The 7 June 2007
Tornadic Supercell Outbreak in Northern and Central Wisconsin
A strong low
pressure system moved through the western Great Lakes on 7 June 2007,
providing the dynamics for a severe weather outbreak across northeast
Wisconsin. Two supercells produced tornadoes, damaging winds and hail
larger than 5 inches in diameter, damaging or destroying dozens of
buildings and over 14000 acres of forest. One supercell produced a
tornado track over 40 miles long and greater than one half mile wide at
times. This tornado was rated an EF3 on the Enhanced Fujita Scale as it
passed through Langlade County, WI.
This
presentation will provide a brief overview of the environment that lead
to the tornado outbreak, and then focus on the radar characteristics of
the strongest storms as they spawned several tornadoes. In addition,
the impact the storms had on northeast Wisconsin will be discussed and
the large hail and long-track tornado will be placed in historical
context.
Eugene S. Brusky, Jeffrey. K. Last and Phillip G. Kurimski
National Weather Service, Green Bay, WI