Marine Weather and Tide Forecast for Marathon, FL
July 8, 2024 11:22 AM EDT (15:22 UTC) Change Location
 | Sunrise 6:43 AM Sunset 8:20 PM Moonrise 8:04 AM Moonset 9:37 PM |
GMZ043 Expires:202407082100;;665130 Fzus52 Kkey 081424 Cwfkey
coastal waters forecast for the florida keys national weather service key west fl 1024 am edt Mon jul 8 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.
gmz042>044-082100- 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- 1024 am edt Mon jul 8 2024
This afternoon - Southeast to south winds 10 to 15 knots early, becoming east to southeast 5 to 10 knots. Seas 1 to 2 feet, subsiding to around 1 foot. NEarshore waters a light to moderate chop, becoming smooth to a light chop.
Tonight - East to southeast winds 5 to 10 knots, increasing to near 10 knots. Seas around 1 foot, building to 1 to 2 feet. NEarshore waters smooth to a light chop, becoming a light chop.
Tuesday - East to southeast winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Isolated showers.
Tuesday night - East to southeast winds 10 to 15 knots. Seas 1 to 3 feet. NEarshore waters a light to moderate chop. Isolated showers and Thunderstorms.
Wednesday - East to southeast winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Scattered showers and isolated Thunderstorms.
Wednesday night - East winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Scattered showers and isolated Thunderstorms.
Thursday - Northeast to east winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Scattered showers and isolated Thunderstorms.
Thursday night - East winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Scattered showers and isolated Thunderstorms.
Friday and Friday night - East winds 10 to 15 knots. Seas 2 to 3 feet. NEarshore waters a light to moderate chop. Scattered showers and isolated Thunderstorms.
coastal waters forecast for the florida keys national weather service key west fl 1024 am edt Mon jul 8 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.
gmz042>044-082100- 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- 1024 am edt Mon jul 8 2024
GMZ005 Synopsis For Keys Coastal Waters From Ocean Reef To Dry Tortugas 1024 Am Edt Mon Jul 8 2024
Synopsis - Gentle southeast to south breezes will become east to southeast across the florida keys coastal waters this afternoon and evening. High pressure will build westward across the florida peninsula and into the gulf tonight through the rest of the week, bringing gentle to occasionally moderate easterly breezes to the keys waters for Tuesday through Friday.
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 081435 AFDKEY
Area Forecast Discussion National Weather Service Key West FL 1035 AM EDT Mon Jul 8 2024
New DISCUSSION, MARINE, AVIATION
DISCUSSION
Issued at 1034 AM EDT Mon Jul 8 2024
A very quiet but muggy start to the day across the Florida Keys.
Substantial dry air is moving into the region as noted in our sounding this morning between 850 and 650 mb. This dry air is the leading edge of a Saharan Air Layer that is working it's way westward across the Lesser Antilles and Bahamas. This unsurprisingly has shut down almost all rain chances. Currently KBYX radar shows no precipitation echoes in our immediate vicinity. Satellite representation is a a little different. It would seem that as the leading edge of the dry layer approaches, a mid deck of clouds has sprouted but this will be brief.
The lack of clouds, a light southeasterly wind, and dew points in the upper 70s will lead to heat indices between 108 and 112 degrees today. As such a Heat Advisory remains in effect for the Florida Keys. Extra precaution should be taken today to reduce the risk of heal-related illnesses. With the dry air in place, near nil rain chances will persist through the remainder of the day.
Therefore, no changes needed at this time.
MARINE
Issued at 1034 AM EDT Mon Jul 8 2024
No watches, warnings, or advisories are in effect. Gentle to occasionally moderate southeasterly breezes will slacken through this afternoon. High pressure will build westward across the Florida Peninsula and into the Gulf tonight through the rest of the week, bringing gentle to occasionally moderate easterly breezes to the Keys waters for Tuesday through Friday.
AVIATION
(15Z TAFS)
Issued at 1034 AM EDT Mon Jul 8 2024
VFR conditions will prevail at both island terminals, as rain chances today and tonight are slight at best. Surface winds will be from the southeast at 5 to 10 knots.
CLIMATE
On this day in 1957, the daily record high temperature of 95F was recorded in Key West. Temperature records for Key West date back to 1872.
KEY WATCHES/WARNINGS/ADVISORIES
FL...Heat Advisory until 6 PM EDT this evening for FLZ076>078.
GM...None.
Area Forecast Discussion National Weather Service Key West FL 1035 AM EDT Mon Jul 8 2024
New DISCUSSION, MARINE, AVIATION
DISCUSSION
Issued at 1034 AM EDT Mon Jul 8 2024
A very quiet but muggy start to the day across the Florida Keys.
Substantial dry air is moving into the region as noted in our sounding this morning between 850 and 650 mb. This dry air is the leading edge of a Saharan Air Layer that is working it's way westward across the Lesser Antilles and Bahamas. This unsurprisingly has shut down almost all rain chances. Currently KBYX radar shows no precipitation echoes in our immediate vicinity. Satellite representation is a a little different. It would seem that as the leading edge of the dry layer approaches, a mid deck of clouds has sprouted but this will be brief.
The lack of clouds, a light southeasterly wind, and dew points in the upper 70s will lead to heat indices between 108 and 112 degrees today. As such a Heat Advisory remains in effect for the Florida Keys. Extra precaution should be taken today to reduce the risk of heal-related illnesses. With the dry air in place, near nil rain chances will persist through the remainder of the day.
Therefore, no changes needed at this time.
