After a day of record heat, a cold front moved in producing elevated showers and thunderstorms that produced some strong to severe downburst winds.
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.
After a day of record heat, a cold front moved in producing elevated showers and thunderstorms that produced some strong to severe downburst winds.
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 Sep 7, 2:05 PM MST, 2 hours 55 minutes earlier.
Area Forecast Discussion National Weather Service Glasgow MT 305 PM MDT Wed Sep 7 2022 .DISCUSSION... Many locations have already reached triple digit temperatures and relative humidity has dropped below 10 percent. The Red Flag Warning is well in place and beginning to verify. Similar thoughts on the heat advisory. Impacts this late in the season are more related to area schools generally not having air conditions as children are back in school. Area visibility sensors still showing 9 or 10 miles, so our thinking is that the smoke and haze is not thick enough to prevent this unusually strong ridge of high pressure from allowing high temperatures today to climb into the mid triple digits, although it may not happen until 4 or 5 PM for some locations. This evening through tonight, chances increase for some high-based rain showers and isolated thunderstorms from the southwest. Main severe weather threat for us would be downdraft winds if its associated rain shaft drops far enough. A few of the short-term models have hinted at that possibility today. Overnight tonight through Thursday morning, the chances for precipitation will slowly diminish away through our southeastern zones as the re-enforcing cold air advection moves in behind the cold front. It will feel like a huge relief this weekend, as temperatures drop back down to normal or just below normal. Next week, the ridge of high pressure will rebound, but will be weaker with Monday being the hottest - struggling to reach 90 degrees. ----BMickelson && .AVIATION... PATTERN: Strong ridge of high pressure will allow temperatures to climb into the triple digits today, which may result in high density altitude concerns. A strong low pressure trough approaches from the Canadian Rockies and will push a very welcome cold front through the region tonight. Some scattered rain showers and isolated thunderstorms are possible. FLIGHT CONDITIONS: VFR (haze and smoke may impact slant visibility). Clouds will increase along and near the cold frontal boundary this evening through the overnight hours. If any showers happens to pass directly over a TAF site, brief MVFR conditions may occur. WINDS: From the southwest up to 15 kts early this afternoon, then from the west this evening, gusting up to 25 kts. Tonight, behind the cold front expect winds from the northwest and north around 10 to 15 kts. EQUIPMENT: While the KGDV visibility sensor is down, amendments will be limited to clouds and wind for this terminal. && .FIRE WEATHER... Elevated to critical fire conditions will continue through this evening, with temperatures reaching above 100 degrees and afternoon humidity dropping into the single digits for much of the area. A frontal passage late this afternoon will shift winds from the south to west, and increase them above 15 mph with some higher gusts. With very dry fuels and slow humidity recovery tonight, a Red Flag Warning is in effect through this evening. Conditions will improve for the end of the week, with much cooler temperatures and improved humidity. ---BMickelson && .GLASGOW WATCHES/WARNINGS/ADVISORIES... Red Flag Warning until midnight MDT tonight for MTZ120-122-134>137. Heat Advisory until 8 PM MDT this evening for Central and Southeast Phillips...Central and Southern Valley...Daniels... Dawson...Eastern Roosevelt...Garfield...McCone...Northern Phillips...Northern Valley...Petroleum...Prairie...Richland... Sheridan...Southwest Phillips...Western Roosevelt...Wibaux. && weather.gov/glasgow
Special Weather Statement
National Weather Service Glasgow MT
442 PM MDT Wed Sep 7 2022
MTZ016-017-021-022-072345-
Petroleum MT-Garfield MT-Central and Southeast Phillips MT-
Central and Southern Valley MT-
442 PM MDT Wed Sep 7 2022
...A strong thunderstorm will impact portions of southeastern
Phillips, Petroleum, southwestern Garfield and southwestern Valley
Counties through 545 PM MDT...
At 439 PM MDT, Doppler radar was tracking a strong thunderstorm 11
miles southeast of Crooked Creek Rec Area, or 35 miles northeast of
Winnett, moving northeast at 45 mph.
HAZARD...Wind gusts up to 50 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Jordan, Winnett, Sand Springs, U L Bend Rec Area, Crooked Creek Rec
Area, Flatwillow, Devils Creek Rec Area, Hell Creek Rec Area,
Edwards, Mosby, Brusett, Petrolia Lake, Steve Fork, Tiegen, Valentine
and Cat Creek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4727 10872 4727 10859 4730 10859 4732 10832
4754 10826 4762 10813 4797 10693 4686 10672
4685 10789 4676 10783 4675 10863 4710 10861
4710 10874
TIME...MOT...LOC 2239Z 241DEG 41KT 4731 10775
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH
MaliawcoSpecial Weather Statement
National Weather Service Glasgow MT
555 PM MDT Wed Sep 7 2022
MTZ022-023-080100-
Garfield MT-McCone MT-
555 PM MDT Wed Sep 7 2022
...A strong thunderstorm will impact portions of northeastern
Garfield and western McCone Counties through 700 PM MDT...
At 553 PM MDT, Doppler radar was tracking a strong thunderstorm 9
miles northeast of Jordan, moving east at 45 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Jordan, Hell Creek Rec Area, Flowing Wells Rest Area, Nelson Creek
Rec Area, Rock Creek Rec Area, Weldon, Watkins and Van Norman.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4719 10693 4764 10701 4790 10577 4720 10578
TIME...MOT...LOC 2353Z 264DEG 39KT 4743 10677
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH
BernhartPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
557 PM MDT WED SEP 7 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0544 PM TSTM WND GST 14 NNW HELL CREEK REC A 47.80N 107.02W
09/07/2022 M55 MPH VALLEY MT MESONET
MEASURED VIA KING COULEE RAWS SITE.
&&
AEPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
559 PM MDT WED SEP 7 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0508 PM TSTM WND GST 7 SE DEVILS CREEK REC A 47.56N 107.53W
09/07/2022 M56 MPH GARFIELD MT MESONET
MEASURED VIA THE SOUTH SAWMILL CREEK RAWS
SITE.
&&
AEThe Glasgow radar (KGGW), 85 km away, was scanning. The volume nearest the first event began at 00:02 UTC.
3 thunderstorm wind. Local standard time, as filed.
A trained spotter reported two sheds damaged. One was leaned up against grain bins and the other had its roof torn off. A fabric carport was also damaged. Winds were estimated at 60 mph.
A trained spotter measured a 61 mph thunderstorm wind gust.
The Big Sky Field Airport AWOS (KS85) measured a thunderstorm wind gust of 59 mph.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2022Every state in 2022This day in weather historyWarnings in Montana, September 2022
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: 1050484, 1050485, 1050486.