National Weather Service United States Department of Commerce

Fresh Snow and Temperature Outlook Ahead of Christmas Day

If you are looking for fresh snow by Christmas morning or are curious about potential travel disruptions, the best chances for at least 1" of new snowfall early this week exist across the mountainous West, Great Lakes, and Northeast. Otherwise, temperatures this last full week of December will average above normal for much of the lower 48 states. Read More >

Fast Facts

  • A quick-moving weather system brought southwest winds on Thursday morning the 5th gusting to 35-44 mph, and these winds then turned westerly in the afternoon and more northerly later Thursday night.
  • The strong northerly winds into Friday the 6th resulted in rapidly building waves across the southern part of Lake Michigan, reaching an estimated 15+ ft along parts of the northwest Indiana shore, and at least occasionally reaching 10+ ft along the Illinois shore including Chicago.
  • Lakeshore flooding resulted in parts of southern Cook County and northwest Indiana. Some of this was caused damage in northwest Indiana as relayed in media reports.
  • The potential for lakeshore flooding was mentioned in NWS graphics as early as Monday the 2nd, and a Lakeshore Flood Watch was issued Wednesday the 4th. This was upgraded to a Warning for northwest Indiana early Thursday morning and for central and southern portions of the Cook County shore on Thursday evening.

 
 


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