878
FNUS75 KTFX 100845
FWSTFX
SPOT FORECAST FOR THS SOUTH SLOPE RX...USFS
NATIONAL WEATHER SERVICE GREAT FALLS MT
245 AM MDT MON MAR 10 2025
FORECAST IS BASED ON IGNITION TIME OF 0600 MDT ON MARCH 10.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A PACIFIC COLD FRONT WILL MOVE EAST ACROSS THE REGION THIS
MORNING BRINGING GUSTY WEST WINDS. CLOUDS INCREASE TODAY WITH A
FEW SHOWERS POSSIBLE FOLLOWING THE FRONTAL PASSAGE, BUT MOISTURE
WITH THIS SYSTEM IS LIMITED AND LITTLE OR NO MEASURABLE
PRECIPITATION IS EXPECTED. WINDS GRADUALLY DIMINISH THIS AFTERNOON AND
EVENING WITH MODERATE OR BETTER HUMIDITY RECOVERY TONIGHT.
TODAY
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING
MOSTLY CLOUDY (75-85 PERCENT). SLIGHT CHANCE OF
A RAIN OR SNOW SHOWER.
CWR.................10 PERCENT.
MAX TEMPERATURE.....46-51.
MIN HUMIDITY........32-37 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 15 TO 20 MPH DECREASING TO AROUND 10
MPH LATE IN THE AFTERNOON. GUSTS UP TO 40 MPH
DECREASING TO 30 MPH LATE IN THE AFTERNOON.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WINDS.....WEST 35 TO 40 MPH, DECREASING TO 25 TO 30 MPH
LATE IN THE AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........38 40 38 29 43 36 54 68 75 77 81 80
WEATHER COV.....SCH SCH SCH SCH SCH SCH
WEATHER TYPE....RS SN SN RN RS RS
TSTM COV........
CWR.............10 10 10 10 10 10 10 10 10 10 10 10
TEMP............40 38 39 39 42 45 47 47 48 47 46 45
RH..............48 53 56 57 52 46 40 37 37 37 37 41
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..15 15 15 15 15 20 20 20 15 15 15 10
20 FT WIND GUST.35 35 35 40 40 40 40 35 30 30 30 25
MIX HGT (KFT)...1.0 1.0 1.0 1.0 3.0 4.0 4.5 5.5 5.5 5.5 4.5 4.5
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.20 15 20 20 35 40 35 35 30 25 25 20
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT).
CWR.................0 PERCENT.
MIN TEMPERATURE.....29-34.
MAX HUMIDITY........66-71 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WEST WINDS 5 TO 10 MPH, BECOMING SOUTHWEST
AFTER 3 AM.
MIXING HEIGHT.......1000 FT AGL.
TRANSPORT WINDS.....WEST 15 TO 20 MPH SHIFTING TO THE SOUTHWEST
AROUND 10 MPH OVERNIGHT.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........83 77 75 69 67 66 73 58 49 47 50 57
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............42 38 38 37 35 35 35 34 34 33 33 32
RH..............48 58 62 64 66 68 70 69 70 71 71 70
20 FT WIND DIR..W W W SW SW SW SW SW SW S S SW
20 FT WIND SPD..10 5 5 0 0 0 0 0 0 0 5 5
20 FT WIND GUST.20 15 10 10 5 5 5 5 10 10 10 10
MIX HGT (KFT)...3.5 2.0 1.5 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
TRANSP WIND DIR.W W W SW SW SW SW SW SW SW SW SW
TRANSP WIND SPD.20 15 10 10 10 10 10 10 10 10 10 10
TUESDAY
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT).
CWR.................5 PERCENT.
MAX TEMPERATURE.....49-54.
MIN HUMIDITY........34-39 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTHWEST WINDS 5 TO 10 MPH SHIFTING TO THE
WEST IN THE AFTERNOON. AFTERNOON GUSTS TO
20 MPH.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH INCREASING TO WEST 20 TO
25 MPH IN THE AFTERNOON.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........61 55 56 52 45 55 64 64 64 77 77 77
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............10 10 10 10 10 10 0 0 0 0 0 0
TEMP............33 34 34 35 39 44 47 49 50 51 51 49
RH..............70 67 68 65 59 53 46 41 39 39 39 42
20 FT WIND DIR..SW S SW SW SW W W W W W W W
20 FT WIND SPD..5 5 5 5 5 5 10 10 10 10 10 10
20 FT WIND GUST.10 10 10 10 15 15 20 20 20 20 20 20
MIX HGT (KFT)...1.0 1.0 1.0 1.0 3.0 4.0 5.0 5.5 5.5 5.5 5.0 4.0
TRANSP WIND DIR.SW S S SW SW W W W W W W W
TRANSP WIND SPD.10 10 10 15 20 20 25 25 20 20 15 15
FORECASTER...HOENISCH
REQUESTED BY...WILL MENNING
TYPE OF REQUEST...PRESCRIBED
.TAG 2505039.4/TFX
.DELDT 03/10/25
.FORMATTERVERSION 2.0.0
.EMAIL LEWIS.TAFELMEYER@USDA.GOV,WILLIAM.MENNING@USDA.GOV,PHILIP.QUIGLEY@USDA.GOV
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