Thunderstorm Wind in Massac County, Illinois

Thunderstorm Wind August 15, 2024 · Massac County, Illinois

75 mph

Estimated gust (65 kt)

$5K

Damage as recorded

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Multiple trees were downed in the Joppa area including a tree on Portland Rd northwest of town as a thunderstorm moved southeastward through the area.

The wider storm

Isolated late afternoon storms morphed into a fairly small mesoscale convective system that surged southeastward through Southwestern Illinois. MLCAPE was 3000 J/kg, decreasing to 2000 J/kg for the evening. Effective bulk shear was 30 kts. A localized swath of significant wind damage occurred in portions of Southwestern Illinois with the most concentrated area of wind damage near Karnak. Other areas receiving wind damage were Gorham, Dongola, Cypress, and Joppa.

Began near Hillerman (37.2242, -88.8765).

Source: NOAA Storm Events Database, event 1209042. Narratives are written by the National Weather Service forecast office that issued the report.

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