021
FNUS75 KTFX 221010
FWSTFX
SPOT FORECAST FOR ARROWLEAF...STATE/LOCAL
NATIONAL WEATHER SERVICE GREAT FALLS MT
310 AM MST SUN FEB 22 2026
FORECAST IS BASED ON IGNITION TIME OF 0504 MST ON FEBRUARY 22.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
..HIGH WIND WATCH IN EFFECT FOR MONDAY THROUGH MONDAY NIGHT
DISCUSSION
UPPER LEVEL HIGH PRESSURE CONTINUES TO SHIFT EAST ACROSS THE
NORTHERN ROCKIES TODAY WITH A PERIOD OF BROKEN TO OVERCAST HIGH
CLOUDS THIS MORNING BEFORE SKIES PARTIALLY CLEAR THIS AFTERNOON
THROUGH THIS EVENING. A COLD AIRMASS LINGERS THIS MORNING BUT WILL
BEGIN TO RECEDE BACK FROM THE ROCKY MOUNTAIN FRONT THIS
AFTERNOON. TIMING OF THE COLD AIR RECEDING IS SOMEWHAT UNCERTAIN
BUT MOST LIKELY TO OCCUR THIS AFTERNOON WITH WINDS TURNING
SOUTHERLY AND TEMPERATURES QUICKLY RISING TO THE MID-UPPER 30S.
WINDY CONDITIONS DEVELOP TONIGHT THROUGH MONDAY WITH A SHORT
PERIOD OF SOME PATCHY BLOWING/DRIFTING SNOW POSSIBLE AS THE GUSTY
WINDS DEVELOP OVERNIGHT.
A FAST AND MOIST WESTERLY FLOW WILL REMAIN INPLACE ACROSS THE
NORTHERN ROCKIES THROUGH MUCH OF THE UPCOMING WEEK WITH VERY WINDY
CONDITIONS LIKELY BY MONDAY AFTERNOON AND POTENTIAL FOR
ADDITIONAL STRONG WIND PERIODS TUESDAY THROUGH THURSDAY.
PRECIPITATION WILL SPILL EAST OF THE CONTINENTAL DIVIDE AT TIMES LATE
MONDAY AND TUESDAY BRINGING RAIN OR SNOW SHOWERS BUT WIDESPREAD
WETTING PRECIPITATION IS NOT ANTICIPATED.
TODAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING
MOSTLY SUNNY (35-45 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....35-40.
MIN HUMIDITY........42-47 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH TO SOUTHEAST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......2500 FT AGL.
TRANSPORT WINDS.....SOUTH 5 TO 10 MPH.
TIME (MST) 5AM 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........78 79 78 85 76 66 38 19 10 10 9 9 11
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 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 0
TEMP............7 9 10 12 17 21 26 31 34 37 39 38 38
RH..............62 62 60 61 57 56 53 50 47 47 47 48 49
20 FT WIND DIR..SW S S S S SE SE SE SE SE SE SE S
20 FT WIND SPD..5 5 5 5 5 5 5 10 10 10 10 10 10
20 FT WIND GUST.10 10 10 10 15 15 15 15 20 20 20 20 25
MIX HGT (KFT)...1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.5 2.0 2.5 2.0 1.5 1.0
TRANSP WIND DIR.S S S S S S S S S S S S S
TRANSP WIND SPD.10 10 10 10 10 10 5 10 10 10 10 10 10
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT) THEN BECOMING
MOSTLY CLOUDY (60-70 PERCENT). SLIGHT CHANCE OF
RAIN IR SNOW SHOWERS AFTER 3 AM.
PATCHY BLOWING SNOW DEVELOPING.
CWR.................5 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....28-33.
MAX HUMIDITY........51-56 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......SOUTH WINDS AROUND 10 MPH SHIFTING TO THE SOUTHWEST
WITH GUSTS UP TO 40 MPH AFTER MIDNIGHT.
