Tropical Storm Erin is expected to strengthen into a hurricane by Friday, with its most likely track keeping its center well offshore of the U.S. East Coast while producing coastal impacts, FOX Weather Hurricane Specialist Bryan Norcross said during a live question-and-answer segment.

On Thursday, Norcross addressed viewer concerns about both Erin and a separate system in the Gulf of America, which was given a 40% chance of development by the National Hurricane Center.

Within the system known as Invest 98L over the southwestern Gulf, Norcross said Hurricane Hunter aircraft had found signs of weak rotation, with peak winds around 30 mph in one rain band, but the circulation wasn’t significant.

The disturbance is moving toward northern Mexico and southern Texas , bringing the potential fo

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