A strong trough of low pressure, a cold front, and plentiful surface moisture combined with a moderate to very unstable atmosphere to produce and sustain many severe thunderstorms across most of eastern Montana.
Every event with a place to put it. Tap one for its entry below.
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 GGW wrote it up.
A strong trough of low pressure, a cold front, and plentiful surface moisture combined with a moderate to very unstable atmosphere to produce and sustain many severe thunderstorms across most of eastern Montana.
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 23, 1:39 PM MST, 10 hours 51 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GLASGOW MT 239 PM MDT WED JUL 23 2014 .SHORT TERM...FOR NORTHEAST MONTANA...TONIGHT THROUGH FRIDAY... MORE ACTIVE CONDITIONS ARE EXPECTED THE NEXT 24 TO 36 HOURS THAN RECENT PAST. A DEEP UPPER TROUGH FOR JULY STANDARDS IS EXPECTED TO MOVE INTO THE NORTHERN ROCKIES THURSDAY PROVIDING AN INCREASE IN SW FLOW ALOFT FOR THE AREA. THIS SET-UP IS ALLOWING AN INCREASED THREAT FOR SEVERE THUNDERSTORMS LATE TODAY AND AGAIN THURSDAY (MAINLY AFTERNOON). MODELS ARE THROWING OUT DIFFERENT SCENARIOS OF WHEN AND WHERE THESE EVENTS WILL HAPPEN SPECIFICALLY BUT STORMS TODAY ARE EXPECTED TO DROP SOUTHEAST FROM SW SASK...SO SW ZONES MAY ESCAPE THIS ONE. ON THURSDAY...STORMS FIRE UP AGAIN PROBABLY OVER THE EASTERN AND CENTRAL ZONES THEN MOVE EAST OR NORTHEAST OUT AHEAD OF A COLD FRONT. THE STORMS OVER THE NE ZONES LOOK BEST TO BE SEVERE (LARGE HAIL/DAMAGING WINDS SEEM TO BE THE BEST THREATS). UPPER LOW MOVES INTO SOUTHERN ALBERTA WITH THE COLD FRONT EXITING INTO THE DAKOTAS THURSDAY NIGHT. ON FRIDAY...UPPER LOW MOVES ACROSS SOUTHERN SASK. CLOUDY SHOWERY CONDITIONS LOOK TO STAY OVER SASK WITH WINDY AND DRIER CONDITIONS OVER EASTERN MT. TFJ .LONG TERM...FRIDAY NIGHT THROUGH WEDNESDAY... THE EXTENDED FORECAST REMAINS ON TRACK WITH MODELS SHOWING A LARGE RIDGE BUILDING INTO THE CWA FROM THE SOUTHWEST OVER THE WEEKEND WHICH WILL PERSIST INTO EARLY NEXT WEEK. EXPECT LARGE SCALE SUBSIDENCE TO MAINTAIN DRY CONDITIONS THOUGH RISING HEIGHTS ASSOCIATED WITH THE APPROACHING HIGH PRESSURE WILL ALSO PRODUCE A GRADUAL WARMING TREND. MALIAWCO PREVIOUS LONG TERM DISCUSSION... BY LATE FRIDAY NIGHT...THE DYNAMIC AND ACTIVE WEATHER PATTERN FROM MID- WEEK WILL HAVE TRANSITIONED TO A MORE CALM AND BENIGN WEATHER PATTERN. THE LOW PRESSURE SYSTEM WILL BE PUSHING EASTWARD THROUGH SOUTHERN SASKATCHEWAN AND WILL SPREAD A FEW SPRINKLES AT BEST THROUGH OUR NORTHERN AND NORTHEASTERN ZONES. WAS NOT EVEN CONFIDENT ENOUGH IN THIS TO MENTION SPRINKLES IN THE GRIDS...SO KEPT POPS HIGH SILENT FOR NOW. BY SATURDAY NIGHT...MODEL CONSENSUS SUPPORT A LARGE RIDGE OF HIGH PRESSURE BUILDING THROUGH OUR CWA FROM THE SOUTHWEST. SYNOPTICALLY...THIS RIDGE WILL BE IN PLACE OVER MOST OF THE WESTERN UNITED STATES THROUGHOUT THE REMAINDER OF THE FORECAST PERIOD...BRINGING QUIET AND WARMER WEATHER CONDITIONS TO NORTHEAST MONTANA FOR MOST OF THE FORECAST PERIOD. ONE DISCREPANCY IS EVIDENT AS THE GFS WANTS TO ALLOW A SHORT WAVE DISTURBANCE RIDE UP AND AROUND THE CREST OF THE RIDGE THROUGH OUR CWA ON TUESDAY. AGAIN...THIS