Tropical threat brewing in Gulf could impact U.S. as a hurricane this weekend. See maps, possible path.

With less than two months remaining in the 2026 hurricane season, the potential for a ninth named tropical storm in the Atlantic basin is brewing in the southern Gulf.

Since the Atlantic's season began on June 1, it has only seen eight named storms this year, while El Niño continues to bring a more active season in the Pacific. The season ends Nov. 30.

What we know about the possible path

Tropical Depression Nine formed in the Gulf on Tuesday. As the storm brews over the warmer waters off Mexico, it's expected to become a tropical storm by early Wednesday and a hurricane on Thursday, according to the National Hurricane Center.

If it does become a tropical storm, it would receive the name Isaias, pronounced "ees-ah-EE-ahs."

Forecast models are beginning to come to agreement that the northward motion of this tropical system brings it to the Gulf Coast this weekend. 

Regardless of its name or if it develops into a tropical storm, we do know that it will bring moderate to heavy rainfall to the Gulf Coast and into the rest of the Southeast this weekend into early next week. The hurricane center forecasts 3 to 6 inches of rain for the central Gulf Coast from southeastern Louisiana to the Florida Panhandle. 

Some longer-range forecast models also see this moisture eventually reaching the Ohio Valley and Northeast by midweek next week.

What we do not know

Timing, storm intensity and severity of impacts to land with this tropical system are what remain unknown.

While some models have impacts starting Friday evening, others show it beginning later in the weekend. 

Florida Gov. Ron DeSantis on Tuesday signed an executive order declaring a state of emergency for 25 Florida counties ahead of the storm's arrival. DeSantis said in a statement that the order "ensures communities have the time and resources necessary to prepare for potential severe weather impacts to the Panhandle and Big Bend region of Florida."

Beware the "I"-named storm

While tropical storm and hurricane formation and frequency vary throughout the season, the "I"-named systems tend to be the most retired names within the Atlantic basin.

The most commonly known retired "I"-named storms are Ian (2022), Ida (2021), Irma (2017), and Irene (2011).

When Ike was retired in 2008, Isaias replaced the "I" name on the Atlantic tropical cyclones list, which rotates every six years.