Tropical Storm Sebastien forms in Atlantic

System expected to remain over open waters, forecasters say

ORLANDO, Fla. – With just days left in the Atlantic hurricane season, Tropical Storm Sebastien has formed.

The system, which was about 275 miles northeast of the Northern Leeward Islands at 5 p.m. Tuesday, is expected to remain over open waters and doesn’t currently pose a threat to land, according to the National Hurricane Center.

Sebastien has maximum sustained winds up to 45 mph with higher gusts and is moving northwest at about 12 mph, forecasters said. The system is expected to make a turn to the north on Wednesday followed by a turn to the northeast and an increase in forward speed Wednesday night, the Hurricane Center said.

Forecasters predict Sebastien will become an extra-tropical cyclone in a couple of days before being absorbed by a cold front later this week.

The National Oceanic and Atmospheric Administration provided the following definition for an extra-tropical cyclone:

“An extra-tropical cyclone is a storm system that primarily gets its energy from the horizontal temperature contrasts that exist in the atmosphere. Extra-tropical cyclones are low pressure systems with associated cold fronts, warm fronts, and occluded fronts.”

No watches or warnings have been issued in connection with the system.

There are currently no other systems being monitored in the Atlantic.

Hurricane season ends Nov. 30.