Monday, October18, 2021
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Marine Weather and Tides
Big Coppitt Key, FL

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:25AMSunset 6:58PM Monday October 18, 2021 4:44 PM EDT (20:44 UTC) Moonrise 5:09PMMoonset 4:35AM Illumination 95% Phase: Waxing Gibbous; Moon at 13 days in cycle
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.
Marine Forecasts
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GMZ035 Expires:202110190230;;890134 Fzus52 Kkey 181908 Cwfkey Coastal Waters Forecast For The Florida Keys National Weather Service Key West Fl 308 Pm Edt Mon Oct 18 2021 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. Gmz032-035-190230- 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- 308 Pm Edt Mon Oct 18 2021
.small craft should exercise caution...
Tonight..Northeast to east winds 15 to 20 knots. Seas 1 to 3 feet. NEarshore waters choppy. Isolated showers.
Tuesday..Northeast to east winds 15 to 20 knots. Seas 1 to 3 feet. NEarshore waters choppy.
Tuesday night..Northeast to east winds 15 to 20 knots. Seas 1 to 3 feet. NEarshore waters choppy. Isolated showers.
Wednesday..Northeast to east winds 15 to 20 knots. Seas 1 to 3 feet. NEarshore waters choppy. Scattered showers.
Wednesday night..East winds 15 to 20 knots. Seas 1 to 3 feet, except around 4 feet west of the marquesas keys. NEarshore waters choppy. Scattered showers and isolated Thunderstorms.
Thursday..East winds 15 to 20 knots. Seas 1 to 3 feet. NEarshore waters choppy. Numerous showers and isolated Thunderstorms.
Thursday night through Friday night..East winds 15 to 20 knots. Seas 1 to 3 feet. NEarshore waters choppy. Scattered showers and isolated Thunderstorms.
Saturday..Northeast to east winds near 15 knots. Seas 1 to 2 feet. NEarshore waters a moderate chop. Scattered showers and isolated Thunderstorms.
Saturday night..Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. NEarshore waters a light to moderate chop. Scattered showers and isolated Thunderstorms.


7 Day Forecast for Marine Location Near Big Coppitt Key, FL
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location: 24.55, -81.53     debug


Area Discussion for - Key West, FL
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FXUS62 KKEY 181907 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 307 PM EDT Mon Oct 18 2021

DISCUSSION. Fresh northeast to east breezes are blowing across the Florida Keys and adjacent coastal waters this afternoon. Skies across the archipelago range from mostly sunny over the upper Keys to partly cloudy in the lower Keys. After a few morning downpours in some lower Keys communities (including Key West), isolated showers have shifted west and south of the islands. Mean sea level pressures have increased 1-2 millibars during the last 24 hours, indicative of the increasing influence of a high pressure cell currently centered over the Tennessee Valley. A disintegrating stationary front extends from the northern Bahamas westward over southern Florida and the southeastern Gulf of Mexico. This feature is associated with a diffuse baroclinic zone and a remnant plume of deeper moisture.

On the large scale, a moderate-amplitude progressive upper flow pattern prevails across North America, with a short-wave ridge over the central United States and a trough over the western North Atlantic. The ridge supports a lower-tropospheric anticyclone centered over the Tennessee Valley. During the next few days, the ridge and associated low-level anticyclone will shift gradually eastward. This evolution will result in slowly veering low-level flow, a gradual deepening of the moist layer, and eventually, increasingly confluent near-surface air trajectories. however, in the short range, a plume of modified continental air should filter in to the Florida Keys, resulting on a noticeable air mass change, lower dewpoint temperatures, and a 36-hour period of rain- free weather. Beginning about Wednesday, sky cover and rain chances will increase, with thunderstorms possible by later Wednesday night. A wetter and more unsettled pattern looks likely during the Thursday-Saturday time frame, with seasonable conditions thereafter.

MARINE. We will be discontinuing the Small Craft Advisory in effect for Hawk Channel and the Straits of Florida from Ocean Reef to Craig Key, as well as the extreme southeastern Gulf of Mexico beyond five fathoms. However, small craft should exercise caution in all Florida Keys coastal waters as northeast to east winds are expected to remain sustained between 15 and 20 knots for the next few days.

