Saturday, July4, 2020
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Marine Weather and Tides
Stock Island, FL

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:42AMSunset 8:21PM Saturday July 4, 2020 10:43 PM EDT (02:43 UTC) Moonrise 7:10PMMoonset 5:02AM Illumination 100% Phase: Full Moon; Moon at 14 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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GMZ044 Expires:202007050830;;332810 Fzus52 Kkey 050232 Cwfkey Coastal Waters Forecast For The Florida Keys National Weather Service Key West Fl 1032 Pm Edt Sat Jul 4 2020 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>044-050830- 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- 1032 Pm Edt Sat Jul 4 2020
Overnight..Southwest winds 5 to 10 knots, decreasing to near 5 knots. Seas 1 foot or less. NEarshore waters smooth to a light chop. Isolated showers and Thunderstorms.
Sunday..Southwest winds 5 to 10 knots. Seas 1 foot or less. NEarshore waters smooth to a light chop. Scattered showers and Thunderstorms.
Sunday night..Southwest winds near 5 knots, becoming southeast to south. Seas 1 foot or less. NEarshore waters smooth. Isolated showers and Thunderstorms.
Monday..East to southeast winds near 5 knots. Seas 1 foot or less. NEarshore waters smooth. Isolated showers and Thunderstorms.
Monday night..Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. NEarshore waters smooth to a light chop. Isolated showers and Thunderstorms.
Tuesday..East winds 5 to 10 knots. Seas 1 to 2 feet. NEarshore waters smooth to a light chop. Isolated showers and Thunderstorms.
Tuesday night..East winds 5 to 10 knots. Seas 1 to 2 feet. NEarshore waters smooth to a light chop. Scattered showers and Thunderstorms.
Wednesday through Thursday..East winds 5 to 10 knots. Seas 1 to 2 feet. NEarshore waters smooth to a light chop. Isolated showers and Thunderstorms.
Thursday night..Southeast winds near 5 knots. Seas around 1 foot. NEarshore waters smooth. Isolated showers and Thunderstorms.


7 Day Forecast for Marine Location Near Stock Island, FL
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location: 24.57, -81.75     debug


Area Discussion for - Key West, FL
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FXUS62 KKEY 041922 AFDKEY

Area Forecast Discussion National Weather Service Key West FL 322 PM EDT Sat Jul 4 2020

DISCUSSION. Only minor fluctuations in day-to-day weather are expected through the week ahead, with rain chances dancing within 10 percent of July climatology. No high-impact weather is expected.

A period of slightly above normal rain chances is underway and will continue until Sunday morning. The air mass has moistened considerably over the last 2 days. An east-west surface ridge axis has sunk south to near the north coast of Cuba, placing the Keys under weak southwesterly flow. An upper-tropospheric trough is seen in water vapor imagery spinning over the southeast Gulf, bringing an increase in upper level winds across the Keys until Sunday morning. Quite a few alto-cumulus clouds are seen upstream in visible satellite imagery to the north of far western Cuba, indicating elevated moisture and instability. So after a fairly settled early evening over the Keys, showers and thunderstorms should increase and blossom late this evening and overnight, peaking in coverage around sunrise Sunday.

After Sunday morning, the surface ridge axis to our south will rebound back north, passing across the Keys on Sunday night and reaching Central Florida late Monday. During the time that the ridge axis passes directly overhead, a brief period of weak subsidence and drier Precipitable Water will come with a corresponding drop in rain chances to near 20 percent.

Once the ridge axis reaches Central Florida, gentle low-level easterly flow will set up and persist for most of the week. The air mass will be plenty moist, with Precipitable Water values hovering around the 70th to 80th percentile throughout the week. However, a strong 500 mb ridge axis with heights in excess of 5910+ meters will slowly retrograde across the Keys during the week. When all the pluses and minuses are considered, there is no reason to stray from July climatology PoPs of 20-30 percent throughout the week.

