Thunderstorm Wind, Prairie
- When
- July 12, 11:44 PM MST
- Where
- Prairie County, 28 mi NW of Terry
- Measured
- 55 kt (63 mph)
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 47.067, -105.717
Damaging Wind in Montana, July 12, 2001
1 thunderstorm wind, as filed by the National Weather Service.
Where it happened
Every event with a place to put it. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
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.
What forecasters said that day
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 Glasgow, MT wrote its last area forecast discussion before the first event at Jul 12, 7:45 PM MST, 3 hours 59 minutes earlier.
Area forecast discussion, Jul 12, 7:45 PM MST, 3 hours 59 minutes before
NORTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
845 PM MDT THU JUL 12 2001
...SEVERE THUNDERSTORM WATCH UNTIL MIDNIGHT FOR ALL CWA EXCEPT
EXTREME NORTHEASTERN COUNTIES...
...UPDATED TO BETTER DEFINE SEVERE WEATHER THREAT...
SEVERE THUNDERSTORMS FORMING MAINLY ALONG A MOIST AXIS STRETCHING
N-S THROUGH OUR WRN COUNTIES THEN EAST ACROSS CENTRAL MT. HAVE HAD
NUMEROUS REPORTS OF HAIL UP TO GOLFBALL SIZE...FLASH FLOODING...HAIL
PILING UP TO DEPTHS OF 4 FEET...FUNNEL CLOUDS...THE WORKS. WORST
SEEMS TO BE YET TO COME. SQUALL LINE(S) NOW APPROACHING WRN ZONES AS
UPR DYNAMICS MOVE INTO CWA. THE FAR NERN ZONES WILL PROBABLY BE
SPARED FROM THE SEVERE WX AS THERE IS COOLER AIR IN PLACE THERE AND
MAIN DYNAMICS WILL WEAKEN AND DIVE SE AS IT MOVES THROUGH ERN
MONTANA. ZONES BROAD-BRUSHED AND HAVE SITUATION COVERED. WILL BE
UPDATING ZONES WHEN THERE IS ANY CHANGE IN WATCH STATUS. WRIGHT
EXTENDED...MODELS SUGGEST AN OMEGA BLOCK DEVELOPING OVER NORTH
AMERICA DURING THE EXTENDED PERIOD. THE UPPER LEVEL RIDGE IS
FORECAST TO REMAIN EAST OF MONTANA WITH A DEEP TROUGH ALONG THE WEST
COAST AND AN UPPER LOW OVER SOUTHWEST CANADA. THIS PATTERN KEEPS
NORTHEAST MONTANA IN SOUTHWEST FLOW ALOFT FOR THE ENTIRE PERIOD.
WILL CONTINUE WITH CHANCE POPS EACH DAY WITH TEMPERATURES REMAINING
NEAR NORMAL. WATERHOUSE
KGGW 064/088 062/088 062/088 061/087 060/086 060/086 059/085
TTTTTTT 943232/9933333
KGDV 064/090 064/092 063/090 062/089 061/088 060/087 059/086
TTTTTTT 943232/9933333In the hours before
Local storm report, Jul 12, 9:44 PM MST, 2 hours before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
1044 PM MDT THU JUL 12 2001
TIME(MDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0729 PM 15 N SACO MT 1.00 INCH HAIL
07/12/01 PHILLIPS QUARTER SIZE HAIL AND 1/4
INCH OF RAIN IN 15 MINS
0736 PM 4 N ROCK SPRINGS MT 1.00 INCH HAIL
07/12/01 GARFIELD HAILED FOR 5 MINS. 40-50
MPH WIND GUSTS.
0738 PM ROCK SPRINGS MT .75 INCH HAIL
07/12/01 GARFIELD
0530 PM 7 S BRUSSETT MT FLASH FLOODS
07/12/01 GARFIELD WATER OVER ROADWAY
0530 PM 7 S BRUSSETT MT WIND DAMAGE
07/12/01 GARFIELD FENCES BLOWN DOWN
0530 PM 7 S BRUSSETT MT 2.00 INCH HAIL
07/12/01 GARFIELD 1-FOOT DRIFTS OF HAIL WITH
4-5 INCHES OF RAIN
0806 PM 2 N BJORNBORG MT 1.50 INCH HAIL
07/12/01 VALLEY
0819 PM 10 NE SACO MT 1.50 INCH HAIL
07/12/01 PHILLIPS
0908 PM BJORBERG MT 1.50 INCH HAIL
07/12/01 VALLEY CROPS DAMAGED.
1000 PM S HWY 191 MALTA MT FLASH FLOODS
07/12/01 PHILLIPS WATER IN COULEES UP TO 10
FEET ACROSS IN PLACES.
0905 PM BJORBORG BRIDGE MT 1.75 INCH HAIL
07/12/01 VALLEY CROPS COMPLETELY HAILED
OUT
0845 PM FRENCHMAN DAM MT FLASH FLOODS
07/12/01 PHILLIPS FRENCHMAN RESEVOIR FULL.
WATER BEING RELEASED FROM
DAM. WATER OVER ROADWAYS.
0805 PM FRENCHMAN DAM MT 1.50 INCH HAIL
07/12/01 PHILLIPS HAIL 3 FEET DEEP
0930 PM ZORTMAN MT .75 INCH HAIL
07/12/01 PHILLIPS
WRIGHTSpecial weather statement, Jul 12, 11:07 PM MST, 37 minutes before
MTZ016-017-021>023-025>027-059>061-130706- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GLASGOW MT 1207 AM MDT FRI JUL 13 2001 ...SEVERE THUNDERSTORM WATCH NUMBER 548 AS EXPIRED IN NORTHEAST MONTANA... THE NATIONAL WEATHER SERVICE HAS CANCELLED THE FOLLOWING AREAS IN SEVERE THUDERSTORM WATCH NUMBER 548. NO AREAS REMAIN IN THE WATCH. IN NORTHEAST MONTANA: DAWSON GARFIELD MCCONE PHILLIPS PETROLEUM PRAIRIE VALLEY WIBAUX TLSJR
The radar
The national radar mosaic for the moment the first event began.
Event by event
1 thunderstorm wind. Local standard time, as filed.
What these are
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Flash Flood in Washington, July 12, 2001
- Heat in Mississippi, July 12, 2001
- Heat in Texas, July 12, 2001
- Flash Flood and Hail in Montana, July 12 to 13, 2001
- Wildfire in California, July 12, 2001
- Flash Flooding and Hail in Montana, July 12, 2001
- Hail and Damaging Winds in Mississippi, July 12, 2001
- Damaging Winds in Louisiana, July 12, 2001
- Hail and Damaging Winds in Oklahoma, July 12, 2001
- Lightning Strike in Colorado, July 12, 2001
- Hail and Damaging Winds in Kansas, July 12, 2001
- Damaging Wind in Missouri, July 12, 2001
More
Every storm in Montana in 2001Every state in 2001This day in weather historyWarnings in Montana, July 2001
Sources
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: 5261612.