Marine Weather and Tide Forecast for Key Colony Beach, FL
 | Sunrise 6:37 AM Sunset 8:19 PM Moonrise 12:08 AM Moonset 12:20 PM |
GMZ053 Expires:202506190230;;953480 Fzus52 Kkey 181425 Cwfkey
coastal waters forecast for the florida keys national weather service key west fl 1025 am edt Wed jun 18 2025
florida bay, hawk channel and straits of florida from ocean reef to south of dry tortugas, and the extreme southeastern gulf of america, including the florida keys national marine sanctuary
seas are given as significant wave height, which is the average height of the highest 1/3 of the waves. Individual waves may be more than twice the significant wave height.
wave detail will include details about the period and direction of origin for the highest energy waves. Long-period swells coming from a different direction than the wind would be included in the wave detail.
gmz052>055-072>075-190230- 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- 1025 am edt Wed jun 18 2025
This afternoon - East to southeast winds near 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave detail: east to southeast 3 feet at 5 seconds. Isolated showers and Thunderstorms.
Tonight - East to southeast winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: east 4 feet at 5 seconds. Isolated showers and Thunderstorms.
Thursday - East to southeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: east to southeast 4 feet at 5 seconds. Scattered showers and isolated Thunderstorms.
Thursday night - East winds 10 to 15 knots. Seas 2 to 3 feet. Isolated showers and Thunderstorms.
Friday - East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers and isolated Thunderstorms.
Friday night through Saturday night - East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers and isolated Thunderstorms.
Sunday and Sunday night - East winds near 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers and isolated Thunderstorms.
coastal waters forecast for the florida keys national weather service key west fl 1025 am edt Wed jun 18 2025
florida bay, hawk channel and straits of florida from ocean reef to south of dry tortugas, and the extreme southeastern gulf of america, including the florida keys national marine sanctuary
seas are given as significant wave height, which is the average height of the highest 1/3 of the waves. Individual waves may be more than twice the significant wave height.
wave detail will include details about the period and direction of origin for the highest energy waves. Long-period swells coming from a different direction than the wind would be included in the wave detail.
gmz052>055-072>075-190230- 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- 1025 am edt Wed jun 18 2025
GMZ005 Synopsis For Keys Coastal Waters From Ocean Reef To Dry Tortugas 1025 Am Edt Wed Jun 18 2025
Synopsis - Atlantic ridging will remain across the florida peninsula through Sunday. This will support moderate to occasionally fresh east to southeast breezes and isolated, fast- moving showers and Thunderstorms at times. Winds will peak in the evening and overnight periods, while lulling during the day.
the approximate shoreward edge of the gulf stream as of june 13 - .
18 nm southwest of dry tortugas light - .on loggerhead key. 36 nm south of cosgrove shoal light - .off the marquesas keys. 33 nm south of sand key light - .off key west. 39 nm south of looe key - .off big pine key. 25 nm south of sombrero key light - .off marathon. 11 nm southeast of alligator reef light - .off islamorada. 5 nm southeast of molasses reef light - .off key largo. 5 nm east of carysfort reef light - .off ocean reef.
gulf stream information courtesy of the national weather service in key west based on products from nasa sport.
the approximate shoreward edge of the gulf stream as of june 13 - .
18 nm southwest of dry tortugas light - .on loggerhead key. 36 nm south of cosgrove shoal light - .off the marquesas keys. 33 nm south of sand key light - .off key west. 39 nm south of looe key - .off big pine key. 25 nm south of sombrero key light - .off marathon. 11 nm southeast of alligator reef light - .off islamorada. 5 nm southeast of molasses reef light - .off key largo. 5 nm east of carysfort reef light - .off ocean reef.
gulf stream information courtesy of the national weather service in key west based on products from nasa sport.