COULD RESULT IN A SLIGHT CHANCE FOR THUNDERSTORMS WHICH I INCLUDED IN THE NAME OF COLLABORATION...BUT AS MODEL CONSENSUS IS LACKING... IT MAY SIMPLY RESULT IN A FEW SPRINKLES. WOULD BE GOOD TO FOLLOW SUBSEQUENT TRENDS TO MORE CLOSELY ADJUST THIS PORTION OF THE FORECAST. BMICKELSON && .AVIATION... VFR CONDITIONS WILL PREVAIL THROUGH TONIGHT. THE EXCEPTION MAY BE BRIEF PERIODS OF REDUCED VISIBILITIES IN THUNDERSTORMS THAT MAY MOVE DIRECTLY OVER A TAF SITE. GUSTY SHIFTING WINDS MAY ALSO ACCOMPANY ANY STORMS. PREVAILING WINDS WILL BE OUT OF THE EAST AT 10 TO 20 KTS. MALIAWCO && .FIRE WEATHER... A STRONG LOW PRESSURE SYSTEM WILL MOVE INTO THE NORTHERN ROCKIES THURSDAY BRINGING A COLD FRONT THROUGH THE REGION THURSDAY MORNING. MOIST SOUTHEAST WINDS WILL BRING A STRONG TO SEVERE THUNDERSTORM THREAT WITH LOCALIZED WETTING RAINS THIS EVENING. HUMIDITY WILL DROP INTO THE TEENS AND LOW 20S BEHIND THE FRONT THURSDAY AFTERNOON WITH STRONG NORTHWEST WINDS DEVELOPING...PROMPTING THE FIRE WEATHER WATCH FOR FIRE WEATHER ZONES 134 THROUGH 137. && .GLASGOW WATCHES/WARNINGS/ADVISORIES... FIRE WEATHER WATCH FROM THURSDAY AFTERNOON THROUGH THURSDAY EVENING FOR MTZ134>137. LAKE WIND ADVISORY UNTIL 4 AM MDT THURSDAY FOR FORT PECK LAKE FOR CENTRAL AND SOUTHEAST PHILLIPS...CENTRAL AND SOUTHERN VALLEY...GARFIELD...MCCONE...PETROLEUM. && WEATHER.GOV/GLASGOW
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GLASGOW MT 846 PM MDT WED JUL 23 2014 MTZ018>020-023>027-062-241000- DANIELS-SHERIDAN-WESTERN ROOSEVELT-MCCONE-RICHLAND-DAWSON-PRAIRIE- WIBAUX-EASTERN ROOSEVELT- 846 PM MDT WED JUL 23 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...TONIGHT SCATTERED THUNDERSTORMS WILL MOVE ACROSS THE REGION OVERNIGHT WITH SOME GUSTY WIND AND HEAVY RAINS. ADDITIONALLY...GUSTY SOUTHEAST WINDS ARE ANTICIPATED AHEAD OF A FRONTAL SYSTEM THIS AFTERNOON THROUGH THIS EVENING AND A LAKE WIND ADVISORY IS IN EFFECT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A COLD FRONT WILL SWEEP ACROSS THE REGION ON THURSDAY. A FEW STRONG OR SEVERE THUNDERSTORMS ARE POSSIBLE MAINLY NEAR THE NORTH DAKOTA BORDER THURSDAY AFTERNOON. STRONG NORTHWEST WINDS WILL ALSO DEVELOP BEHIND THE FRONT THURSDAY AFTERNOON. THE COMBINATION GUSTY NORTHWEST WINDS... LOW RELATIVE HUMIDITY... AND DRY FUELS MAY PRODUCE CRITICAL FIRE WEATHER CONDITIONS ON THURSDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ016-017-021-022-059>061-241000- CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY- PETROLEUM-GARFIELD-NORTHERN PHILLIPS-SOUTHWEST PHILLIPS- NORTHERN VALLEY- 846 PM MDT WED JUL 23 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...TONIGHT A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 3 AM...SCATTERED THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE THROUGH THE EARLY MORNING HOURS. ADDITIONALLY...GUSTY SOUTHEAST WINDS ARE ANTICIPATED AHEAD OF A FRONTAL SYSTEM THIS AFTERNOON THROUGH THIS EVENING AND A LAKE WIND ADVISORY IS IN EFFECT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A COLD FRONT WILL SWEEP ACROSS THE REGION ON THURSDAY. A FEW STRONG OR SEVERE THUNDERSTORMS ARE POSSIBLE MAINLY NEAR THE NORTH DAKOTA BORDER THURSDAY AFTERNOON. STRONG NORTHWEST WINDS WILL ALSO DEVELOP BEHIND THE FRONT THURSDAY AFTERNOON. THE COMBINATION GUSTY NORTHWEST WINDS... LOW RELATIVE HUMIDITY... AND DRY FUELS MAY PRODUCE CRITICAL FIRE WEATHER CONDITIONS ON THURSDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
