Hurricane Isaias strengthened over the Gulf of Mexico on Thursday as coastal communities prepared for a potentially dangerous landfall along the northern U.S. Gulf Coast.

The U.S. National Hurricane Center said Isaias had maximum sustained winds of 85 mph — about 140 km/h — in its 10 a.m. Central advisory. The storm was forecast to intensify further and approach the coast late Friday or early Saturday.

Dangerous surge and flooding expected

Hurricane warnings covered the coast from Mississippi through Alabama to Florida’s Panhandle. Reuters reported that forecasters expected Isaias to approach Category 3 strength before landfall, with winds potentially reaching 110 mph on Friday.

The National Hurricane Center warned of life-threatening storm surge, damaging winds and heavy rain. Reuters said surge could reach five to seven feet in the hardest-hit areas, while rainfall totals of three to seven inches were expected, with isolated amounts near 10 inches. Tornadoes were also possible.

Residents were urged to follow local evacuation instructions and complete preparations before conditions deteriorate.

Evacuations and emergency declarations

Mandatory evacuations began at noon Thursday for coastal parts of Okaloosa County, Florida. Officials asked tourists to leave and planned to close three airports Thursday evening.

Florida had already declared an emergency in 25 counties. Alabama Governor Kay Ivey declared an emergency across 40 counties, while communities including Dauphin Island prepared evacuations and shelters. Local emergencies were also declared in parts of coastal Mississippi.

Offshore energy production disrupted

Isaias has forced energy companies to evacuate offshore platforms and curtail operations. Reuters reported that Gulf producers had shut in about 25 per cent of current oil production and 16 per cent of natural-gas production by Wednesday.

The interruption could add pressure to fuel markets beyond the immediate storm zone. Canadian travellers with Gulf Coast plans may also face airport closures and other disruptions as the storm approaches.

An unusually late first hurricane

Isaias is the first Atlantic hurricane of the 2026 season. Its formation nearly matched the record for the latest first hurricane of an Atlantic season, set on October 8, 1905. Reuters attributed the quiet season to strong El Niño conditions that increased wind shear over the Atlantic.

Forecasts can change as new aircraft and satellite observations arrive. Residents in the warning area should rely on the latest National Hurricane Center and local emergency-management guidance.

Sources: Reuters, published October 8 at 1:44 p.m. Eastern; U.S. National Hurricane Center, Advisory 8 issued October 8 at 10 a.m. Central; Associated Press: Gulf Coast preparations.

AI-generated editorial illustration for The Northern Current. A conceptual Gulf hurricane scene; this is not a photograph of Hurricane Isaias.