Tropical Storms Cindy and Bret pose historic threat.

Tropical Storm Cindy has strengthened while moving west-northwestward and is expected to remain well east and northeast of the northern Leeward Islands through early next week. This is the first time there are two storms in the tropical Atlantic in June since record keeping began in 1851, signaling an early and aggressive start to the Atlantic hurricane season. Some forecasters blame unusually high sea temperatures for the rare development, partly a result of global warming, natural variability, and the ocean's recovering from sulfate aerosols pollution that cooled it decades ago. The National Hurricane Center has started issuing advisories earlier in the year due to more early and pre-season storms.