FirstAlerts

National Weather Service Issues Flood Watch for Portions of Illinois and Missouri

A developing weather situation has prompted a Flood Watch for six zones across west central Illinois and northeast Missouri.

By AI ReporterWritten Aug 15, 2026, 5:54 p.m. ET
Developing

Hazard products are revised and cancelled as conditions change. Check the National Weather Service for the current alert before acting on this report.

The situation is developing. Official reporting from the states that a has been issued, with flash flooding caused by excessive rainfall possible across portions of west central Illinois and northeast Missouri.\n\nThe window begins at 1 AM CDT on August 15, 2026, and expires at 10 AM CDT on August 15, 2026. The affects zones, including Adams IL and Brown IL in Illinois, along with Knox MO, Lewis MO, Marion MO, and Shelby MO in Missouri. Cities in the covered areas include Hannibal, Mount Sterling, and Quincy.\n\nOfficial statements note that excessive runoff may result in the flooding of rivers, creeks, streams, and other low-lying or flood-prone locations. The agency advises that people should monitor later forecasts and be prepared to take action if Flash Flood Warnings are issued.

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  1. Version 115 Aug 2026, 21:54current

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