A system moving out in the mid-Atlantic was designated Tropical Depression 8 at the 5AM update, and from the looks of the 5-day forecast, might become the first one to significantly affect the east coast sometime late next week. Could become a tropical storm as early as this evening, in which case it would be TS Hanna. Still too early to be certain but this definitely one to keep an eye on.
Update: A little earlier than I expected, TD8 has been upgraded to TS Hannah with the 11AM update.
HANNA HAS BEEN MOVING TOWARD THE WEST-NORTHWEST...OR 300/10...DURING THE LAST 6 HOURS. HOWEVER...A MOTION TOWARD THE NORTHWEST IS EXPECTED OVER THE NEXT 2-3 DAYS AS HANNA MOVES AROUND THE SOUTHWESTERN PERIPHERY OF THE SUBTROPICAL RIDGE. THEREAFTER...THE TRACK BECOMES MUCH LESS CERTAIN AS IT REMAINS TO BE SEEN HOW HANNA WILL INTERACT WITH A MID-LATITUDE TROUGH FORECAST TO MOVE OFF THE U.S. EAST COAST. MOST OF THE DYNAMICAL MODELS SHOW HANNA BEING LEFT BEHIND IN AN AREA OF WEAK STEERING. HOWEVER...THE TRADITIONALLY GOOD PERFORMING GFS FORECASTS HANNA TO TURN NORTHEASTWARD AT DAYS 4 AND 5. THE OFFICIAL FORECAST ASSUMES THE FORMER OF THOSE SCENARIOS AND SHOWS A SLOW WESTWARD TRACK.