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An excessive heat watch is a notice issued by the National Weather Service of the United States when the high temperatures reach anywhere within the range of 95 °F (35 °C) and 100 °F (38 °C) in the continental US.
Advisories have been issued in New York City, Philadelphia, Portland, Oregon, and Washington, D.C. Nearly 200 million people in the U.S. are under some form of heat advisory Skip to main content
The heat began to shift south over the coming days. On June 22, Washington DC crossed the century mark for the first time since 2016, ending the fifth longest streak on record for the city. [15] On July 5, Palm Springs, California reached 124 °F (51 °C), breaking the record for the city's highest temperature. [16]
The threshold for a heat advisory in the local Tri-State area, including Washington County and Franklin County, Pa., is a 100 degree heat index for two or more hours, said meteorologist Craig ...
A heat advisory is a notice issued by the National Weather Service of the United States. Local offices often have their own criteria. High values of the heat index are caused by temperatures being significantly above normal and high humidities, and such high levels can pose a threat to human life through conditions such as heat stroke. [1]
From Thursday to Friday, the number of people under a heat advisory rose from 180 to 184 million and the number of people under a flood warning or watch dropped from 17 to 10 million.
More than 100 million people were put on heat alerts, and over 85% of the country had temperatures at or above 90 °F (32 °C). A man died in Dallas County, Texas, and a heat emergency was triggered in Washington DC due to temperatures over 95 °F (35 °C), on the weekend of July 23–24. This extreme heat severely intensifies drought conditions.