Alert archive / Montana / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 72, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Aug 6, 2024, 9:02 PM MDT for Cascade County, Chouteau 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 6, 2024, 9:02 PM MDT (03:02 UTC)
- Expired
- Aug 6, 2024, 9:45 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 Cascade County, MT, Chouteau County, MT
The radar
The Great Falls radar (KTFX), 40 km from the middle of the area, began a volume at 03:04 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 6, 5:01 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
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 6, 2:25 PM MDT, 6 hours 37 minutes earlier.
Area forecast discussion, Aug 6, 2:25 PM MDT, 6 hours 37 minutes before
Area Forecast Discussion National Weather Service Great Falls MT 225 PM MDT Tue Aug 6 2024 .SYNOPSIS... Widespread showers and thunderstorms are expected through the evening hours tonight across portions of Southwest, Central, and North Central Montana, with showers and thunderstorms lingering into the morning hours on Wednesday across Central and North Central Montana. A few thunderstorms through the evening hours could become severe and produce damaging winds and large hail, with the highest chance of seeing these storms existing over Central and North Central Montana. && .DISCUSSION... Rest of today through tonight...primary concern through the early to mid-evening hours tonight (i.e. 6-9PM MDT) will be the threat for large hail and damaging winds; particularly northeast of a Townsend, to Helena, to Lincoln, to Browning line where a 15-30% chance of seeing damaging winds and/or large hail exists. Additionally, a marginal risk (i.e. 5% chance) for excessive rainfall leading to flash flooding exists northeast of a Bozeman to Boulder line, with the primary concern for flash flooding being confined to recent burn scars given their lowered flash flooding values. Latest NBM probabilities for rainfall supports a 60% or greater chance for 0.25" north of a Kings Hill Pass to Bowman Corner line through 12z Wednesday, with generally a 30-60% chance of 0.5" or greater across these same areas. Showers and general thunderstorms will linger beyond the main severe thunderstorm threat window, especially northeast of a Kings Hill Pass to Bowman Corner line, through the morning hours on Wednesday. - Moldan Wednesday through next Tuesday...Precipitation lingers into Wednesday morning as we transition into northwest flow aloft. A cold front Wednesday will bring another round of scattered showers and storms during the afternoon, but not to the intensity of Tuesday's storms. The upper level low to our northeast in Canada, will help usher in cooler air for Wednesday and Thursday. This will drop temperatures to 10-20 degrees below normal. The upper level low also continues to wrap moisture around it into the region, so another round of precipitation is forecasted for Thursday. Daily rounds of precipitation is still forecasted through the beginning of next week, as upper level trough returns to the Northwest U.S Friday and through the forecast period. Though, this will bring southwesterly flow aloft and help temperatures gradually warm up back to close to seasonal averages for the beginning of next week. -Wilson && .AVIATION... 06/18Z TAF Period The first concern for today will be for showers and thunderstorms developing this afternoon, spreading east and northeastward with time through the late afternoon and evening. Gusty winds, hail, and lightning are the main concerns with stronger thunderstorms. Then, sub-VFR ceilings move in from the north overnight across the plains, with additional showers and isolated thunderstorms around through the morning tomorrow across Central and North-central Montana. Mountains will be obscured across North-central and portions of Central Montana from late tonight into tomorrow. -AM Refer to weather.gov/zlc for more detailed regional aviation weather and hazard information. && .PRELIMINARY POINT TEMPS/POPS... GTF 55 63 50 68 / 100 80 30 20 CTB 50 61 46 66 / 100 90 40 20 HLN 58 74 53 73 / 70 70 20 30 BZN 52 79 49 72 / 50 50 30 20 WYS 42 76 42 73 / 30 30 30 20 DLN 49 78 46 72 / 30 20 10 10 HVR 55 68 48 71 / 90 70 20 10 LWT 53 63 43 64 / 90 90 40 30 && .TFX WATCHES/WARNINGS/ADVISORIES... None. && http://www.weather.gov/greatfalls
In the hours before
Local storm report, Aug 6, 5:15 PM MDT, 3 hours 47 minutes before
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</html>Special weather statement, Aug 6, 5:23 PM MDT, 3 hours 39 minutes before
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</html>Special weather statement, Aug 6, 5:23 PM MDT, 3 hours 39 minutes before
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</html>Local storm report, Aug 6, 5:26 PM MDT, 3 hours 36 minutes before
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</html>Special weather statement, Aug 6, 5:34 PM MDT, 3 hours 28 minutes before
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</html>Special weather statement, Aug 6, 5:59 PM MDT, 3 hours 3 minutes before
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</html>The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 6:01 PM MDT | Special Weather Statement | TFX | Toole | 29 min |
| Aug 6, 6:05 PM MDT | Severe Thunderstorm Warning | TFX | Glacier, Toole | 25 min |
| Aug 6, 6:07 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 38 min |
| Aug 6, 6:09 PM MDT | Severe Thunderstorm Warning | TFX | Glacier | 51 min |
| Aug 6, 6:13 PM MDT | Special Weather Statement | TFX | Broadwater | 47 min |
| Aug 6, 6:41 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Lewis and Clark | 19 min |
| Aug 6, 6:45 PM MDT | Severe Thunderstorm Warning | TFX | Glacier, Pondera | 45 min |
| Aug 6, 6:56 PM MDT | Special Weather Statement | TFX | Pondera | 34 min |
| Aug 6, 7:23 PM MDT | Severe Thunderstorm Warning | TFX | Pondera, Teton | 52 min |
| Aug 6, 7:33 PM MDT | Special Weather Statement | TFX | Lewis and Clark | 42 min |
| Aug 6, 7:33 PM MDT | Special Weather Statement | TFX | Pondera | 42 min |
| Aug 6, 7:43 PM MDT | Severe Thunderstorm Warning | TFX | Glacier, Pondera, Teton, Toole | 47 min |
| Aug 6, 8:23 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Teton | 52 min |
| Aug 6, 8:24 PM MDT | Special Weather Statement | TFX | Liberty | 36 min |
| Aug 6, 9:41 PM MDT | Special Weather Statement | TFX | Judith Basin | 34 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2024Every 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; radar from the NEXRAD Level II archive.