525  
FNUS75 KGGW 011117  
FWSGGW  
 
SPOT FORECAST FOR STATE LINE RX...FWS MED  
NATIONAL WEATHER SERVICE GLASGOW MT  
517 AM MDT FRI MAY 1 2026  
 
FORECAST IS BASED ON IGNITION TIME OF 0800 MDT ON MAY 01.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE AT (406) 228-9622.  
   
DISCUSSION  
UPPER LEVEL RIDGE WILL BRING WARM AND DRY WEATHER  
TODAY WITH MOSTLY CLEAR SKIES. VARIABLE WINDS AROUND 5 MPH EARLY  
WILL BECOME WEST BY 9 AM AND VARY FROM WEST TO NORTHWEST AROUND 10  
MPH THIS AFTERNOON. WINDS WILL TURN TO THE SOUTH TONIGHT. A DRY  
COLD FRONT BETWEEN 5 AM AND 6 AM ON SATURDAY WILL SHIFT WINDS TO  
THE NORTHWEST AND BECOME NORTH BY 9 AM AND INCREASE TO 15 TO 20 MPH  
BY NOON.  
   
REST OF TODAY  
 
SKY/WEATHER.........SUNNY (15-25 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....AROUND 67.  
MIN HUMIDITY........20 PERCENT.  
WIND (20 FT)........WEST WINDS 7 TO 8 MPH SHIFTING TO THE NORTHWEST  
8 TO 9 MPH IN THE AFTERNOON.  
MIXING HEIGHT.......7800 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 10 TO 14 MPH.  
 
TIME (MDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........40 31 26 13 10 2 4 6 3 4  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0 0  
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0  
TEMP............40 45 53 55 59 60 63 65 67 67  
RH..............44 37 31 27 26 25 23 22 20 20  
20 FT WIND DIR..W W W W NW NW NW NW NW NW  
20 FT WIND SPD..7 8 8 8 9 9 9 9 9 8  
20 FT WIND GUST.10 12 12 13 14 14 14 14 14 14  
MIX HGT (KFT)...0.7 1.5 2.9 6.4 6.9 7.2 7.7 7.8 7.6 7.6  
TRANSP WIND DIR.W W NW NW NW NW NW NW NW W  
TRANSP WIND SPD.10 10 10 12 13 13 14 12 12 10  
   
TONIGHT  
 
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (65-75 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF THUNDER...0 PERCENT.  
MIN TEMPERATURE.....AROUND 42.  
MAX HUMIDITY........60 PERCENT.  
WIND (20 FT)........WEST WINDS AROUND 8 MPH SHIFTING TO THE  
SOUTHWEST EARLY IN THE EVENING, THEN SHIFTING  
TO THE SOUTH 7 TO 8 MPH EARLY IN THE EVENING  
SHIFTING TO THE WEST AROUND 9 MPH AFTER 3 AM  
SHIFTING TO THE NORTHWEST AROUND 10 MPH.  
MIXING HEIGHT.......400 FT AGL.  
TRANSPORT WINDS.....WEST AROUND 10 MPH SHIFTING TO THE SOUTH EARLY  
IN THE EVENING, THEN SHIFTING TO THE SOUTHWEST  
AROUND 13 MPH OVERNIGHT SHIFTING TO THE  
NORTHWEST AROUND 14 MPH EARLY IN THE MORNING.  
 
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........6 8 31 28 46 41 50 50 49 52 49 69  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0 0 0 0  
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............66 64 59 53 51 48 47 45 45 44 42 44  
RH..............20 23 29 35 37 40 43 45 45 45 50 50  
20 FT WIND DIR..W SW S S S S S S S SW W NW  
20 FT WIND SPD..8 8 7 7 7 7 8 8 8 8 9 10  
20 FT WIND GUST.13 12 11 10 11 11 13 13 13 14 14 14  
MIX HGT (KFT)...7.7 3.3 0.7 0.4 0.4 0.4 0.5 0.5 0.4 0.4 0.4 0.6  
TRANSP WIND DIR.W W SE S S S SW S SW SW W NW  
TRANSP WIND SPD.10 10 9 9 12 13 13 15 13 13 13 14  
   
SATURDAY  
 
SKY/WEATHER.........PARTLY SUNNY (65-75 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF THUNDER...0 PERCENT.  
MAX TEMPERATURE.....AROUND 63.  
MIN HUMIDITY........34 PERCENT.  
WIND (20 FT)........NORTH WINDS 11 TO 18 MPH WITH GUSTS TO AROUND  
24 MPH.  
MIXING HEIGHT.......6100 FT AGL.  
TRANSPORT WINDS.....NORTH 14 TO 23 MPH.  
 
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........81 81 81 69 69 69 64 64 64 55 55 55  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0 0 0 0  
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............44 46 50 51 55 57 59 61 62 63 63 62  
RH..............57 58 59 60 56 52 48 43 39 36 34 33  
20 FT WIND DIR..NW NW NW N N N N N N N N N  
20 FT WIND SPD..11 11 11 15 15 15 17 17 17 18 18 18  
20 FT WIND GUST.17 17 17 20 20 20 24 24 24 24 24 24  
MIX HGT (KFT)...0.6 0.8 1.2 1.7 2.4 3.2 4.0 4.8 5.5 5.9 6.1 5.9  
TRANSP WIND DIR.NW N N N N N N N N N N N  
TRANSP WIND SPD.14 15 17 20 21 23 23 23 23 23 23 23  
 
 
FORECASTER...FORRESTER  
REQUESTED BY...CODY WHITNEY  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2612355.0/GGW  
.DELDT 05/01/26  
.FORMATTERVERSION 2.0.0  
.EMAIL CODY_WHITNEY@FWS.GOV  
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