Severe Thunderstorm Warning for Greene and Jersey Counties in Southwestern Illinois

Alert Details

The National Weather Service in St Louis MO has issued a Severe Thunderstorm Warning for Greene and Jersey Counties in southwestern Illinois. This alert is effective as of 3:56 PM CDT and is scheduled to expire at 5:00 PM CDT on March 15, 2026.

Affected Areas

The warning covers the following regions in southwestern Illinois:

• Greene County
• Jersey County

Specific locations impacted include Jerseyville, Carrollton, White Hall, Grafton, Brighton, Greenfield, Fieldon, Eldred, Otterville, Woody, Old Kane, Kane, Belltown, Berdan, Wrights, Fidelity, Rockbridge, Kemper, and Athensville. This also includes Pere Marquette State Park.

What You Should Do

Residents in the warning area should seek shelter inside a well-built structure immediately and stay away from windows. This storm is capable of producing damaging winds. Because tornadoes can develop quickly from severe thunderstorms, you should be prepared to move to an interior room on the lowest floor of a sturdy building.

Expected Conditions

• Wind: Gusts up to 60 mph are expected.
• Hazard: Radar-indicated severe thunderstorm moving east at 35 mph.
• Impact: Expect damage to roofs, siding, and trees.
• Additional Hazards: While this is a thunderstorm warning, the NWS notes that tornadoes can develop quickly. A Tornado Watch also remains in effect for the region until 8:00 PM CDT.

Timeline

The Severe Thunderstorm Warning is in effect until 5:00 PM CDT. The storm was located near Hardin at 3:56 PM CDT and is progressing eastward through the affected counties.