National Weather Service United States Department of Commerce

Severe Thunderstorms and Heavy Rain from the Southern Plains to the Ohio Valley; Wintry Mix in the Northeast

Numerous showers and thunderstorms, some severe, are expected from the southern Plains to the Ohio Valley. The repeating nature of some showers and thunderstorms may lead to isolated flash flooding across the Ohio Valley. An area of freezing rain, with some snow on the northern edge, will cause hazardous travel conditions over portions of New England. Read More >

       

 

Weather Calculations / Conversions


Convert degrees Celsius to degrees Fahrenheit:
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Convert degrees Fahrenheit to degrees Celsius:
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Calculate relative humidity from temperature/dewpoint (deg C):
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Calculate relative humidity from temperature/dewpoint (deg F):
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Calculate heat index from temperature and humidity:
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Calculate heat index from temperature and dewpoint (deg F):
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Calculate heat index from temperature and dewpoint (deg C):
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Calculate wind chill from temperature (deg F) and wind (mph):
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Calculate wind chill from temperature (deg C) and wind (kt):
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Convert pressure from inches to millibars:
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