441
FNUS75 KTFX 111035
FWSTFX
SPOT FORECAST FOR TWO CALF UNIT A RX...BLM
NATIONAL WEATHER SERVICE GREAT FALLS MT
435 AM MDT SAT APR 11 2026
FORECAST IS BASED ON IGNITION TIME OF 0600 MDT ON APRIL 11.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
TEMPERATURES PEAK ANOTHER 5 TO 10 DEGREES WARMER THAN THAT OF
FRIDAY AS UPPER LEVEL RIDGING DRIFTS OVER CENTRAL AND NORTH
CENTRAL MONTANA. VARIABLE WINDS THROUGH THE MORNING HOURS WILL
BECOME MORE NORTHERLY DURING THE AFTERNOON BEFORE BACKING TO THE
WEST DURING THE EARLY EVENING HOURS AS A PACIFIC COLD FRONT
SLIDES EAST ACROSS THE NORTHERN ROCKIES. THIS COLD FRONT WILL
BRING INCREASING CHANCES FOR SHOWERS AND EVEN A FEW THUNDERSTORMS
FROM THE MID-AFTERNOON THROUGH EVENING HOURS ACROSS THE INCIDENT
AREA, WITH ADDITIONAL OPPORTUNITIES FOR PRECIPITATION ARRIVING BY
SUNDAY AFTERNOON AND PERSISTING THROUGH MONDAY NIGHT.
TODAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). SLIGHT CHANCE OF
RAIN LATE IN THE AFTERNOON.
CWR.................5 PERCENT.
CHANCE OF THUNDER...8 PERCENT.
MAX TEMPERATURE.....76-81.
MIN HUMIDITY........20-25 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......VARIABLE WINDS OF BETWEEN 5 TO 10 MPH THROUGH
THE EARLY AFTERNOON BECOMING NORTHWEST AROUND 10
MPH BY THE LATE AFTERNOON.
MIXING HEIGHT.......8000 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 0 TO 5 MPH SHIFTING TO THE SOUTHWEST
EARLY IN THE AFTERNOON, THEN INCREASING TO
AROUND 15 MPH LATE IN THE AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........39 29 47 37 34 35 17 12 28 34 43 46
WEATHER COV..... SCH SCH
WEATHER TYPE.... RN RN
TSTM COV........
CWR.............0 0 0 0 0 0 10 10 10 10 10 10
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 10 10 10
TEMP............42 41 44 48 56 61 66 70 74 76 76 77
RH..............70 68 63 56 48 42 36 32 27 25 24 25
20 FT WIND DIR..SE S SE E SE E SE E N NW NW N
20 FT WIND SPD..0 0 0 0 0 0 5 5 5 5 5 10
20 FT WIND GUST.5 5 5 5 5 5 10 10 15 15 15 15
MIX HGT (KFT)...0.5 0.5 0.5 0.5 1.0 1.0 1.5 2.5 5.0 6.5 8.0 6.0
TRANSP WIND DIR.SE SE SE E SE SE SW SW SW SW SW W
TRANSP WIND SPD.5 5 0 5 5 5 5 10 15 15 15 15
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING
PARTLY CLOUDY (20-30 PERCENT). SLIGHT CHANCE OF
THUNDERSTORMS EARLY IN THE EVENING. CHANCE OF
RAIN SHOWERS EARLY IN THE EVENING, THEN SLIGHT
CHANCE OF RAIN SHOWERS LATE IN THE EVENING.
CWR.................20 PERCENT DECREASING TO 5 PERCENT OVERNIGHT.
CHANCE OF THUNDER...17 PERCENT.
MIN TEMPERATURE.....45-50.
MAX HUMIDITY........69-74 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 10 TO 15 MPH. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE
EVENING.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....WEST 15 TO 20 MPH.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........63 65 84 82 86 74 62 61 61 38 18 16
WEATHER COV.....CHC CHC CHC CHC SCH
WEATHER TYPE....RW RW RW RW RW
TSTM COV........SCH SCH SCH
CWR.............20 20 20 20 20 20 10 10 10 10 10 10
CHC OF THDR (%).20 20 20 10 10 10 0 0 0 0 0 0
TEMP............74 69 65 60 59 57 54 53 51 50 49 48
RH..............27 36 44 54 57 61 64 67 68 68 70 74
20 FT WIND DIR..W NW W W W W W W W W W W
20 FT WIND SPD..10 15 15 15 15 15 10 10 10 10 10 10
20 FT WIND GUST.20 20 20 20 20 20 20 20 20 20 20 15
MIX HGT (KFT)...4.5 1.0 0.5 1.0 1.0 1.0 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.15 15 20 20 20 20 20 20 20 20 20 20
SUNDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT) THEN BECOMING PARTLY
SUNNY (50-60 PERCENT). CHANCE OF RAIN SHOWERS
IN THE AFTERNOON.
CWR.................5 PERCENT.
CHANCE OF THUNDER...3 PERCENT.
MAX TEMPERATURE.....62-67.
MIN HUMIDITY........33-38 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......NORTHWEST WINDS AROUND 10 MPH.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WINDS.....NORTHWEST 10 TO 15 MPH SHIFTING TO THE
NORTHEAST LATE IN THE AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........24 24 24 19 19 19 51 51 51 60 60 60
WEATHER COV..... CHC CHC CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........
CWR.............10 10 10 10 10 10 10 10 10 10 10 10
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............47 47 49 51 54 57 60 62 63 64 64 64
RH..............75 76 71 64 58 53 48 43 39 37 35 36
20 FT WIND DIR..W W W W W W NW NW NW NW NW NW
20 FT WIND SPD..10 10 10 10 10 10 10 10 10 10 10 10
20 FT WIND GUST.15 15 15 15 15 15 20 20 20 15 15 15
MIX HGT (KFT)...0.5 0.5 1.0 2.0 2.5 3.5 4.0 5.0 5.0 5.5 5.5 5.0
TRANSP WIND DIR.W W W NW NW W W W W W NW NE
TRANSP WIND SPD.15 15 15 15 15 15 15 10 10 10 10 10
FORECASTER...MOLDAN
REQUESTED BY...JAY PETERMAN
TYPE OF REQUEST...PRESCRIBED
.TAG 2609513.3/TFX
.DELDT 04/11/26
.FORMATTERVERSION 2.0.0
.EMAIL JPETERMAN@BLM.GOV, TFX.OPS@NOAA.GOV
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