Flash Flood in Jersey County, Illinois

Flash Flood August 12, 2019 · Jersey County, Illinois

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

What the National Weather Service wrote

Up to 4 inches of rain fell in less than 5 hours causing flash flooding. Numerous roads were flooded and several cars were stuck in high water. No injuries were reported.

The wider storm

Elevated convection developed in response to low level moisture convergence just north of a slowly retreating warm front. With very high precipitable water values in excess of 2 inches, this created very heavy rainfall rates as the storms trained over the same locations for over 5 hours. This caused flash flooding in a number of locations.

Began near Grafton (38.9700, -90.4500).

Source: NOAA Storm Events Database, event 851060. Narratives are written by the National Weather Service forecast office that issued the report.

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