Atlantic Hurricane Outlook – September 3, 2025
On September 3, the Atlantic basin remains free of active tropical cyclones. A tropical wave emerging from Africa is showing increased signs of organization, with the NHC assigning a 70% chance of development over the next week. This system could become Tropical Depression Seven or Tropical Storm Gabrielle. Florida and the Gulf of Mexico remain quiet, experiencing only typical late-summer thunderstorms.
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Atlantic remains quiet; African wave now has 70% 7-day development odds
Atlantic Basin Overview
No Active Storms
The Atlantic basin continues to be free of active tropical cyclones—no storms are currently present.Tropical Wave Off Africa
A tropical wave exiting Africa is gaining strength. The NHC now gives this system a 0% development chance in 48 hours, rising to 70% over 7 days. Development into Tropical Depression Seven—and possibly Tropical Storm Gabrielle—is considered likely by the weekend.
Environmental Conditions
Sea Surface Temperatures (SSTs): Remain warm in the Caribbean and Gulf (about 29–31 °C) but cooler farther east, where the African wave is located.
Wind Shear: Moderate to strong shear persists across much of the Atlantic but may ease near the developing wave.
Mid-Level Humidity & SAL: Dry air and the Saharan Air Layer (SAL) are widespread, but are expected to diminish along the wave’s path as it tracks westward.
Gulf of America (Mexico) & Caribbean
The Gulf remains quiet, dominated by high pressure. Only routine afternoon thunderstorms are expected along coastal areas; no tropical development is expected at this time.
Florida & Southeast U.S. Forecast
Florida continues with typical early-September weather: hot and humid, with scattered sea-breeze-driven afternoon thunderstorms. No tropical threats are expected. Coastal waters are calmer as the Atlantic’s longtime surf persists from prior systems but gently subsides.
Rain forecast visualization courtesy of Windy.com
Summary
Atlantic basin remains calm with no systems currently active.
A tropical wave off Africa shows a high (70%) chance of developing into a tropical cyclone within 7 days.
Environmental factors—warm SSTs but competing dry air, SAL, and wind shear—will determine if and when development occurs.
Gulf and Florida remain storm-free and continue typical late-summer weather patterns.
TL;DR – September 3 Snapshot
Atlantic is quiet with no storms.
African wave now has 70% development odds over the next 7 days.
Atlantic environment remains marginal but improving near the wave.
Florida and Gulf remain calm with routine storms.
