National Weather Service United States Department of Commerce

Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

       

 

Weather Calculations / Conversions


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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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