7 Day Forecast for Marine Location Near Key Colony Beach, FL
NEW! Add second zone forecast
| Boot Key Harbor Click for Map Wed -- 01:08 AM EDT Moonrise Wed -- 03:00 AM EDT 1.46 feet High Tide Wed -- 06:35 AM EDT Sunrise Wed -- 09:01 AM EDT 0.52 feet Low Tide Wed -- 01:20 PM EDT Moonset Wed -- 02:51 PM EDT 1.51 feet High Tide Wed -- 03:20 PM EDT Last Quarter Wed -- 08:15 PM EDT Sunset Wed -- 09:21 PM EDT 0.28 feet Low Tide Tide / Current data from XTide NOT FOR NAVIGATION |
Boot Key Harbor, Vaca Key, Florida, Tide feet
| 12 am |
| 0.8 |
| 1 am |
| 1.2 |
| 2 am |
| 1.4 |
| 3 am |
| 1.5 |
| 4 am |
| 1.4 |
| 5 am |
| 1.2 |
| 6 am |
| 1 |
| 7 am |
| 0.7 |
| 8 am |
| 0.6 |
| 9 am |
| 0.5 |
| 10 am |
| 0.6 |
| 11 am |
| 0.8 |
| 12 pm |
| 1 |
| 1 pm |
| 1.3 |
| 2 pm |
| 1.5 |
| 3 pm |
| 1.5 |
| 4 pm |
| 1.4 |
| 5 pm |
| 1.2 |
| 6 pm |
| 0.9 |
| 7 pm |
| 0.6 |
| 8 pm |
| 0.4 |
| 9 pm |
| 0.3 |
| 10 pm |
| 0.3 |
| 11 pm |
| 0.5 |
| Moser Channel (swingbridge) Click for Map Wed -- 12:02 AM EDT 0.00 knots Slack Wed -- 01:08 AM EDT Moonrise Wed -- 02:37 AM EDT 1.23 knots Max Flood Wed -- 05:49 AM EDT -0.00 knots Slack Wed -- 06:35 AM EDT Sunrise Wed -- 09:09 AM EDT -1.73 knots Max Ebb Wed -- 12:39 PM EDT 0.00 knots Slack Wed -- 01:20 PM EDT Moonset Wed -- 03:16 PM EDT 1.25 knots Max Flood Wed -- 03:20 PM EDT Last Quarter Wed -- 06:37 PM EDT -0.00 knots Slack Wed -- 08:16 PM EDT Sunset Wed -- 09:44 PM EDT -1.54 knots Max Ebb Tide / Current data from XTide NOT FOR NAVIGATION |
Moser Channel (swingbridge), Florida Current, knots
| 12 am |
| -0 |
| 1 am |
| 0.7 |
| 2 am |
| 1.2 |
| 3 am |
| 1.2 |
| 4 am |
| 0.9 |
| 5 am |
| 0.5 |
| 6 am |
| -0.1 |
| 7 am |
| -0.8 |
| 8 am |
| -1.5 |
| 9 am |
| -1.7 |
| 10 am |
| -1.6 |
| 11 am |
| -1.2 |
| 12 pm |
| -0.5 |
| 1 pm |
| 0.3 |
| 2 pm |
| 0.9 |
| 3 pm |
| 1.2 |
| 4 pm |
| 1.2 |
| 5 pm |
| 0.9 |
| 6 pm |
| 0.4 |
| 7 pm |
| -0.3 |
| 8 pm |
| -1 |
| 9 pm |
| -1.4 |
| 10 pm |
| -1.5 |
| 11 pm |
| -1.3 |
FXUS62 KKEY 181449 AFDKEY
Area Forecast Discussion National Weather Service Key West FL 1049 AM EDT Wed Jun 18 2025
New DISCUSSION, MARINE, AVIATION
DISCUSSION
Issued at 1050 AM EDT Wed Jun 18 2025 Surface analysis places an expansive area of high pressure extending across the southern half of the North Atlantic, with its latitudinal axis intersecting north-central Florida. This continues to place the Florida Keys in the southwestern quadrant of the high, with associated gentle to moderate east to southeast breezes. The 12z morning sounding at KEY sampled an adiabatically well-mixed layer from the surface to around 950 mb, with a stable, isothermal layer just above up to around 900 mb. Any isolated shower or thunderstorm activity today will likely be generated by low speed convergence off the very warm ocean temperatures. The forecast yet again calls for slight rain and thunder chances for the balance of today, which is supported by nearby KAMX Doppler radar trends. No changes proposed to the inherited short-term forecast for this morning update cycle.
