Tropical Storm Humberto is spinning in the west-central Atlantic, but the bigger question for the United States is what’s brewing behind it. Humberto is not a direct threat to the US, but it could rapidly intensify and grow into a major hurricane this weekend as it tracks northwest,

The storm will likely develop into a hurricane over the weekend, according to the National Hurricane Center in Miami.

Humberto is expected to become a hurricane by the weekend, but a nearby tropical wave is making its path uncertain, forecasters said.

Humberto could become the season's next major hurricane, but the interest area set to become Imelda could be a threat to the Bahamas and U.S. Here's what you need to know in our latest forecast update.

A hurricane warning was in effect for the volcanic archipelago which could experience dangerous conditions from Gabrielle as early as Thursday.

Tropical Storm Humberto formed in the Atlantic Wednesday night, according to an advisory from the National Hurricane Center (NHC). The storm was about 550 miles east-northeast from the Northern Leeward Islands, moving 40 mph, the advisory said.

At 5 a.m. Thursday, the National Hurricane Center issued an advisory stating that Tropical Storm Humberto is in the Atlantic Ocean, 480 miles east-northeast of the Northern Leeward Islands. The system, with maximum sustained winds of 45 mph, is moving northwest at 10 mph.

Tropical Storm Humberto formed east of the Leeward Islands as a separate storm threat builds for the East Coast.

Tropical Storm Humberto could potentially bring some downstream impacts to parts of the Southeast U.S. coast from Florida up to North Carolina, the National Hurricane Center said.

It’s too soon to know how Humberto could affect land. Another potential storm nearby is making for a complicated forecast.

Forecasters say another tropical system may develop in the next few days and could pose a threat to the southeastern United States.