GULF COAST, Florida — A slow-moving tropical disturbance currently unfolding along the Florida Panhandle is expected to bring heavy rainfall and the risk of localized flash flooding across parts of the Gulf Coast this week, regardless of whether it intensifies into a tropical depression or tropical storm, according to the National Hurricane Center on Tuesday, July 16.
Invest 93L, a broad low-pressure system, remains disorganized but is already generating clusters of showers and thunderstorms, primarily south of its center, near Panama City. As the system continues tracking westward, forecasters say it may re-emerge over the northeastern to north-central Gulf of Mexico, potentially nearing the Louisiana coastline by Thursday.
Tropical formation possible before landfall
According to the 2 p.m. ET forecast update from the hurricane center, if Invest 93L shifts far enough offshore, conditions in the Gulf could support further development. A tropical depression remains possible within the next 48 hours before the system moves inland by the end of the week.
The forecast underscores the potential for significant rainfall, particularly across parts of Florida through Wednesday, with flooding threats expanding into the north-central Gulf Coast, including southeast Louisiana and coastal Mississippi, starting late Wednesday and lasting through Friday.
The National Weather Service in New Orleans has issued alerts for locally heavy downpours capable of triggering flooding across southern Louisiana, where rainfall totals could exceed 10 inches (254 mm) over the next several days.
Threat of storm surge and gusty winds in Louisiana and Mississippi
AccuWeather meteorologists predict a possible tropical depression may make landfall in southeastern Louisiana by Thursday afternoon, carrying with it intense rain, a storm surge of 1 to 3 feet, and wind gusts between 40 and 60 mph (64–97 km/h). These effects could worsen if the system strengthens into a named storm prior to landfall.
As of now, Invest 93L holds a 40% chance of tropical development within the next 48 hours and a similar 40% chance across the next seven days.
If the system intensifies into a tropical storm, it will be named Dexter, the next in line for the 2025 Atlantic hurricane season.
Understanding hurricane development
Hurricanes originate over warm tropical waters, forming when ocean temperatures rise above 80°F (27°C). Thunderstorm clusters consolidate and spin into a tropical wave, potentially evolving into a tropical depression. When sustained winds reach 39 mph (63 km/h), it becomes a tropical storm, and once they hit 74 mph (119 km/h), it is officially designated as a hurricane.
Tracking the potential path of Invest 93L
Forecast models — often referred to as “spaghetti models” — show a range of possible storm paths, but these do not reflect the full impact zone. The center of circulation may deviate from the model consensus up to 33% of the time, meaning areas outside the cone should remain alert.
The hurricane center bases its forecasts only on the top-performing models, though a variety of less reliable projections also circulate online.
New Orleans, Panama City, southeastern Louisiana, and coastal Mississippi should remain on watch through Friday as the storm system continues to evolve over the Gulf of Mexico.
