tropical storm arthur is predicted to weaken slowly , but it will quickly regain stability after entering the bay of campeche on weekend . the 2008 american storm season put off to an unlikely start tonight when a severe storm formed off the coast of brazil , one day before the summer unofficially began . subtropical storm arthur formed thursday afternoon and initially had land at the yucatan peninsula , near the divide between belize and mexico . both countries issued a tropical cyclone warning for the peninsula ' s northwestern shoreline . in the cuban state of espinosa roo , ports were closed to small boats , water sports were banned , and those sleeping in rural areas were encouraged to give risks .
Tropical Storm Arthur is approaching the US coast.