CNN Weather

Tropical Storm Humberto is spinning in the central Atlantic, but the bigger question for the United States is what’s brewing behind it. A disturbance moving through the northern Caribbean — already drenching Puerto Rico, the Virgin Islands and Hispaniola — has a high chance of becoming the next named storm by this weekend.

What makes the forecast especially complicated is how this disturbance might interact with Humberto. If it stays weak, Humberto could tug it harmlessly out to sea. But if it strengthens over the very warm Caribbean water, it could resist Humberto’s pull and take a path that threatens the East Coast. How strong Humberto gets, how large it grows, and how close the two storms come to each other will all shape the outcome.

Multiple Hurricane Hunter aircraft,

See Full Page