Alert archive / Montana / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 30, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jun 13, 2025, 4:14 PM MDT for Fergus County, Montana. It was in force for 20 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 13, 2025, 4:14 PM MDT (22:14 UTC)
- Expired
- Jun 13, 2025, 4:34 PM MDT
- In force
- 20 min
- Issued by
- NWS Great Falls, MT
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Fergus County, MT
The radar
The Billings radar (KBLX), 164 km from the middle of the area, began a volume at 22:16 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 13, 1:03 PM MDT | Severe Thunderstorm Watch | SPC | 10 hr |
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 10.2 hours before the alert went out and 471 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
- 215 J/kg
- Mixed-layer CIN
- -234 J/kg
- Mixed-layer LCL
- 1418 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 195 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 6:06 PM MDT | Special Weather Statement | TFX | Broadwater | 24 min |
| Jun 12, 6:47 PM MDT | Special Weather Statement | TFX | Lewis and Clark | 43 min |
| Jun 12, 8:10 PM MDT | Special Weather Statement | TFX | Cascade | 20 min |
| Jun 13, 3:08 AM MDT | Dense Fog Advisory | TFX | Blaine, Chouteau, Fergus, Glacier, Hill, Liberty and 3 more | 8 hr |
| Jun 13, 11:45 AM MDT | Special Weather Statement | TFX | Judith Basin | 45 min |
| Jun 13, 11:49 AM MDT | Special Weather Statement | TFX | Jefferson | 26 min |
| Jun 13, 12:14 PM MDT | Special Weather Statement | TFX | Jefferson | 31 min |
| Jun 13, 1:09 PM MDT | Special Weather Statement | TFX | Broadwater | 36 min |
| Jun 13, 1:16 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater, Gallatin | 29 min |
| Jun 13, 1:39 PM MDT | Severe Thunderstorm Warning | TFX | Broadwater, Gallatin, Meagher | 36 min |
| Jun 13, 1:59 PM MDT | Special Weather Statement | TFX | Wheatland | 16 min |
| Jun 13, 3:29 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 46 min |
| Jun 13, 3:40 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Hill | 19 min |
| Jun 13, 4:07 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Hill | 38 min |
| Jun 13, 4:20 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Hill | 40 min |
| Jun 13, 5:29 PM MDT | Special Weather Statement | TFX | Hill | 61 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2025Every severe thunderstorm warning in 2025
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.