Heat Advisory — Williamson + 15 more areasHeat Advisory — Williamson + 15 more areas
Current official-source record with preserved meaningful-change history. Texas Hazard Watch organizes the source data without replacing the issuing authority.
NWS severity: Moderate
This is a sorting and attention aid derived only from official source fields. It is not an independent forecast or safety assessment.Show the Official Affected Area
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Record facts
- Event
- Heat Advisory
- Affected Texas areas
- Williamson; Hays; Travis; Bastrop; Lee; Bexar; Comal; Guadalupe; Caldwell; Fayette; Atascosa; Wilson; Karnes; Gonzales; De Witt; Lavaca
- Effective
- 2026-09-11T12:08:00-05:00
- Expires
- 2026-09-11T20:15:00-05:00
- Issuing authority
- NWS Austin/San Antonio TX
Created
New official record added to the monitor.
Official instructions
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Latest official-source information
* WHAT...Temperatures up to 103 and heat index values up to 108
degrees expected.
* WHERE...The I-35 corridor and Coastal Plains.
* WHEN...From noon to 7 PM CDT Saturday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
Meaningful official changes
The complete source history remains preserved. Routine monitoring snapshots and small gauge fluctuations are condensed here for readability.
- First recordedNew official record added to the monitor.
Original source
This record is derived from an official public source. Texas Hazard Watch preserves and organizes it but does not replace the issuing authority.