Thursday, July29, 2021
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Marine Weather and Tides
Duck 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 6:53AMSunset 8:14PM Thursday July 29, 2021 5:31 PM EDT (21:31 UTC) Moonrise 11:09PMMoonset 11:01AM Illumination 70% Phase: Waning Gibbous; Moon at 20 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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GMZ043 Expires:202107300230;;659870 Fzus52 Kkey 292030 Cwfkey Coastal Waters Forecast For The Florida Keys National Weather Service Key West Fl 430 Pm Edt Thu Jul 29 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. Gmz042>044-300230- 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- 430 Pm Edt Thu Jul 29 2021
Tonight..East to southeast winds near 5 knots, increasing to 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth, becoming smooth to a light chop. Isolated showers and Thunderstorms.
Friday..Southeast winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms.
Friday night..East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. NEarshore waters smooth to a light chop. Isolated showers and Thunderstorms.
Saturday and Saturday night..East to southeast winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Isolated showers and Thunderstorms.
Sunday..Southeast winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Isolated showers and Thunderstorms.
Sunday night..Southeast winds near 10 knots, increasing to 10 to 15 knots. Seas building to around 2 feet. NEarshore waters a light chop, becoming a light to moderate chop. Scattered showers and isolated Thunderstorms.
Monday and Monday night..Southeast to south winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Scattered showers and isolated Thunderstorms.
Tuesday..Southeast to south winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms.
Tuesday night..East to southeast winds increasing to near 10 knots. Seas 1 to 2 feet. NEarshore waters becoming a light chop. Isolated showers and Thunderstorms.


7 Day Forecast for Marine Location Near Duck Key, FL
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location: 24.79, -80.88     debug


Area Discussion for - Key West, FL
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FXUS62 KKEY 291906 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 306 PM EDT Thu Jul 29 2021

DISCUSSION. Despite the 12z sounding at KEY sampling anomalously dry air at around 950 mb, a cloud line was able to fire again earlier this afternoon, as cloud streamers were apparently agitated by an outflow boundary that pushed northward from convection over the Straits of Florida. KBYX radar trends have been downward over the past hour or so, and as the atmosphere continues to be worked over, expect this convection to be essentially gone in the next couple of hours.

The ridge axis that has straddled the island chain over the past day or so is slowly progressing northward. This is supported by recent observations in the Bayside and Gulfside waters now showing an east to southeast wind direction. This should allow a pocket of relatively drier air in the vicinity of the Bahamas to push toward the island chain this evening and overnight. With only gentle steering flow, only a slight chance of rain and thunder is expected tonight, with a slight uptick in rain chances for tomorrow as yet another cloud line may fire.

All numerical modeling guidance shows a much more formidable pocket of dry air is progged to move into the area for Friday through at least Saturday night as the ridge results in large- scale general subsidence. Thereafter, an upper-level trough is expected to approach the Florida Peninsula late in the weekend and into early next week, which should disrupt some of the large-scale ridging. However, with the low-level convergence associated with the trough expected to remain well to our north and soundings indicative of no major moisture anomalies, will edge PoPs to near- normal levels (around 30%) for now for Monday through mid- week.

MARINE. There are no watches, warnings, or advisories in effect for the Florida Keys coastal waters. From synopsis, a ridge axis in the vicinity of the Bayside and Gulfside waters will slide northward tonight before settling over south- central Florida tomorrow through the end of the weak. This will result generally gentle east to southeast breezes. Rain and thunder chances will remain near- to or slightly below normal through much of the weekend, with perhaps a slight uptick in rain chances for Sunday night into at least the early part of next week.

AVIATION. VFR conditions will prevail at both the EYW and MTH terminals through 18z/30th. Cloud line development north of EYW has resulted in an inclusion of VCSH for the terminal through 20z. Otherwise, winds will remain light out of the east to southeast with brief bouts of variability.

