A strong westerly flow aloft mixed down to the surface and produced high winds across a wide portion of North Central Montana. Wind gusts in excess of 70 mph were reported.
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 episode as NWS TFX wrote it up.
A strong westerly flow aloft mixed down to the surface and produced high winds across a wide portion of North Central Montana. Wind gusts in excess of 70 mph were reported.
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 10, 5:05 PM MST, 2 hours 16 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 505 PM MST THU FEB 10 2011 UPDATED AVIATION SECTION .DISCUSSION... TONIGHT THROUGH SATURDAY...THE MAIN INTEREST TODAY IS THE WIND...STRONG SURFACE FLOW ACROSS THE ROCKIES AND PLAINS WILL CONTINUE INTO THE WEEKEND. AN UPPER LEVEL HIGH PRESSURE RIDGE IS IN PLACE OFF THE WEST COAST AND THE ZONES REMAIN UNDERNEATH STRONG NORTHWEST FLOW ALOFT. THESE WINDS WILL INCREASE FRIDAY AS A STRONG JET APPROACHES. AT THE SURFACE...A TIGHT SURFACE GRADIENT LIES ALONG THE LEE OF THE ROCKIES. AN UPPER LEVEL JET WILL APPROACH THE NORTHERN ROCKIES BY FRIDAY AFTERNOON WITH THE STRONGEST WINDS OVER THE ZONES BY SATURDAY...AND SHOULD BE ENHANCED AS A SERIES OF DISTURBANCES MOVES THROUGH THE FLOW ALOFT. THE RIDGE WILL MOVE OVER THE ROCKIES FRIDAY NIGHT AND THEN BECOMES FLATTENED BY SATURDAY MORNING AS A LOW PRESSURE TROF OVER THE EASTERN PACIFIC APPROACHES THE WEST COAST. WINDS WILL STRENGTHEN OVER THE ROCKIES FRIDAY NIGHT AND BECOME VERY STRONG AND GUSTY BY SATURDAY. THE AIRMASS...UNDERNEATH THE INFLUENCE OF THE HIGH PRESSURE...WILL GENERALLY REMAIN DRY ALTHOUGH SNOW SHOWERS WILL BE LIKELY OVER THE NORTHERN ROCKIES THROUGH THE PERIOD. TEMPS WILL RISE WILL ABOVE NORMALS OVER NORTH CENTRAL MONTANA BY SATURDAY. SOUTHWEST MONTANA WILL TREND UPWARDS AS WELL AND RISE TO NEAR NORMALS BY SATURDAY. ZELZER SATURDAY NIGHT THROUGH THURSDAY...MODELS ARE IN FAIRLY GOOD AGREEMENT ON EXPECTED FLOW ALOFT UNTIL MIDWEEK THEN DIFFERENCES AMONGST THE MODELS INCREASE WEDNESDAY NIGHT INTO THURSDAY. STRONG NORTHWEST FLOW ALOFT IS EXPECTED SATURDAY NIGHT THROUGH SUNDAY NIGHT. ON MONDAY A BROAD UPPER RIDGE WILL MOVE THROUGH THE AREA WITH SOUTHWEST FLOW EXPECTED THEREAFTER. THIS FLOW ALOFT COULD BE STRONG AT TIMES INTO TUESDAY NIGHT. WEDNESDAY NIGHT AND THURSDAY EXPECT A WEATHER DISTURBANCE OR TWO TO AFFECT THE AREA. THE GFS AND GEM MODELS ARE FASTER AND WEAKER WITH THE WEATHER DISTURBANCES THAN THE ECMWF WHICH DEVELOPS AN UPPER LOW OVER EASTERN MONTANA ON THURSDAY. SATURDAY NIGHT THROUGH TUESDAY EXPECT PRECIPITATION TO BE CONFINED TO THE MOUNTAINS. TUESDAY NIGHT AND WEDNESDAY EXPECT THAT MOISTURE WILL HAVE INCREASED ENOUGH FOR A THREAT OF PRECIPITATION OVER THE PLAINS AND VALLEYS. BEYOND WEDNESDAY AM NOT READY TO BUY INTO THE THE ECMWF SOLUTION WHICH