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This map highlights locations across the continental United States where temperatures exceeded calendar day records, according to the Southeastern Regional Climate Center. For more CNN news and ...
Maps show where late-summer heat wave will impact millions in U.S. A heat wave was expected to bring record-high temperatures to the midwestern United States this week before spreading to the East ...
The heat index (HI) is an index that combines air temperature and relative humidity, in shaded areas, to posit a human-perceived equivalent temperature, as how hot it would feel if the humidity were some other value in the shade. For example, when the temperature is 32 °C (90 °F) with 70% relative humidity, the heat index is 41 °C (106 °F ...
Minimum temperature map of the United States from 1871–1888 Maximum temperature map of the United States from 1871–1888. The following table lists the highest and lowest temperatures recorded in the 50 U.S. states, the District of Columbia, and the 5 inhabited U.S. territories during the past two centuries, in both Fahrenheit and Celsius. [1]
On May 21, 2022, heat became prevalent in the Mid-Atlantic, resulting in a near record hot Preakness Stakes horse race, with Baltimore and Philadelphia having temperatures of 95 °F (35 °C), Washington DC at 92 °F (33 °C), and New York City at 90 °F (32 °C). [6] This heat persisted into May 22, when Dulles International Airport hit 91 °F ...
The HeatRisk map for the United States on June 17, 2024. The measure takes into account several factors including heat, air quality, and how unusual the temperature is for the location at this ...
The heat index -- what temperature it feels like with humidity -- soared to a scorching 115 degrees in Chicago on Tuesday. Chicago's actual temperature hit 99 degrees, breaking the city's daily ...
An excessive heat warning is a notice issued by the National Weather Service of the United States within 12 hours of the heat index reaching one of two criteria levels. In most areas, a warning will be issued if there is a heat index of at least 105 °F (41 °C) for more than three hours per day for two consecutive days, or if the heat index is greater than 115 °F (46 °C) for any period of time.