Thunderstorm Wind in Bollinger County, Missouri

A supercell with a strong downdraft pushed eastward across Bollinger County, causing straight-line wind damage. A tree was downed onto Hwy FF between County Rds 512 and 513. Further east-southeast, part of a barn roof was torn off along Hwy PP south of Hwy FF.

Scattered thunderstorms developed across Southern Missouri during the early to mid afternoon hours on April 16th. These storms became severe with large hail, eventually morphing into a more linear structure with the threat switching over to primarily damaging winds as the storms moved into the Lakes area and Southern Pennyrile of West Kentucky. Warm moist air lifted dew points into the mid-60s during the afternoon hours. Clearing behind morning showers allowed for SBCAPE values to reach 2500J/kg in Southeast Missouri with DCAPE of 900J/kg, 0-6km shear of 35-40kts, and mid-level lapse rates of 7C/km.

Reports from Southeast Missouri were primarily hail based. The largest hail occurred in the town of Advance which had numerous reports of golf ball to tennis size hail and a couple reports of baseball size hail, producing damage. Straight line wind damage was observed with a supercell in Bollinger County, downing a tree and damaging a barn roof.