Located about 800 miles west of Cabo Verde, Kirk was producing sustained winds of 60 mph and moving west at 12 mph at 4 p.m. Monday. National Hurricane Center forecasters said they expect Kirk to strengthen significantly as it turns west-northwest in the next day and moves over warm waters and through a moist environment with low shear.

The tropics are very active as of Monday, with the National Hurricane Center watching five systems in the Atlantic Basin. That includes one that could become a major hurricane by Friday, and

In Helene's wake, the National Hurricane Center predicted Tropical Storm Kirk could grow into the next major hurricane by midweek. Here's what you need to know.