Big Coppitt Key, FL Marine Weather and Tide Forecast
L-36.com

Marine Weather and Tide Forecast for Big Coppitt Key, FL

April 21, 2024 8:29 AM EDT (12:29 UTC) Change Location
Sunrise 6:58 AM   Sunset 7:53 PM
Moonrise 5:06 PM   Moonset 4:39 AM 
  Print   HELP   Reset   Save   Recall

NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

Top   Marine   7-Day   NWS   Buoy   Airport   Tide   Map   GEOS   Radar  


Marine Forecasts
    EDIT      Help
GMZ035 Expires:202404211430;;119785 Fzus52 Kkey 210902 Cca Cwfkey
coastal waters forecast for the florida keys - .corrected national weather service key west fl 502 am edt Sun apr 21 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.
gmz032-035-211430- bayside and gulf side from craig key to west end of seven mile bridge- gulf of mexico from west end of seven mile bridge to halfmoon shoal out to 5 fathoms- 502 am edt Sun apr 21 2024

Today - Southeast winds 10 to 15 knots, decreasing to 5 to 10 knots in the afternoon. Seas 1 to 2 feet, subsiding to 1 foot or less. NEarshore waters a light to moderate chop, becoming smooth to a light chop.

Tonight - Southeast to south winds near 5 knots. Seas 1 foot or less. NEarshore waters smooth.

Monday - Southwest to west winds 5 to 10 knots, becoming northwest 10 to 15 knots in the afternoon. Seas 1 foot or less, building to 1 to 2 feet. NEarshore waters smooth to a light chop, becoming a light to moderate chop.

Monday night - Northwest to north winds near 15 knots, becoming north to northeast after midnight. Seas 1 to 3 feet, except 2 to 3 feet west of the marquesas keys. NEarshore waters a moderate chop.

Tuesday - Northeast winds near 15 knots, becoming northeast to east. Seas 1 to 3 feet. NEarshore waters a moderate chop. Isolated showers.

Tuesday night - Northeast to east winds near 15 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the marquesas keys. NEarshore waters a moderate chop. Isolated showers.

Wednesday through Thursday - East winds near 15 knots. Seas 1 to 2 feet. NEarshore waters a moderate chop. Isolated showers.

Thursday night - East winds 15 to 20 knots. Seas 1 to 2 feet, except 2 to 3 feet west of the marquesas keys. NEarshore waters choppy.

GMZ005 Synopsis For Keys Coastal Waters From Ocean Reef To Dry Tortugas 502 Am Edt Sun Apr 21 2024

Synopsis - High pressure over the western north atlantic will retreat farther offshore today, with southeasterly breezes slackening across the florida keys coastal waters. Light to gentle southeast to south breezes tonight into Monday will become moderate from the northwest to north Monday afternoon and evening, as a weak frontal boundary slides through south florida and the keys. High pressure over the southeastern states will bring moderate easterly breezes back to the keys waters by the middle of the week, with fresh breezes developing later in the week.
the approximate shoreward edge of the gulf stream is currently unavailable.


7 Day Forecast for Marine Location Near Big Coppitt Key, FL
   Hourly   EDIT   Help   Map
NEW! Add second zone forecast


Area Discussion for - Key West, FL
      (hide/show)   Help   
NOTE: mouseover dotted underlined text for definition
FXUS62 KKEY 210830 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 430 AM EDT Sun Apr 21 2024

