Thunderstorm Wind, Phillips
- When
- July 25, 6:35 PM MST
- Where
- Phillips County, 2 mi ESE of Sun Prairie
- Measured
- 52 kt (60 mph) estimated gust
- Reported by
- Public
- Coordinates
- 47.869, -107.630
Public estimated a 60 mph wind gust.
Hail and Damaging Winds in Montana, July 25, 2011
Enhanced lift ahead of a well-define low pressure trough, strong shear, and a strengthening low-level wind maximum combined to produce severe thunderstorms.
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
- 7
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 happened
The episode as NWS GGW wrote it up.
Enhanced lift ahead of a well-define low pressure trough, strong shear, and a strengthening low-level wind maximum combined to produce severe thunderstorms.
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 25, 4:52 PM MST, 1 hour 43 minutes earlier.
Area forecast discussion, Jul 25, 4:52 PM MST, 1 hour 43 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GLASGOW MT 552 PM MDT MON JUL 25 2011 .SHORT TERM...FOR NORTHEAST MONTANA...TONIGHT THROUGH WEDNESDAY... UPDATE...UPDATED THE GOING FORECAST TO INCLUDE SEVERE THUNDERSTORM WATCH NUMBER 685 WHICH IS IN EFFECT UNTIL 1 AM. PREVIOUS DISCUSSION...THIS AFTERNOON... WARM FRONT IS CURRENTLY STRUNG OUT FROM HAVRE TO ZORTMAN AND OVER TO CIRCLE THROUGH GLENDIVE. THIS IS EXPECTED TO ADVANCE NORTH INTO THE NORTHEASTERN SECTION OF THE GGW CWA THROUGH THE EVENING. DEWPOINTS TO THE SOUTH OF THE WARM FRONT ARE QUICKLY CLIMBING INTO THE 60S AND HAVE WILL BEGUN TO OVERRUN THE FRONT SPARKING OFF A FEW LIGHT RAIN SHOWERS ON THE NORTHERN SIDE. A SHORTWAVE ARRIVING IN THE SOUTHWEST FLOW ALOFT SHOULD PROVIDE PLENTY OF UPPER LEVEL LIFT AND SUPPORT FOR STORMS TO BECOME SEVERE THIS EVENING. ANY OUTFLOW BOUNDARIES FROM MID DAY CONVECTION MAY ALSO ADD JUST ENOUGH BAROCLINICITY TO GENERATE STRONGER SUPERCELLS IN ANY CLUSTERS OF STORMS THAT FOLLOW THE ORIENTATION OF THE BOUNDARIES OR INCOMING SHORTWAVE. THE HIGHEST CONCENTRATION OF SHOWERS AND STORMS SHOULD ORIENT ITSELF IN A CORRIDOR AROUND THE MISSOURI RIVER. HAIL MAY BE THE MAIN THREAT INITIALLY FOR THESE STORMS DUE TO HIGH CAPE. BUT... AROUND MIDNIGHT OUTFLOW FROM DECAYING CELLS COULD QUICKLY LEAD TO A HIGHER WIND THREAT AS THE BULK OF THE ACTIVITY MOVES INTO THE EASTERN HALF OF THE CWA. TUESDAY THROUGH WEDNESDAY... A PAIR OF WEAK COLD FRONTS WILL PASS THROUGH THE REGION AND PROVIDE MORE FOCAL POINTS FOR STORMS AS SHORTWAVES IN THE SOUTHWEST FLOW ALOFT LATCH ONTO THE SURFACE FRONTS. NO PARTICULAR FEATURE LOOKS STRONG ENOUGH TO BECOME WIDESPREAD SEVERE BUT SCATTERED AFTERNOON SHOWERS AND ISOLATED SEVERE STORMS CAN NOT BE RULED OUT. LARGE SCALE PATTERN IS EXPECTED TO SLOWLY SWITCH TO MORE OF A ZONAL FLOW STRUCTURE WEDNESDAY MORNING WITH THE PASSAGE OF THE SECOND FRONT. 