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   GMZ005-220445-  Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas  432 PM EST Tue Jan 21 2020    SYNOPSIS  The low level flow between an artic high pressure  system over the Ohio Valley and a developing low pressure system  near the Bahamas will support strong to near-gale breezes tonight  and Wednesday morning across the coastal waters of the Florida  Keys. Low pressure will exit east of Bermuda Wednesday night or  Thursday. High pressure will move from the Ohio Valley to the U.S.  eastern Seaboard Thursday through Friday. A cold front will slip  into the northeast Gulf on Friday night or Saturday.    The Approximate Shoreward Edge of the Gulf Stream as of  January 20...    9 NM South of Dry Tortugas Light...on Loggerhead Key.  2 NM South of Cosgrove Shoal the Marquesas Keys.  Less than 1 NM South of Sand Key Key West.  2 NM South of Looe Big Pine Key.  3 NM South of Sombrero Key Marathon.  2 NM Southeast of Alligator Reef Islamorada.  Less than 1 NM Southeast of Molasses Reef Key Largo.  Less than 1 NM East of Carysfort Reef Ocean Reef.    Gulf Stream Information Courtesy of the Naval Oceanographic Office.    $$

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