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Powerful Pacific Storm to Continue Impacting Northern California; Heavy Snow in the Appalachians and Portions of the Northeast

A strong atmospheric river will continue to impact northern California with heavy rain and life-threatening flooding through Friday. Unsettled weather is expected across much of the Northeast and Great Lakes over the next few days, including the likelihood of heavy snow in the central Appalachians and higher elevations of northeastern Pennsylvania and southern New York. Read More >

Winter Storm of January 22-23, 2018

 

A classic "Colorado Low" snowstorm impacted the Upper Mississippi River Valley and upper Great Lakes from Monday, January 22nd through Tuesday,  January 23rd. The snow was exceptionally heavy and wet, with snow to water ratios averaging 7:1. The snow also mixed with freezing drizzle at times across the southeast half of Upper Michigan as well as the Keweenaw Peninsula. Due to the very dense nature of the snow, conditions were very slippery and travel was hazardous through the 22nd into the 23rd.

 

Here's a look at storm summaries from neighboring offices (opens new tabs):

 

NWS Green Bay

NWS La Crosse

NWS Milwaukee

National Weather Service Weather Prediction Center

 

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Regional radar reflectivity and lightning (black and white symbols) from to 7 AM 1/22 to 8:00 AM 1/23 (all EST). 

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