Hurricane Isaiah strengthened during the early hours of Friday, October 9, reaching maximum sustained winds of 175 km/h in the Gulf of Mexico, while its tropical storm-force winds extend up to 295 kilometers from the center. The National Hurricane Center (NHC) warned of a rapid deterioration of weather conditions along the northern Gulf Coast and urged immediate completion of preparations in the areas under alert.
The public advisory number 11 from the NHC, issued at 4:00 a.m. on Friday in the Central Time Zone of the United States (09:00 UTC and 5:00 a.m. in Miami), confirms that Isaías remains a category 2 hurricane, although it could reach category 3 during the morning. This additional strengthening is a forecast, not an intensity that has already been observed.
Isaiah is gaining strength as it moves toward the U.S. coast
At the time of the advisory, the eye of the hurricane was located near 26.4 degrees north latitude and 88.0 degrees west longitude, approximately 320 kilometers south-southeast of the mouth of the Mississippi River and 590 kilometers north-northeast of Progreso, Mexico. It was moving toward the north-northeast at 24 km/h and its minimum central pressure had dropped to 963 millibars.
Data from the hurricane hunter aircraft of the Air Force and the National Oceanic and Atmospheric Administration (NOAA) indicate that sustained winds have increased to 110 miles per hour, which is about 175 km/h, with higher gusts. In the previous advisory, the NHC had them at 165 km/h.
The radius of hurricane-force winds extended up to 45 kilometers from the center, while tropical storm winds reached up to 295 kilometers from the eye. This latter figure refers to the maximum extent from the center in any direction, not to the total diameter of the storm or to an area of uniform winds.
The NHC expected that Isaías would turn north on Friday, approach the northern Gulf coast in the afternoon, and make landfall at some point in the warned area during the night of Friday or in the early hours of Saturday, October 10. Although a slight weakening was anticipated before making landfall, the agency insisted that it would remain a dangerous hurricane.
Alert for waves of up to 2.1 meters
One of the most serious risks is the storm surge. According to the NHC, water levels could rise between 1.5 and 2.1 meters above normally dry land in areas of the coast ranging from Dauphin Island, Alabama, to Indian Pass, Florida, if the maximum sea rise coincides with high tide. Intense waves can exacerbate these floods.
Between Indian Pass and the Steinhatchee River in Florida, the forecast includes wave heights between 1.2 and 1.8 meters. In Mobile Bay and other sections of the coast of Mississippi, Alabama, Louisiana, and Florida, coastal flooding is also anticipated, with varying heights depending on the location and the evolution of the cyclone.
The storm surge warning remains in effect from the mouth of the Mississippi River to the Suwannee River in Florida. Meanwhile, the hurricane warning covers the area from Ocean Springs, Mississippi, to the boundary between Bay and Gulf counties in Florida. Tropical storm warnings are in place for adjacent areas of Louisiana, Mississippi, and Florida, as well as a surge watch between the Suwannee River and Yankeetown.
The meteorological center emphasized that this is a potentially deadly situation for residents of exposed coastal areas and urged immediate compliance with local evacuation and protection orders.
Rainfall of up to 380 millimeters and a tornado threat
Isaías could bring rainfall accumulations of between 100 and 200 millimeters over the weekend in southern Alabama, the northwest of Florida—including the Panhandle and Big Bend regions—and southwestern Georgia. In isolated areas, especially where persistent bands of precipitation form in Florida, amounts could reach around 380 millimeters.
For much of the southeastern United States, rainfall is forecasted to be between 50 and 125 millimeters, with local maxima of around 250 millimeters, especially in areas of the southern Appalachians and the Carolinas. The NHC warns of flash flooding, urban flooding, and river rises that could be significant in some locations.
There is also a risk of tornadoes starting from late Friday afternoon in coastal areas of Alabama, the Florida Panhandle, and the extreme southwest of Georgia. The threat could extend on Saturday to parts of eastern Alabama, Georgia, and the Carolinas. High surf, strong waves, and rip currents pose additional hazards for those on beaches and coastal areas.
The data corresponds to advisory number 11 from the National Hurricane Center, issued at 09:00 UTC on October 9, 2026. Due to potential changes in the trajectory, intensity, and alerts, residents in threatened areas should consult the official updates from the NHC and follow the guidance of local emergency authorities.
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