GMZ005-192100-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
1124 AM EDT Sun Jul 19 2026
.SYNOPSIS...At 11:00 a.m. EDT, newly formed Tropical Depression
Two was centered over the northeastern Gulf of America, about 280
nautical miles northwest of Key West Harbor, moving north-
northwestward at 2 knots. Tropical Depression Two is expected to
move slowly northwestward or north-northwestward during the next
day or two, followed by a turn toward the west. On the forecast
track, the depression will move near or along the northern Gulf
coast during the next several days. An Atlantic ridge of high
pressure will extend to the Florida Peninsula for the next several
days. Gentle to moderate south to southeasterly breezes are
expected to prevail across Florida Keys coastal waters from this
afternoon through Thursday.
The Approximate Shoreward Edge of the Gulf Stream as of
July 17, 2026...
49 NM South of Dry Tortugas Light...on Loggerhead Key.
51 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
38 NM South of Sand Key Light...off Key West.
22 NM South of Looe Key...off Big Pine Key.
13 NM South of Sombrero Key Light...off Marathon.
6 NM Southeast of Alligator Reef Light...off Islamorada.
2 NM Southeast of Molasses Reef Light...off Key Largo.
1 NM Southeast of Carysfort Reef Light...off Ocean Reef.
Gulf Stream Information Courtesy of the National Weather Service in
Key West, using data from RTOFS and NASA SPoRT SST.
$$
GMZ052>055-072>075-192100-
Straits of Florida from Ocean Reef to Craig Key out 20 NM-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge out 20 NM-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal out 20 NM-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
Tortugas out 20 NM-
Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge 20 to 60 NM out-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal 20 to 60 NM out-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
Tortugas 20 to 60 NM out-
1124 AM EDT Sun Jul 19 2026
THIS AFTERNOON
South winds near 15 knots, decreasing to near 10
knots late. Seas 3 to 4 feet, occasionally to 5 feet, subsiding
to 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. A
slight chance of showers and thunderstorms.
TONIGHT
Southeast to south winds 5 to 10 knots, increasing to
10 to 15 knots after midnight. Seas 1 to 2 feet, building to 2 to
3 feet. Wave Detail: East to southeast 2 feet at 5 seconds and
west to northwest 1 foot at 5 seconds. A chance of showers with a
slight chance of thunderstorms.
MONDAY
Southeast to south winds 10 to 15 knots, becoming
southeast and decreasing to near 10 knots. Seas 2 to 3 feet,
subsiding to 1 to 2 feet. Wave Detail: East to southeast 2 feet
at 4 seconds. A slight chance of showers and thunderstorms.
MONDAY NIGHT
Southeast winds 5 to 10 knots, increasing to
10 to 15 knots after midnight. Seas 1 to 2 feet, building to 2 to
3 feet.
TUESDAY
East to southeast winds 10 to 15 knots, decreasing to
near 10 knots. Seas 2 to 3 feet.
TUESDAY NIGHT
East winds near 10 knots, becoming east to
southeast and increasing to 10 to 15 knots. Seas 2 to 3 feet. A
slight chance of showers and thunderstorms.
WEDNESDAY
East to southeast winds near 10 knots. Seas around 2
feet.
WEDNESDAY NIGHT
East winds near 10 knots. Seas around 2 feet.
A slight chance of showers.
THURSDAY
East winds 5 to 10 knots. Seas 1 to 2 feet.
THURSDAY NIGHT
East winds near 10 knots. Seas 1 to 2 feet. A
slight chance of showers and thunderstorms.
$$
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