Forecasters are turning their attention towards the Gulf of Mexico and Caribbean as October brings a seasonal shift in tropical storm activity, although strong wind shear is expected to make development difficult.
The Atlantic is currently quiet. The National Hurricane Center said on Friday, October 2, that there were no tropical cyclones in the basin and that no new system was expected to form in the Gulf or Caribbean over the following seven days. ([nhc.noaa.gov](https://www.nhc.noaa.gov/mobile/?trk=organization_guest_main-feed-card-text&utm_source=openai))
A small area of low pressure in the central Atlantic is being watched, but its chances of becoming an organised tropical system remain low at about 10 per cent. The disturbance is linked to the remnants of former Tropical Storm Fay, with dry air and strong upper-level winds expected to limit further development. ([nhc.noaa.gov](https://www.nhc.noaa.gov/mobile/text/refresh/MIATWOAT%2Bhtml/251136_MIATWOAT.html?utm_source=openai))
Why tropical activity shifts towards the Gulf in October
As autumn advances, cooler waters and increasingly hostile winds over the open Atlantic tend to make the eastern and central basin less favourable for storm formation. The focus therefore often moves westwards, towards the warmer Caribbean Sea and Gulf of Mexico.
October weather patterns can also encourage a broad area of low pressure to form over Central America, known as the Central American Gyre. Smaller disturbances may develop around this feature, while cold fronts moving into the Gulf can stall and provide another potential trigger for low pressure.
That seasonal set-up does not guarantee a named storm. Any system forming near Central America or the Gulf would still have to overcome dry air, competing weather systems and strong winds higher in the atmosphere.
El Niño is expected to be one of the main barriers to development this year. NOAA says the phenomenon generally increases vertical wind shear over the Atlantic, making it harder for thunderstorms to organise and for tropical systems to strengthen. ([aoml.noaa.gov](https://www.aoml.noaa.gov/how-does-el-nino-impact-atlantic-hurricane-season/?utm_source=openai))
NOAA’s Climate Prediction Center also says that, during El Niño years, activity is often displaced towards the Gulf Coast and subtropical Atlantic because conditions are less favourable in the main tropical development region. That can reduce the number of storms overall while leaving the Gulf and Caribbean under continued observation. ([cpc.ncep.noaa.gov](https://cpc.ncep.noaa.gov/products/outlooks/hurricane.shtml?utm_source=openai))
For now, forecasters are monitoring the changing pattern rather than warning of an immediate Gulf storm. The key question in the weeks ahead will be whether any disturbance can overcome the strong atmospheric wind shear that is currently restricting tropical development.
