The National Weather Service (NWS) St. Louis, Missouri, issued a Flood Warning on September 26, 2026, at 8:42 PM CDT, affecting the Mississippi River at Clarksville and Hannibal. This warning remains active until September 28, 2026, at 4:00 PM CDT. Minor flooding is currently underway in both locations, with specific crest predictions and timelines for water levels to recede below flood stage. The NWS St. Louis provides current watches, warnings, and advisories for Missouri, which can be monitored for real-time updates.
Minor flooding is occurring and is forecast for the Mississippi River at Clarksville, Missouri. The river is expected to crest at 26.0 feet on Saturday morning, September 26, 2026, before water levels are projected to fall below flood stage early Monday morning, September 28, 2026. Similarly, minor flooding is also forecast for the Mississippi River at Hannibal, Missouri. The river at Hannibal is expected to crest at 17.1 feet just after midnight on September 25, 2026, and then fall below flood stage by the evening of September 26, 2026. The Flood Warning for the Mississippi River at Louisiana has been extended, while warnings for Winfield and Saverton have been canceled.
Flood warnings are issued when hazardous weather events, such as significant rainfall or snowmelt, lead to rising water levels that pose a threat to life and property. The Mississippi River, one of the world’s major river systems, has a long history of flooding, impacting communities along its extensive course. Historically, major floods, such as the Great Mississippi Flood of 1927 and the Great Flood of 1993, have caused widespread devastation and prompted significant changes in flood control and management strategies. The U.S. Army Corps of Engineers plays a crucial role in managing the river’s navigation and flood control systems, including an extensive network of levees and dams. Residents in affected areas are advised to stay informed through local news and official weather channels, and to follow any evacuation orders issued by emergency services. Information regarding river levels and forecasts is regularly updated by the National Weather Service, accessible via their official alert system. For broader context on flood preparedness and safety, the Ready.gov website offers comprehensive guidance for individuals and communities.
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