MARINE
Issued at 1034 AM EDT Mon Jul 8 2024
No watches, warnings, or advisories are in effect. Gentle to occasionally moderate southeasterly breezes will slacken through this afternoon. High pressure will build westward across the Florida Peninsula and into the Gulf tonight through the rest of the week, bringing gentle to occasionally moderate easterly breezes to the Keys waters for Tuesday through Friday.
AVIATION
(15Z TAFS)
Issued at 1034 AM EDT Mon Jul 8 2024
VFR conditions will prevail at both island terminals, as rain chances today and tonight are slight at best. Surface winds will be from the southeast at 5 to 10 knots.
CLIMATE
On this day in 1957, the daily record high temperature of 95F was recorded in Key West. Temperature records for Key West date back to 1872.
KEY WATCHES/WARNINGS/ADVISORIES
FL...Heat Advisory until 6 PM EDT this evening for FLZ076>078.
GM...None.
toggle option: (graph/table)
Link to 1 hour of 5 minute data for KMTH
Terminal Aerodrome Forecast (TAF) for KMTH
toggle option: (graph/table)
Terminal Aerodrome Forecast (TAF) for KMTH
Wind History graph: MTH
(wind in knots)Vaca Key-Fat Deer Key bridge
Click for Map
Mon -- 04:32 AM EDT 0.32 feet Low Tide
Mon -- 06:41 AM EDT Sunrise
Mon -- 09:03 AM EDT Moonrise
Mon -- 10:42 AM EDT 1.91 feet High Tide
Mon -- 06:14 PM EDT -0.07 feet Low Tide
Mon -- 08:17 PM EDT Sunset
Mon -- 10:37 PM EDT Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 04:32 AM EDT 0.32 feet Low Tide
Mon -- 06:41 AM EDT Sunrise
Mon -- 09:03 AM EDT Moonrise
Mon -- 10:42 AM EDT 1.91 feet High Tide
Mon -- 06:14 PM EDT -0.07 feet Low Tide
Mon -- 08:17 PM EDT Sunset
Mon -- 10:37 PM EDT Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Vaca Key-Fat Deer Key bridge, Florida, Tide feet
| 12 am |
| 1 |
| 1 am |
| 0.9 |
| 2 am |
| 0.7 |
| 3 am |
| 0.5 |
| 4 am |
| 0.3 |
| 5 am |
| 0.3 |
| 6 am |
| 0.5 |
| 7 am |
| 0.9 |
| 8 am |
| 1.3 |
| 9 am |
| 1.6 |
| 10 am |
| 1.9 |
| 11 am |
| 1.9 |
| 12 pm |
| 1.8 |
| 1 pm |
| 1.5 |
| 2 pm |
| 1.1 |
| 3 pm |
| 0.7 |
| 4 pm |
| 0.3 |
| 5 pm |
| 0 |
| 6 pm |
| -0.1 |
| 7 pm |
| -0 |
| 8 pm |
| 0.2 |
| 9 pm |
| 0.5 |
| 10 pm |
| 0.8 |
| 11 pm |
| 1 |
Moser Channel (swingbridge)
Click for Map
Mon -- 02:30 AM EDT -0.00 knots Slack
Mon -- 05:27 AM EDT -1.61 knots Max Ebb
Mon -- 06:42 AM EDT Sunrise
Mon -- 08:37 AM EDT 0.00 knots Slack
Mon -- 09:04 AM EDT Moonrise
Mon -- 11:06 AM EDT 1.11 knots Max Flood
Mon -- 01:59 PM EDT -0.00 knots Slack
Mon -- 05:25 PM EDT -2.05 knots Max Ebb
Mon -- 08:17 PM EDT Sunset
Mon -- 08:53 PM EDT 0.00 knots Slack
Mon -- 10:37 PM EDT Moonset
Mon -- 11:44 PM EDT 1.53 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 02:30 AM EDT -0.00 knots Slack
Mon -- 05:27 AM EDT -1.61 knots Max Ebb
Mon -- 06:42 AM EDT Sunrise
Mon -- 08:37 AM EDT 0.00 knots Slack
Mon -- 09:04 AM EDT Moonrise
Mon -- 11:06 AM EDT 1.11 knots Max Flood
Mon -- 01:59 PM EDT -0.00 knots Slack
Mon -- 05:25 PM EDT -2.05 knots Max Ebb
Mon -- 08:17 PM EDT Sunset
Mon -- 08:53 PM EDT 0.00 knots Slack
Mon -- 10:37 PM EDT Moonset
Mon -- 11:44 PM EDT 1.53 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Moser Channel (swingbridge), Florida Current, knots
| 12 am |
| 1.6 |
| 1 am |
| 1.2 |
| 2 am |
| 0.5 |
| 3 am |
| -0.4 |
| 4 am |
| -1.2 |
| 5 am |
| -1.6 |
| 6 am |
| -1.6 |
| 7 am |
| -1.2 |
| 8 am |
| -0.5 |
| 9 am |
| 0.3 |
| 10 am |
| 0.9 |
| 11 am |
| 1.1 |
| 12 pm |
| 1 |
| 1 pm |
| 0.6 |
| 2 pm |
| -0 |
| 3 pm |
| -0.8 |
| 4 pm |
| -1.6 |
| 5 pm |
| -2 |
| 6 pm |
| -2 |
| 7 pm |
| -1.6 |
| 8 pm |
| -0.8 |
| 9 pm |
| 0.1 |
| 10 pm |
| 1 |
| 11 pm |
| 1.4 |
Key West, FL,
NOTICE: Some pages have affiliate links to Amazon. As an Amazon Associate, I earn from qualifying purchases. Please read website Cookie, Privacy, and Disclamers by clicking HERE. To contact me click HERE. For my YouTube page click HERE