Public Information Statement
Issued by NWS Twin Cities, MN

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000 NOUS43 KMPX 240011 AAA PNSMPX MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028- 241815- Public Information Statement...UPDATED National Weather Service Twin Cities/Chanhassen MN 711 PM CDT Tue May 23 2017 ...5/16/2017 NORTHWEST WISCONSIN TORNADO UPGRADED TO EF-3... ...THIS TORNADO`S PATH LENGTH APPEARS TO BE THE LONGEST IN WISCONSIN FOR THE MODERN ERA - SINCE AT LEAST 1950... .UPDATE...Newly discovered evidence near Conrath suggests peak winds of around 140 mph, or EF-3 strength. A home was completely destroyed, including all interior walls. Debris remained nearby with substantial tree damage noted as well. In addition, drone footage and additional surveying increases confidence one tornado tracked along the entire damage path. The path length is increased to 83 miles, which is the longest path length in Wisconsin recorded history, at least since modern tornado documentation began in 1950. If this holds true, it would break the record from the 5-10-1953 F4 tornado that tracked 80 miles across Burnett, Pierce, Polk, and St. Croix counties. .OVERVIEW...A powerful thunderstorm tracked across northwest Wisconsin during the early evening of 5/16/2017. The storm produced a strong, long tracked tornado that first developed over southeastern Polk County, 5 miles south of Clayton. It then tracked mostly eastward across southern Barron and southern Rusk counties, into southwestern Price county. The hardest hit areas were just north of Chetek, WI where EF2 damage was found, and in the Conrath area where the EF-3 damage was found. The rest of the path ranged from EF0 to EF1 with mainly tree damage and mostly minor structural damage. .Northwest Wisconsin Tornado... Rating: EF-3 Estimated peak wind: 140 mph Path length /Statute/: 83 miles Path width /Maximum/: 3/4 mile Fatalities: 1 Injuries: 25 Start date: 5/16/2017 Start time: 442 PM CDT Start location: 5 miles south of Clayton, WI (Southeast Polk County) Start Lat/Lon: 45.2529 / -92.1619 End date: 5/16/2017 End time: 706 PM CDT End location: 13 miles southeast of Hawkins, WI (Southwest Price County - WFO DLH area) End_lat/lon: 45.3913 / -90.4975 EF Scale: The Enhanced Fujita Scale classifies tornadoes into the following categories. EF0...Weak......65 to 85 mph EF1...Weak......86 to 110 mph EF2...Strong....111 to 135 mph EF3...Strong....136 to 165 mph EF4...Violent...166 To 200 mph EF5...Violent...>200 mph NOTE: The information in this statement is PRELIMINARY and subject to change pending final review of the event and publication in NWS Storm Data. $$ BORGHOFF/KRAUSE is the U.S. government's official web portal to all federal, state and local government web resources and services.