Alert archive / Montana / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 37, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jun 21, 2024, 6:22 PM MDT for Cascade County, Chouteau County, Judith Basin County, Montana. It was in force for 53 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
- Jun 21, 2024, 6:22 PM MDT (00:22 UTC)
- Expired
- Jun 21, 2024, 7:15 PM MDT
- In force
- 53 min
- Issued by
- NWS Great Falls, MT
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Cascade County, MT, Chouteau County, MT, Judith Basin County, MT
The radar
The Great Falls radar (KTFX), 53 km from the middle of the area, began a volume at 00:24 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 |
|---|---|---|---|
| Jun 21, 12:39 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 0.4 hours before the alert went out and 318 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.
- Mixed-layer CAPE
- 248 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 1368 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.0
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 6:08 PM MDT | Special Weather Statement | TFX | Glacier | 37 min |
| Jun 21, 6:26 PM MDT | Special Weather Statement | TFX | Chouteau | 34 min |
| Jun 21, 6:29 PM MDT | Severe Thunderstorm Warning | TFX | Blaine | 46 min |
| Jun 21, 6:43 PM MDT | Special Weather Statement | TFX | Glacier | 47 min |
| Jun 21, 7:00 PM MDT | Special Weather Statement | TFX | Fergus | 30 min |
| Jun 21, 7:09 PM MDT | Special Weather Statement | TFX | Judith Basin | 36 min |
| Jun 21, 7:31 PM MDT | Special Weather Statement | TFX | Fergus | 44 min |
| Jun 21, 8:07 PM MDT | Special Weather Statement | TFX | Judith Basin | 38 min |
| Jun 21, 8:38 PM MDT | Special Weather Statement | TFX | Judith Basin | 52 min |
| Jun 21, 9:02 PM MDT | Special Weather Statement | TFX | Wheatland | 43 min |
| Jun 21, 9:52 PM MDT | Special Weather Statement | TFX | Fergus | 23 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.