Marine Weather and Tide Forecast for Marathon, FL
July 5, 2024 10:22 AM EDT (14:22 UTC) Change Location
 | Sunrise 6:42 AM Sunset 8:21 PM Moonrise 5:05 AM Moonset 7:30 PM |
GMZ053 Expires:202407051445;;478059 Fzus52 Kkey 050834 Cwfkey
coastal waters forecast for the florida keys national weather service key west fl 434 am edt Fri jul 5 2024
florida bay, hawk channel and straits of florida from ocean reef to south of dry tortugas, and the extreme southeastern gulf of mexico, 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>075-051445- 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- 434 am edt Fri jul 5 2024
Today - East to southeast winds 10 to 15 knots, decreasing to near 10 knots. Seas 2 to 3 feet. Wave detail: east to southeast 2 feet at 4 seconds. Isolated showers and Thunderstorms.
Tonight - East to southeast winds near 10 knots, decreasing to 5 to 10 knots. Seas 1 to 2 feet. Wave detail: east 1 foot at 4 seconds. Isolated showers and Thunderstorms.
Saturday - East to southeast winds near 5 knots. Seas around 1 foot. Wave detail: east to southeast 1 foot at 4 seconds. Isolated showers and Thunderstorms.
Saturday night - East to southeast winds 5 to 10 knots. Seas around 1 foot. Isolated showers and Thunderstorms.
Sunday - Southeast to south winds 5 to 10 knots, increasing to near 10 knots. Seas 1 to 2 feet. Scattered showers and isolated Thunderstorms.
Sunday night - Southeast to south winds 10 to 15 knots. Seas 1 to 2 feet. Scattered showers and isolated Thunderstorms.
Monday - Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers and isolated Thunderstorms.
Monday night - East to southeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Isolated showers and Thunderstorms.
Tuesday and Tuesday night - East to southeast winds near 15 knots. Seas 3 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 434 am edt Fri jul 5 2024
florida bay, hawk channel and straits of florida from ocean reef to south of dry tortugas, and the extreme southeastern gulf of mexico, 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>075-051445- 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- 434 am edt Fri jul 5 2024
GMZ005 Synopsis For Keys Coastal Waters From Ocean Reef To Dry Tortugas 434 Am Edt Fri Jul 5 2024
Synopsis - Light to gentle east to southeast breezes will continue into the weekend as high pressure settles in over the area. These gentle breezes will nudge to the southeast and south on Sunday before returning back to a more easterly direction and become gentle to moderate on Monday and Tuesday.
the approximate shoreward edge of the gulf stream as of july 3 - .
50 nm south of dry tortugas light - .on loggerhead key. 34 nm south of cosgrove shoal light - .off the marquesas keys. 30 nm south of sand key light - .off key west. 6 nm south of looe key - .off big pine key. 7 nm south of sombrero key light - .off marathon. 5 nm southeast of alligator reef light - .off islamorada. 2 nm southeast of molasses reef light - .off key largo.
gulf stream information courtesy of the national weather service in key west.
the approximate shoreward edge of the gulf stream as of july 3 - .
50 nm south of dry tortugas light - .on loggerhead key. 34 nm south of cosgrove shoal light - .off the marquesas keys. 30 nm south of sand key light - .off key west. 6 nm south of looe key - .off big pine key. 7 nm south of sombrero key light - .off marathon. 5 nm southeast of alligator reef light - .off islamorada. 2 nm southeast of molasses reef light - .off key largo.
gulf stream information courtesy of the national weather service in key west.
FXUS62 KKEY 050910 AFDKEY
Area Forecast Discussion National Weather Service Key West FL 510 AM EDT Fri Jul 5 2024
New DISCUSSION, MARINE, AVIATION
DISCUSSION
Issued at 333 AM EDT Fri Jul 5 2024 High clouds are stretching across the forecast area this morning, but the lack of meteorological returns on radar means everyone will be waking up to a dry morning along the Keys. High pressure that is enveloping the region will prevent any large scale ascent, and we are still opting to keep PoPs at 20% as we head into the weekend since we can't rule out smaller scale ascent such as converging breezes or boundaries. The combination of high temperatures near 90F and dew points in the upper 70s will lead to heat indices climbing into the low 100s during the afternoon, and this looks to be the case for the next few days since the high pressure doesn't seem to be going anywhere just yet.