HAS WIDESPREAD PRECIPITATION FOR THE AREA. FOR NOW WILL CONTINUE WITH THE IDEA OF A CHANCE OF PRECIPITATION OVER THE MOUNTAINS WITH A SLIGHT CHANCE OF PRECIPITATION FOR THE PLAINS AND VALLEYS. EXPECT TEMPERATURES TO CONTINUE ABOVE NORMAL INTO EARLY NEXT WEEK THEN FALL TO NEAR SEASONAL NORMALS THEREAFTER. EXPECT HIGH WINDS OVER THE ROCKY MOUNTAIN FRONT THROUGH THE WEEKEND AND THEY COULD POSSIBLY CONTINUE THROUGH TUESDAY NIGHT. BLANK && .AVIATION... UPDATED 0005Z. GENERALLY DRY NORTHWEST FLOW ALOFT WILL CONTINUE TO BRING MID AND HIGH CLOUDS ACROSS THE AREA. PRECIPITATION WILL BE CONFINED TO THE WESTERN MOUNTAINS. STRONG WINDS ALOFT WILL PERSIST AS WILL GUSTY SURFACE WINDS. SURFACE WINDS WILL BE STRONGEST ALONG THE ROCKY MOUNTAIN FRONT AND OVER THE ADJACENT PLAINS. VFR CONDITIONS PREVAIL. && .HYDROLOGY... TEMPERATURES WILL CONTINUE TO WARM TO WELL ABOVE NORMAL THROUGH THIS WEEKEND AND INTO EARLY NEXT WEEK. DURING THIS TIME...MELTING OF BOTH SNOW AND RIVER ICE WILL CAUSE RIVER AND STREAM LEVELS TO RISE. ICE BREAKUP MAY ALSO GET JAMMED UNDER BRIDGES DOWNSTREAM...WHICH MAY ALSO CAUSE RIVER LEVELS UPSTREAM TO RISE. ALTHOUGH OVERNIGHT TEMPERATURES ARE GENERALLY EXPECTED TO FALL BACK BELOW FREEZING...WHICH WILL LIKELY LIMIT THE IMPACT OF THESE SCENARIOS...THIS SITUATION WILL CONTINUE TO BE MONITORED FOR POSSIBLE HYDROLOGIC HIGHLIGHTS. && .PRELIMINARY POINT TEMPS/POPS... GTF 27 43 37 48 / 10 0 0 10 CTB 27 42 34 45 / 10 0 0 10 HLN 20 41 27 47 / 10 10 0 10 BZN 13 36 21 44 / 20 10 10 10 WEY 2 21 14 26 / 20 20 20 20 DLN 16 36 22 42 / 10 10 0 10 HVR 23 39 34 43 / 10 10 10 10 LWT 22 38 33 44 / 10 0 0 10 && .TFX WATCHES/WARNINGS/ADVISORIES... HIGH WIND WARNING FROM 11 AM FRIDAY TO 11 AM MST SUNDAY CASCADE...CENTRAL AND SOUTHERN LEWIS AND CLARK...EASTERN GLACIER...EASTERN PONDERA...EASTERN TETON...TOOLE. HIGH WIND WARNING UNTIL 11 PM MST SUNDAY NORTHERN ROCKY MOUNTAIN FRONT...SOUTHERN ROCKY MOUNTAIN FRONT. HIGH WIND WARNING UNTIL 10 PM MST THIS EVENING GALLATIN. HIGH WIND WATCH FROM FRIDAY AFTERNOON THROUGH SUNDAY MORNING CHOUTEAU...JUDITH BASIN...LIBERTY. && WEATHER.GOV/GREATFALLS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREAT FALLS MT 335 PM MST THU FEB 10 2011 MTZ009-014-048-112245- NORTHERN ROCKY MOUNTAIN FRONT- CENTRAL AND SOUTHERN LEWIS AND CLARK- SOUTHERN ROCKY MOUNTAIN FRONT- 335 PM MST THU FEB 10 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL MONTANA AND SOUTHWEST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT A HIGH WIND WARNING IS IN EFFECT FOR THE ROCKY MOUNTAIN FRONT THROUGH SUNDAY NIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THE HIGH WIND WARNING WILL CONTINUE THROUGH SUNDAY NIGHT. STRONG GUSTY WINDS WILL LIKELY CONTINUE ACROSS THE ROCKY MOUNTAIN FRONT THROUGH TUESDAY. TEMPERATURES WILL CONTINUE TO WARM TO WELL ABOVE NORMAL