850MB TEMPERATURES SHOULD BE AROUND THE MID 10S TO 20S IN CELSIUS WHICH SHOULD TRANSLATE DOWN TO SEASONAL DAYTIME HIGHS IN THE MID 80S. .LONG TERM...WEDNESDAY NIGHT THROUGH MONDAY... NO MAJOR CHANGES WERE MADE TO THE EXTENDED FORECAST. MODELS ARE IN GOOD AGREEMENT THROUGH ABOUT DAY 5 AND THEN START TO DIFFER IN THE PLACEMENT OF A LOW PRESSURE SYSTEM OVER THE WEEKEND. WENT WITH CLIMO POPS FOR THE SUNDAY EVENING AND MONDAY MORNING TIME FRAME BASED ON BOTH MODELS SHOWING A BIT OF A WAVE OVER THE AREA. FRANSEN MODELS ARE IN DECENT AGREEMENT WITH BRINGING A SHORTWAVE TROUGH THROUGH THE AREA ON THURSDAY WITH A COLD FRONT. THIS WILL BRING A CHANCE OF THUNDERSTORMS TO THE AREA WITH SOMEWHAT COOLER THAN NORMAL TEMPERATURES. THE WAVE WILL EXIT THE REGION THURSDAY NIGHT WITH A DRY ZONAL FLOW FOR FRIDAY. LARGE UPPER RIDGE/HIGH TO THE SOUTH WILL EXPAND NORTH OVER THE WEEKEND BRINGING WARMER TEMPERATURES AND DRY WEATHER TO THE AREA. MOST AREAS WILL HAVE HIGHS IN THE 90S FOR THE WEEKEND WITH THE RIDGE FORECASTED TO PEAK ON SUNDAY. BOTH THE GFS AND ECMWF SLIDE THE RIDGE TO THE EAST NEXT MONDAY WITH A SOME WHAT UNSTABLE SOUTHWEST FLOW ALOFT DEVELOPING. SHORTWAVES ON THE FLOW ALOFT MAY BE ENOUGH TO TRIGGER A THUNDERSTORM. WILL MENTION A SLIGHT CHANCE FOR NOW. FORRESTER && .AVIATION... VFR TODAY. A LOW PRESSURE SYSTEM MOVING THROUGH THE STATE TODAY WILL MOVE ACROSS EASTERN MONTANA TODAY. EXPECT A CHANCE OF THUNDERSTORMS...SOME SEVERE FROM THE 00Z-12Z TUESDAY TIME FRAME. LARGE HAIL AND DAMAGING WINDS ALONG WITH HEAVY RAIN SHOULD BE EXPECTED WITH MVFR AND POSSIBLY IFR CONDITIONS FOR UP TO AN HOUR OR SO.FRANSEN && .GLASGOW WATCHES/WARNINGS/ADVISORIES...NONE. && WEATHER.GOV/GLASGOW
Hazardous weather outlook, Jul 25, 1:57 PM MST, 4 hours 38 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GLASGOW MT 257 PM MDT MON JUL 25 2011 MTZ016>027-059>062-262100- CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY- DANIELS-SHERIDAN-WESTERN ROOSEVELT-PETROLEUM-GARFIELD-MCCONE- RICHLAND-DAWSON-PRAIRIE-WIBAUX-NORTHERN PHILLIPS- SOUTHWEST PHILLIPS-NORTHERN VALLEY-EASTERN ROOSEVELT- 257 PM MDT MON JUL 25 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT A PAIR OF FRONTS WILL BRING ANOTHER ROUND OF STRONG STORMS TO THE AREA THIS EVENING AND TONIGHT. THE BEST CHANCE OF STORMS WILL OCCUR AFTER 6PM THROUGH MIDNIGHT. THEY ARE EXPECTED TO MOVE FROM THE SOUTHWEST TO THE NORTHEAST. SOME OF THE STORMS MAY BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL POSSIBLE. HEAVY RAIN IS ALSO POSSIBLE WHICH COULD LEAD TO ISOLATED FLASH FLOODING PROBLEMS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
In the hours before
Special weather statement, Jul 25, 5:19 PM MST, 1 hour 16 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
619 PM MDT MON JUL 25 2011
MTZ016-060-260115-
PHILLIPS-
619 PM MDT MON JUL 25 2011
THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
SOUTHWESTERN PHILLIPS COUNTY IN NORTHEAST MONTANA...
UNTIL 715 PM MDT.
AT 618 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 21 MILES NORTH OF ROY...MOVING NORTHEAST AT 20
MPH.
HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.
LOCATIONS IN THE ADVISORY INCLUDE...
RURAL AREAS OF SOUTHWESTERN PHILLIPS COUNTY...
