National Weather Service United States Department of Commerce

Snow in the Northern Rockies and Lower Great Lakes; Critical Fire Weather in the Southwest and Southern Plains

Moderate to heavy mountain snow and strong winds are expected across the Northern Rockies. Lake effect snow will continue downwind of the Lower Great Lakes. Gusty winds and dry conditions will result in critical fire weather conditions in the Southwest and Southern Plains Wednesday through Friday. Extremely critical fire weather conditions are expected Thursday in portions of New Mexico. 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:
Enter temperature in degrees F:     Enter humidity in percent:

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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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