Tropical Storm Isaias takes aim at Gulf Coast, forecast to become season's first hurricane

Tropical Depression Nine became Tropical Storm Isaias early Wednesday morning in the southwestern Gulf of Mexico, and forecasters say it is headed for the northern Gulf Coast as a hurricane. The National Hurricane Center's 5 a.m. advisory placed the storm about 580 miles southwest of the mouth of the Mississippi River, moving east northeast near 8 mph with maximum sustained winds near 40 mph.

The forecast is aggressive. The Hurricane Center expects Isaias to reach hurricane strength by Thursday and to become a high end Category 2 storm with 110 mph winds within 48 hours, just before landfall late Friday into early Saturday somewhere between Mississippi and the Florida Panhandle. The National Weather Service office in Tallahassee said the storm could approach major hurricane status, which begins at 111 mph. One Hurricane Center specialist wrote Wednesday morning that it is looking more likely Isaias will be a significant hurricane when it reaches the coast.

Florida is not waiting. Gov. Ron DeSantis declared a state of emergency Tuesday for 25 counties stretching from Escambia at the Alabama line through the Panhandle and Big Bend. Emergency managers are staging sandbags, generators, fuel, flood barriers, boxed water, and shelf stable meals in Tallahassee and the Santa Rosa area. The order activates the National Guard, opens the door to shelters and evacuations, bans price gouging, and stays in effect up to 60 days.

No watches or warnings were posted as of Wednesday morning, but the Hurricane Center said hurricane and storm surge watches will likely go up for part of the northern Gulf Coast later today. The threats go beyond wind: forecasters warn of heavy rain up to six inches in the western Panhandle into Monday, storm surge amplified by a new moon king tide, and isolated tornadoes, especially in southern Alabama on Saturday. Residents from Louisiana to the Florida Panhandle are being told to treat today and Thursday as the preparation window.

If Isaias comes ashore as a hurricane, it will be the first to strike the United States since Milton in 2024, which formed in the same warm waters of the Bay of Campeche now feeding this storm. It is the ninth named storm of the 2026 Atlantic season. One factor working against the storm: forecasters expect strong wind shear to tear at it as it nears the coast. Whether that shear arrives in time to blunt the landfall is the question the Gulf Coast will be watching for the next 72 hours.