Four Brief Tornadoes Across Northeast Wisconsin on July 9, 2013

Scattered thunderstorms moved across portions of Wisconsin during the afternoon and early evening of July 9, 2013. These mini-supercells produced four brief tornadoes as well as a couple of funnel clouds in central and northeast Wisconsin. Below is a preliminary map of the tracks of the tornadoes from these storms (subject to change as additional information becomes available):

Map of tornado locations on July 9, 2013 - Preliminary

 

The first tornado touched down several miles south of Irma in Lincoln County and produced minor damage. Another tornado formed shortly after the first over western Langlade County. Both tornadoes were rated EF0 on the Enhanced Fujita scale.

Radar reflectivity and velocity from NWS Green Bay radar at 3:36 PM during the western Langlade County tornado

 

The third tornado of the afternoon was observed about 15 minutes before 6 PM in Portage County near the town of Bancroft in an open field. No damage was reported and it was rated an EF0.

 

The fourth tornado occurred in southeast Oconto County beginning at 7:50 PM. It skipped along a path about 50-100 yards wide and 1.5 miles long. This tornado took down powerlines and snapped and uprooted several trees. In addition, minor roof damage was reported on a few homes and a trailer was blown over before the tornado dissipated shortly before 7:55 PM. It was classified as an EF1 by an NWS survery team with a top wind speed of 95 mph.

Radar reflectivity and velocity from NWS Green Bay radar at 7:50 PM

Damage from Oconto County tornado

 

Damage from Oconto County tornado

Damage from Oconto County tornado

 

The National Weather Service in Green Bay would like to thank all of our  trained spotters, media partners, and local officials for their help during the event. We received numerous reports to the office; including several pictures and videos submitted on social media. We appreciate the dedication of our spotters. If you are interested in becoming a trained NWS storm spotter, please visit: www.weather.gov/grb for local SKYWARN information.

 



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