Hurricane Maria
After becoming a tropical storm, it had an eye, a clear opening at the center of the storm. 6 hours later since becoming a tropical storm, the National Hurricane Center (NHC) named it Tropical Storm Maria. On September 17, Maria turned to move west-northwest and quickly becomes a Category 1 hurricane. In just 12 hours, it became a Category 5 hurricane with maximum winds of 160 mph (260 km/h) on September 18.