Illinois, Missouri Flood Watch | Effective 05/18/2026 11:56
* WHAT...Flash flooding caused by excessive rainfall continues to be<br />
possible.
* WHERE...Portions of southwest Illinois, including the following<br />
areas, Calhoun IL and Jersey IL and Missouri, including the<br />
following areas, Audrain MO, Monroe MO, Pike MO and Ralls MO.
* WHEN...Through Tuesday afternoon.
* IMPACTS...Excessive runoff may result in flooding of rivers,<br />
creeks, streams, and other low-lying and flood-prone locations.
* ADDITIONAL DETAILS...<br />
- Potential rainfall amounts of 2 to 4 inches, with localized<br />