Tropical Storm Isaias forms in Gulf of Mexico, forecast to reach US as hurricane

Tropical Storm Isaias formed on Wednesday, 7 October 2026, in the Gulf of Mexico off eastern Mexico. Forecasters expect it to strengthen into a hurricane. If it does, it would be the first hurricane of the 2026 Atlantic season, according to The Guardian and the BBC.

The storm is forecast to reach the US Gulf Coast later this week. Landfall is projected around late Friday, 9 October, or early Saturday, 10 October. According to the US National Hurricane Center (NHC), as cited by The Guardian and the BBC, Isaias is expected to strengthen rapidly and become a category 2 hurricane before landfall.

The NHC has said the exact landfall location is not yet known. The Guardian quoted forecasters as citing "uncertainty in where the system makes the northeast turn and how fast it moves toward the coast".

Where the storm is

According to The Guardian, citing the NHC, the storm on Wednesday morning was about 285 miles (460 km) west of Progreso, Mexico. It was about 580 miles south-west of the mouth of the Mississippi River. It had maximum sustained winds of 40 mph (65 km/h) and was moving east to north-east at 8 mph. The Guardian reports it was previously Tropical Depression Nine.

The Guardian reports the NHC's initial projections placed a possible landfall between eastern Louisiana and the western Florida Panhandle. The BBC describes landfall as probably in Mississippi, Alabama or Florida.

Expected impacts

According to the BBC, up to 4 in (100 mm) of rain is possible around the Bay of Campeche and the Yucatan Peninsula. In the US, the BBC reports 3–6 in (75–150 mm) of rain is possible from south-east Louisiana to north-west Florida. Up to 10 in (250 mm) could fall in a few places, with possible flash flooding.

The BBC says the US National Weather Service expected to issue Hurricane and Storm Surge Watches later on Wednesday. The reports reviewed by Vocemundi do not say whether these have been issued. They also do not describe any evacuation orders or any watches issued by Mexican authorities.

The BBC reports Gulf sea temperatures of 30–31C, around 2C above normal. It adds that wind shear is expected to increase sharply before landfall, which may limit the storm's peak intensity.

A quiet season

The Guardian and the BBC describe the season as unusually quiet. Both attribute this to a strong El Niño in the Pacific. According to The Guardian, the first hurricane of an Atlantic season has not formed this late since 8 October 1905. The BBC reports that on 12 September the season set a record for the latest date without a hurricane since the satellite era began in the 1960s.

What each side says

• US National Hurricane Center, as quoted by The Guardian: "There is an increasing risk of dangerous wind and storm surge impacts along portions of the northern Gulf Coast." It added: "Residents from Louisiana to the Florida Panhandle should closely monitor the latest forecast updates and ensure they have their hurricane plan in place."
• Florida Governor Ron DeSantis declared a state of emergency across 25 north Florida counties over concerns about potential impacts, according to the BBC. The reports do not name the counties or quote the governor's office.

Analysis

The main open question is where Isaias turns north-east and how fast it moves. The NHC has flagged both as uncertain. Two factors cited by the BBC point in different directions: warm Gulf waters could support strengthening, while increasing wind shear may cap peak intensity. One scenario is a category 2 landfall near the Alabama–Florida border, as one projected track suggests. A shift east or west would change which communities face the heaviest rain and surge. Later advisories, and any watches or warnings, will clarify the risk. For the season, Isaias may end a historically late wait for a first hurricane.

Produced by the Vocemundi newsroom with AI assistance.