LAT...LON 4793 10873 4793 10863 4800 10861 4798 10845
4821 10845 4826 10840 4776 10781 4759 10843
4761 10845 4759 10850 4761 10852 4761 10867
4764 10872 4764 10877 4768 10879 4775 10891
TIME...MOT...LOC 0019Z 227DEG 18KT 4763 10882
!RSMITH
WEATHER.GOV/GLASGOWSpecial weather statement, Jul 25, 6:31 PM MST, 4 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GLASGOW MT 731 PM MDT MON JUL 25 2011 MTZ016-017-022-260230- GARFIELD-PHILLIPS-VALLEY- 731 PM MDT MON JUL 25 2011 THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... SOUTHWESTERN VALLEY COUNTY IN NORTHEAST MONTANA... SOUTHEASTERN PHILLIPS COUNTY IN NORTHEAST MONTANA... NORTHWESTERN GARFIELD COUNTY IN NORTHEAST MONTANA... UNTIL 830 PM MDT. AT 725 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 18 MILES SOUTH OF MALTA TO U L BEND REC AREA...AND MOVING NORTHEAST AT 20 MPH. HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...DEVILS CREEK REC AREA...HINSDALE AND HELL CREEK REC AREA. LAT...LON 4845 10695 4756 10682 4740 10787 4827 10797 TIME...MOT...LOC 0131Z 246DEG 18KT 4811 10790 4750 10783 RSMITH WEATHER.GOV/GLASGOW
The radar
The Glasgow radar (KGGW), 84 km away, was scanning. The volume nearest the first event began at 01:35 UTC.
Event by event
3 thunderstorm wind, 3 hail, 1 funnel cloud. Local standard time, as filed.
Hail, Garfield
- When
- July 25, 7:15 PM MST
- Where
- Garfield County, Brusett
- Measured
- 1.75 in hail
- Reported by
- Public
- Coordinates
- 47.350, -107.250
Golf ball-sized hail stones reported along with 60 mph winds.
Hail, Garfield
- When
- July 25, 7:25 PM MST
- Where
- Garfield County, 9 mi NE of Brusett
- Measured
- 1 in hail
- Reported by
- Trained Spotter
- Coordinates
- 47.442, -107.114
Quarter-sized hail stones reported along with 60 mph winds.
Hail, Garfield
- When
- July 25, 7:30 PM MST
- Where
- Garfield County, 9 mi N of Jordan
- Measured
- 1.25 in hail
- Reported by
- Public
- Coordinates
- 47.450, -106.880
Funnel Cloud, Garfield
- When
- July 25, 7:50 PM MST
- Where
- Garfield County, 1.41 mi W of Jordan
- Reported by
- Law Enforcement
- Coordinates
- 47.320, -106.910
Garfield County Sheriff reported a funnel cloud near Jordan along with wind gusts up to 65 mph.
Thunderstorm Wind, McCone
- When
- July 25, 8:40 PM MST
- Where
- McCone County, 18.47 mi W of Brockway
- Measured
- 52 kt (60 mph) estimated gust
- Reported by
- Trained Spotter
- Coordinates
- 47.340, -106.160
Spotter estimated a 60 mph wind gust.
Thunderstorm Wind, Daniels
- When
- July 25, 9:00 PM MST
- Where
- Daniels County, 6 mi E of Scobey
- Measured
- 52 kt (60 mph) estimated gust
- Reported by
- Public
- Coordinates
- 48.800, -105.288
Strong winds tore some siding from a house.
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.
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- Funnel Cloud
- A rotating column of cloud extending from a thunderstorm that did not reach the ground.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Hail and Damaging Winds in New York, July 25, 2011
- Heavy Rain in Washington, July 25, 2011
- Hail and Damaging Winds in South Dakota, July 25, 2011
- Flash Flood and Damaging Winds in Virginia, July 25, 2011
- Lightning Strikes in Georgia, July 25, 2011
- Flash Flooding and Damaging Winds in South Dakota, July 25, 2011
- Damaging Winds in Virginia, July 25, 2011
- Damaging Winds in Pennsylvania, July 25, 2011
- Damaging Wind in South Carolina, July 25, 2011
- Flood in Pennsylvania, July 25, 2011
- Flash Flooding and Damaging Winds in Pennsylvania, July 25, 2011
- Hail in Minnesota, July 25, 2011
More
Every storm in Montana in 2011Every state in 2011This day in weather historyWarnings in Montana, July 2011
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: 338648, 338642, 338643, 338653, 338640, 338651, 338646.