Severe Thunderstorm Warning — Williamson County, Texas
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 September 11 at 5:31PM CDT until September 11 at 6:00PM CDT by NWS Austin/San Antonio TX
At 531 PM CDT, a severe thunderstorm was located over Bartlett, or near Granger, moving southeast at 15 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Granger, Bartlett, Granger Dam, Laneport, Hoxie, Sandoval, Hare, and Waterloo.
Effective September 11, 2026 at 6:31 PM ET · Expires September 11, 2026 at 7:00 PM ET
Event Details
Event Type
Severe Thunderstorm Warning
Severity
severe
Issued By
NWS Austin/San Antonio TX
Expires
September 11, 2026 at 7:00 PM ET
Last Checked
23 minutes ago
What To Do
📋 Official NWS Guidance
For your protection move to an interior room on the lowest floor of a building. Continuous cloud to ground lightning is occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning.
Other Active Alerts in Texas
Severe Thunderstorm Warning
Severe Thunderstorm Warning
Severe Thunderstorm Warning
Severe Thunderstorm Warning
Severe Thunderstorm Warning
Severe Thunderstorm Warning
Get Severe Thunderstorm Warning Alerts for Williamson 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 Williamson County, Texas?
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 (23 minutes ago). It's set to expire September 11, 2026 at 7:00 PM ET.
How do I get notified about Severe Thunderstorm Warning alerts for Williamson County?
Download StormCast free on Google Play and set Williamson County, Texas 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.