Alert archive / Montana / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 93, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Aug 17, 2026, 2:21 PM MDT for Cascade County, Lewis and Clark County, Montana. It was in force for 39 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 17, 2026, 2:21 PM MDT (20:21 UTC)
- Expired
- Aug 17, 2026, 3:00 PM MDT
- In force
- 39 min
- Issued by
- NWS Great Falls, MT
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Cascade County, MT, Lewis and Clark County, MT
The radar
The Great Falls radar (KTFX), 45 km from the middle of the area, began a volume at 20:20 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 office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 2:10 PM MDT | Special Weather Statement | TFX | Cascade | 50 min |
| Aug 17, 2:41 PM MDT | Special Weather Statement | TFX | Teton | 49 min |
| Aug 17, 2:46 PM MDT | Special Weather Statement | TFX | Blaine | 29 min |
| Aug 17, 3:07 PM MDT | Special Weather Statement | TFX | Judith Basin | 38 min |
| Aug 17, 3:09 PM MDT | Special Weather Statement | TFX | Meagher | 51 min |
| Aug 17, 3:23 PM MDT | Special Weather Statement | TFX | Cascade | 52 min |
| Aug 17, 3:39 PM MDT | Special Weather Statement | TFX | Fergus | 51 min |
| Aug 17, 3:47 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Teton | 43 min |
| Aug 17, 4:26 PM MDT | Special Weather Statement | TFX | Cascade | 49 min |
| Aug 17, 4:30 PM MDT | Special Weather Statement | TFX | Fergus | 60 min |
| Aug 17, 4:52 PM MDT | Special Weather Statement | TFX | Gallatin | 53 min |
| Aug 17, 5:39 PM MDT | Special Weather Statement | TFX | Glacier | 36 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2026Every severe thunderstorm warning in 2026
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.