Thunderstorm Wind in Robertson County, Kentucky

Thunderstorm Wind June 29, 2012 · Robertson County, Kentucky

64 mph

Estimated gust (56 kt)

$90K

Damage as recorded

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

What the National Weather Service wrote

One roof was completely ripped off of a barn with numerous reports of other barns also damaged due to thunderstorm winds. Trees were downed across the county.

The wider storm

A very hot and potentially unstable airmass interacted with northwesterly flow aloft to produce a derecho across northern Illinois. This derecho then moved rapidly east southeast across the Ohio Valley producing widespread straight line wind damage. This rare derecho affected nearly every county in southeast Indiana, northern Kentucky, and southwestern Ohio with severe winds. This caused widespread power outages that lasted several days in some locations. Isolated large hail also occurred with the stronger portions of the system.

Began near Hittville (38.6000, -84.0800).

Source: NOAA Storm Events Database, event 390176. Narratives are written by the National Weather Service forecast office that issued the report.

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