Hurricane Isaias is bearing down on the northern Gulf Coast of the United States, with landfall expected late Friday or early Saturday, prompting warnings, evacuations, and emergency preparations across several states.
The storm, now the first Atlantic hurricane of the 2026 season, had maximum sustained winds of 80 mph as of Thursday morning and was located approximately 385 miles south-southwest of the mouth of the Mississippi River, moving east-northeast at 9 mph.
The National Hurricane Center forecasts landfall across parts of the Florida Panhandle, southern Alabama, and southern Mississippi. A hurricane warning is in effect from Ocean Springs, Mississippi, to the area around Mexico Beach, Florida. Storm surge alerts cover an even wider stretch of coastline.
If the storm surge peak coincides with high tide, coastal areas from Ocean Springs to Indian Pass, Florida, could see five to seven feet of water. Low-lying areas are considered especially vulnerable to flooding.
"We are expecting Isaias to be a dangerous hurricane when it makes landfall," said Michael Brennan, director of the National Hurricane Center, in a Thursday morning update. He added that the storm could reach "up to near-major hurricane strength" by Friday as it tracks north of Mexico's Yucatan Peninsula.
The center warned residents in likely impact zones on Thursday to complete all emergency life-safety and property protections without delay.
Rainfall totals of 3 to 7 inches are forecast from southeastern Louisiana to the Florida Panhandle, with isolated peaks of up to 10 inches possible in some areas. Flash flooding and urban flooding are also expected to threaten inland areas through the weekend, extending as far as the Tennessee Valley and the southern Appalachian Mountains.
Isaias moved over a section of the Gulf of Mexico where sea surface temperatures are around 87 degrees Fahrenheit, conditions highly favorable for intensification. Scientists note that warmer sea surface temperatures, linked to human-caused climate change, are a critical factor in making hurricanes larger and more likely to bring intense winds and rainfall at landfall.
The storm is expected to move quickly after coming ashore, which forecasters say may limit the risk of prolonged flooding.
"Isaias will be moving quickly as it comes onshore, which should hopefully reduce the chances for catastrophic flooding," said Philip Klotzbach, a research scientist in the Department of Atmospheric Science at Colorado State University. "But," he added, "the storm will still bring dangerous amounts of rain."
Klotzbach noted that Isaias ends an extraordinary four-month stretch with no Atlantic hurricanes since the season began on June 1. Since 1851, only three hurricane seasons on record have had no hurricanes through October 7. In an average year, the Atlantic would have seen at least five hurricanes by this point, according to the National Hurricane Center.
The prolonged quiet has been widely attributed to a Super El Nino climate pattern, which suppresses storm formation in the Atlantic while increasing activity in the Pacific. El Nino's storm-inhibiting effects are less pronounced in the Gulf of Mexico, however. Klotzbach said Isaias formed with the help of a cyclonic gyre system capable of generating storms on both sides of Central America, and is linked to Tropical Depression 20E currently active in the Pacific.
When Isaias was first declared a hurricane on Wednesday, it marked the latest date for a first Atlantic hurricane in 121 years, falling just short of the record set in 1905, according to data from the National Oceanic and Atmospheric Administration.
Ahead of the storm's arrival, oil and gas producers shut down a significant share of offshore production in the US Gulf, a region that accounts for nearly 15 percent of annual US crude output. As of Wednesday, approximately 25 percent of regional oil production had been temporarily halted, removing around 511,000 barrels per day from the market, according to the Marine Minerals Administration. Eight of the Gulf's 371 manned oil platforms had been evacuated.
Analysts said the production cuts are steep enough to affect markets, though previous Gulf hurricanes have caused larger disruptions. A more pressing concern, according to one energy market analyst, is whether Isaias makes landfall as a powerful storm near major refinery infrastructure.
Schools and local government offices have closed ahead of the storm's expected arrival.
