397
WWUS74 KHGX 210452
NPWHGX

URGENT - WEATHER MESSAGE
National Weather Service Houston/Galveston TX
1152 PM CDT Thu Aug 20 2026

TXZ163-164-176>179-195>200-210>214-226-227-235>238-300-313-335>338-
436>439-211700-
/O.EXT.KHGX.HT.Y.0008.000000T0000Z-260823T0000Z/
Houston-Trinity-Madison-Walker-San Jacinto-Polk-Burleson-Brazos-
Washington-Grimes-Montgomery-Northern Liberty-Colorado-Austin-
Waller-Inland Harris-Chambers-Wharton-Fort Bend-Inland Jackson-
Inland Matagorda-Inland Brazoria-Inland Galveston-Southern
Liberty-Coastal Harris-Coastal Jackson-Coastal Matagorda-Coastal
Brazoria-Coastal Galveston-Matagorda Islands-Brazoria Islands-
Galveston Island-Bolivar Peninsula-
Including the cities of El Campo, Pecan Grove, Galveston, Stowell,
Coldspring, Weimar, Winnie, Huntsville, Mont Belvieu,
Eagle Lake, Wharton, Columbus, Houston, Old River-Winfree, Bryan,
Lake Jackson, Navasota, Cleveland, Palacios, First Colony, Bellville,
Waller, Corrigan, Edna, Friendswood, Pasadena, Trinity, Surfside
Beach, Bay City, Ganado, Sugar Land, Devers, Mission Bend, Caldwell,
Crockett, Shepherd, Brenham, Anahuac, Freeport, Groveton,
Madisonville, Prairie View, Alvin, Dickinson, Hempstead, Baytown, La
Marque, Somerville, League City, Texas City, Dayton, College Station,
Sealy, Pearland, Rosenberg, Brookshire, Clute, The Woodlands, Conroe,
Liberty, Missouri City, Livingston, and Angleton
1152 PM CDT Thu Aug 20 2026

...HEAT ADVISORY NOW IN EFFECT UNTIL 7 PM CDT SATURDAY...

* WHAT...Heat index values 108 to 112.

* WHERE...Portions of south central and southeast Texas.

* WHEN...Until 7 PM CDT Saturday.

* IMPACTS...Hot temperatures and high humidity may cause heat
  illnesses.

* ADDITIONAL DETAILS...Locally higher heat index values are possible,
  especially in Chambers, Liberty, San Jacinto and Polk Counties. If
  forecast heat indices trend higher, then an Excessive Heat Warning
  may be warranted for these counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

To reduce risk during outdoor work, the Occupational Safety and
Health Administration recommends scheduling frequent rest breaks in
shaded or air conditioned environments. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency! Call 9 1 1.

&&

$$