NHC gives Invest 92-L 60% chance of development in the Gulf

On Monday, the National Hurricane Center designated a low-pressure area in the southwestern Gulf of Mexico as Invest 92-L, signaling the start of specialized computer model tracking for the brewing tropical disturbance.

National Hurricane Center assesses formation odds

As of Monday afternoon, the National Hurricane Center assessed the system with a 60% chance of development within the next two days and an 80% chance over the next seven days. WESH 2 First Warning Weather Meteorologist Cam Tran stated that the area of interest could become a tropical depression by the end of the week. The disturbance is producing disorganized showers and thunderstorms, with conditions somewhat favorable for gradual development by mid-week. Coverage from The Weather Channel notes that if the system intensifies into a tropical storm with sustained winds of at least 39 mph, it would be named Tropical Storm Isaias, marking the ninth storm of the 2026 Atlantic hurricane season. Model tracks currently show a slight easterly shift, though forecasters note a large spread in potential trajectories if development occurs. The system is expected to drift eastward for a couple of days before turning northward.

Did You Know? The term “invest” is short for investigation and refers to a weather feature that the National Hurricane Center is actively studying, which allows meteorologists to run specialized computer models and dispatch hurricane hunter aircraft.

Potential Gulf Coast Impacts and Rainfall Threats

While current forecasts expect the system to remain weak and well west of Central Florida, surrounding regions face mounting moisture risks. This moisture could bring flooding to those unaccustomed to tropical weather and potential landslides in higher elevation areas. Tuesday through 3 a.m. Friday. Minor coastal flooding may also become a concern around midweek.

Wind shear and El Niño suppress seasonal activity

Higher-level conditions could ultimately limit the system’s longevity. Wind shear is forecast to increase across the northern Gulf later in the week, which could prevent further intensification and help keep the season hurricane-free. FOX Weather points out that the 2026 Atlantic hurricane season has experienced the quietest start since the satellite era began in 1966, with no hurricanes having formed thus far due to El Niño-driven winds suppressing activity. If 2026 remains without a hurricane, it would be the first such season in the modern satellite era, though some past hurricanes may have gone undetected far from ships and land. FOX Weather Meteorologists Bob Van Dillen and Michael Estime are monitoring the Gulf Coast, where water temperatures are at their warmest levels since 1982.

Previous 2026 Gulf Activity

The Gulf has already seen three tropical storms this year. Tropical Storm Arthur reached storm strength just before hitting Texas in June; its remnants brought 37.53 inches of rain to Alexandria, Louisiana, the highest total for an Atlantic tropical cyclone. In July, Tropical Storm Bertha formed in the northeast Gulf and struck the Biloxi Wildlife Management Area on July 22, bringing 1 to 5 inches of rain. Most recently, Tropical Storm Edouard made landfall on Sept. 1 with winds of about 60 mph.

Track wind speeds and pressure for Invest 92-L

What wind speeds and pressure does Invest 92-L currently have?

The system features 30 mph winds and a minimum central pressure of 1010 mb.

Gulf tropical development Tropical Storm Isaias possible forecast
Photo: The Weather Channel

What are the current development probabilities for the disturbance?

The National Hurricane Center estimates a 60% chance of development within the next two days and an 80% chance within the next seven days.

How will marine conditions be affected along the coast?

Offshore seas could build to 5 to 7 feet by Wednesday as northeast winds increase, and a Small Craft Advisory remains in effect from Tuesday morning through Friday morning.