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Ended official alertUpdated

Heat Advisory for Houston; Trinity; Madison +30 more

This alert has ended.Kept for recent context. Do not use it as a current warning.

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What you need to know

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What is happening

What: For the Heat Advisory, heat index values up to 109. For the Extreme Heat Warning, dangerously hot conditions with high temperatures between 100 to 104 and heat index values up to 115 expected. Impacts: Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures...

What the bulletin says to do

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. 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. Extreme heat is dangerous, especially for those without reliable shelter. Limit time outdoors during the hottest time of the day, typically from 1 to 7 PM, rest in the shade when possible, and drink plenty of water. Locate nearby cooling centers through local resources or dial 2-1-1 in Texas. Stay cool, stay hydrated, stay informed.

Full official description

Bulletin details

* WHAT...For the Heat Advisory, heat index values up to 109. For the Extreme Heat Warning, dangerously hot conditions with high temperatures between 100 to 104 and heat index values up to 115 expected. * WHERE...Portions of south central and southeast Texas. * WHEN...For the Heat Advisory, until 8 PM CDT this evening. For the Extreme Heat Warning, from 11 AM to 8 PM CDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

Lifecycle record

Official revisions

3 captured
  1. Update

    Heat Advisory issued July 21 at 12:50PM CDT until July 21 at 8:00PM CDT by NWS Houston/Galveston TX

    Official revision
  2. Update

    Heat Advisory issued July 21 at 1:01AM CDT until July 21 at 8:00PM CDT by NWS Houston/Galveston TX

    Official revision
  3. Alert

    Heat Advisory issued July 20 at 1:00PM CDT until July 21 at 8:00PM CDT by NWS Houston/Galveston TX

    Official revision

Source and limitations

Publisher: Weather Alert Watch. Primary source: NWS Houston/Galveston TX. This page reorganizes official fields and does not add a forecast or expand the affected area.

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Methodology and corrections