In Texas, the average daily high temperatures have increased by 2.4 degrees — 0.8 degrees per decade — since 1993, according data from the National Oceanic and Atmospheric Administration.
FOX 4 Weather Meteorologist Evan Andrews talks about the dangerous heat index for Tuesday and an excessive heat warning that's in effect for North Texas.and threaten to bring record highs to the state before they are expected to expand to other parts of the U.S. during the coming week, putting even more people at risk.
A heat dome occurs when stationary high pressure with warm air combines with warmer than usual air in the Gulf of Mexico and heat from the sun that is nearly directly overhead, Texas State Climatologist John Nielsen-Gammon said. "One thing that is a little unusual about this heat wave is we had a fairly wet April and May, and usually that extra moisture serves as an air conditioner," Nielsen-Gammon said. "But the air aloft is so hot that it wasn’t able to prevent the heat wave from occurring and, in fact, added a bit to the humidity."
The heat comes after Sunday storms that killed three people and left more than 100,000 customers without electricity in both Arkansas and Tennessee and tens of thousands powerless in Georgia, Mississippi and Louisiana, according toExtreme heat can be particularly dangerous to vulnerable populations such as children, the elderly, and outdoor workers need extra support.
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