Williamson County, TX Weather Alerts
Every National Weather Service alert issued for Williamson County, Texas, pushed to your phone within moments — county code TXC491, forecast zone TXZ173. Free with StormCast.
Download on Google PlayHow the NWS identifies Williamson County
These are the identifiers the National Weather Service uses when it issues a warning here. StormCast watches TXC491 directly rather than matching on place names, which is why an alert arrives whether you are in Austin or anywhere else in the county.
NWS County Code
TXC491
Forecast Zone
TXZ173
Forecast Office
New Braunfels (EWX)
Radar Station
KGRK
Towns covered in Williamson County
An NWS alert for Williamson County applies to all 16 of these communities. You do not need a separate alert for each one.
River gauges in and around Williamson County
StormCast tracks 12 gauges near Williamson County. Set a flood-stage alert on any of them to get notified before the water reaches you.
- San Gabriel River near Weir, TX
- San Gabriel River at Georgetown South Fork
- North Fork of the San Gabriel River near Georgetown
- Berry Creek near Georgetown
- San Gabriel River at Lake Georgetown
- Brushy Creek at Kenney Fort Blvd nr Round Rock
- Brushy Creek at I-35 Round Rock
- Brushy Creek at Cedar Park
- Willis Creek near Granger
- Brushy Creek at FM 973 nr Coupland
- North Fork San Gabriel River at Ronald Reagan Blvd near Leander 8N
- Brushy Creek at FM 619 near Taylor
Current conditions
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Alert types issued for Williamson County
Tornado
Tornado Warning, Tornado Watch, Tornado Emergency and Severe Thunderstorm Warning.
How tornado alerts work →Flooding
Flash Flood Warning, Flood Watch, Flood Advisory and River Flood Warning.
How flood alerts work →Winter
Winter Storm Warning, Ice Storm Warning, Blizzard Warning and Winter Weather Advisory.
Winter warnings explained →Fire Weather
Red Flag Warning and Fire Weather Watch when conditions favor rapid fire spread.
Fire weather alerts →Heat & Cold
Excessive Heat Warning, Heat Advisory, Freeze Warning and Frost Advisory.
Frost & freeze alerts →Williamson County weather alert questions
Which NWS forecast zone is Williamson County in?
Williamson County, Texas is NWS county code TXC491 and forecast zone TXZ173. Alerts for it are issued by the New Braunfels (EWX) Weather Forecast Office, and the nearest NEXRAD radar is KGRK.
Which towns in Williamson County are covered?
All of them. NWS alerts are issued at the county and zone level, so a warning for Williamson County covers every community inside it, including Austin, Cedar Park, Coupland, Florence, Georgetown, Granger, Hutto, Jarrell, Leander, Liberty Hill, Round Rock, Schwertner, Taylor, Thrall, Walburg and Weir.
Are there river gauges in Williamson County?
Yes — StormCast monitors 12 river gauges in and around Williamson County, including San Gabriel River near Weir, TX, San Gabriel River at Georgetown South Fork, North Fork of the San Gabriel River near Georgetown. You can set a flood-stage alert on any of them and get a push notification when the water rises.
How fast are alerts for Williamson County delivered?
StormCast polls the NWS alert feed every 30 seconds. When a warning is issued for TXC491, the push notification goes out within moments — even with your screen off.