1123 PM MDT WED JUL 23 2014
MTZ018-061-240615-
DANIELS-VALLEY-
1123 PM MDT WED JUL 23 2014
THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
NORTHEASTERN VALLEY COUNTY IN NORTHEAST MONTANA...
NORTHWESTERN DANIELS COUNTY IN NORTHEAST MONTANA...
UNTIL 1215 AM MDT.
AT 1120 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR OPHEIM...MOVING EAST AT 40 MPH.
HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.
LOCATIONS IN THE ADVISORY INCLUDE...
RICHLAND...
PEERLESS...
THIS STORM MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN
EFFECT FOR THIS AREA. BE CERTAIN TO MONITOR LOCAL RADIO AND TV
STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
LAT...LON 4872 10575 4879 10652 4886 10657 4901 10610
4901 10582
TIME...MOT...LOC 0523Z 261DEG 33KT 4885 10637
MICKELSON
WEATHER.GOV/GLASGOWSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
1154 PM MDT WED JUL 23 2014
MTZ059-240645-
PHILLIPS-
1154 PM MDT WED JUL 23 2014
THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
NORTHERN PHILLIPS COUNTY IN NORTHEAST MONTANA...
UNTIL 1245 AM MDT.
AT 1153 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 9 MILES NORTHEAST OF TURNER...MOVING SOUTHEAST AT
65 MPH.
HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.
LOCATIONS IN THE ADVISORY INCLUDE...
LORING...
LAT...LON 4900 10801 4890 10766 4856 10807 4875 10828
4891 10827 4892 10825 4900 10825 4901 10824
TIME...MOT...LOC 0554Z 307DEG 56KT 4889 10820
MICKELSON
WEATHER.GOV/GLASGOWSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
1224 AM MDT THU JUL 24 2014
MTZ016-021-240715-
PETROLEUM-PHILLIPS-
1224 AM MDT THU JUL 24 2014
THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
SOUTHERN PHILLIPS COUNTY IN NORTHEAST MONTANA...
NORTHEASTERN PETROLEUM COUNTY IN NORTHEAST MONTANA...
UNTIL 115 AM MDT.
AT 1221 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 14 MILES WEST OF
FOURCHETTE TO FOURCHETTE TO 8 MILES NORTHWEST OF CROOKED CREEK REC
AREA...AND MOVING NORTHEAST AT 50 MPH.
WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH
FREQUENT DANGEROUS LIGHTNING.
LOCATIONS IN THE ADVISORY INCLUDE...
RURAL AREAS OF SOUTHERN PHILLIPS COUNTY...
RURAL AREAS OF NORTHEASTERN PETROLEUM COUNTY...
RURAL AREAS OF SOUTHEASTERN PHILLIPS COUNTY...
THIS STORM MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN
EFFECT FOR THIS AREA. BE CERTAIN TO MONITOR LOCAL RADIO AND TV
STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
LAT...LON 4780 10820 4808 10778 4792 10744 4766 10745
4764 10753 4765 10760 4763 10762 4765 10765
4763 10765 4763 10769 4759 10772 4747 10816
4762 10811 4768 10821
TIME...MOT...LOC 0624Z 242DEG 44KT 4782 10820 4769 10797
4753 10801
MICKELSON
WEATHER.GOV/GLASGOWSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
1231 AM MDT THU JUL 24 2014
MTZ016-059-240715-
PHILLIPS-
1231 AM MDT THU JUL 24 2014
THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
CENTRAL PHILLIPS COUNTY IN NORTHEAST MONTANA...
