Tuesday, May23, 2017 L-36.com


Marine Weather and Tides
Duck Key, FL

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:38AMSunset 8:09PM Tuesday May 23, 2017 4:56 AM EDT (08:56 UTC) Moonrise 3:57AMMoonset 4:53PM Illumination 6% Phase: Waning Crescent; Moon at 27 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 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- 423 Am Edt Tue May 23 2017
Today..Southeast winds near 15 knots...becoming south and decreasing to 10 to 15 knots. Seas 1 to 3 feet. NEarshore waters a light to moderate chop. Isolated showers.
Tonight..Southeast to south winds near 10 knots...increasing to near 15 knots late. Seas 1 to 2 feet. NEarshore waters a light to moderate chop. Isolated showers.
Wednesday..South to southwest winds near 15 knots. Seas 2 to 3 feet. NEarshore waters a moderate chop. Scattered showers and isolated Thunderstorms.
Wednesday night..South to southwest winds near 15 knots...increasing to near 20 knots. Seas 2 to 3 feet...building to 3 to 5 feet. NEarshore waters a moderate chop...becoming rough. Scattered showers and Thunderstorms.
Thursday..Southwest winds near 20 knots...decreasing to 10 to 15 knots. Seas 3 to 5 feet...subsiding to 2 to 4 feet. NEarshore waters rough...becoming a light to moderate chop. Numerous showers and scattered Thunderstorms.
Thursday night..Winds becoming variable 5 to 10 knots. Seas subsiding to 1 to 2 feet. NEarshore waters becoming mostly smooth. Scattered showers and Thunderstorms.
Friday through Saturday..East to southeast winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth. Scattered showers and isolated Thunderstorms.
Saturday night..East to southeast winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Scattered showers and isolated 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 230800
afdkey
area forecast discussion
national weather service key west fl
400 am edt Tue may 23 2017

Discussion
Currently - a broad atlantic surface ridge extends across south
florida and the keys this morning, bringing mostly light to gentle
southeast breezes. A channel of stronger winds has set up across
a portion of the florida straits extending into our gulf waters
western waters where winds are breezier. The environment remains
stable with with no shower activity within the forecast area.

Conditions remain warm with temperatures near 80 and dew points in
the mid 70s.

Forecast - the ridge axis near the keys will settle southwards
nearer cuba today and tonight as a low pressure system moves into
the eastern united states. This is response to an amplified trough
aloft rotating east of the rockies. Winds will become more uniform
and light out of the southeast today into tonight. Rain chances
will remain slim due to the lack of forcing at any level. Expect
near to slightly above normal temperatures in partly cloudy to
mostly sunny skies.

The flow across the keys will begin trending upwards early
Wednesday the as the air mass rushes northwards around the ridge
and towards a deepening trough moving through the southeastern
united states and gulf of mexico. Confluent low level flow with
some support aloft in an increasingly unstable environment will
mean pops edging upwards to high chance and likely with increasing
chances for thunderstorms, some of which may be strong. Most
likely, the wettest periods will be Wednesday night and Thursday.

The deep layered low complex over the eastern united states will
continue to rapidly rotate eastwards and lift out by Friday. As a
result, expect weak low level ridging to return across the keys
and a rapidly collapsing wind field. Winds will quickly trend
downwards beginning late Thursday and pops will drop to a low
chance. Expect weak flow to gradually firm up out of the east to
southeast this weekend as ridging becomes more established across
the florida peninsula.

Marine
A ridge axis near south florida and the keys will shift southwards
near cuba today and tonight. Winds will generally be gentle out of
the southeast, with the momentary surge over portions of keys
waters this morning washing out early today. Winds will trend
upwards strongly beginning tonight as a strengthening trough moves
into the eastern united states and gulf of mexico. A mix of
cautions and advisories may be required for Wednesday through
Thursday time frame. Shower and thunderstorm activity will also be
on the increase, peaking late Wednesday and Thursday. A much
flatter pressure pattern will return across the keys late Thursday
and Friday as the trough lifts out and away of our area.

Aviation
Vfr and gentle southeast to south breezes will prevail at the eyw
and mth terminals through the forecast period.

Preliminary point temps/pops
Key west 87 80 87 80 / 10 20 30 50
marathon 89 80 89 81 / 10 20 30 50

Key watches/warnings/advisories
Fl... None.

Gm... None.

