Satellite images and tracking maps of Tropical Storm Gaston 2022, September 18 - 26. Max wind speed 65mph.
Gaston lacks organized deep convection and has become post-tropical. Organized convection is not expected to redevelop due to hostile upper-level winds and a dry surrounding environment. Therefore, this is the final NHC advisory. ASCAT data valid at 23:53 UTC indicated peak winds between 30-35 knots on the north side of Gaston. Assuming a little undersampling may have occurred, the initial intensity was set on the high end of those estimates at 40 mph (35 knots).
Gaston is forecast to move generally west-southwestward for the next day or so, steered by a low- to mid-level ridge that extends across most of the northern Atlantic. Since deep convection is not expected to redevelop and no baroclinic forcing is expected to otherwise sustain the remnants of Gaston, the cyclone should gradually spin down until it dissipates in about 48 hours. No significant changes were made to the NHC track or intensity forecast.
Forecaster D. Zelinsky. Information provided by the National Hurricane Center (NHC).