UNTIL 115 AM MDT.
AT 1229 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 12 MILES SOUTHWEST OF DODSON...MOVING NORTHEAST
AT 25 MPH.
WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
FREQUENT DANGEROUS LIGHTNING.
LOCATIONS IN THE ADVISORY INCLUDE...
DODSON...
THIS STORM MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN
EFFECT FOR THIS AREA. BE CERTAIN TO MONITOR LOCAL RADIO AND TV
STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
LAT...LON 4823 10842 4844 10842 4844 10835 4857 10836
4858 10833 4860 10833 4870 10821 4841 10786
4820 10844 4821 10845 4822 10845
TIME...MOT...LOC 0631Z 230DEG 22KT 4832 10847
MICKELSON
WEATHER.GOV/GLASGOWSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
1246 AM MDT THU JUL 24 2014
MTZ016-017-022-059-060-240745-
GARFIELD-PHILLIPS-VALLEY-
1246 AM MDT THU JUL 24 2014
THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
SOUTHWESTERN VALLEY COUNTY IN NORTHEAST MONTANA...
PHILLIPS COUNTY IN NORTHEAST MONTANA...
NORTHWESTERN GARFIELD COUNTY IN NORTHEAST MONTANA...
UNTIL 145 AM MDT.
AT 1243 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 21 MILES NORTHWEST
OF PORT OF MORGAN TO 7 MILES SOUTHEAST OF TURNER TO 10 MILES
SOUTHWEST OF DODSON TO 9 MILES EAST OF ZORTMAN TO DEVILS CREEK REC
AREA...AND MOVING EAST AT 25 MPH.
HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THESE STORMS.
LOCATIONS IN THE ADVISORY INCLUDE...
DODSON...
PORT OF MORGAN...
LORING AND PORT OF MORGAN...
MALTA...
WHITEWATER...
THIS STORM MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN
EFFECT FOR THIS AREA. BE CERTAIN TO MONITOR LOCAL RADIO AND TV
STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
LAT...LON 4901 10721 4877 10732 4839 10745 4809 10735
4774 10699 4755 10765 4791 10843 4800 10845
4844 10842 4844 10835 4874 10833 4875 10827
4891 10827 4892 10825 4901 10824
TIME...MOT...LOC 0646Z 269DEG 23KT 4923 10810 4879 10826
4830 10838 4791 10829 4763 10759
MICKELSON
WEATHER.GOV/GLASGOWSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GLASGOW MT 116 AM MDT THU JUL 24 2014 MTZ022-240800- GARFIELD- 116 AM MDT THU JUL 24 2014 THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A SIGNIFICANT WEATHER ADVISORY FOR... NORTHERN GARFIELD COUNTY IN NORTHEAST MONTANA... UNTIL 200 AM MDT. AT 113 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR BRUSETT...MOVING NORTHEAST AT 30 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS IN THE ADVISORY INCLUDE... JORDAN... THIS STORM MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THIS AREA. BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. LAT...LON 4767 10698 4738 10658 4721 10756 4737 10761 TIME...MOT...LOC 0716Z 244DEG 27KT 4738 10727 MICKELSON WEATHER.GOV/GLASGOW
The Glasgow radar (KGGW), 105 km away, was scanning. The volume nearest the first event began at 07:30 UTC.
29 thunderstorm wind, 22 hail, 1 tornado. Local standard time, as filed.
Trained spotter reported mostly quarter-sized hail mixed with some half dollar-sized hail.
Public reported half dollar-sized hail. Duration of 10 minutes.
Public reported quarter-sized hail.
Trained spotter reported quarter-sized hail.
Public reported hail up to the size of golf balls. Duration of 20 minutes. Neighbors sustained significant crop damage.
Local newspaper reported two power poles were knocked down. Power failure continued for two hours.
Trained spotter reported quarter-sized hail.
Trained spotter reported 60 mph wind gusts.
