Alert archive / Montana / Severe Thunderstorm Warnings in 2024

Severe Thunderstorm Warning 124, NWS Great Falls, MT

August 23, 2024Beaverhead County, Gallatin County, Madison County, Montana

NWS Great Falls, MT issued this severe thunderstorm warning at Aug 23, 2024, 4:32 PM MDT for Beaverhead County, Gallatin County, Madison County, Montana. It was in force for 43 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, 2024, 4:32 PM MDT (22:32 UTC)
Expired: Aug 23, 2024, 5:15 PM MDT
In force: 43 min
Issued by: NWS Great Falls, MT
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Beaverhead County, MT, Gallatin County, MT, Madison County, MT

The radar

The Great Falls radar (KTFX), 242 km from the middle of the area, began a volume at 22:32 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 23, 2:54 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 10.5 hours before the alert went out and 260 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 25 J/kg
Mixed-layer CIN: -548 J/kg
Mixed-layer LCL: 1852 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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, 4:05 PM MDT, 27 minutes earlier.

Area forecast discussion, Aug 23, 4:05 PM MDT, 27 minutes before

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In the hours before

Local storm report, Aug 23, 4:19 PM MDT, 13 minutes before

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Local storm report, Aug 23, 4:20 PM MDT, 12 minutes before

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Local storm report, Aug 23, 4:23 PM MDT, 9 minutes before

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Special weather statement, Aug 23, 4:24 PM MDT, 8 minutes before

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Local storm report, Aug 23, 4:27 PM MDT, 5 minutes before

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Special weather statement, Aug 23, 4:31 PM MDT, 1 minute before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 23, 1:19 AM MDT	Severe Thunderstorm Warning Considerable damage threat	TFX	Beaverhead, Madison	41 min
Aug 23, 1:56 AM MDT	Severe Thunderstorm Warning	TFX	Beaverhead, Madison	64 min
Aug 23, 6:39 AM MDT	Red Flag Warning	TFX	Broadwater, Cascade, Fergus, Gallatin, Jefferson, Judith Basin and 3 more	15 hr
Aug 23, 7:09 AM MDT	High Wind Warning	TFX	Beaverhead, Broadwater, Gallatin, Jefferson, Lewis and Clark, Madison	12 hr
Aug 23, 1:14 PM MDT	Special Weather Statement	TFX		31 min
Aug 23, 1:43 PM MDT	Special Weather Statement	TFX	Madison	32 min
Aug 23, 1:47 PM MDT	Severe Thunderstorm Warning	TFX	Beaverhead, Madison	43 min
Aug 23, 2:04 PM MDT	Special Weather Statement	TFX		26 min
Aug 23, 2:06 PM MDT	Special Weather Statement	TFX		24 min
Aug 23, 2:10 PM MDT	Special Weather Statement	TFX	Deer Lodge	35 min
Aug 23, 2:22 PM MDT	Severe Thunderstorm Warning	TFX	Beaverhead, Madison	38 min
Aug 23, 2:27 PM MDT	Special Weather Statement	TFX		33 min
Aug 23, 2:27 PM MDT	Special Weather Statement	TFX	Beaverhead	33 min
Aug 23, 2:30 PM MDT	Special Weather Statement	TFX	Beaverhead	30 min
Aug 23, 2:36 PM MDT	Special Weather Statement	TFX	Ravalli	24 min
Aug 23, 2:55 PM MDT	Special Weather Statement	TFX	Silver Bow	35 min
Aug 23, 2:57 PM MDT	Special Weather Statement	TFX	Madison	33 min
Aug 23, 3:22 PM MDT	Special Weather Statement	TFX		23 min
Aug 23, 3:26 PM MDT	Special Weather Statement	TFX	Beaverhead	34 min
Aug 23, 3:33 PM MDT	Special Weather Statement	TFX	Broadwater, Jefferson, Meagher	42 min
Aug 23, 3:51 PM MDT	Severe Thunderstorm Warning Considerable damage threat	TFX	Beaverhead, Madison	39 min
Aug 23, 3:54 PM MDT	Special Weather Statement	TFX	Cascade	36 min
Aug 23, 4:09 PM MDT	Severe Thunderstorm Warning	TFX	Jefferson, Lewis and Clark	36 min
Aug 23, 4:24 PM MDT	Special Weather Statement	TFX	Glacier	36 min
Aug 23, 4:31 PM MDT	Special Weather Statement	TFX	Chouteau	29 min
Aug 23, 4:45 PM MDT	Severe Thunderstorm Warning	TFX	Cascade, Lewis and Clark	30 min
Aug 23, 4:47 PM MDT	Special Weather Statement	TFX	Judith Basin	28 min
Aug 23, 4:59 PM MDT	Severe Thunderstorm Warning	TFX	Cascade, Lewis and Clark, Teton	31 min
Aug 23, 5:04 PM MDT	Severe Thunderstorm Warning Considerable damage threat	TFX	Cascade, Chouteau, Judith Basin, Teton	26 min
Aug 23, 5:08 PM MDT	Special Weather Statement	TFX	Fergus, Judith Basin	67 min
Aug 23, 5:13 PM MDT	Special Weather Statement	TFX	Madison	32 min
Aug 23, 5:18 PM MDT	Special Weather Statement	TFX	Chouteau	42 min
Aug 23, 5:23 PM MDT	Severe Thunderstorm Warning Considerable damage threat	TFX	Blaine, Cascade, Chouteau, Fergus, Judith Basin	67 min
Aug 23, 5:27 PM MDT	Severe Thunderstorm Warning Considerable damage threat	TFX	Cascade, Chouteau, Glacier, Lewis and Clark, Liberty, Pondera and 2 more	63 min
Aug 23, 5:46 PM MDT	Special Weather Statement	TFX	Madison	44 min
Aug 23, 5:52 PM MDT	Severe Thunderstorm Warning Destructive damage threat	TFX	Pondera, Teton, Toole	38 min

Nearby

Severe Thunderstorm Warnings in Montana, 2024 Every severe thunderstorm warning in 2024

Sources

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