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

Public/Marine/Fire . BT Aviation/Nowcasts . Williams Data Acquisition . DR

Visit us on the web at weather.gov/key

Follow us on Facebook and Twitter at: www.facebook.com/nwskeywest www.twitter.com/nwskeywest


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LONF1 - Long Key, FL 4 mi31 min Calm G 2.9 1015.6 hPa
PKYF1 - Peterson Key, FL 11 mi91 min 92°F
VCAF1 - 8723970 - Vaca Key, FL 13 mi43 min NNW 2.9 G 4.1 88°F 91°F1016.2 hPa
LRKF1 - Little Rabbit Key, FL 14 mi151 min 92°F
SMKF1 - Sombrero Key, FL 17 mi31 min ENE 2.9 G 5.1 1015 hPa
JKYF1 - Johnson Key, FL 18 mi91 min 93°F
BOBF1 - Bob Allen, FL 19 mi91 min 92°F
WRBF1 - Whipray Basin, FL 21 mi91 min SE 2.9 92°F
MUKF1 - Murray Key, FL 22 mi91 min 92°F
BKYF1 23 mi91 min 92°F
GBTF1 - Garfield Bight, FL 26 mi91 min 94°F
TBYF1 27 mi91 min 92°F
BNKF1 - Butternut Key, FL 28 mi91 min 93°F
LMDF1 - Little Madeira, FL 30 mi91 min 93°F
WWEF1 31 mi151 min 88°F
TRRF1 - Taylor River, FL 32 mi91 min 92°F
LRIF1 34 mi91 min 90°F
DKKF1 - Duck Key, FL 34 mi151 min 91°F
TCVF1 - Trout Cove, FL 35 mi91 min 92°F
JBYF1 35 mi91 min 90°F
BWSF1 - Blackwater Sound, FL 36 mi151 min 91°F
CWAF1 36 mi151 min 91°F
LBSF1 - Little Blackwater, FL 38 mi151 min 91°F
LSNF1 - Long Sound, FL 38 mi91 min 91°F
NRRF1 38 mi91 min 87°F
MNBF1 39 mi91 min 93°F
THRF1 39 mi151 min 92°F
HCEF1 - Highway Creek, FL 40 mi91 min 96°F
SREF1 41 mi91 min 89°F
GBIF1 - Gunboat Island, FL 41 mi91 min 88°F
TPEF1 - Tarpon Bay East, FL 43 mi91 min 87°F
MDKF1 43 mi91 min 91°F
CANF1 - Cane Patch, FL 44 mi91 min 86°F
HREF1 45 mi91 min 87°F
BDVF1 - Broad River, FL 48 mi91 min 86°F

Wind History for Vaca Key, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
The Florida Keys - Marathon International Airport, FL10 mi38 minVar 310.00 miMostly Cloudy87°F75°F67%1015.8 hPa

Link to 5 minute data for KMTH

Wind History from MTH (wind in knots)
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Last 24hrN5N4CalmNE3E3NE8NE3CalmN4CalmSE4SE4SE4SE43SE5SE5SE5SE55SE5Calm43
1 day agoS4S4SW4S3SE3SE4S4S3S5S4S3CalmCalmCalmCalmSE3454SE5S4CalmN3Calm
2 days agoS54S4SE4S5S54SW6SW5SW3SW3CalmCalmS3S34W73S433S4S5S5

Tide / Current Tables for Long Key Channel (West), Florida
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Long Key Channel (West)
Click for Map
Thu -- 01:38 AM EDT     0.06 feet Low Tide
Thu -- 06:50 AM EDT     Sunrise
Thu -- 08:19 AM EDT     1.05 feet High Tide
Thu -- 12:01 PM EDT     Moonset
Thu -- 01:50 PM EDT     0.22 feet Low Tide
Thu -- 08:09 PM EDT     Sunset
Thu -- 08:23 PM EDT     1.07 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.10.10.20.40.60.81110.90.70.40.30.20.30.50.60.811.110.90.7

Tide / Current Tables for Long Key Viaduct, Florida Current
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Long Key Viaduct
Click for Map
Thu -- 01:00 AM EDT     0.81 knots Max Flood
Thu -- 04:16 AM EDT     -0.00 knots Slack
Thu -- 06:50 AM EDT     Sunrise
Thu -- 07:37 AM EDT     -1.12 knots Max Ebb
Thu -- 10:59 AM EDT     0.00 knots Slack
Thu -- 12:01 PM EDT     Moonset
Thu -- 01:24 PM EDT     0.74 knots Max Flood
Thu -- 04:43 PM EDT     -0.00 knots Slack
Thu -- 08:01 PM EDT     -1.00 knots Max Ebb
Thu -- 08:09 PM EDT     Sunset
Thu -- 11:21 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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0.70.80.70.50.1-0.3-0.8-1.1-1.1-0.9-0.500.50.70.70.50.3-0.1-0.6-0.9-1-0.9-0.6-0.2

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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