The National Weather Service issued a Severe Flood Warning for Citrus, Levy and Marion counties in Florida after the Withlacoochee River at US 41 Dunnellon reached flood stage on September 15. The initial warning covered through 17 September 2026 at 14:00 and was later updated to remain in effect until 22 September 2026 at 14:00. Last update: 22 September 2026
Why the warning matters
The warning indicates that flooding was occurring or was imminent and that water could cover roads and inundate low-lying areas. Motorists were instructed to avoid driving through flooded areas and not to attempt to drive around barricades; residents were advised to follow guidance from the National Weather Service and local authorities. The event affected communities along the river corridor near Dunnellon and carried potential property damage and safety risks.
Cause and river conditions
The river rose to flood stage on September 15 after prolonged rises that began in July. Forecasters attributed the high water levels to excessive hydrilla growth along a 4.5-mile stretch of the river, which has impeded flow. Initial reports indicated the river was expected to remain steady above flood stage at 28.3 feet subsequent monitoring updated the current stage to 28.2 feet with forecasts showing minor flooding continuing during the warning period.
Timing and geographic scope
The notice originally covered the period until 17 September 2026 at 14:00 but was extended and remained active through 22 September 2026 at 14:00, reflecting ongoing elevated stages. The affected counties were specified as CitrusLevy and Marion with the named location for impacts the Withlacoochee River at US 41 near Dunnellon.
Public safety and official guidance
Authorities warned that a Flood Warning means flooding was occurring or imminent and may result in water covering roads and flooding of low-lying areas. Residents were told to call 911 in an emergency and to exercise caution when walking near riverbanks. The National Weather Service advised the public to follow official guidance and to avoid driving around barricades or through floodwater as conditions persisted.
