29°21'N / 100°53'W / Altitude 295 m / 16:33 2026/06/17, America/Chicago (UTC-5)
From: 2026/06/17, 15:42
To: 2026/06/18, 07:00
* WHAT...Heat index values up to 112 expected. * WHERE...The Hill Country, Edwards Plateau, and northern Rio Grande Plains. * WHEN...From noon to 8 PM CDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Conditions Thursday will be more extreme than the heat so far this summer. The risk of heat related illnesses will be higher with little time to adjust to the extreme heat.
Val Verde,Val Verde
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.
NWS Austin/San Antonio TX
2026/06/17, 15:42