Avalanche, Gallatin
- When
- February 19, 4:00 PM MST
- Where
- Gallatin forecast zone
- Injuries
- 1 direct, 0 indirect
- Reported by
- PARK/FOREST SERVICE
Avalanche injury reported near West Yellowstone (time of injury report estimated).
1 avalanche, as filed by the National Weather Service.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Great Falls, MT wrote its last area forecast discussion before the first event at Feb 19, 3:00 PM MST, 1 hour earlier.
SOUTHWEST AND NORTH CENTRAL MONTANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 300 PM MST MON FEB 19 2001 .TUE AND WED... SOUTHWARD PROGRESS OF SHALLOW COLD AIR MASS HAS BEEN STYMIED BY THE MOUNTAINS SOUTH OF GTF. WOULD NOT EXPECT THIS TO CHANGE OVERNIGHT. LOW CLOUDS ASSOCIATED WITH THE AIR MASS EXPECTED TO PERSIST AS WELL...EXCEPT OVER NE ZONES. WEAK NEGATIVE TILT UPPER RIDGE LURKING WEST OF MONTANA...WILL PROPAGATE NORTHEAST INTO THE CWA BY TUESDAY NIGHT. UPPER LOW NEAR 40N 130W TO DISSIPATE RAPIDLY OVER NEXT 36 HOURS...AND HENCE THE RIDGE WEAKENS AS WELL. AVN HAS A SMALL BUT VIGOROUS SHORTWAVE MOVING THROUGH SOUTHERN IDAHO AND INTO NORTHERN WYOMING TUESDAY NIGHT INTO WEDNESDAY. ETA NOT AS IMPRESSIVE WITH FEATURE...ALTHOUGH MESO-ETA DOES PICK UP ON IT. WHETHER FEATURE DEVELOPS OR NOT...MOIST WESTERLY FLOW SURE TO GIVE SOUTHWEST MOUNTAINS MORE SNOW...WITH SCATTERED LIGHT SNOW FOR THE EXTREME SOUTHWEST VALLEYS. FAIRLY STRONG SW WINDS DEVELOPING ALONG THE EAST SLOPES BY NOON ON WEDNESDAY...FOR GOOD WARMING NORTHERN HALF OF CWA. ANOTHER PUSH FROM THE NORTH ON THE WAY LATE IN THE DAY KEEPS TEMPERATURES DOWN IN THE NORTHEAST ZONES. POMEROY .THU...FRI...SAT...SUN...MON... EXTENDED DISCUSSION...MRF SHOWING SOME RUN TO RUN DISCREPANCIES WITH DEVELOPMENT OF CUT OFF LOW OFF CA COAST. PREVIOUS RUN SHOWED STRONGER LOW IN SOUTHERN BRANCH WITH RELATIVELY WEAK NORTHERN BRANCH. LATEST RUN HAS WEAKENED CUT OFF LOW SLIGHTLY AND PUT MORE ENERGY IN NORTHERN BRANCH WHICH IS THEN STEERED ACROSS MT...ESPECIALLY SAT...SUN AND MON. COMPARING MRF TO ECMWF AND UKMET...THERE ARE SOME SLIGHT TIMING DIFFERENCES MOVING DISTURBANCES THROUGH CWA...HOWEVER OTHER MODELS ALSO SHOWING STRONGER ENERGY IN NORTHERN BRANCH. THUS...WILL MENTION ISOLATED POPS AND GENERALLY MILD TEMPS EARLY IN PERIOD INCREASING TO CHANCE POPS WITH SLIGHT COOLING OVER WEEKEND. CCF NUMBERS GTF BB 009/026 015/041 024 191000 CTB BB 004/026 015/038 022 191000 HLN UB 010/028 012/034 015 190011 BZN BE 010/032 013/035 015 190232 WEY EJ 006/030 012/030 012 191365 DLN BE 017/035 020/035 017 190233 HVR UB 901/020 002/029 008 191001 LWT BB 004/025 013/037 019 191001
1 avalanche. Local standard time, as filed.
Avalanche injury reported near West Yellowstone (time of injury report estimated).
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2001Every state in 2001This day in weather historyWarnings in Montana, February 2001
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5231998.