Severe Thunderstorm Warning — Garfield County, Montana
A thunderstorm capable of producing damaging winds of 58+ mph and/or 1-inch hail has been detected.
Current Status
⛈️ Active: Severe Thunderstorm Warning
Severe Thunderstorm Warning issued August 17 at 6:19PM MDT until August 17 at 6:45PM MDT by NWS Glasgow MT
At 618 PM MDT, a severe thunderstorm was located 12 miles east of Hillside, or 41 miles southwest of Circle, moving southeast at 40 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. Locations impacted include... Hillside and Crow Rock.
Effective August 17, 2026 at 8:19 PM ET · Expires August 17, 2026 at 8:45 PM ET
Event Details
Event Type
Severe Thunderstorm Warning
Severity
severe
Issued By
NWS Glasgow MT
Expires
August 17, 2026 at 8:45 PM ET
Last Checked
2 hours ago
What To Do
📋 Official NWS Guidance
For your protection move to an interior room on the lowest floor of a building.
Also In Effect For
This same Severe Thunderstorm Warning also covers:
Other Active Alerts in Montana
Flood Advisory
Severe Thunderstorm Warning
Severe Thunderstorm Warning
Severe Thunderstorm Warning
Severe Thunderstorm Warning
Severe Thunderstorm Warning
Get Severe Thunderstorm Warning Alerts for Garfield County
StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
Frequently Asked Questions
What does a Severe Thunderstorm Warning mean for Garfield County, Montana?
A thunderstorm capable of producing damaging winds of 58+ mph and/or 1-inch hail has been detected.
Is this Severe Thunderstorm Warning currently active?
Yes — this alert is active as of our last check (2 hours ago). It's set to expire August 17, 2026 at 8:45 PM ET.
How do I get notified about Severe Thunderstorm Warning alerts for Garfield County?
Download StormCast free on Google Play and set Garfield County, Montana as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
What other areas does this alert cover?
This same Severe Thunderstorm Warning is also in effect for Prairie County.