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Interesting discussion from NWS Key West office: FLORIDA KEYS AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KEY WEST FL 500 PM EDT THU JUL 7 2005 .DISCUSSION... .OBSERVATIONS/TRENDS... GOES-12 WATER VAPOR IMAGERY SHOWS AN APPARENT MID AND UPPER LEVEL CYCLONIC CIRCULATION JUST NORTH OF THE BAHAMIAN CHAIN...WHICH APPEARS TO BE ERODING THE SOUTHERN PORTION OF THE WESTERN ATLANTIC SUBTROPICAL RIDGE. MEANWHILE...AS THE REMNANTS OF TROPICAL CYCLONE CINDY EXIT NORTHEASTWARD INTO THE TENNESSEE VALLEY...ANOTHER MID LATITUDE TROUGH IS DIVING SOUTHEAST INTO THE GULF COAST REGION. SUBSEQUENTLY...IT APPEARS THE FORMER DISTURBANCE HAS CREATED A WEAKNESS IN THE SUBTROPICAL ANTICYCLONE ALLOWING HURRICANE DENNIS TO MIGRATE TOWARD THE NORTHWEST ALL DAY. |