FloodZoneMap.org

Flash Flood — Harrison, MS

Jun 11, 2001

The remnants of Tropical Storm Allison moved over southeast Louisiana and south Mississippi during the night of June 10/11th and intensified. Some thunderstorms reached severe levels and produced damaging winds and short lived, weak tornadoes. Heavy rainfall also accompanied the storms with 5 to 10 inches of rainfall reported overnight. Flash flooding developed in several areas of poor drainage in Harrison and Jackson Counties with roadways, and some structures flooded. An area in Gulfport near

Source: NOAA National Weather Service Storm Events Database (event 5256238). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Harrison, MS

This event is one of many recorded floods in Harrison County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Harrison County flood data →

More Flood Stories

Flash Flood$225K damage

Harrison, MS · Jul 1, 2025

Strong to severe thunderstorms impacted the Mississippi Gulf Coast and adjacent waters on July 1, 2025, as a cold front moved into a hot and humid airmass.

Read the full account →
Flash Flood$30K damage

Harrison, MS · Sep 11, 2024

Hurricane Francine formed as a tropical storm in the Gulf of Mexico on September 9, 2024, and intensified into a Category 2 hurricane before making landfall near Houma, Louisiana, on the morning of September 11.

Read the full account →
Flash Flood$10K damage

Harrison, MS · Jul 1, 2025

Strong to severe thunderstorms impacted the Mississippi Gulf Coast and adjacent waters on July 1, 2025, as a cold front moved into a hot and humid airmass.

Read the full account →
Storm Surge/Tide$10K damage

Southern Harrison County, MS · Sep 11, 2024

Hurricane Francine formed as a tropical storm in the Gulf of Mexico on September 9, 2024, and intensified into a Category 2 hurricane before making landfall near Houma, Louisiana, on the morning of September 11.

Read the full account →