Heat advisory in effect for South Florida
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The heat index considers the actual temperature and amount of moisture in the air using the dew point or relative humidity.
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Panama City News-Herald on MSNHeat indexes as high as 114 in Panama City prompt advisory as storm brews in Atlantic
The National Weather Service says heat indices as high as 114 are possible in Panama City and issued an advisory. Meanwhile an Atlantic system brews.
With extreme temperatures forecast to soar into the upper 90s over the next three days, residents of southeast Nebraska are urged to take precautions as the heat index rockets to
The National Weather Service issued Extreme Heat Watches and Flood Advisories throughout Illinois. Here's the forecast.