Forecasters track developing Gulf storm Isaias ahead of potential weekend hurricane landfall
The National Hurricane Center expects Tropical Depression Nine to strengthen into Tropical Storm Isaias and reach hurricane strength before making landfall along the northern Gulf Coast.
Storm development in the Gulf
Forecasters at the National Hurricane Center are monitoring Tropical Depression Nine as it gathers strength in the western Gulf of Mexico. The system, previously tracked under the designation AL92, is producing increased convective thunderstorm activity across the Bay of Campeche. Atmospheric models indicate a 90% probability that the disturbance will organize into a named tropical storm on Wednesday, taking the Spanish name Isaias, which was last used in the 2020 Atlantic season. A National Oceanic and Atmospheric Administration Gulfstream aircraft collected atmospheric data over the Gulf on Tuesday afternoon, with Air Force reconnaissance flights scheduled to fly directly into the circulation on Wednesday. Warm water temperatures in the central Gulf, hovering between 28°C and 30°C, will provide fuel for steady strengthening as the system tracks northward away from northern Mexico.
Forecast track and landfall uncertainty
The forecast trajectory carries the system across the central Gulf before it executes a turn toward the northern coastline. Computer models, including Google DeepMind's WeatherNext 3, indicate that the system will likely reach peak strength between Thursday and Friday, with potential intensity ranging from Category 1 to upper hurricane classifications. National Hurricane Center projections show a possible landfall as a Category 2 hurricane with 100 mph winds near New Orleans or between Biloxi, Mississippi, and Seaside on the Florida Panhandle. Forecasters note that steering patterns remain fluid as an upper-level disturbance approaches the region.
Senior hurricane specialist John Cangialosi described the challenges in predicting the precise arrival of the storm.
There is significant uncertainty in where the system makes the northeast turn and how fast it moves toward the coast.
- NOAA Gulfstream samples environment around Tropical Depression Nine in the Bay of Campeche.
- Air Force reconnaissance investigates system as it develops into Tropical Storm Isaias.
- Storm strengthens over central Gulf waters measuring 28°C to 30°C.
- System nears hurricane strength and approaches the northern Gulf Coast.
- Landfall projected between southeast Louisiana and the Florida Panhandle.
- System tracks inland across the Southeast and weakens into a post-tropical cyclone.
Regional hazards and preparations
Coastal and inland communities across the Southeast are preparing for widespread rainfall, storm surge, and severe weather risks later in the week. Southeast Louisiana is projected to receive between 2 and 6 inches of rain through Sunday, with localized spots across the wider northern Gulf Coast potentially recording up to 10 inches. The National Weather Service has issued small craft advisories from eastern Louisiana to northeastern Florida alongside preliminary flood alerts. In addition to freshwater flooding, meteorologists warn that interaction with the subtropical jet stream could produce rotating storms and isolated tornadoes across Alabama and Georgia late Saturday, along with waterspouts between Mobile, Alabama, and the Florida Big Bend. Residents have been advised to inspect storm drains, clear gutters, and check household hurricane supply kits before conditions deteriorate.
The National Hurricane Center outlined the geographic scope of expected impacts in its advisory statements.
Regardless of development, heavy rainfall and associated flooding impacts could occur over portions of the northern Gulf Coast, the southeastern United States, and Florida later this week and this weekend.
Context in a delayed Atlantic season
The emergence of a potential hurricane in early October marks an unusually late milestone for the Atlantic hurricane season, which runs from June 1 through November 30. Strong atmospheric wind shear driven by a developing El Niño pattern disrupted storm formation throughout August and September, traditionally the most active months on the calendar. In the modern observation record dating to World War II, no Atlantic season has extended this late into October without producing a hurricane. Federal forecasting agencies had projected between 13 and 19 named storms in May before revising their outlook to 18 named storms and up to nine hurricanes in August. The prospective landfall comes after a 2025 season that saw zero hurricanes strike the United States, contrasting with 2024 when Hurricanes Helene and Milton caused $113 billion in damage.