New DISCUSSION, MARINE, AVIATION

DISCUSSION
Issued at 430 AM EDT Sun Apr 21 2024

Mostly clear, mild and dry conditions prevail along the Florida Keys on this early Sunday morning, with radars detecting no precipitation across the region. Temperatures are hovering in the mid to upper 70s, with dewpoints in the upper 60s to near 70, and winds on land from the southeast at 10 to 15 mph. Surface analysis depicts weak high pressure over the western Atlantic, with a frontal boundary draped from the Carolinas across South Georgia and along the northern Gulf Coast. Aloft, a lower to mid level ridge persists over the SE Gulf, and continues to control the weather regime across South Florida and the Keys. Further north, deep westerly flow prevails across the eastern CONUS, with the upper level subtropical ridge suppressed far southward into the Caribbean Sea. The 00Z Key West sounding reflected the influence of the nearby ridge, with a couple of inversions below 850 mb, PW of 1.13 inches, and very dry lower to mid levels above the inversion. More recent MIMIC-TPW satellite imagery shows similar estimated PWs across our region, with higher PWs along the frontal zone in the northern Gulf, and confined far to our south over the Caribbean Sea.

Mostly sunny, dry and warm weather will prevail again today, as the lower to mid level ridge continues to squash any shower development. High temps will reach the mid 80s once again, with dewpoints in the upper 60s to near 70 keeping RHs somewhat in check.

A shortwave trough moving across the Southeastern states will finally displace the lower-mid level ridge SW to near the Yucatan tonight and Monday. This will allow the late season surface front to slide through South Florida and the Keys Monday afternoon/evening. While scattered showers and even some strong storms are expected further north over the peninsula Monday afternoon into the evening as this front moves through, it appears that lack of available moisture and unfavorable difluent low level flow should keep the Keys dry. We will keep an eye on the far Upper Keys during the late afternoon and early evening hours, when convection will probably be sliding offshore from Miami-Dade County into the Atlantic waters. Following the frontal passage, we expect legitimate northerly winds Monday night, although temps and dewpoints will drop only a couple of degrees.

The forecast becomes more a bit murky heading into the middle of the week, with a zonal flow pattern over the Gulf and Florida suppressing the subtropical ridge to our south at all levels, and sufficient lingering moisture to allow for at least isolated showers. The latest guidance is less emphatic with a weak mid level disturbance moving across the Gulf on Tuesday and through the Keys Tuesday night. While a renegade MCS is always possible with these synoptic patterns in late April, for now will continue with just slight 10 to 20 percent shower chances from Tuesday through Wednesday night. A drier airmass should spread back into our area later in the week, as ridging aloft rebuilds over the Gulf. Temps will remain near normal, with highs in the lower to mid 80s and lows in the mid 70s. Dewpoints should hold in the mid to upper 60s through the week, along with increasing easterly breezes beginning around midweek, therefore outdoor conditions will remain quite pleasant for late April.

MARINE
Issued at 430 AM EDT Sun Apr 21 2024

Overnight observations show SE winds of 10 to 14 knots along the reef and at Long Key C-MAN, with seas at Satan Shoal running between 2.5 and 3 feet. No marine headlines are currently in effect, and none are expected through Monday morning. There is some potential for a period of Small Craft Exercise Caution late Monday and Monday night as NW/N winds increase behind a front moving through the Keys waters. From the synopsis, high pressure over the western North Atlantic will retreat farther offshore today, with southeasterly breezes slackening across the Florida Keys coastal waters. Gentle southeast to south breezes tonight into Monday will become moderate from the northwest to north Monday afternoon and evening, as a weak frontal boundary slides through South Florida and the Keys. High pressure over the Southeastern states will bring moderate easterly breezes back to the Keys waters by the middle of the week, with fresh breezes developing later in the week.

AVIATION
(06Z TAFS)
Issued at 430 AM EDT Sun Apr 21 2024

VFR and dry conditions will prevail at the EYW and MTH terminals through the TAF period. Near surface winds will remain from the southeast near 10 knots today, decreasing to around 5 knots this evening.

CLIMATE
On this day in 2012, the daily record rainfall of 1.99 inches was recorded in Key West. Precipitation records for Key West date back to 1871.

KEY WATCHES/WARNINGS/ADVISORIES
FL...None.
GM...None.




