National Weather Service United States Department of Commerce

Snow Squalls May Impact New Year's Eve Travel from the Great Lakes to the Northeast; Heavy Rain Returns to California

An Alberta clipper will bring lake effect snow downwind of the Great Lakes, with the highest snow totals downwind of Lakes Erie and Ontario. Snow squalls may impact New Year's Eve travel during the evening and overnight hours across parts of the Great Lakes, Ohio Valley, and Northeast. Heavy rain will bring a flash flooding threat for southern California on New Year's Eve into New Year's Day. Read More >

The matrix is designed to help with planning purposes as periods of impactful weather are highlighted. Fuel conditions are not a direct input into the matrix.

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6 hour Forecast Precip

 

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3 hour Forecast Wind Gusts

 

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6 hour Forecast of Chance of Lightning

Chance of Lightning represents the probability of a cloud-to-ground lightning strike being observed within 20 km (roughly 10 miles) of the forecast point.

This product is calibrated with cloud-to-ground lightning strike data, so it may miss intra-cloud lightning that causes thunder.