Remnants of overnight convection across Mississippi reintensified along an outflow boundary and cold pool as it moved into North Alabama during the morning hours of Thursday, May 9th. This activity was fairly benign in nature as it pushed across Northwest Alabama, before rapidly intensifying as it moved into North Central Alabama around 12:00 PM CDT. One section of the line intensified across Madison County, and two strong mesovortices develop. One of these features formed near the Research Park area of Huntsville, causing straight-line wind damage. The second, formed in a rural area in far Northern Madison County near the AL/TN border. The second mesovortex produced a brief EF-0 tornado. As the line pushed east, it continued to develop areas of rotation as it moved into Jackson, Marshall, and DeKalb Counties. Two more EF-1 tornadoes were documented in far east Marshall County (near Kilpatrick) and Dekalb County (Peek’s Corner) from brief, but intense mesovortex features that developed with in the squall line as it moved into the Plateau region of Northeast Alabama. Elsewhere across Northeast Alabama and Southern Middle Tennessee, these thunderstorms produced some additional scattered wind damage and a few instances of small hail.
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