MIXING HEIGHT.......1000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 10 TO 15 MPH INCREASING TO WEST
AROUND 30 MPH.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........10 6 7 8 9 10 12 11 22 25 28 63
WEATHER COV..... SCH SCH CHC
WEATHER TYPE.... RS RN SN
TSTM COV........
CWR.............0 0 0 0 0 10 10 10 10 10 10 10
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............36 33 32 34 35 35 34 36 36 33 37 38
RH..............50 53 52 52 52 52 52 51 51 54 54 54
20 FT WIND DIR..S S S SW SW SW SW W W W W W
20 FT WIND SPD..10 10 10 10 10 15 15 15 15 15 15 15
20 FT WIND GUST.20 20 20 25 25 30 30 35 35 40 40 40
MIX HGT (KFT)...1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
TRANSP WIND DIR.SW SW SW W W W W W W W W W
TRANSP WIND SPD.10 10 15 15 20 20 25 25 30 30 30 30
MONDAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). PATCHY BLOWING
SNOW EARLY IN THE MORNING. CHANCE OF SNOW IN
THE MORNING. RAIN OR SNOW SHOWERS LIKELY IN THE
AFTERNOON.
CWR.................5 PERCENT INCREASING TO 20 PERCENT LATE IN THE
MORNING.
CHANCE OF THUNDER...ZERO PERCENT.
MAX TEMPERATURE.....46-51.
MIN HUMIDITY........49-54 PERCENT.
WIND (20 FT)........
SLOPE/VALLEY.......WINDY. WEST WINDS 15 TO 20 MPH WITH GUSTS TO
AROUND 40 MPH INCREASING TO SOUTHWEST 25 TO 30
MPH WITH GUSTS TO AROUND 50 MPH LATE IN THE
MORNING.
MIXING HEIGHT.......4000 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 30 TO 35 MPH.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........63 63 63 63 63 79 79 79 79 79 79 80
WEATHER COV.....CHC CHC CHC CHC CHC LKY LKY LKY LKY LKY LKY LKY
WEATHER TYPE....SN SN RS RS RS RN RN RN RN RN RN RS
TSTM COV........
CWR.............10 10 10 10 10 20 20 20 20 20 20 20
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............38 40 40 41 44 46 47 47 47 47 45 44
RH..............54 54 55 55 55 54 54 54 54 54 55 56
20 FT WIND DIR..W W W W W SW SW SW SW SW SW SW
20 FT WIND SPD..15 15 20 20 20 25 25 25 30 30 30 30
20 FT WIND GUST.40 40 40 40 40 45 45 45 50 50 50 50
MIX HGT (KFT)...1.5 1.5 1.5 2.0 3.0 3.5 4.0 4.0 4.0 3.5 2.5 2.0
TRANSP WIND DIR.W W W W SW SW SW SW SW SW SW SW
TRANSP WIND SPD.30 30 30 30 30 35 35 35 35 35 30 30
FORECAST DAYS 3 THROUGH 5
TUESDAY
WINDY. MOSTLY CLOUDY. SNOW AND RAIN SHOWERS LIKELY. LOWS IN THE LOWER
30S. HIGHS IN THE MID 40S. WEST WINDS AROUND 25 MPH.
WEDNESDAY
WINDY. MOSTLY CLOUDY. SNOW SHOWERS LIKELY. LOWS IN THE UPPER 20S. HIGHS
IN THE UPPER 30S. WEST WINDS AROUND 35 MPH.
THURSDAY
VERY WINDY. MOSTLY CLOUDY. CHANCE OF SNOW. LOWS AROUND 30. HIGHS
IN THE LOWER 40S. WEST WINDS AROUND 45 MPH.
FORECASTER...HOENISCH
REQUESTED BY...BOB CULBRETH
TYPE OF REQUEST...PRESCRIBED
.TAG 2602860.5/TFX
.DELDT 02/22/26
.FORMATTERVERSION 2.0.0
.EMAIL BOB.CULBRETH@MT.GOV
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