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Severe Thunderstorm and Heavy Rainfall Potential Continues

A low pressure center tracking across the Great Lakes and its associated cold front extending across the Southern Plains will focus occasional showers and thunderstorms through tonight. A few of these thunderstorms may become severe alongside heavy rainfall that may cause flash flooding; Portions of the Southern Plains would be the greatest threat for these hazards through tonight. Read More >

Overview

Several severe thunderstorms developed across much of eastern Iowa and northeast Missouri into portions of northwest Illinois on the evening of May 6, 2023.

An initial supercell developed across northwest Missouri during the early afternoon hours from the remnants of morning storms to the west. This storm moved across much of the state, producing a tornado along its track. North of this storm, the strengthening low-level jet helped to fire additional showers and thunderstorms, mainly along and south of Interstate 80. Storms mainly produce hailed around half an inch to one inch (quarter size), with one storm in particular in eastern Van Buren County producing hail up to golf ball size. Through the evening, storms merged and weakened in intensity, but not before producing some wind damage across northern and central Lee County.

Heavy rain also fell from storms as some remained stationary for long periods of time. Most notably, locations north and east of Fairfield, IA recorded over two inches of rain.


WPC Surface Analysis May 6, 2023

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