Alert archive / Montana / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 149, NWS Great Falls, MT

August 23, 2022Glacier County, Montana

NWS Great Falls, MT issued this severe thunderstorm warning at Aug 23, 2022, 8:35 PM MDT for Glacier County, Montana. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 23, 2022, 8:35 PM MDT (02:35 UTC)
Expired
Aug 23, 2022, 9:00 PM MDT
In force
25 min
Issued by
NWS Great Falls, MT
Area
Storm-based polygon
Hail
1.5 in
Wind
50.0 mph

County Glacier County, MT

The radar

The Great Falls radar (KTFX), 183 km from the middle of the area, began a volume at 02:37 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Aug 23, 8:26 PM MDT, 9 minutes earlier.

Area forecast discussion, Aug 23, 8:26 PM MDT, 9 minutes before
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In the hours before

Special weather statement, Aug 23, 6:43 PM MDT, 1 hour 52 minutes before
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Special weather statement, Aug 23, 6:49 PM MDT, 1 hour 46 minutes before
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Special weather statement, Aug 23, 7:25 PM MDT, 1 hour 10 minutes before
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Special weather statement, Aug 23, 7:42 PM MDT, 53 minutes before
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Special weather statement, Aug 23, 7:53 PM MDT, 42 minutes before
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Special weather statement, Aug 23, 8:24 PM MDT, 11 minutes before
Special Weather Statement
National Weather Service Great Falls MT
824 PM MDT Tue Aug 23 2022

MTZ009-010-240330-
Northern Rocky Mountain Front MT-Eastern Glacier MT-
824 PM MDT Tue Aug 23 2022

...A strong thunderstorm will impact portions of northeastern Glacier
County through 930 PM MDT...

At 824 PM MDT, Doppler radar was tracking a strong thunderstorm 13
miles north of North Browning, or 28 miles west of Cut Bank, moving
east at 15 mph.

HAZARD...Winds in excess of 30 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

This storm will remain over mainly rural areas of northeastern
Glacier County.

This includes Highway 2 between mile markers 238 and 244.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4869 11311 4883 11311 4890 11254 4859 11255
TIME...MOT...LOC 0224Z 274DEG 11KT 4875 11294

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...30 MPH

CMC

The office that day

Everything else NWS Great Falls, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 23, 6:43 PM MDTSpecial Weather StatementTFXToole62 min
Aug 23, 6:49 PM MDTSpecial Weather StatementTFXGlacier56 min
Aug 23, 7:25 PM MDTSpecial Weather StatementTFXToole50 min
Aug 23, 7:42 PM MDTSpecial Weather StatementTFXToole48 min
Aug 23, 7:53 PM MDTSpecial Weather StatementTFXGlacier52 min
Aug 23, 8:24 PM MDTSpecial Weather StatementTFXGlacier66 min
Aug 23, 8:53 PM MDTSpecial Weather StatementTFXGlacier37 min
Aug 23, 9:27 PM MDTSpecial Weather StatementTFXPondera33 min
Aug 23, 9:34 PM MDTSevere Thunderstorm WarningTFXGlacier, Pondera41 min
Aug 23, 9:39 PM MDTAreal Flood AdvisoryTFXGlacier, Pondera2 hr
Aug 23, 10:19 PM MDTSpecial Weather StatementTFXPondera41 min
Aug 23, 11:15 PM MDTAreal Flood AdvisoryTFXPondera3 hr
Aug 23, 11:20 PM MDTAreal Flood AdvisoryTFXGlacier, Pondera, Toole3 hr
Aug 24, 1:12 AM MDTAreal Flood AdvisoryTFXCascade, Lewis and Clark, Teton3 hr
Aug 24, 1:48 AM MDTAreal Flood AdvisoryTFXCascade3 hr
Aug 24, 2:02 AM MDTFlood WatchTFX46 hr
Aug 24, 3:18 AM MDTSpecial Weather StatementTFXChouteau42 min
Aug 24, 6:49 AM MDTSpecial Weather StatementTFXCascade56 min
Aug 24, 4:15 PM MDTSpecial Weather StatementTFXBeaverhead45 min
Aug 24, 5:03 PM MDTAreal Flood AdvisoryTFXToole117 min
Aug 24, 5:15 PM MDTSpecial Weather StatementTFXDeer Lodge45 min
Aug 24, 5:16 PM MDTSpecial Weather StatementTFXBeaverhead44 min
Aug 24, 5:37 PM MDTSpecial Weather StatementTFXDeer Lodge53 min
Aug 24, 5:41 PM MDTSpecial Weather StatementTFXSilver Bow49 min

Nearby

Severe Thunderstorm Warnings in Montana, 2022Every severe thunderstorm warning in 2022

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.