Tuesday, September 21, 2010

12th Named Storm of the Season Forms

Tropical Depression #14 strengthened early Tuesday into Tropical Storm Lisa west of the Cape Verde Islands in the east-central Atlantic Ocean. It is just barely at tropical storm strength with maximum sustained winds of 40 mph. Lisa is drifting north at just 5 mph, and will likely never impact the U.S. It is expected to stay in the open Atlantic for the duration of its life. Its track is highly uncertain right now, though, as seen in this ensemble guidance track plot:
There is some indication in extended forecast data that a tropical system may be closer to the US at the end of this month, so we'll be monitoring those trends in the coming days.