846
FXUS65 KTFX 200712
AFDTFX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREAT FALLS MT
1212 AM MST FRI FEB 20 2026
KEY MESSAGES
- MUCH WARMER TEMPERATURES EXPECTED TODAY, ALTHOUGH MOST
LOCATIONS WILL STAY BELOW FREEZING THROUGH THE AFTERNOON.
- LIGHT SNOW SHOWERS ARE EXPECTED ALONG THE MOUNTAINS THROUGH
TONIGHT.
- TEMPERATURES MODERATE OVER THE WEEKEND, WITH ALL LOCATIONS
WARMING TO WELL ABOVE NORMAL BY EARLY NEXT WEEK.
DISCUSSION
- METEOROLOGICAL OVERVIEW:
LIGHT MOUNTAIN SNOW SHOWERS WILL DEVELOP ACROSS THE REGION ON
FRIDAY WITH GENERALLY MINIMAL ACCUMULATIONS EXPECTED THROUGH AT
PASS LEVEL. TEMPERATURES WILL CONTINUE TO WARM WITH HIGHS IN THE
20S AND 30S EXPECTED ACROSS THE REGION AT LOWER ELEVATIONS THIS
AFTERNOON.
CONTINUED MODERATION IN TEMPERATURES WILL OCCUR OVER THE WEEKEND AND
THE UPPER LEVEL RIDGE AMPLIFIES OVER THE NORTHERN ROCKIES, WITH THE
STUBBORN COLD PRONE VALLEYS OF NORTH CENTRAL AND CENTRAL MONTANA
BEING THE SLOWEST TO MODERATE INITIALLY. BY EARLY NEXT WEEK
INCREASING SOUTHWESTERLY FLOW AND SUBSEQUENT DOWNSLOPING WILL LEAD
TO FURTHER WARMING, WITH ALL LOCATION WARMING WELL ABOVE NORMAL.
WHILE THIS SOUTHWESTERLY FLOW WILL USHER IN WARMER TEMPERATURES IT
WILL ALSO SUPPORT DAILY CHANCES FOR PRECIPITATION, ESPECIALLY OVER
THE MOUNTAINS. -MOLDAN/THOR
- FORECAST CONFIDENCE & SCENARIOS:
COLD TONIGHT:
LOCALLY ENHANCED WINDS IN EASTERN GLACIER, TOOLE, AND LIBERTY
COUNTIES HAVE LED TO WIND CHILLS IN EXCESS OF 25 BELOW. AS SUCH, A
COLD WEATHER ADVISORY WAS ISSUED THROUGH 9 AM TO ACCOUNT FOR WHEN
THESE WINDS ARE EXPECTED TO LET UP IN COMBINATION WITH WARMING
TEMPERATURES.
OTHERWISE, TONIGHT IS EXPECTED TO BE THE LAST BITTERLY COLD NIGHT
FOR NORTH-CENTRAL MONTANA. GOING FORWARD TEMPERATURES SLOWLY CLIMB
BACK UP WITH THE MOST SIGNIFICANT WARM-UP EXPECTED ON MONDAY.
SNOW TODAY:
LIGHT MOUNTAIN SNOW IS EXPECTED THROUGHOUT THE DAY TODAY WITH A 10-
20% CHANCE OF SOME LIGHT FLURRIES AT LOWER ELEVATIONS.
GENERALLY SPEAKING, SNOWFALL ACCUMULATIONS ARE EXPECTED TO BE LESS
THAN AN INCH WITH A 20-30% CHANCE FOR GREATER THAN 2 INCHES ALONG
THE MOUNTAIN PEAKS.
WARM AND WINDY CONDITIONS RETURN NEXT WEEK:
ENSEMBLE CLUSTER GUIDANCE IS IN VERY GOOD AGREEMENT ABOUT A STRONG
UPPER-LEVEL RIDGE BUILDING OVER THE WESTERN CONUS THROUGH THE
START OF NEXT WEEK.
ALTHOUGH THE TEMPERATURE SWING FOR MONDAY'S HIGHS WILL BE A BIT
DRAMATIC, IT IS WELL SUPPORTED IN THE MODELS WITH NBM
PROBABILITIES SITTING AT 90% FOR HIGHS GREATER THAN 50 ACROSS THE
LOWER ELEVATIONS. ADDITIONALLY, THERE IS A 50% CHANCE FOR HIGHS ON
MONDAY TO EXCEED 60 DEGREES FOR PORTIONS OF THE NORTHERN PLAINS
INCLUDING GREAT FALLS.
WITH THE WARMTH COMES THE WIND. WHILE MONDAY AND TUESDAY MAY BE
BREEZY, THERE ARE GROWING SIGNS IN THE MODELS THAT WEDNESDAY
THROUGH AT LEAST THURSDAY COULD SEE EVEN STRONGER WINDS ACROSS
MUCH OF THE REGION. HOW STRONG THE WINDS GET IS STILL YET TO BE
DECIDED BUT NEXT WEEK IS LOOKING TO ERR ON THE SIDE OF WARM AND
WINDY. -THOR
AVIATION
20/06Z TAF PERIOD
A WEAK UPPER LEVEL WEATHER DISTURBANCE SHIFTING EAST ACROSS MT
WILL BRING AN INCREASE IN MID LEVEL CLOUD-COVER AND SOME MOUNTAIN
OBSCURATION BY FRIDAY MORNING. SCATTERED LIGHT SNOW
SHOWERS/FLURRIES WILL TRACK EAST ACROSS PRIMARILY CENTRAL AND
SOUTHWEST MT FRIDAY AFTERNOON WITH MAINLY LOW-VFR CEILINGS
EXPECTED AT TERMINALS BUT SOME BRIEF MVFR VISIBILITY MAY ALSO BE
ASSOCIATED. SURFACE WINDS REMAIN RELATIVELY LIGHT WITH SOME
INCREASE IN WEST TO NORTHWEST WINDS FOR A PERIOD FRIDAY AFTERNOON.
HOENISCH
PRELIMINARY POINT TEMPS/POPS
GTF 3 -7 27 5 / 10 0 20 10
CTB 4 -11 21 -2 / 0 10 20 10
HLN 19 1 30 8 / 10 0 20 10
BZN 22 -2 30 7 / 10 10 10 10
WYS 22 -17 22 -1 / 40 20 30 20
DLN 20 2 31 4 / 10 10 10 10
HVR 5 -13 16 -6 / 30 0 20 10
LWT 6 -5 29 4 / 20 10 30 30
TFX WATCHES/WARNINGS/ADVISORIES
COLD WEATHER ADVISORY UNTIL 9 AM MST FRIDAY FOR EASTERN GLACIER,
WESTERN TOOLE, AND CENTRAL PONDERA-EASTERN TOOLE AND LIBERTY.
HTTP://WWW.WEATHER.GOV/GREATFALLS
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