Lightning in Massac County, Illinois

Lightning July 18, 2025 · Massac County, Illinois

$15K

Damage as recorded

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

What the National Weather Service wrote

Lightning struck a barn on Mermet Rd, which resulted in a fire that fully engulfed the barn and burned it down.

The wider storm

A surface boundary was positioned west to east across the Quad State during the early afternoon with convective activity increasing with daytime heating. Scattered convection primarily occurred south of the boundary mid to late afternoon. MLCAPE reached 2000J/kg but effective bulk shear was very limited. Precipitable water values over 2 allowed for torrential rainfall rates. Training storm occurrence was limited, leaving flash flooding south of Harrisburg as the one flood report out of Southern Illinois.

Began near Round Knob (37.2579, -88.7667).

Source: NOAA Storm Events Database, event 1304272. Narratives are written by the National Weather Service forecast office that issued the report.

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