A weakness in the subtropical ridge may develop around next Friday or Saturday over Florida or the eastern Gulf. This could bring a return back to weak southwesterly low-level flow. The weakness in the ridge may also lead to a minor uptick in convective coverage, but confidence is too low at this point to stray above 30 PoPs.

MARINE. A weak surface ridge axis near the north coast of Cuba will move back north across the Keys on Sunday night. The ridge will reach Central Florida late Monday and remain in place through Wednesday.

Close proximity of the ridge will allow mainly light and gentle breezes. While the ridge is to our south, southwesterly flow will prevail. Once the ridge moves to our north, then easterly flow will develop.

AVIATION. VFR conditions will prevail at the island terminals this afternoon and into the overnight. Showers and isolated thunderstorms have dissipated for now but there is still enough time in the day for additional showers and possible thunderstorms to develop within a cloud line. Otherwise light breezes continue, mainly from the southwest to west.

CLIMATE. As of July 3rd, the Key West International Airport had tied or broken the warm minimum temperature record for 12 consecutive days.

PRELIMINARY POINT TEMPS/POPS. Key West 83 91 83 92 / 30 30 10 20 Marathon 81 93 83 93 / 30 30 20 20

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

Public/Marine/Fire . Haner Aviation/Nowcasts . LIW 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
KYWF1 - 8724580 - Key West, FL 3 mi56 min WSW 2.9 G 4.1 87°F 91°F1014.8 hPa
SANF1 - Sand Key, FL 10 mi34 min WNW 1.9 G 4.1 85°F 1015.1 hPa73°F
42095 16 mi74 min 85°F 87°F1 ft
SMKF1 - Sombrero Key, FL 34 mi34 min S 2.9 G 5.1 86°F 1015.1 hPa74°F
VCAF1 - 8723970 - Vaca Key, FL 35 mi56 min WNW 4.1 G 5.1 86°F 92°F1014.7 hPa

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 International Airport, FL1 mi51 minW 310.00 miFair87°F73°F63%1014.5 hPa
Key West Naval Air Station, FL3 mi51 minSW 310.00 miPartly Cloudy89°F73°F59%1014.3 hPa

Link to 5 minute data for KEYW

Wind History from EYW (wind in knots)
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Last 24hrNW3E4E3S4S5S6SW6NW6CalmW5NW43NW4SW5SW8SW6SW6S6SW5SW6SW5W4W3W3
1 day agoSE5SE7SE5SE7S6SE5S5CalmCalmSW3SW4S44S5S6S6S7SW64SW74SW4CalmNW4
2 days agoE4E5E4SE7E3SE4SE5SE5SE7SE6SE6SE7SE5SE6SE9SE9SE6S5S4S5S3S3SE3E3

Tide / Current Tables for Cow Key Channel, Florida
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Key West, Florida Current
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Key West
Click for Map
Sat -- 01:36 AM EDT     -1.69 knots Max Ebb
Sat -- 05:05 AM EDT     0.00 knots Slack
Sat -- 06:01 AM EDT     Moonset
Sat -- 06:43 AM EDT     Sunrise
Sat -- 07:33 AM EDT     0.84 knots Max Flood
Sat -- 09:47 AM EDT     -0.00 knots Slack
Sat -- 01:27 PM EDT     -2.30 knots Max Ebb
Sat -- 05:11 PM EDT     0.00 knots Slack
Sat -- 08:09 PM EDT     Moonrise
Sat -- 08:20 PM EDT     Sunset
Sat -- 08:21 PM EDT     1.60 knots Max Flood
Sat -- 11:13 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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-1.2-1.6-1.7-1.4-0.8-0.10.50.80.80.5-0.2-1.1-1.9-2.3-2.2-1.9-1.1-0.20.71.31.61.510.2

Weather Map
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wmap_A
GEOS Local Image of Southeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Key West, FL (22,6,7,8)
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Ground Weather Radar Station Key West, FL
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weather_mapweather_map weather_map

Gulf Stream Current


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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerous of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.