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Thunderstorms developed in two rounds, ahead of an advancing cold front and along a warm front.  Many of the storms were elevated, and their primary impact was large hail, including reports of larger than baseball sized hail in Osceola, Iowa. This supercell along the warm front later went on to produce a tornado that produced damage in Warren and Marion Counties. Based on eyewitness accounts and video evidence, it is likely that this tornado was intermittent and not a fully continuous path. For simplicity, this will be noted as a single path.

Other NWS Office Event Summaries:

NWS Quad Cities 


                                    Photo credit: NWS Damage Survey


Last update: April 6th, 2023 at 10:00am CST.

Photo credit: Jesse Castillo / NWS Employee

Image Image
April 4, 2023 Severe Weather Outlook

Radar imagery at 6:57pm as the storm crossed from Warren to Marion County.

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