Major flood event across central U.S. Gulf Coast May 19–June 24, 2026, driven by sustained spring runoff and heavy precipitation. Lower Mississippi River and Louisiana parishes at severe inundation risk.
🌊 OPEN LIVE 3D WEATHER ALERTSA major flooding event is unfolding across the central United States Gulf Coast region, centered near Louisiana's Mississippi River Delta (30.42°N, 89.44°W), from May 19 through June 24, 2026. The Green Flood—named for its timing during late spring runoff season—poses severe inundation and displacement risks to communities across Louisiana, Mississippi, and eastern Texas. Water levels in the lower Mississippi River and its tributaries are rising rapidly due to sustained precipitation and upstream watershed discharge, with the National Weather Service issuing flood warnings for multiple parishes and counties.
Flooding in the Mississippi River Basin results from a convergence of hydrological drivers: heavy spring precipitation across the Ohio and Missouri River watersheds, combined with seasonal snowmelt and saturated soil conditions, creates a compounding discharge signal downstream. The Gulf Coast region's extremely low topography—much of southern Louisiana sits below sea level and relies on levee systems—amplifies inundation risk when river stages exceed design capacity. Climate patterns driving this event likely include a stationary low-pressure system or tropical moisture influx that sustained rainfall over critical source regions for 5–10 days prior to May 19.
Pandita's real-time hyrology simulations integrate NOAA river gauge data, USGS streamflow measurements, and satellite precipitation estimates to visualize water level rise, flow velocity, and inundation extent across the floodplain. NOAA's Advanced Hydrologic Prediction Service (AHPS) stage forecasts are updated every 6 hours, allowing us to model breach scenarios and downstream propagation with high spatial resolution.
The lower Mississippi River system experiences major floods (stages exceeding 50 feet at key cities like New Orleans) approximately once per decade. The 2026 Green Flood event is classified as a moderate–major event based on forecast stages and inundation area. Vulnerable populations include rural communities in flood-prone parishes, low-income neighborhoods in New Orleans and Baton Rouge with limited evacuation resources, and critical infrastructure operators managing ports, refineries, and power plants.
Monitor Pandita Data's real-time Mississippi River flood simulation to track water level forecasts, inundation maps, and evacuation zone updates for your specific parish or county. Sign up for NOAA Alert Weather Radio and Louisiana State Police emergency notifications to receive urgent flood warnings and evacuation orders.