Forecasters say a hurricane warning has been issued for the Azores as Hurricane Gabrielle races across open Atlantic waters on track for the volcanic archipelago.

At 11 p.m. Wednesday, the National Hurricane Center issued an advisory stating that Tropical Storm Humberto is in the Atlantic Ocean, 505 miles east-northeast of the Northern Leeward Islands. The system is moving to the west-northwest at 12 mph, with maximum sustained winds of 45 mph.

Two tropical systems could churn to life by this weekend as Atlantic hurricane season enters its final months and the hot spots to watch for storm development begin to move closer to home. Unlike Gabrielle,

As Hurricane Gabrielle moves toward Europe, the focus is turning to two tropical waves that are expected to become cyclones, according to the National Hurricane Center.

Hurricane Gabrielle quickly increased to a Category 4 storm as it moved away from Brevard. However, forecasters are closely monitoring two other systems brewing in the Atlantic that could take a path closer to the Space Coast.

Tropical activity is ramping up in the Atlantic Basin. Along with Hurricane Gabrielle, which is currently tracking east of Bermuda, the National Hurricane Center is monitoring two tropical disturbances in the central Atlantic for potential development this week.

As a new system emerges east of the Windward Islands, Hurricane Gabrielle is strengthening in the Atlantic. What to expect in South Carolina.