MINIMUM RELATIVE HUMIDITY VALUES MAINLY IN THE  
UPPER 20S TO 30S AND SLIGHTLY HIGHER VALUES OVER LINGERING SNOW  
COVER.  
 
THE AREAS OF LOWER RELATIVE HUMIDITIES TODAY, INCLUDING  
MUCH OF NORTHWEST AND WEST CENTRAL MINNESOTA, WILL BE THE FOCUS OF  
CONCERN FOR TOMORROW, AS WINDS CONTINUE TO INCREASE. NEAR  
CRITICAL FIRE WEATHER CONDITIONS WILL BE POSSIBLE SUNDAY IN  
PORTIONS OF NORTHWESTERN MINNESOTA.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....59-64.  
MIN HUMIDITY........34 PERCENT.  
WIND (20 FT)........SOUTH WINDS 5 TO 8 MPH.  
MIXING HEIGHT.......3300 FT AGL, INCREASING TO 5600 FT AGL IN THE  
AFTERNOON.  
MIXING WINDS........SOUTHWEST 13 TO 14 MPH.  
 
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM  
SKY (%).........31 17 20 9 10 12 13 15  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............50 52 55 57 58 59 58 56  
RH..............61 54 47 42 37 34 34 38  
20 FT WIND DIR..S S S S S S S S  
20 FT WIND SPD..7 7 8 8 8 8 8 8  
20 FT WIND GUST.10 10 15 15 15 15 15 15  
MIX HGT (KFT)...3.3 3.3 5.1 5.6 5.6 5.6 5.6 5.6  
MIXING WIND DIR.SW SW SW SW SW SW SW SW  
MIXING WIND SPD.13 13 14 14 14 14 14 14  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR.  
MIN TEMPERATURE.....35-40.  
MAX HUMIDITY........79 PERCENT.  
WIND (20 FT)........SOUTH WINDS 5 TO 7 MPH.  
MIXING HEIGHT.......300 FT AGL.  
MIXING WINDS........SOUTH 15 TO 17 MPH.  
 
TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM  
SKY (%).........16 10 7 6 9 12  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
TEMP............54 49 44 40 39 38  
RH..............41 52 65 79 79 79  
20 FT WIND......S 7 S 7 S 7 S 7 S 7 S 7  
20 FT WIND GUST.10 10 10 10 10 10  
MIX HGT (FT)....300 300 300 300 300 300  
MIXING WIND.....S 15 S 15 S 15 S 17 S 17 S 17  
   
SUNDAY
 
 
SKY/WEATHER.........SUNNY.  
MAX TEMPERATURE.....62-67.  
MIN HUMIDITY........31 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 12 TO 17 MPH WITH GUSTS UP TO  
25 MPH.  
MIXING HEIGHT.......300 FT AGL INCREASING TO 6300 FT AGL IN THE  
AFTERNOON.  
MIXING WINDS........SOUTHWEST 25 TO 28 MPH.  
 
TIME (CDT) 7 AM 10 AM 1 PM 4 PM  
SKY (%).........13 11 15 19  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE  
TSTM COV........  
TEMP............38 52 58 64  
RH..............76 50 40 31  
20 FT WIND......S 13G25 S 13G25 SW 17G25 SW 17G25  
MIX HGT (FT)....300 300 6300 6300  
MIXING WIND.....SW 25 SW 25 SW 28 SW 28  
 

 
FORECASTER...BP  
REQUESTED BY...WENDY PEMBERTON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1807268.0/FGF  
.EMAIL WPEMBERTON@REDLAKENATION.ORG  
 
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