National Weather Service meteorologist Timothy Cady told Houston Public Media that the temperature will feel closer to 115 degrees and reminded Texans not to take the threat of heat-related illness lightly. In the Houston/Southeast Texas area, triple digit temperatures are expected throughout the week and a heat advisory is in effect in the area until Monday evening. A heat warning is issued when “heat index temperature is expected to be 105 or higher for at least 2 days and nighttime air temperatures will not drop below 75 degrees.” “The general rule of thumb for this Advisory is when the maximum heat index temperature is expected to be 100 or higher for at least 2 days, and nighttime air temperatures will not drop below 75 ,” the NWS explains. The high temperatures for that region through Saturday will range from the high 90s to about 109 degrees with overnight heat index values in the 90s.Īccording to the National Weather Service, a heat advisory is issued within 12 hours “of the onset of extremely dangerous heat conditions.” In South Texas, the NWS for Brownsville and the Rio Grande Valley issued a heat advisory for Monday with heat index temperatures expected to be in the 110s. The heat advisory extends as far south as Temple and Hearne and northward to Sherman and east to Paris, according to the NWS map. The DFW area won’t see a high temperature lower than 100 degrees until Saturday, according to current forecasts. Heat-index values there will be between 105 and 110 degrees, the NWS said. In North Texas Fort Worth/Dallas area is also under a heat advisory until Tuesday evening. "We’re looking at least five, maybe six more days of this triple-digit heat here at Midland before pattern breaks and we get some cooler temperatures in here," he said. Meteorologist Brian Curran with the National Weather Service in Midland told Marfa Public Radio that the region’s record for the number of consecutive days with temperatures above 100 degrees will likely be broken on Thursday.
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