MIAMI, Sept. 16 (UPI) — Tropical Storm Karl has formed in the open Atlantic Ocean with maximum sustained winds of 45 mph, according to the National Hurricane Center.
The storm system is about 640 miles east of the Leeward Islands. Karl is moving west at a speed of 13 mph and that movement is expected to continue through Saturday, after which the storm could begin moving west-southwest.
The National Hurricane Center said the storm should strengthen gradually due to lower shear and warming sea surface temperatures after 36 hours.
“There are no coastal watches or warnings in effect,” the NHC said in a statement. “Tropical-storm-force winds extend outward up to 160 miles from the center.”
Tracking through Wednesday puts Karl northeast of Puerto Rico, though it’s unclear if the storm will eventually hit land.