Alert archive / Montana / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 13, NWS Glasgow, MT
NWS Glasgow, MT issued this severe thunderstorm warning at Jun 15, 2025, 12:13 AM MDT for Garfield County, Petroleum County, Montana. It was in force for 62 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 15, 2025, 12:13 AM MDT (06:13 UTC)
- Expired
- Jun 15, 2025, 1:15 AM MDT
- In force
- 62 min
- Issued by
- NWS Glasgow, MT
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Garfield County, MT, Petroleum County, MT
The radar
The Glasgow radar (KGGW), 135 km from the middle of the area, began a volume at 06:13 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 14, 6:16 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 6.2 hours before the alert went out and 137 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
- 263 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 2032 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
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.
In the hours before
Special weather statement, Jun 14, 9:08 PM MDT, 3 hours 5 minutes before
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</html>The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 9:08 PM MDT | Special Weather Statement | GGW | Phillips | 67 min |
| Jun 15, 1:14 AM MDT | Severe Thunderstorm Warning | GGW | Garfield | 61 min |
| Jun 15, 2:07 AM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone | 53 min |
| Jun 15, 5:49 AM MDT | Severe Thunderstorm Warning | GGW | McCone, Prairie | 26 min |
| Jun 15, 6:15 AM MDT | Severe Thunderstorm Warning | GGW | Dawson, Garfield, McCone, Prairie | 60 min |
| Jun 15, 6:49 AM MDT | Severe Thunderstorm Warning | GGW | Garfield | 56 min |
| Jun 15, 5:27 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 63 min |
| Jun 15, 5:47 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 28 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.