Hurricane Earl strengthens into Category 4 storm - WKOW 27: Madison, WI Breaking News, Weather and Sports

Hurricane Earl strengthens into Category 4 storm

MIAMI (AP) -- Hurricane Earl strengthens into a Category 4 storm with top sustained winds of 135 mph.

Forecasters say the seventh tropical storm of the season has formed far out in the Atlantic on the heels of Hurricane Earl that's steaming toward the Eastern Seaboard.

Gaston is the fourth tropical storm to form in the last 11 days for a season that has suddenly become busy.

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