The World's Getting So Hot, Scientists Needed a New Color

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The World's Getting So Hot, Scientists Needed a New Color
Weather HazardsHeat ExhaustionExtreme Weather
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There's a new threat category beyond red to indicate extreme, dangerous heat.

On Earth Day, the National Weather Service and the Centers for Disease Control and Prevention teamed up to announce a new heat risk system to better communicate the severity of hot weather. The color-coded system added magenta, a fifth-tier of heat severity, beyond red, to communicate extreme heat “rare and/or long-duration extreme heat with little to no overnight relief,” according to the Associated Press.

” According to the AP, the red alert is used when a day is within the 5% of hottest days for a given area at a certain time of year; the alert is heightened to magenta when other factors, such as the duration of the heat wave, come into play. A version of the heat risk map has been used in the western United States, but now an updated version will be deployed nationwide.

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