Severe Thunderstorm Warning issued September 20 at 6:24PM CDT until September 20 at 7:00PM CDT by NWS St Louis MO

**Severe Thunderstorm Warning issued September 20 at 6:24PM CDT until September 20 at 7:00PM CDT by NWS St Louis MO**

At 624 PM CDT, a severe thunderstorm was located 7 miles north of Brownstown, or 10 miles northeast of Vandalia, moving southeast at 30 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees.

Locations impacted include... Wrights Corner, Brownstown, Avena and St. Elmo.

This includes Interstate 70 in Illinois near exit 76.

**What You Should Do:**

Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail.

Tornadoes can develop quickly from severe thunderstorms. Seek shelter immediately in an interior room on the lowest floor of a well-built structure.

**Alert Details:**

- **Severity:** Severe

- **Urgency:** Immediate

- **Issued by:** NWS St Louis MO

- **Effective:** Sep 20, 2026 6:24 PM UTC

- **Expires:** Sep 20, 2026 7:00 PM UTC

*This alert was automatically distributed from the National Weather Service via the IPAWS All-Hazards Information Feed.*