GMZ005-200330- Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas 429 PM EST Fri Feb 19 2021.SYNOPSIS..A cold front will push southeast across the waters late this afternoon through this evening, accompanied by an abrupt shift to strong northwest and north breezes. Over the weekend, the Keys waters will experience strong breezes along the periphery of high pressure that will move from the Ohio Valley on Saturday to the Delmarva Peninsula late Sunday. A weaker cold front is expected around Monday night. A high pressure center will pass eastward across North Florida on Tuesday night, leading to gentle northeast then east breezes over Keys waters on Wednesday. The Approximate Shoreward Edge of the Gulf Stream as of February 20.. 50 NM South of Dry Tortugas Light..on Loggerhead Key. 20 NM South of Cosgrove Shoal Light..off the Marquesas Keys. 11 NM South of Sand Key Light..off Key West. 6 NM South of Looe Key..off Big Pine Key. 6 NM South of Sombrero Key Light..off Marathon. 9 NM Southeast of Alligator Reef Light..off Islamorada. 8 NM Southeast of Molasses Reef Light..off Key Largo. 8 NM East of Carysfort Reef Light..off Ocean Reef. Gulf Stream Information Courtesy of the Naval Oceanographic Office. $$ GMZ042>044-200330- Hawk Channel from Ocean Reef to Craig Key out to the reef- Hawk Channel from Craig Key to west end of Seven Mile Bridge out to the reef- Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal out to the reef- 429 PM EST Fri Feb 19 2021 SMALL CRAFT ADVISORY IN EFFECT TONIGHT Southwest winds 5 to 10 knots, abruptly shifting northwest to north and increasing to 20 to 25 knots this evening. Seas 1 to 3 feet. West of Cosgrove Shoal Light, seas 2 to 3 feet, building to 4 to 6 feet. Nearshore waters smooth to a light chop, becoming very rough. Scattered showers this evening, tapering to isolated showers after midnight. SATURDAY North winds 20 to 25 knots. Seas 2 to 4 feet, except 5 to 7 feet west of Cosgrove Shoal Light. Nearshore waters very rough. Isolated showers in the afternoon northeast of Craig Key. SATURDAY NIGHT Northeast winds 20 to 25 knots, increasing to 25 knots. Seas 2 to 5 feet. Nearshore waters very rough, becoming extremely rough. Isolated showers. SUNDAY Northeast to east winds near 25 knots. Seas 4 to 7 feet. Nearshore waters extremely rough. Isolated showers. SUNDAY NIGHT East winds 20 to 25 knots. Seas 4 to 7 feet. Nearshore waters very rough. Scattered showers. MONDAY Southeast winds 15 to 20 knots. Seas 3 to 6 feet. Nearshore waters choppy. Scattered showers. MONDAY NIGHT South winds 5 to 10 knots, becoming west to northwest. Seas 1 to 3 feet. Nearshore waters smooth to a light chop. Isolated showers. TUESDAY North winds 10 to 15 knots. Seas 1 to 3 feet. Nearshore waters a light to moderate chop. Isolated showers. TUESDAY NIGHT Northeast winds 10 to 15 knots. Seas 1 to 3 feet. Nearshore waters a light to moderate chop. WEDNESDAY AND WEDNESDAY NIGHT East winds near 10 knots. Seas 1 to 2 feet. Nearshore waters a light chop. $$