THROUGH THIS WEEKEND AND INTO NEXT WEEK. DURING THIS TIME...MELTING OF BOTH SNOW AND RIVER ICE WILL CAUSE RIVER AND STREAM LEVELS TO RISE. ICE BREAKUP MAY ALSO CAUSES JAMS AT BRIDGES OR OTHER STRUCTURES IN THE STREAMS...WHICH MAY ALSO CAUSE UPSTREAM RIVER LEVELS TO RISE. OVERNIGHT TEMPERATURES ARE GENERALLY EXPECTED TO REMAIN ABOVE FREEZING AT LOWER ELEVATIONS THROUGH MID-WEEK...THIS SITUATION WILL BE MONITORED FOR POSSIBLE HYDROLOGIC HIGHLIGHTS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ010-012-044-046-049-112245- EASTERN GLACIER-CASCADE-TOOLE-EASTERN PONDERA-EASTERN TETON- 335 PM MST THU FEB 10 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA AND NORTH CENTRAL MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A LOW PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A HIGH WIND WARNING IS IN EFFECT FROM 11 AM FRIDAY THROUGH SUNDAY MORNING. STRONG GUSTY WINDS WILL DEVELOP FRIDAY AND CONTINUE THROUGH SUNDAY MORNING. TEMPERATURES WILL CONTINUE TO WARM TO WELL ABOVE NORMAL THROUGH THIS WEEKEND AND INTO NEXT WEEK. DURING THIS TIME...MELTING OF BOTH SNOW AND RIVER ICE WILL CAUSE RIVER AND STREAM LEVELS TO RISE. ICE BREAKUP MAY ALSO CAUSES JAMS AT BRIDGES OR OTHER STRUCTURES IN THE STREAMS...WHICH MAY ALSO CAUSE UPSTREAM RIVER LEVELS TO RISE. OVERNIGHT TEMPERATURES ARE GENERALLY EXPECTED TO REMAIN ABOVE FREEZING AT LOWER ELEVATIONS THROUGH MID-WEEK...THIS SITUATION WILL BE MONITORED FOR POSSIBLE HYDROLOGIC HIGHLIGHTS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ055-112245- GALLATIN- 335 PM MST THU FEB 10 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT A HIGH WIND WARNING IS IN EFFECT UNTIL 10 PM MST FOR THE BOZEMAN PASS AREA...BATTLE RIDGE PASS AREA...AND THE BRIDGER MOUNTAINS IN THE NORTHEAST PORTION OF GALLATIN COUNTY. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY TEMPERATURES WILL CONTINUE TO WARM TO WELL ABOVE NORMAL THROUGH THIS WEEKEND AND INTO NEXT WEEK. DURING THIS TIME...MELTING OF BOTH SNOW AND RIVER ICE WILL CAUSE RIVER AND STREAM LEVELS TO RISE. ICE BREAKUP MAY ALSO CAUSES JAMS AT BRIDGES OR OTHER STRUCTURES IN THE STREAMS...WHICH MAY ALSO CAUSE UPSTREAM RIVER LEVELS TO RISE. OVERNIGHT TEMPERATURES ARE GENERALLY EXPECTED TO REMAIN ABOVE FREEZING AT LOWER ELEVATIONS THROUGH MID-WEEK...THIS SITUATION WILL BE MONITORED FOR POSSIBLE HYDROLOGIC HIGHLIGHTS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ008-015-052>054-112245- BEAVERHEAD-MADISON-JEFFERSON-BROADWATER-MEAGHER- 335 PM MST THU FEB 10 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT THE PROBABILITY IS LOW FOR WIDESPREAD HAZARDOUS WEATHER. