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Busy Tornado Season

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One year ago today, a tornado outbreak occurred in Minnesota, Iowa and North Dakota with 74 twisters.  Minnesota was hit the hardest with 48 tornadoes, a new state record for the number of tornadoes in a day and this was the largest tornado outbreak during meteorological summer (June to August).  The Alabama Outbreak this year was in April.  16 of the 74 tornadoes were strong to violent, rated EF2 or higher, and 11 of those were in Minnesota and 3 of those were violent EF4’s.  That was the first EF4 in Minnesota since July 25, 2000. 

Wisconsin had a busy tornado season last year as well with 46 tornadoes.  The record is 62 from 2005.  Of those 46 tornadoes, 5 were EF2’s with winds between 111-135 mph, including the Eagle tornado. 

This tornado season is off to a very active start with 26 twisters across the Badger State.  The tornadoes have occurred on only 3 days; April 10 had 15 (record for April), May 22 had 11 and 1 on June 8.  These have all occurred in north-central and western Wisconsin.  The closest twister was in Green Lake County on April 8th. 

Wisconsin’s 30-year tornado average (1981-2010) is 23 so we are already above normal and June is the peak month, but has been quiet so far.  2009 had 16 tornadoes; 2008 had 38; 2007 had 18; 2006 had 13; and 2005 had the record 62.

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Milwaukee, WI

Broken Clouds
65°
Broken Clouds
Precip
40%
Humidity
81%
Wind
S at 7 mph
Alerts
0

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