Hurricane Erin was a Category 4 storm Monday morning and is expected to retain major hurricane status through the middle of the week.

Erin is a large hurricane and is expected to grow "substantially in size" as it moves over the western Atlantic this week, according to the Hurricane Center. Hurricane-force winds extend outward up to 80 miles from the center, and tropical-storm-force winds extend outward up to 205 miles.

As Hurricane Erin travels along the Caribbean, two other disturbances are being tracked in the Atlantic, according to the National Hurricane Center. On Sunday, Aug. 17, at 5 a.m. ET, the National Hurricane Center announced that over the next several days,