AVIATION. VFR conditions will prevail at EYW and MTH island terminals through 18z Tuesday afternoon. Near-nil rain and thunder chances are expected, with FEW to SCT coverage based between 025 and 030. Northeast to east winds will be sustained at 10 to 12 knots, with frequent gusts near 20 knots.

CLIMATE. In 1944, a Hurricane moved north off of Cuba, passing over the Dry Tortugas where the minimum pressure was 28.02" and Tropical Storm force winds were reported for 72 hours, with winds exceeding 120 mph for two hours. In Key West, the minimum pressure was 29.14" with a peak wind of 56 mph. In 1841, a Hurricane passed just west of Key West on the 18th-19th grounding many ships, especially at Mango Key 9 mi east of Key West.

PRELIMINARY POINT TEMPS/POPS. Key West 77 84 77 85 / 10 - 20 30 Marathon 77 86 77 87 / - - 20 30

KEY WATCHES/WARNINGS/ADVISORIES. FL . None. GM . Small Craft Advisory in effect for GMZ042-GMZ052-GMZ072- GMZ033-GMZ034 will be discontinued shortly.

Public/Marine/Fire . Kasper Aviation/Nowcasts . BT Data Acquisition . MRR

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KYWF1 - 8724580 - Key West, FL 15 mi57 min E 9.9G16 85°F 84°F1015.1 hPa
SANF1 - Sand Key, FL 20 mi45 min E 19G21 81°F 1015.1 hPa69°F
SMKF1 - Sombrero Key, FL 23 mi45 min E 16G19 1014 hPa
42095 25 mi75 min 85°F4 ft
VCAF1 - 8723970 - Vaca Key, FL 25 mi57 min ENE 13G15 81°F 85°F1015.2 hPa
LONF1 - Long Key, FL 41 mi55 min 14G18 81°F 1014.7 hPa68°F
JKYF1 - Johnson Key, FL 48 mi105 min 84°F
LRKF1 - Little Rabbit Key, FL 48 mi165 min 85°F
MUKF1 - Murray Key, FL 49 mi165 min 83°F
PKYF1 - Peterson Key, FL 49 mi165 min 85°F

Wind History for Key West, FL
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Key West Naval Air Station, FL9 mi52 minE 1610.00 miOvercast87°F70°F57%1014.7 hPa
Key West International Airport, FL12 mi52 minE 15 G 2010.00 miPartly Cloudy83°F70°F65%1015 hPa

Link to 5 minute data for KNQX

Wind History from NQX (wind in knots)
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Last 24hr--N7----N4----N6N7--N6NE5--NE12NE10--E11--------E15E12E16
1 day agoN6NW60NW4W300W3NW5N4N5N50NW5E30NE3NE5NE7NE7--------
2 days agoN5NE6NE4NE5NE7NE3NE4E3E7E8SE6SE3E6S5S400NW4S9S9SW6SW9SW7N4

Tide / Current Tables for Key Lois, southeast end, Florida
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Key Lois
Click for Map
Mon -- 01:55 AM EDT     0.42 feet Low Tide
Mon -- 05:35 AM EDT     Moonset
Mon -- 07:25 AM EDT     Sunrise
Mon -- 08:11 AM EDT     2.20 feet High Tide
Mon -- 02:24 PM EDT     0.44 feet Low Tide
Mon -- 06:08 PM EDT     Moonrise
Mon -- 06:56 PM EDT     Sunset
Mon -- 08:24 PM EDT     2.10 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Tide / Current Tables for Key West, Florida Current
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Key West
Click for Map
Mon -- 12:36 AM EDT     -1.85 knots Max Ebb
Mon -- 04:04 AM EDT     0.00 knots Slack
Mon -- 05:36 AM EDT     Moonset
Mon -- 07:03 AM EDT     1.27 knots Max Flood
Mon -- 07:26 AM EDT     Sunrise
Mon -- 09:30 AM EDT     -0.00 knots Slack
Mon -- 12:58 PM EDT     -1.97 knots Max Ebb
Mon -- 04:33 PM EDT     0.00 knots Slack
Mon -- 06:09 PM EDT     Moonrise
Mon -- 06:57 PM EDT     Sunset
Mon -- 07:21 PM EDT     1.14 knots Max Flood
Mon -- 09:41 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Weather Map
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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