Severe Thunderstorm Warning for Adams County IL and Lewis County MO
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NWS St Louis MO issued a Severe Thunderstorm Warning for northwestern Adams County in Illinois and Lewis County in Missouri until 11:30 PM CDT August 7.
Read this weather record in 30 seconds
- Record type
- Severe Thunderstorm Warning
- Affected area
- Adams County IL and Lewis County MO
- Issued
- August 8, 2026
- Issuing authority
- NWS St Louis MO
Storm notices can cover different combinations of wind, hail, lightning, and rainfall. Use the original notice for the hazards and boundaries attached to this specific record.
Record status: publication date is recent, but current status is not stored on this page. Check the issuing agency's live warning service before acting because warnings can be updated, narrowed, or cancelled.
Alert Details
Severe Thunderstorm Warning issued by NWS St Louis MO. Effective from 10:47 PM CDT August 7, 2026 until 11:30 PM CDT August 7, 2026. Alert type code: SVR.
Affected Areas
Northwestern Adams County in west central Illinois and Lewis County in northeastern Missouri. Locations impacted include Monticello, Lewistown, Canton, Meyer, Lima, Ewing, La Grange, Ursa, Mendon, Maywood, Quincy and Fowler. Includes Wakonda State Park and Interstate 172 between exits 15 and 19.
What You Should Do
Seek shelter inside a well-built structure and stay away from windows.
Expected Conditions
At 10:47 PM CDT, a severe thunderstorm was located 17 miles north of Canton, moving south at 45 mph. Hazard includes 60 mph wind gusts and quarter size hail (1.00 inch). Radar indicated.
Timeline
The warning is in effect until 11:30 PM CDT on August 7, 2026.
Original source: NOAA Official Notice ↗
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