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ad August 6, 2024 Severe Winds and Tornadoes
National Weather Service United States Department of Commerce

Overview

A surface low pressure system from the Midwest moved east across the area on
Tuesday, August 6, 2024, along a stationary boundary that was draped across the region for the majority of the day. Surface features were supported by an upper level
shortwave trough moving southeast across the region in addition to being underneath the right entrance region of the upper level jet and vorticity maximum. MUCAPE values across the area approached 3000 J/kg with shear values of 30 to 40 knots as the low-level jet pushed north across the area. Strong updrafts were evident with ample moisture of dewpoints in the 70s and 0 to 1 km storm-relative helicity values exceeding 100 m2/s2 in addition to steep low-level lapse rates. Hodographs supported supercell and tornadic potential near the boundary owing to the multiple tornadoes, macrobursts, and strong bowing segments observed during the event. Five EF-1 tornadoes and widespread straight-line wind damage occurred across Northeast Ohio. Over 400,000 residents were left without power, the most significant number since the July 1993 storms. Cuyahoga, Lake, and Geauga Counties were hit especially hard with over half of residents experiencing power outages. A state of emergency was declared for Ashtabula, Cuyahoga, Geauga, Lake, Portage, Summit, and Trumbull Counties.
Image
Mid-level water vapor loop from 8 AM to 8 PM on August 6, 2024. Note the strong shortwave across the Lower Great Lakes region in addition to Tropical Storm Debby spinning off the Southeast Coast. 
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