There is still some uncertainty as to how the pattern changes over the first half of next week. Guidance continues to show back to back tropical waves approaching Florida, which would bring a surge of moisture and provide ascent to trigger showers and thunderstorms. The finer details such as areal coverage, rainfall totals, wind speeds, etc still have much uncertainty behind them due to model disagreement. The overall message of a possibly wet first half of the week is what we will continue to advertise. Once guidance gets a better handle on the evolution of the pattern, then we will be able to hone in on what kind of impacts, if any, we could see from the uptick in active weather.
MARINE
Issued at 333 AM EDT Fri Jul 5 2024 Light to gentle east to southeast breezes will continue into the weekend as high pressure settles in over the area. These gentle breezes will nudge to the southeast and south on Sunday before returning back to a more easterly direction and become gentle to moderate on Monday and Tuesday.
AVIATION
(06Z TAFS)
Issued at 333 AM EDT Fri Jul 5 2024 VFR conditions will prevail through Friday evening at the EYW and MTH terminals. Only isolated showers at most are expected during the day, however more substantial convection may move SSW from the Everglades and approach the terminals during the evening. Confidence in this scenario is too low to mention in the TAFs at this time.
Surface winds will remain from the E to SE at 5 to 10 knots.
PRELIMINARY POINT TEMPS/POPS
Key West 91 83 90 83 / 20 20 20 20 Marathon 90 82 90 83 / 20 20 20 20
KEY WATCHES/WARNINGS/ADVISORIES
FL...None.
GM...None.
Area Forecast Discussion National Weather Service Key West FL 510 AM EDT Fri Jul 5 2024
New DISCUSSION, MARINE, AVIATION
DISCUSSION
Issued at 333 AM EDT Fri Jul 5 2024 High clouds are stretching across the forecast area this morning, but the lack of meteorological returns on radar means everyone will be waking up to a dry morning along the Keys. High pressure that is enveloping the region will prevent any large scale ascent, and we are still opting to keep PoPs at 20% as we head into the weekend since we can't rule out smaller scale ascent such as converging breezes or boundaries. The combination of high temperatures near 90F and dew points in the upper 70s will lead to heat indices climbing into the low 100s during the afternoon, and this looks to be the case for the next few days since the high pressure doesn't seem to be going anywhere just yet.
There is still some uncertainty as to how the pattern changes over the first half of next week. Guidance continues to show back to back tropical waves approaching Florida, which would bring a surge of moisture and provide ascent to trigger showers and thunderstorms. The finer details such as areal coverage, rainfall totals, wind speeds, etc still have much uncertainty behind them due to model disagreement. The overall message of a possibly wet first half of the week is what we will continue to advertise. Once guidance gets a better handle on the evolution of the pattern, then we will be able to hone in on what kind of impacts, if any, we could see from the uptick in active weather.
MARINE
Issued at 333 AM EDT Fri Jul 5 2024 Light to gentle east to southeast breezes will continue into the weekend as high pressure settles in over the area. These gentle breezes will nudge to the southeast and south on Sunday before returning back to a more easterly direction and become gentle to moderate on Monday and Tuesday.
AVIATION
(06Z TAFS)
Issued at 333 AM EDT Fri Jul 5 2024 VFR conditions will prevail through Friday evening at the EYW and MTH terminals. Only isolated showers at most are expected during the day, however more substantial convection may move SSW from the Everglades and approach the terminals during the evening. Confidence in this scenario is too low to mention in the TAFs at this time.
Surface winds will remain from the E to SE at 5 to 10 knots.
PRELIMINARY POINT TEMPS/POPS
Key West 91 83 90 83 / 20 20 20 20 Marathon 90 82 90 83 / 20 20 20 20
KEY WATCHES/WARNINGS/ADVISORIES
FL...None.
