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Boston Weather: 37.0°F | Fair

Weather: Hello, Dolly!

By Robert Lindsay Korty
STAFF METEOROLOGIST -- Tropical Depression Edouard crossed Florida Wednesday night, and emerged in the Gulf of Mexico as little more than a weak swirl of low clouds. In the open Atlantic this week, Dolly, which was the first storm to form off of the African coast this summer, dissipated as strong winds aloft tore the towering convection away from the circulation. Fay formed in the western Gulf of Mexico yesterday and is headed slowly for the Texas and Louisana coast, bringing the threat of flooding rains. Though six storms have formed in the Atlantic basin this year, all have been unexceptional, weak cyclones (though Fay might strengthen some today). When an El Nino develops in the eastern tropical Pacific, Atlantic hurricane activity is muted. The reasons why this is so are poorly understood, but there is spectulation that westerly winds aloft become stronger, on average, over much of the tropical Atlantic during these events; such winds can limit the growth of incipient tropical cyclones by tilting or shearing the convection that blooms around their centers. But severe storms can still form during an El Nino year: Hurricane Andrew did catastrophic damage when it hit south of Miami in 1992, but it was one of only six storms to form in the Atlantic that year.

No tropical cyclones are in the forecast for the Northeast, but it will warm quickly this weekend as high pressure moves offshore to our south.

Extended forecast

Today: Sunny. High 73°F (23°C).

Tonight: Clear. Low 56°F (13°C).

Saturday: Sunny. High 82°F (28°C).

Sunday: Sunny. High 88°F (31°C), low 60°F (16°C).