Houston weather: Excessive Heat Warning continues for Southeast Texas

Texas is ground zero for heat across the entire United States today.

For the fourth day in a row, Southeast Texas is under an Excessive Heat Warning as temperatures will soar to near 100 degrees with dangerous heat index values near 115!

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The extreme heat is being caused by the combination of a strong area of high pressure, also known as a "heat dome" that has been parked over the Rio Grande Valley along with outrageous dew point values. 

The dew point is a measure of how much moisture is in the air and numbers of 80 degrees or above are about as high as it gets in our area. It will feel like a steam bath all day with heat exhaustion and even heat stroke a real concern.

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High temperatures statewide will be extreme today and tomorrow with exceeding 100 degrees almost everywhere and some places over 110 not counting the heat index!

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Please continue to practice heat safety by staying in the air conditioning, avoiding strenuous activity outdoors, closely watching children and the elderly and making sure pets have a cool place to go with plenty of water.