Las Vegas, Phoenix, Tucson and all will see high temperatures exceed 100 degrees, and all three will likely tie or break daily record high temperatures. In Texas, cities like Dallas, San Antonio, and Lubbock all be at least 100 degrees.
In total, more than 25 cities could break records Sunday and Monday.
Criteria again, the change in the desert southwest.
Since it is so hot most of the year in the southwest, the NWS offices there is not heat issue recommendations through the desert, only excessive heat.
Office in Las Vegas is that its forecasts for highest and lowest elevations in the contiguous United States: mount Whitney and Badwater basin in Death Valley, respectively.
“Death valley regularly exceeds 115 degrees in the summer but the areas of “mount Whitney “is not,” says Jenn, Varian, NWS meteorologist in Las Vegas. “So, topography, the type of terrain in the West and even the time of year plays an important role in how we issue these warnings excessive heat.”
Several South-Western branch of the NMSS also account for the number of tourists who come to the city and the transient population that is not accustomed to extreme desert heat.
“Many people tend to look for higher ground in an attempt to escape from the heat,” Varian explains. “While you will find relief from triple-digit temperatures, mountains of southern Nevada is still expected above the seasonal average as well. As a consequence, additional precautions must be taken, even if you are in the hills and mountain regions.”
Night temperatures are also important
More than 20 locations can beat the record hot temperatures low Sunday to Tuesday.
The purpose of alerts and warnings is to protect the public and provide guidance about the likelihood of heat-related illnesses, including heat cramps, heat stroke, stroke, and even death.
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