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY TEMPERATURES WILL CONTINUE TO WARM TO WELL ABOVE NORMAL THROUGH THIS WEEKEND AND INTO NEXT WEEK. DURING THIS TIME...MELTING OF BOTH SNOW AND RIVER ICE WILL CAUSE RIVER AND STREAM LEVELS TO RISE. ICE BREAKUP MAY ALSO CAUSES JAMS AT BRIDGES OR OTHER STRUCTURES IN THE STREAMS...WHICH MAY ALSO CAUSE UPSTREAM RIVER LEVELS TO RISE. OVERNIGHT TEMPERATURES ARE GENERALLY EXPECTED TO REMAIN ABOVE FREEZING AT LOWER ELEVATIONS THROUGH MID-WEEK...THIS SITUATION WILL BE MONITORED FOR POSSIBLE HYDROLOGIC HIGHLIGHTS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ013-045-050-112245- CHOUTEAU-LIBERTY-JUDITH BASIN- 335 PM MST THU FEB 10 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA AND NORTH CENTRAL MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT THE PROBABILITY IS LOW FOR WIDESPREAD HAZARDOUS WEATHER. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A HIGH WIND WATCH IS IN EFFECT FROM FRIDAY AFTERNOON THROUGH SUNDAY MORNING. STRONG AND GUSTY WINDS WILL INCREASE ON FRIDAY AFTERNOON AND CONTINUE THROUGH SUNDAY MORNING. TEMPERATURES WILL CONTINUE TO WARM TO WELL ABOVE NORMAL THROUGH THIS WEEKEND AND INTO NEXT WEEK. DURING THIS TIME...MELTING OF BOTH SNOW AND RIVER ICE WILL CAUSE RIVER AND STREAM LEVELS TO RISE. ICE BREAKUP MAY ALSO CAUSES JAMS AT BRIDGES OR OTHER STRUCTURES IN THE STREAMS...WHICH MAY ALSO CAUSE UPSTREAM RIVER LEVELS TO RISE. OVERNIGHT TEMPERATURES ARE GENERALLY EXPECTED TO REMAIN ABOVE FREEZING AT LOWER ELEVATIONS THROUGH MID-WEEK...THIS SITUATION WILL BE MONITORED FOR POSSIBLE HYDROLOGIC HIGHLIGHTS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ011-047-051-112245- HILL-BLAINE-FERGUS- 335 PM MST THU FEB 10 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA AND NORTH CENTRAL MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT THE PROBABILITY IS LOW FOR WIDESPREAD HAZARDOUS WEATHER. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY WINDS WILL INCREASE AND BECOME GUSTY FRIDAY AFTERNOON THROUGH SUNDAY MORNING. THIS SITUATION WILL BE MONITORED FOR POSSIBLE WIND HIGHLIGHTS. TEMPERATURES WILL CONTINUE TO WARM TO WELL ABOVE NORMAL THROUGH THIS WEEKEND AND INTO NEXT WEEK. DURING THIS TIME...MELTING OF BOTH SNOW AND RIVER ICE WILL CAUSE RIVER AND STREAM LEVELS TO RISE. ICE BREAKUP MAY ALSO CAUSES JAMS AT BRIDGES OR OTHER STRUCTURES IN THE STREAMS...WHICH MAY ALSO CAUSE UPSTREAM RIVER LEVELS TO RISE. OVERNIGHT TEMPERATURES ARE GENERALLY EXPECTED TO REMAIN ABOVE FREEZING AT LOWER ELEVATIONS THROUGH MID-WEEK...THIS SITUATION WILL BE MONITORED FOR POSSIBLE HYDROLOGIC HIGHLIGHTS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
231 PM MST THU FEB 10 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0150 PM HIGH SUST WINDS 12 E BOZEMAN 45.67N 110.80W
02/10/2011 M47 MPH GALLATIN MT DEPT OF HIGHWAYS
SUSTAINED WINDS OF 40 TO 47 MPH AT BOZEMAN PASS FROM
1241 PM MST UNTIL 151 PM MST. PEAK SUSTAINED WIND OF 47
MPH OCCURRED AT 1 PM MST. PEAK WIND GUST OF 54 MPH
OCCURRED AT 1241 PM MST.
