Tropical Storm Gaston
Posting Date: 03 September 2010
Location: Atlantic
Peril: Windstorm
Tropical storm Gaston, the seventh named storm of the 2010 hurricane season was declared at 21:00 UTC on Wednesday, 1 September. Gaston is the fourth named storm to form in the last eleven days and was another Cape Verde storm forming from an active wave off the coast of Africa. As of 03:00 UTC Gaston was located near 13.4N 37.7W about 935 miles (1500 km) west of the Cape Verde Islands with maximum sustained winds of 40 mph (65 km/hr) and a minimum central pressure of 1005 mb. Gaston is moving in a westward direction with a forward speed near 12 mph (19 km/hr) and this motion is expected to continue over the next few days, potentially with a decrease in forward speed. There is quite a large spread in the model track guidance, however most models favour a westward course which would mean Gaston would approach the Leeward Islands at the beginning of next week. There is also a high degree of uncertainty associated with the intensity guidance. Whilst most models indicate that Gaston will intensify over the next 5 days, there is a large spread with regards to how much intensification there will be, ranging from a weak tropical storm to a category 3 hurricane in 5 days time. The NHC are calling for a gradual increase in strength due to favourable environmental conditions, particularly over the next 48 hours and they suggest that Gaston will become a hurricane over the weekend. RMS will closely monitor Gaston’s progression across the Atlantic and this report will be updated by 10am BST on Friday, 3 September.
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