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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 ...
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In Florida, except for Miami-Dade County, the National Weather Services offices around the state would issue a heat advisory if the heat index is expected to reach 108 to 112 degrees.
Specific criteria vary among local Weather Forecast Offices, due to climate variability and the effect of excessive heat on the local population. Typical HI values are maximum daytime temperatures above 105 to 110 °F (41 to 43 °C) for up to three hours per day, with minimum nighttime temperatures above 75 °F (24 °C) (criteria may vary ...
The localized segments provide current weather observations, and high and low temperatures observed since 12:00 a.m. local time for a given city; MinuteCast forecasts, incremental forecasts (pioneered by AccuWeather, Inc. [3]) for the next hour; at-a-glance forecasts for the current day and the day after; extended forecasts (which, in addition ...
In the week beginning May 12, five daytime heat records were broken, including May 15's 98 degrees, which broke a 1992 record by four degrees.
Climate of Florida. Appearance. Köppen climate types of Florida, using 1991–2020 climate normals. The climate of the north and central parts of the U.S. state of Florida is humid subtropical. South Florida has a tropical climate. [ 1 ] There is a defined rainy season from May through October when air-mass thundershowers that build in the ...