Heat Advisory Extends Into August 25 for Southeast Texas, Heat Index Up to 109

The National Weather Service office in Houston/Galveston issued a heat advisory at 12:36 a.m. CDT on August 25 that runs until 7 p.m. CDT the same day, citing heat index values as high as 109 across portions of south central and southeast Texas [1]. The advisory covers dozens of areas including inland and coastal Harris, Montgomery, Fort Bend, Brazoria, Galveston Island and Bolivar Peninsula [1].

Sources

1. api.weather.gov · Heat Advisory issued August 25 at 12:36AM CDT until August 25 at 7:00PM CDT by NWS Houston/Galveston TX Aug 25, 2026
2. api.weather.gov · Heat Advisory issued August 24 at 6:02AM CDT until August 24 at 7:00PM CDT by NWS Houston/Galveston TX Aug 24, 2026
3. api.weather.gov · Heat Advisory issued August 23 at 10:57PM CDT until August 24 at 7:00PM CDT by NWS Houston/Galveston TX Aug 24, 2026
4. api.weather.gov · Heat Advisory issued August 22 at 11:23PM CDT until August 24 at 7:00PM CDT by NWS Houston/Galveston TX Aug 23, 2026
5. api.weather.gov · Heat Advisory issued August 22 at 6:32AM CDT until August 23 at 7:00PM CDT by NWS Houston/Galveston TX Aug 22, 2026
6. api.weather.gov · Fire Warning issued August 25 at 2:41AM CDT by NWS Fort Worth TX Aug 25, 2026
7. api.weather.gov · Extreme Heat Warning issued August 25 at 12:51AM CDT until August 25 at 9:00PM CDT by NWS Fort Worth TX Aug 25, 2026
8. api.weather.gov · Heat Advisory issued August 25 at 12:19AM CDT until August 25 at 8:00PM CDT by NWS Shreveport LA Aug 25, 2026
9. api.weather.gov · Extreme Heat Warning issued August 25 at 12:09AM CDT until August 25 at 7:00PM CDT by NWS Norman OK Aug 25, 2026
10. api.weather.gov · Heat Advisory issued August 24 at 9:39PM MDT until August 25 at 9:00PM MDT by NWS El Paso Tx/Santa Teresa NM Aug 25, 2026
11. api.weather.gov · Heat Advisory issued August 24 at 10:33PM CDT until August 25 at 7:00PM CDT by NWS Amarillo TX Aug 25, 2026
12. api.weather.gov · Heat Advisory issued August 24 at 10:23PM CDT until August 25 at 7:00PM CDT by NWS Lake Charles LA Aug 25, 2026

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