&&
COULSTONPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
240 PM MST THU FEB 10 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0821 AM HIGH SUST WINDS 8 SE EAST GLACIER PARK 48.37N 113.10W
02/10/2011 M45 MPH GLACIER MT MESONET
SUSTAINED WINDS OF 40 TO 45 MPH FROM 421 AM MST UNTIL
821 AM MST AT THE DEEP CREEK RAWS SITE. PEAK SUSTAINED
WIND OF 45 MPH OCCURRED AT 621 AM MST.
&&
COULSTONPRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GREAT FALLS MT
245 PM MST THU FEB 10 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0821 AM HIGH SUST WINDS 8 SE EAST GLACIER PARK 48.37N 113.10W
02/09/2011 M45 MPH GLACIER MT MESONET
SUSTAINED WINDS OF 40 TO 45 MPH FROM 421 AM MST UNTIL
821 AM MST AT THE DEEP CREEK RAWS SITE. PEAK SUSTAINED
WIND OF 45 MPH OCCURRED AT 621 AM MST.
&&
CORRECTED EVENT DATE...EVENT
COULSTONPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
250 PM MST THU FEB 10 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0821 AM NON-TSTM WND GST 8 SE EAST GLACIER PARK 48.37N 113.10W
02/09/2011 M66 MPH GLACIER MT MESONET
WIND GUSTS OF 59 TO 69 MPH OCCURRED AT THE DEEP CREEK
RAWS SITE FROM 421 AM MST UNTIL 821 AM MST. PEAK WIND
GUST OF 69 MPH OCCURRED AT 721 AM MST.
&&
COULSTONPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
255 PM MST THU FEB 10 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0621 PM NON-TSTM WND GST 8 SE EAST GLACIER PARK 48.37N 113.10W
02/09/2011 M65 MPH GLACIER MT MESONET
WIND GUSTS OF 59 TO 65 MPH OCCURRED AT THE DEEP CREEK
RAWS SITE FROM 221 PM MST UNTIL 621 PM MST. PEAK WIND
GUST OF 65 MPH OCCURRED AT 621 PM MST.
&&
COULSTONPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
258 PM MST THU FEB 10 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0621 PM HIGH SUST WINDS 8 SE EAST GLACIER PARK 48.37N 113.10W
02/09/2011 M44 MPH GLACIER MT MESONET
SUSTAINED WINDS OF 43 TO 44 MPH OCCURRED AT THE DEEP
CREEK RAWS SITE FROM 321 PM UNTIL 621 PM MST.
&&
COULSTON13 high wind. Local standard time, as filed.
A wind gust to 60 mph was reported at East Glacier Park 8SE (the Deep Creek RAWS site - elevation 5341 feet).
A wind gust to 80 mph was reported northwest of Heart Butte.
A wind gust to 62 mph was reported at Stanford 3S.
A wind gust to 69 mph was reported at the Cut Bank ASOS site.
A wind gust to 72 mph was reported at Choteau.
A wind gust to 58 mph was reported at Wolf Creek 15WNW (the Rogers Pass DOT site).
A wind gust to 66 mph was reported at Cascade.
Wind gusts to 60 mph were reported at Conrad 5S. A horse trailer and a semi tractor-trailer overturned on Interstate 15, south of Conrad.
A wind gust to 58 mph was reported at McAllister 4NNE (the Norris Hill DOT site).
A wind gust to 58 mph was reported at Dunkirk 7NE (the Crooked Coulee MSCN site).
Sustained wind speeds of 44 mph were reported for an hour at the Havre ASOS site.
A wind gust to 58 mph was reported at the Lewistown ASOS site.
A wind gust to 60 mph was reported at Fort Belknap 13S (the Fort Belknap RAWS site).
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2011Every state in 2011This day in weather historyWarnings in Montana, February 2011
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: 282045, 282066, 282068, 282049, 282067, 282057, 282053, 282063, 282059, 282062, 282051, 282070, 282064.