Mississippi and Alabama Face Moderate Flash Flooding Risk Friday as Leftover Moisture From Arthur Fuels Efficient Rainfall Producers Near Hattiesburg and Mobile
HATTIESBURG, MISSISSIPPI — South Mississippi and parts of Alabama are under a Moderate Flash Flooding Risk for Friday as residual moisture left behind by Arthur sets the stage for additional thunderstorm development. Forecasters warn that storms forming to the north could become highly efficient rainfall producers if they hold together as they track into South Mississippi.
Moderate Risk Zone Stretches From Hattiesburg to Mobile
The Flash Flooding Risk outlook for Friday places a Moderate risk area across a broad swath of South Mississippi and Southwest Alabama, including:
- Hattiesburg
- Monroeville
- Mobile
A surrounding Slight Risk zone extends outward to include Baton Rouge, Gulfport, Pensacola, and Panama City, while a Marginal Risk covers areas further west and south, including New Orleans.
Leftover Arthur Moisture to Fuel Friday Afternoon Storms
Forecasters indicate that abundant moisture remains in place across the region following Arthur, creating conditions favorable for additional thunderstorms developing to the north on Friday afternoon. Should these storms organize and track into South Mississippi, they have the potential to become very efficient rainfall producers, raising the threat for localized flash flooding.
Futurecast Shows Intense Rainfall Bands by Friday Afternoon
Futurecast model data valid Friday, June 19, 2026 at 3:30 PM shows intense, concentrated rainfall bands developing across the region, with the heaviest activity depicted near:
| Area | Rainfall Intensity |
|---|---|
| Hattiesburg | Heavy, embedded extreme cores |
| Lucedale | Heavy, embedded extreme cores |
| Mobile | Heavy, embedded extreme cores |
| Pensacola | Heavy, embedded extreme cores |
| Wiggins | Moderate to heavy |
| Baton Rouge | Scattered heavy cells |
The futurecast imagery shows multiple areas of embedded heavy rainfall, indicating the potential for training storms capable of producing rapid rainfall accumulation in a short period.
Flash Flooding Remains Primary Hazard Friday
The combination of saturated ground conditions from Arthur’s earlier passage and the potential for efficient, slow-moving rainfall producers has prompted forecasters to highlight flash flooding as the primary hazard heading into Friday afternoon across the Moderate Risk zone.
Residents Urged to Monitor Conditions Through Friday Afternoon
With the heaviest rainfall threat expected to develop and track through the region during the Friday afternoon hours, residents across South Mississippi and Southwest Alabama are encouraged to stay weather-aware as the situation evolves.
Stay tuned for further updates as this flash flooding threat develops throughout the day Friday.