Tuesday, July23, 2019 L-36.com


Marine Weather and Tides
Stock Island, FL

Version 3.4
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6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:50AMSunset 8:17PM Tuesday July 23, 2019 9:35 AM EDT (13:35 UTC) Moonrise 11:42PMMoonset 11:28AM Illumination 61% Phase: Waning Gibbous; Moon at 21 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:201907231430;;499175 Fzus52 Kkey 230825 Cwfkey Coastal Waters Forecast For The Florida Keys National Weather Service Key West Fl 425 Am Edt Tue Jul 23 2019 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>044-231430- 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- 425 Am Edt Tue Jul 23 2019
Today..Variable winds near 5 knots, becoming southwest to west 5 to 10 knots. Seas 1 foot or less. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms developing.
Tonight..South to southwest winds near 5 knots. Seas 1 foot or less. NEarshore waters smooth. Isolated showers and Thunderstorms.
Wednesday..Southwest winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms.
Wednesday night..South to southwest winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Isolated showers and Thunderstorms.
Thursday..South to southwest winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms.
Thursday night..Variable winds near 5 knots, becoming northeast to east 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms.
Friday and Friday night..East to southeast winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Isolated showers and Thunderstorms.
Saturday and Saturday night..East 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 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 231317
afdkey
area forecast discussion
national weather service key west fl
917 am edt Tue jul 23 2019

Discussion
Currently
Over the keys mostly sunny conditions prevail, and kbyx radar
finding no convective areas of note. Observations from island and
cman stations showing light winds mainly out of the south,
becoming calm at times. The key west morning sounding found some
fairly significant changes from yesterday morning. Precipitable
water values have dropped from two inches to around 1.75 inches,
much closer to normal for this time of year, if not a little
below. The boundary layer as a whole is a little drier and warmer
than yesterday, with MLCAPE values along the lines of one half of
what was found yesterday, and 0-3 km MLCAPE about one quarter of
yesterday's values.

Short term
The major forecast concern for the day is the development of a
cumulus line, especially over the lower keys. While the sounding
this morning was somewhat drier with anemic mlcape, there still is
sufficient available moisture for convection along strong
convergent boundaries. Since winds are light and variable, the
heating along the islands should present just such a boundary. The
key west waterspout index is right around 40%, which is double the
climatological average for this time of year. So while the
straits will likely experience a dearth of convection, there is a
fairly good likelihood of cloud line showers and storms beginning
late morning to early afternoon.

Marine
Light air, to a light south to southwest breeze, can be expected
over all florida keys coastal waters through this afternoon and
evening. Nearshore showers, with a possible thunderstorm or two,
can be expected to develop in cumulus cloud lines, which will
form parallel and nearby the islands. The chance of waterspouts
forming along these cloud lines is high, about double what is
expected for a typical july day. Development of any showers or
storms will most likely occur late this morning or afternoon.

Aviation
Vfr conditions will prevail through the early afternoon at both the
eyw and mth terminals. There is a good chance for island cloud line
development by early afternoon lasting through the early evening
hours; as a result, have included vcsh from 17z-00z at both
terminals. Depending on the evolution of this potential cloud line,
a tempo with specific location and timing impacts may later be
required. Winds will remain light and variable through this morning,
then veer to the wsw during the early afternoon.

Key watches warnings advisories
Fl... None.

Gm... None.

Public marine fire... Devanas
aviation nowcasts... .Bt
data collection... ... Chesser
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
KYWF1 - 8724580 - Key West, FL 3 mi54 min 89°F 90°F1016.2 hPa
SANF1 - Sand Key, FL 10 mi26 min S 4.1 G 6 85°F 1015.2 hPa77°F
SMKF1 - Sombrero Key, FL 34 mi26 min SSE 4.1 G 6 84°F 1016.5 hPa75°F
VCAF1 - 8723970 - Vaca Key, FL 35 mi48 min 85°F 88°F1016.1 hPa

Wind History for Key West, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Key West International Airport, FL1 mi43 minS 410.00 miA Few Clouds84°F75°F77%1016.2 hPa
Key West Naval Air Station, FL3 mi43 minVar 310.00 miA Few Clouds87°F75°F70%1016.1 hPa

Wind History from EYW (wind in knots)
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Last 24hrSE8SE7SE6SE5N12
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3SE4S5S5SW5S4SE3N6NE4E3CalmSW3CalmS3SW4CalmCalmS6S4
1 day agoSE12SE10SE12SE10SE9SE9SE11SE11SE13CalmE6E5E14E9NE4NE4E5SE7SE7SE6SE8SE9SE8SE10
2 days agoSE6SE8SE7SE9E8SE9SE6E6SE7E11SE6SE9E15
G19
NE6E13SE12SE15SE13SE6SE9SE7SE8SE6SE12

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
Tue -- 12:08 AM EDT     Moonrise
Tue -- 02:42 AM EDT     -0.00 knots Slack
Tue -- 06:11 AM EDT     -1.52 knots Max Ebb
Tue -- 06:51 AM EDT     Sunrise
Tue -- 10:08 AM EDT     0.00 knots Slack
Tue -- 12:18 PM EDT     0.65 knots Max Flood
Tue -- 12:28 PM EDT     Moonset
Tue -- 03:08 PM EDT     -0.00 knots Slack
Tue -- 06:36 PM EDT     -1.41 knots Max Ebb
Tue -- 08:15 PM EDT     Sunset
Tue -- 10:30 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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0.70.60.3-0.1-0.7-1.3-1.5-1.4-1.1-0.6-0.10.40.60.60.40.1-0.4-1-1.3-1.4-1.1-0.7-0.30.2

Weather Map and Satellite Images
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wmap_A
GOES 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 (9,2,3,4)
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Ground Weather Radar Station Key West, FL
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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.