Trained spotter reported penny-sized hail with heavy rain and wind gusts up to 45 mph.
Public reported quarter-sized hail with heavy rain.
Public reported golf ball-sized hail causing damage to a window on a house. Hail also destroyed a garden. Hail created a swath of total crop damage measuring one-half to one mile wide and at least three miles long. Information was relayed from Garfield County extension agent and then from property owners. Hail duration of 5 minutes.
The Bluff Creek RAWS site measured a 58 mph wind gust.
Winds estimated to 80 mph and blew shingles off a roof, and broke a window. Duration of very strong winds was at least 20 minutes.
Public reported ping pong ball-sized hail damaged a garden and some plants. Hail caused more significant drop damage south and west of this location.
Trained spotter reported penny-sized hail with heavy rain and winds up to 40 mph.
The mesonet site at Saint Marie measured a peak wind of 67 mph. These winds were a combination of thunderstorm wind gusts and post-cold frontal winds. The strong and severe winds continued for an hour and 5 minutes.
Glasgow airport ASOS measured a wind gust of 59 mph. Winds continued gusting above 58 mph for nearly 1 hour. These winds were a combination of thunderstorm wind gusts and post-frontal wind. The peak wind gust was 60 mph. Numerous large tree branches were down and some roof shingles were damaged.
The King Coulee RAWS site measured a 66 mph wind gust.
Trained spotter measured a 73 mph wind gust.
Trained spotter reported dime-sized hail covering the ground to a depth of four inches, and wind gusts of 50 to 60 mph.
Wind gust of 74 mph was recorded on an automated weather station. Trained spotter was out of town during the event, but reported it later.
NWS Employee reported a power pole was bent over with wires lying on the ground.
Public reported large round hay bales were blown around and tipped over, having travelled from one field, through a ditch, and onto another field.
Trained spotter reported quarter-sized hail covering the ground.
Trained spotter reported a roof blew off a barn.
Public estimated 80 mph winds which blew shingles off a roof and broke a window.
Trained spotter reported penny-sized hail. Event time estimated.
Trained spotter reported golf ball-sized hail breaking vehicle windshields.
Trained spotter reported some trees were blown down.
Public reported large trees blown down with significant damage.
Trained spotter estimated wind gusts of 50 to 60 mph and some tree limbs broken.
Trained spotter reported penny-sized hail.
Roosevelt County dispatch reported a tree and a power line blown down.
Glasgow airport ASOS measured a 60 mph wind gust.
NWS employee reported a 60 mph wind gust in the town of Glasgow.
Trained spotter estimated 80 mph winds which blew off a shop door.
Wolf Point airport ASOS measured a 59 mph wind gust.
NWS Employee reported a 59 mph wind gust in the town of Wolf Point.
McDonalds DOT site measured a 60 mph wind gust.
Cow Creek DOT site measured a 59 mph wind gust.
Trained spotter reported a 60 mph wind gust with pea-sized hail.
Trained spotter reported roof blown off a barn.
Trained spotter reported mostly quarter-sized hail with some golf ball sized-hail.
Trained spotter reported mostly dime-sized to penny-sized hail mixed with some quarter-sized hail.
Trained spotter estimated 60 mph wind gusts.
Trained spotter reported penny-sized hail.
Trained spotter reported nickel-sized hail with heavy rain and wind gusts up to 50 mph.
Trained spotter reported short-lived tornado moving northeast. Path length and width have been estimated. No damage was found.
Public reported wind damage at two farms located 6 and 7 miles south of Wibaux. Hay bales were moved across fields. A shed was destroyed and a trailer was flipped over.
Public reported golf ball-sized hail.
Trained spotter reported half dollar-sized hail with very heavy rain.
Trained spotter reported quarter-sized hail.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2014Every state in 2014This day in weather historyThe tornado archive for Montana, 2014Warnings in Montana, July 2014
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: 532377, 532378, 532382, 532386, 532389, 532392, 532394, 532399, 532396, 532397, 532409, 532422, 532439, 532427, 532436, 532441, 532451, 532449, 532452, 532432, 532454, 532447, 532443, 532428, 532453, 532499, 532473, 532429, 532434, 532456, 532476, 532480, 532485, 532500, 532501, 532460, 532487, 532488, 532477, 532489, and more.