Severe Thunderstorm Warning — Custer 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 7:42PM MDT until August 17 at 7:45PM MDT by NWS Billings MT
The storm which prompted the warning has weakened below severe limits, and has exited the warned area. Therefore, the warning will be allowed to expire.
Effective August 17, 2026 at 9:42 PM ET · Expires August 17, 2026 at 9:52 PM ET
Event Details
Event Type
Severe Thunderstorm Warning
Severity
severe
Issued By
NWS Billings MT
Expires
August 17, 2026 at 9:52 PM ET
Last Checked
1 hour ago
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Get Severe Thunderstorm Warning Alerts for Custer 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 Custer 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 (1 hour ago). It's set to expire August 17, 2026 at 9:52 PM ET.
How do I get notified about Severe Thunderstorm Warning alerts for Custer County?
Download StormCast free on Google Play and set Custer 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.