Weather Reporting Stations
   EDIT       (hide/show)   Help
Stations Dist Age Wind Air TempWater Temp WavesinHgDewPt
KYWF1 - 8724580 - Key West, FL 15 mi71 min SE 8G12 77°F 79°F29.99
SANF1 - Sand Key, FL 20 mi59 min SSE 14G17 77°F 29.9869°F
SMKF1 - Sombrero Key, FL 23 mi59 min 29.97
42095 25 mi59 min 78°F 79°F3 ft
VCAF1 - 8723970 - Vaca Key, FL 25 mi71 min SSE 5.1G6 76°F 81°F
LONF1 - Long Key, FL 41 mi59 min SSE 11G13 77°F 29.9768°F


Wind History for Key West, FL
(wind in knots)    EDIT      (hide/show)   Help
toggle option: (graph/table)



Airport Reports
    EDIT      (hide/show)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisSkyWeatherTempDewPtRHinHg
KNQX KEY WEST NAS /BOCA CHICA FIELD/,FL 9 sm36 minSE 1110 smClear79°F72°F79%29.99
KEYW KEY WEST INTL,FL 12 sm36 minSE 1110 smClear79°F70°F74%29.99
Link to 5 minute data for KNQX


Wind History from NQX
(wind in knots)
toggle option: (graph/table)


Tide / Current for Key Lois, southeast end, Florida
   
EDIT   Weekend mode (on/off)   (hide/show)   Help
Key Lois
Click for Map
Sun -- 02:10 AM EDT     0.19 feet Low Tide
Sun -- 05:38 AM EDT     Moonset
Sun -- 06:58 AM EDT     Sunrise
Sun -- 08:01 AM EDT     1.57 feet High Tide
Sun -- 02:38 PM EDT     0.00 feet Low Tide
Sun -- 06:05 PM EDT     Moonrise
Sun -- 07:51 PM EDT     Sunset
Sun -- 08:40 PM EDT     1.45 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Key Lois, southeast end, Florida, Tide feet
12
am
0.5
1
am
0.3
2
am
0.2
3
am
0.3
4
am
0.5
5
am
0.9
6
am
1.2
7
am
1.5
8
am
1.6
9
am
1.5
10
am
1.3
11
am
0.9
12
pm
0.6
1
pm
0.2
2
pm
0
3
pm
0
4
pm
0.2
5
pm
0.5
6
pm
0.9
7
pm
1.2
8
pm
1.4
9
pm
1.4
10
pm
1.3
11
pm
1.1



Tide / Current for Bahia Honda Harbor (Bridge) Florida Current
   EDIT      (hide/show)   Help
Bahía Honda Harbor (Bridge) Florida Current
Click for Map
Sun -- 01:43 AM EDT     -2.22 knots Max Ebb
Sun -- 05:02 AM EDT     0.00 knots Slack
Sun -- 05:38 AM EDT     Moonset
Sun -- 06:57 AM EDT     Sunrise
Sun -- 07:43 AM EDT     1.22 knots Max Flood
Sun -- 10:22 AM EDT     -0.00 knots Slack
Sun -- 01:49 PM EDT     -2.22 knots Max Ebb
Sun -- 05:02 PM EDT     0.00 knots Slack
Sun -- 06:04 PM EDT     Moonrise
Sun -- 07:50 PM EDT     Sunset
Sun -- 07:54 PM EDT     1.61 knots Max Flood
Sun -- 10:54 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Bahia Honda Harbor (Bridge) Florida Current, knots
12
am
-1.6
1
am
-2.1
2
am
-2.2
3
am
-1.8
4
am
-1
5
am
-0
6
am
0.7
7
am
1.1
8
am
1.2
9
am
1
10
am
0.3
11
am
-0.6
12
pm
-1.5
1
pm
-2.1
2
pm
-2.2
3
pm
-1.9
4
pm
-1.1
5
pm
-0
6
pm
0.9
7
pm
1.5
8
pm
1.6
9
pm
1.4
10
pm
0.8
11
pm
-0.1




Weather Map
       (hide/show)   Help


GEOS Local Image of gulf of mexico   
EDIT



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