Heavy Rain in Davis County, Iowa

Heavy Rain September 17, 2022 – September 18, 2022 · Davis County, Iowa

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

What the National Weather Service wrote

A 24 hour rain total of 3.30 inches.

The wider storm

A shortwave trough supplied enough moisture and weak lift to sustain non sever convection through much of the morning of September 17th. By evening a secondary lobe of low pressure lifted into Iowa, enhancing convective development. MLCAPE over 2000 J/kg, curve hodographs, and steep mid level lapse rates supported large hail development. Convection lasted much of the evening and overnight across southern Iowa with several of the multicell storms producing severe hail. In addition, storms produced pockets of heavy rain with area receiving three to five inches of rain.

Began near Ash Grove (40.8300, -92.5600).

Source: NOAA Storm Events Database, event 1055602. Narratives are written by the National Weather Service forecast office that issued the report.

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