884
FNUS75 KTFX 201714
FWSTFX
SPOT FORECAST FOR WOLF CREEK HAZMAT 02/20/2026...LEWIS AND CLARK COUNTY EMERGENCY MANAGEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1014 AM MST FRI FEB 20 2026
FORECAST IS BASED ON FORECAST START TIME OF 1000 MST ON FEBRUARY 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
THE PRIMARY CONCERN FOR THIS INCIDENT WILL BE SOUTHERLY WINDS
SHIFTING TO A MORE WEST AND NORTHWESTERLY DIRECTION BY THE EARLY
AFTERNOON HOURS DUE TO A PASSING UPPER LEVEL WEATHER SYSTEM. THE
CANYON MAY ALSO SHIFT WINDS MORE NORTHERLY THAN OTHER AREAS LESS
INFLUENCED BY TERRAIN. THERE WILL ALSO BE SCATTERED SNOW SHOWERS
THAT DEVELOP IN THE AREA THIS AFTERNOON, BUT ACCUMULATIONS WILL
HIGHLY LOCALIZED AND GENERALLY LESS THAN A HALF INCH.
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY (50-75 PERCENT). CHANCE OF SNOW
SHOWERS IN THE LATE MORNING AND EARLY
AFTERNOON.
CHANCE OF PCPN......20 PERCENT.
MAX TEMPERATURE.....25-30.
MIN HUMIDITY........38-43 PERCENT.
SURFACE WINDS (MPH).SOUTHERLY WINDS AROUND 10 TO 15 MPH BECOMING TO THE
WEST TO NORTHWEST IN THE AFTERNOON.
TIME (MST) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........56 54 54 55 54 54 54 23
WEATHER COV.....SCH SCH SCH SCH SCH SCH
WEATHER TYPE....SW SW SW SW SW SW
TSTM COV........
CHC OF PCPN (%).20 20 20 20 20 20 10 10
TEMP............16 20 23 24 25 26 25 25
RH..............58 57 50 45 43 43 43 43
SURFACE WND DIR.SE S SW W NW NW W W
SURFACE WND SPD.10 10 10 10 10 10 5 5
SURFACE WND GST.15 15 15 15 15 15 15 15
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) THEN BECOMING
MOSTLY CLOUDY (60-70 PERCENT).
CHANCE OF PCPN......10 PERCENT.
MIN TEMPERATURE.....11-16.
MAX HUMIDITY........62-67 PERCENT.
SURFACE WINDS (MPH).WEST WINDS AROUND 5 MPH BECOMING
SOUTHWEST EARLY IN THE EVENING.
TIME (MST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........28 29 26 30 26 41 48 54 57 60 63 71
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 10 10 0 0 0 10 0 0 10
TEMP............22 19 18 17 17 16 16 16 15 15 16 14
RH..............47 53 56 58 60 60 62 60 61 60 60 64
SURFACE WND DIR.W SW SW SW SW SW SW S SW S S S
SURFACE WND SPD.5 5 5 5 5 5 5 5 5 5 5 5
SURFACE WND GST.10 10 15 10 10 10 10 10 10
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT).
CHANCE OF PCPN......10 PERCENT.
MAX TEMPERATURE.....30-35.
MIN HUMIDITY........41-46 PERCENT.
SURFACE WINDS (MPH).SOUTH WINDS AROUND 5 MPH SHIFTING TO THE NORTH
EARLY IN THE MORNING, THEN SHIFTING TO THE
NORTHEAST LATE IN THE AFTERNOON.
TIME (MST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........71 71 57 57 57 55 55 55 43 43 43 27
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).10 10 10 10 10 0 0 0 0 0 0 0
TEMP............15 15 15 20 21 24 27 29 31 32 31 30
RH..............65 65 67 62 60 53 53 50 48 46 45 46
SURFACE WND DIR.S S N N N NE NE NE NE NE NE NE
SURFACE WND SPD.5 5 5 5 5 5 5 5 5 5 5 5
SURFACE WND GST.10 10 10 10 10 10 10 10 10 10 10 15
FORECASTER...GREELY
REQUESTED BY...AUTUMN ASHDALE
TYPE OF REQUEST...HAZMAT
.TAG 2603337.0/TFX
.DELDT 02/20/26
.FORMATTERVERSION 2.0.0
.EMAIL AASHDALE@LCCOUNTYMT.GOV, TFX.OPS@NOAA.GOV
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