CNN —Phoenix is supposed to be hot, but the severity of the upcoming heat wave will bring a level of heat that will test even heat-hardy places and do so for longer durations than have ever been observed before. The latest heat wave is really an extension of a continuous heat wave, which has never really stopped and has been affecting the South since mid-June. The duration of the current heat wave has meteorologists and climate scientists concerned. Forty high temperature records and more than 50 record high minimum temperatures could fall over the weekend across the US. With temperatures staying hot overnight, heat stress and heat exhaustion will set in much faster.

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Persons: Bernadette Woods Placky, ” Placky, Placky Organizations: CNN, Southwest, Climate, National Weather Service, Las Locations: South Texas, South Florida, Phoenix, California, Florida, Miami, Houston, San Antonio, Texas, Las Vegas