October 26, 2010 Squall Line and Embedded Tornadoes
A very intense area of low pressure pushed east through the Great Lakes region,
with a strong cold front moving through the Ohio Valley. This led to the
development of a squall line, which moved through the NWS ILN warning area
during the mid-day and afternoon hours.
The squall line produced widespread wind gusts to 50-60 MPH, with some
locations recording winds as high as 70-80 MPH. In addition, the strong
wind shear associated with the weather system created a favorable environment
for the development of tornadoes along the squall line. The most widespread damage
occurred when a supercell collapsed over eastern Hamilton County, causing a severe
bow echo to form within the squall line (see radar loop below). Peristent rotation
developed within the bow echo, which caused a long-track swath of damaging wind
and occasional tornadoes across a corridor 5-10 miles south of I-71 from northern Clermont County
to southeast Franklin County, and continuing into central Licking County.
As of Friday, October 29, the majority of the storm damage has been assessed,
with public information statements filed. Full details of the event, including
tornado tracks and pictures, are being posted to the pages linked below.
Updates to these pages will continue into the first week of November, as
the remainder of the information is able to be made available.