At 03Z today, the area of disturbed weather that was east of Puerto Rico yesterday was upgraded to Sub-tropical Storm Olga. Intensity is now estimated at 40kts and 1005mb, and since the strongest winds are still quite far from the center of circulation, it is it classified as purely tropical. STS Olga is forecast to weaken as it heads W not only over Jamaica, but also into much stronger vertical wind shear.
There's a long radar loop showing Olga's development near Puerto Rico available at: http://einstein.atmos.colostate.edu/~mcnoldy/tropics/olga07/Olga_10-11Dec07.gif
Please visit my tropical Atlantic headquarters.
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