MARINE
Issued at 1050 AM EDT Wed Jun 18 2025 No watches, warnings, or advisories are currently in effect for the Florida Keys waters. From synopsis, Atlantic ridging will remain across the Florida Peninsula through Sunday. This will support moderate to occasionally fresh east to southeast breezes and isolated, fast- moving showers and thunderstorms at times.
Winds will peak in the evening and overnight periods, while lulling during the day.
AVIATION
(15Z TAFS)
Issued at 1050 AM EDT Wed Jun 18 2025 Although an isolated passing shower or thunderstorm cannot be ruled out at in the vicinity of either terminal, coverage and lack of certainty in any timing warrants keeping out of the TAFs at this time. Near-surface winds will remain out of the east to southeast at 10 to 12 knots, occasionally gusting to near 18 knots.
PRELIMINARY POINT TEMPS/POPS
Key West 91 82 91 82 / 20 20 30 20 Marathon 88 82 88 82 / 20 20 30 20
KEY WATCHES/WARNINGS/ADVISORIES
FL...None.
GM...None.
Area Forecast Discussion National Weather Service Key West FL 1049 AM EDT Wed Jun 18 2025
New DISCUSSION, MARINE, AVIATION
DISCUSSION
Issued at 1050 AM EDT Wed Jun 18 2025 Surface analysis places an expansive area of high pressure extending across the southern half of the North Atlantic, with its latitudinal axis intersecting north-central Florida. This continues to place the Florida Keys in the southwestern quadrant of the high, with associated gentle to moderate east to southeast breezes. The 12z morning sounding at KEY sampled an adiabatically well-mixed layer from the surface to around 950 mb, with a stable, isothermal layer just above up to around 900 mb. Any isolated shower or thunderstorm activity today will likely be generated by low speed convergence off the very warm ocean temperatures. The forecast yet again calls for slight rain and thunder chances for the balance of today, which is supported by nearby KAMX Doppler radar trends. No changes proposed to the inherited short-term forecast for this morning update cycle.
MARINE
Issued at 1050 AM EDT Wed Jun 18 2025 No watches, warnings, or advisories are currently in effect for the Florida Keys waters. From synopsis, Atlantic ridging will remain across the Florida Peninsula through Sunday. This will support moderate to occasionally fresh east to southeast breezes and isolated, fast- moving showers and thunderstorms at times.
Winds will peak in the evening and overnight periods, while lulling during the day.
AVIATION
(15Z TAFS)
Issued at 1050 AM EDT Wed Jun 18 2025 Although an isolated passing shower or thunderstorm cannot be ruled out at in the vicinity of either terminal, coverage and lack of certainty in any timing warrants keeping out of the TAFs at this time. Near-surface winds will remain out of the east to southeast at 10 to 12 knots, occasionally gusting to near 18 knots.
PRELIMINARY POINT TEMPS/POPS
Key West 91 82 91 82 / 20 20 30 20 Marathon 88 82 88 82 / 20 20 30 20
KEY WATCHES/WARNINGS/ADVISORIES
FL...None.
GM...None.
Wind History for Vaca Key, FL
toggle option: (graph/table)
Link to 1 hour of 5 minute data for KMTH
Terminal Aerodrome Forecast (TAF) for KMTH
Wind History Graph: MTH
(wind in knots)
GEOS Local Image of Southeast
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Key West, FL,
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