Public/marine/fire... 11
aviation/nowcasts... .Clr
visit us on the web at weather.Gov/key
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LONF1 - Long Key, FL 4 mi56 min S 12 G 15 80°F 83°F1014.3 hPa (-1.4)71°F
PKYF1 - Peterson Key, FL 11 mi56 min 83°F
VCAF1 - 8723970 - Vaca Key, FL 13 mi38 min SSE 5.1 G 9.9 79°F 85°F1013.6 hPa
LRKF1 - Little Rabbit Key, FL 14 mi116 min 82°F
JKYF1 - Johnson Key, FL 18 mi116 min 84°F
BOBF1 - Bob Allen, FL 19 mi56 min 82°F
WRBF1 - Whipray Basin, FL 21 mi116 min ESE 4.1 84°F
MUKF1 - Murray Key, FL 22 mi56 min 84°F
BKYF1 23 mi56 min 82°F
GBTF1 - Garfield Bight, FL 26 mi56 min 83°F
TBYF1 27 mi56 min 87°F
BNKF1 - Butternut Key, FL 28 mi56 min 84°F
LMDF1 - Little Madeira, FL 30 mi56 min 82°F
WWEF1 31 mi116 min 84°F
MLRF1 - Molasses Reef, FL 31 mi56 min S 8.9 G 9.9 79°F 81°F1014.9 hPa (-1.4)
TRRF1 - Taylor River, FL 32 mi56 min 85°F
DKKF1 - Duck Key, FL 34 mi116 min 83°F
LRIF1 34 mi56 min 85°F
TCVF1 - Trout Cove, FL 35 mi116 min 82°F
CWAF1 36 mi116 min 83°F
BWSF1 - Blackwater Sound, FL 36 mi116 min 83°F
LBSF1 - Little Blackwater, FL 38 mi116 min 83°F
NRRF1 38 mi56 min 85°F
LSNF1 - Long Sound, FL 38 mi56 min 83°F
HCEF1 - Highway Creek, FL 40 mi116 min 83°F
GBIF1 - Gunboat Island, FL 41 mi56 min 85°F
SREF1 41 mi56 min 84°F
TPEF1 - Tarpon Bay East, FL 43 mi116 min 84°F
CANF1 - Cane Patch, FL 44 mi116 min 82°F
HREF1 45 mi56 min 83°F
BDVF1 - Broad River, FL 48 mi56 min 84°F

Wind History for Vaca Key, FL
(wind in knots)    EDIT      (on/off)   Help
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Last
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E4
E4
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G8
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G11
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G12
E6
G12
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G12
SE7
G14
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E7
G11
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G8
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G14
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G17
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G12
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SE11
G17
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G12
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G14
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G12
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E6
G13
SE7
G12
SE4
G8
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G11
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G13
SE6
G13

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Marathon, Marathon Airport, FL10 mi63 minSSE 9 G 1510.00 miA Few Clouds81°F73°F77%1013.9 hPa

Wind History from MTH (wind in knots)
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Last 24hrE5E4E3E3SE5SE66SE8SE7SE6SE8
G14
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1 day agoE6SE7SE7SE7E6E8
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E6E8E5E7E7E6SE7
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2 days agoSE9
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G16

Tide / Current Tables for Conch Key, eastern end, Florida
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Conch Key
Click for Map
Tue -- 01:00 AM EDT     0.13 feet Low Tide
Tue -- 04:56 AM EDT     Moonrise
Tue -- 06:36 AM EDT     Sunrise
Tue -- 07:16 AM EDT     1.57 feet High Tide
Tue -- 02:02 PM EDT     -0.13 feet Low Tide
Tue -- 05:52 PM EDT     Moonset
Tue -- 08:04 PM EDT     Sunset
Tue -- 08:23 PM EDT     1.16 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.10.20.50.81.21.41.61.51.310.60.2-0-0.1-00.20.50.811.11.110.7

Tide / Current Tables for Long Key Viaduct, Florida Current
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Long Key Viaduct
Click for Map
Tue -- 01:54 AM EDT     -1.40 knots Max Ebb
Tue -- 04:56 AM EDT     Moonrise
Tue -- 05:03 AM EDT     0.00 knots Slack
Tue -- 06:36 AM EDT     Sunrise
Tue -- 07:33 AM EDT     1.01 knots Max Flood
Tue -- 10:33 AM EDT     -0.00 knots Slack
Tue -- 02:02 PM EDT     -1.69 knots Max Ebb
Tue -- 05:18 PM EDT     0.00 knots Slack
Tue -- 05:52 PM EDT     Moonset
Tue -- 08:04 PM EDT     Sunset
Tue -- 08:12 PM EDT     1.43 knots Max Flood
Tue -- 11:36 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.8-1.3-1.4-1.2-0.7-00.6110.80.3-0.3-1-1.5-1.7-1.5-1-0.30.61.21.41.310.4

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
east_satellite

GOES Local Image of Southeast    EDIT
Geos

Wind Forecast for Key West, FL (4,6,7,8)
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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 numerious 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.