National Weather Service United States Department of Commerce

Major Winter Storm to Impact the Mid-Atlantic and Northeast; Inclement Weather in the Pacific Northwest

A major winter storm is expected to bring heavy snow, strong winds, and coastal flooding across the Mid-Atlantic and Northeast that may cause impossible travel conditions and power outages. Blizzard conditions are possible along the Northeastern Seaboard. Wet weather and strong winds return to the Pacific Northwest and north-central California. Read More >

Storm Summary

This was a near classic northwest flow lake snow event.   There was a 992 mb low that tracked across northern Michigan on the evening of the 09th, that quickly moved northeast into Canada by the morning of the 10th.  This set the stage for the coldest air of the season to come into Michigan on northwest winds.  Temperatures at the start of the day on the 10th were in the lower 30s, by sunrise temperatures fell into the mid 20s and then continued to fall on gusty northwest winds into the lower 20s by evening on the 10th.  It was from mid morning on the 10th through about midnight that most of accumulating snow fell.

Storm total snowfall from the 09th at 7 am through the 11th at 7 am. 

 

Storm Total Snowfall Reports from the

10th through the 11th of December 2019

 

 

Surface Weather Maps and Radar Images for the Same Time

 

December 10 2019  1 PM Surface Map (left) and radar (right)

 

December 10 2019  7 PM Surface Map (left) and radar (right)

 

 

December 11 2019  1 AM Surface Map (left) and radar (right)

 

                                                                     December 11 2019  7 AM Surface Map (left) and radar (right)

 

 

Upper Air Charts (850 mb to show Lake Effect Wind Flow)

850 mb height, temperature and wind for 

                          December 09 2019  7 PM                                               December 10 2019 7 AM)

 

850 mb heights, temperatures and wind

                    December 10,2019 7 PM                                                                                            December 11, 2019 7 AM