The October 2010 Mega Storm!

A new record was set on October 26, 2010, for the lowest air pressure in a central United States storm system.  The massive storm that moved across the region had a minimum central pressure of 28.21" or 955.2 mb (equivalent to the minimum pressure of a Category 3 hurricane) over northern Minnesota near Big Fork.  This is lower than the pressure associated with the Blizzard of 1978 near Cleveland, OH.  This is also lower than the March 1993 Superstorm (aka "The Storm of the Century") and the "Witch of November" storm that sank the Edmund Fitzgerald in 1975.

Weather map mid-day October 26 (click for larger view):
Weather map

A new Wisconsin low pressure record was also set with this storm.  The city of Superior recorded a lowest pressure 28.39" (961.3 mb) on October 26, 2010.

The intense storm produced wind gusts over 60 mph across Wisconsin on October 26 into early on October 27.   Highest gusts across northeast and central Wisconsin included 76 mph in Sherwood (Calumet Co.), 68 mph in Algoma (Kewaunee Co.), 61 mph in Wausau and 60 mph in Rhinelander.  In addition, a tornado was reported in Racine County on the morning of October 26.


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