GM...None.
toggle option: (graph/table)
Link to 1 hour of 5 minute data for KMTH
Terminal Aerodrome Forecast (TAF) for KMTH
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Terminal Aerodrome Forecast (TAF) for KMTH
Wind History graph: MTH
(wind in knots)Vaca Key-Fat Deer Key bridge
Click for Map
Fri -- 02:10 AM EDT 0.37 feet Low Tide
Fri -- 06:05 AM EDT Moonrise
Fri -- 06:40 AM EDT Sunrise
Fri -- 08:33 AM EDT 2.09 feet High Tide
Fri -- 04:14 PM EDT -0.23 feet Low Tide
Fri -- 06:59 PM EDT New Moon
Fri -- 08:17 PM EDT Sunset
Fri -- 08:29 PM EDT Moonset
Fri -- 10:24 PM EDT 0.96 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 02:10 AM EDT 0.37 feet Low Tide
Fri -- 06:05 AM EDT Moonrise
Fri -- 06:40 AM EDT Sunrise
Fri -- 08:33 AM EDT 2.09 feet High Tide
Fri -- 04:14 PM EDT -0.23 feet Low Tide
Fri -- 06:59 PM EDT New Moon
Fri -- 08:17 PM EDT Sunset
Fri -- 08:29 PM EDT Moonset
Fri -- 10:24 PM EDT 0.96 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Vaca Key-Fat Deer Key bridge, Florida, Tide feet
| 12 am |
| 0.7 |
| 1 am |
| 0.5 |
| 2 am |
| 0.4 |
| 3 am |
| 0.5 |
| 4 am |
| 0.7 |
| 5 am |
| 1.1 |
| 6 am |
| 1.5 |
| 7 am |
| 1.9 |
| 8 am |
| 2.1 |
| 9 am |
| 2.1 |
| 10 am |
| 1.9 |
| 11 am |
| 1.6 |
| 12 pm |
| 1.1 |
| 1 pm |
| 0.6 |
| 2 pm |
| 0.2 |
| 3 pm |
| -0.1 |
| 4 pm |
| -0.2 |
| 5 pm |
| -0.2 |
| 6 pm |
| 0 |
| 7 pm |
| 0.3 |
| 8 pm |
| 0.6 |
| 9 pm |
| 0.8 |
| 10 pm |
| 0.9 |
| 11 pm |
| 0.9 |
Moser Channel (swingbridge)
Click for Map
Fri -- 12:38 AM EDT -0.00 knots Slack
Fri -- 03:36 AM EDT -1.60 knots Max Ebb
Fri -- 06:05 AM EDT Moonrise
Fri -- 06:38 AM EDT 0.00 knots Slack
Fri -- 06:40 AM EDT Sunrise
Fri -- 09:14 AM EDT 1.01 knots Max Flood
Fri -- 11:45 AM EDT -0.00 knots Slack
Fri -- 03:23 PM EDT -2.33 knots Max Ebb
Fri -- 06:49 PM EDT 0.00 knots Slack
Fri -- 06:59 PM EDT New Moon
Fri -- 08:17 PM EDT Sunset
Fri -- 08:30 PM EDT Moonset
Fri -- 10:07 PM EDT 1.89 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Fri -- 12:38 AM EDT -0.00 knots Slack
Fri -- 03:36 AM EDT -1.60 knots Max Ebb
Fri -- 06:05 AM EDT Moonrise
Fri -- 06:38 AM EDT 0.00 knots Slack
Fri -- 06:40 AM EDT Sunrise
Fri -- 09:14 AM EDT 1.01 knots Max Flood
Fri -- 11:45 AM EDT -0.00 knots Slack
Fri -- 03:23 PM EDT -2.33 knots Max Ebb
Fri -- 06:49 PM EDT 0.00 knots Slack
Fri -- 06:59 PM EDT New Moon
Fri -- 08:17 PM EDT Sunset
Fri -- 08:30 PM EDT Moonset
Fri -- 10:07 PM EDT 1.89 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Moser Channel (swingbridge), Florida Current, knots
| 12 am |
| 0.6 |
| 1 am |
| -0.3 |
| 2 am |
| -1.1 |
| 3 am |
| -1.5 |
| 4 am |
| -1.6 |
| 5 am |
| -1.2 |
| 6 am |
| -0.5 |
| 7 am |
| 0.3 |
| 8 am |
| 0.8 |
| 9 am |
| 1 |
| 10 am |
| 0.9 |
| 11 am |
| 0.5 |
| 12 pm |
| -0.2 |
| 1 pm |
| -1.1 |
| 2 pm |
| -1.9 |
| 3 pm |
| -2.3 |
| 4 pm |
| -2.2 |
| 5 pm |
| -1.8 |
| 6 pm |
| -0.9 |
| 7 pm |
| 0.2 |
| 8 pm |
| 1.1 |
| 9 pm |
| 1.7 |
| 10 pm |
| 1.9 |
| 11 pm |
| 1.7 |
Key West, FL,
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