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Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >

 

Fast Facts:

  • A bitterly cold air mass moved into the region on Christmas and persisted into the new year, with cold at times reaching dangerous levels.

  • Chicago remained below 20° during the entire calendar days from December 26 through January 6.  The 12 consecutive days being below 20° tied a record of such a stretch for the city (only seen twice before in the winters of 1936 and 1895).  Also a very close stretch was 13 days on Jan 19-31, 1963 but one day had a high of 20°.

  • The coldest part of the air mass that required Wind Chill Warnings was from Dec 31-Jan 2, and included the coldest New Year's Day high temperature on record in Chicago and Rockford and wind chills of -25° to -40°.

  • The high on January 1 was the coldest calendar day high across the area since January 6, 2014.

  • The week from Christmas to New Year's Eve was the second coldest Dec 25-31 on record for Chicago and the coldest for Rockford.

  • Below 0° lows were frequent. The annual normal number of days below 0° for Chicago is 7 and for Rockford is 12, and these were basically reached along during this stretch.


Cold in Perspective

Cold Air Masses
 
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Additional recaps can be found on the NWS Chicago Past Events Page
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