Gulf of Mexico including Dry Tortugas and Rebecca Shoal Channel Marine Forecast
| Tonight...Northeast Winds 10 To 15 Knots. Seas 2 To 3 Feet. Wave Detail: North To Northeast 3 Feet At 5 Seconds. A Slight Chance Of Showers. |
| Thursday...North To Northeast Winds 10 To 15 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet. Wave Detail: Northeast 3 Feet At 5 Seconds. A Slight Chance Of Showers. |
| Thursday Night...Northeast Winds 15 To 20 Knots. Seas 2 To 4 Feet, Occasionally To 5 Feet. Wave Detail: North To Northeast 4 Feet At 5 Seconds. |
| Friday...Northeast Winds 15 To 20 Knots. Seas 3 To 4 Feet, Occasionally To 5 Feet. A Slight Chance Of Showers And Thunderstorms. |
| Friday Night...Northeast Winds 20 To 25 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Saturday...Northeast Winds 20 To 25 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Saturday Night...Northeast Winds 20 To 25 Knots. Seas 5 To 8 Feet, Occasionally To 10 Feet. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Sunday...Northeast Winds 25 To 30 Knots. Seas 7 To 10 Feet, Occasionally To 13 Feet. Showers Likely With A Slight Chance Of Thunderstorms. |
| Sunday Night...Northeast Winds 25 To 30 Knots. Seas 6 To 9 Feet, Occasionally To 11 Feet. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Monday...Northeast Winds 25 To 30 Knots. Seas 6 To 9 Feet, Occasionally To 11 Feet. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
| Monday Night...Northeast Winds 25 To 30 Knots, Becoming 20 To 25 Knots After Midnight. Seas 3 To 5 Feet, Occasionally To 6 Feet. A Chance Of Showers With A Slight Chance Of Thunderstorms. |
GMZ005 Synopsis Issued: 421 PM EDT Wed Oct 21 2026
Synopsis...
A Strong Area Of Low Pressure Off The Mid-Atlantic Will Continue To Lift Northward This Evening, Supporting Slackening Breezes. A Weak High Pressure System Centered Over The Dakotas Will Progress Eastward And Strengthen Over The Next Several Days. Meanwhile, A Broad Low Pressure System Will Fester Near The Southeastern Bahamas Late Friday Through The Weekend. The Resulting Tightening Pressure Gradient As These Systems Interact Will Support Strong To Potentially Near Gale Northeasterly Breezes By Sunday Or Sunday Night. The Freshening Breezes And A Surge Of Moisture Will Also Support Elevated Rain And Thunder Chances Over The Weekend Through Monday. The Approximate Shoreward Edge Of The Gulf Stream As Of October 19, 2026... 46 Nm South Of Dry Tortugas Light, On Loggerhead Key 18 Nm North Of Cosgrove Shoal Light, Off The Marquesas Keys 12 Nm North Of Sand Key Light, Off Key West 7 Nm North-Northwest Of Looe Key, Off Big Pine Key 5 Nm Southeast Of Sombrero Key Light, Off Marathon 2 Nm South-Southeast Of Alligator Reef Light, Off Islamorada 2 Nm Northwest Of Molasses Reef Light, Off Key Largo 3 Nm Northwest Of Carysfort Reef Light, Off Ocean Reef Gulf Stream Information Courtesy Of The Naval Oceanographic Office.
...