Monday, August19, 2019 L-36.com


Marine Weather and Tides
Key West, FL

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
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 7:02AMSunset 7:59PM Monday August 19, 2019 11:20 PM EDT (03:20 UTC) Moonrise 9:44PMMoonset 9:25AM Illumination 80% Phase: Waning Gibbous; Moon at 19 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:201908200830;;494748 Fzus52 Kkey 200224 Cwfkey Coastal Waters Forecast For The Florida Keys National Weather Service Key West Fl 1024 Pm Edt Mon Aug 19 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>044-200830- 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- 1024 Pm Edt Mon Aug 19 2019
Overnight..East to southeast winds near 15 knots. Seas 2 to 3 feet. NEarshore waters a moderate chop. Numerous showers and scattered Thunderstorms.
Tuesday..East to southeast winds near 15 knots, decreasing to 10 to 15 knots. Seas 2 to 3 feet, subsiding to 1 to 3 feet. NEarshore waters a moderate chop, becoming a light to moderate chop. Numerous showers and scattered Thunderstorms.
Tuesday night..East to southeast winds 10 to 15 knots. Seas 1 to 3 feet. NEarshore waters a light to moderate chop. Scattered showers and isolated Thunderstorms.
Wednesday and Wednesday night..East winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Scattered showers and Thunderstorms.
Thursday..Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet. NEarshore waters smooth to a light chop. Scattered showers and Thunderstorms.
Thursday 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.
Friday..East winds 5 to 10 knots. Seas 1 to 2 feet. NEarshore waters smooth to a light chop. Scattered showers and Thunderstorms.
Friday night..Southeast winds near 10 knots. Seas around 2 feet. NEarshore waters a light chop. Scattered showers and Thunderstorms.
Saturday..Southeast to south winds 5 to 10 knots. Seas 1 to 2 feet. NEarshore waters smooth to a light chop. Scattered showers and Thunderstorms.
Saturday night..Southeast to south winds near 10 knots. Seas around 2 feet. NEarshore waters a light chop. Scattered showers and Thunderstorms.


7 Day Forecast for Marine Location Near Key West, FL
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location: 24.55, -82.13     debug


Area Discussion for - Key West, FL
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Fxus62 kkey 200226
afdkey
area forecast discussion
national weather service key west fl
1026 pm edt Mon aug 19 2019

Discussion
A large mid to upper-level anticyclone is centered over texas,
giving way to a narrow weakness in the upper-levels over southern
florida and the yucatan channel. The low-level subtropical ridge
stretches west across florida into the gulf of mexico. Local
surface observations combined with the 850 mb vorticity analysis
from cimss place a sfc to low-level trough nearly across the
florida keys. The axis stretches southwest from near nassau to
havana. Late this afternoon and early this evening, convection
flourished along this axis. Since then, overall coverage has
waned, likely due to the decreasing kinematics along the axis. The
00z kkey RAOB sampled ~1.7" of pw (just below the 50th
percentile), a marked increase over the past 24 hours, yet still
not that soupy. We call for 60% rain chances overnight, which is
higher than the blended guidance. The convergence along the back-
side of the axis should press west across the island chain by
daybreak. The forecast is on track, and aside from removing
exercise caution in the straits, no changes are needed or planned.

Marine
A trough over the florida keys slowly will slide west
tonight and Tuesday. High pressure will stretch west across the
florida peninsula Tuesday night through Friday night, sagging
south towards the keys this weekend. Breezes will begin to
diminish Tuesday night and Wednesday, and gentle breezes are
expected Wednesday night through Saturday.

Aviation
Vfr conditions will prevail at the island terminals for much of the
overnight period as all recent nearby activity has transitioned
northwest and westward into our gulf waters. More activity situated
well upstream of the keys may move into the the vicinity
of the terminals vicinity late in the overnight. Surface winds
will be light out of the east.

Preliminary point temps pops
Key west 92 79 89 80 50 60 60 50
marathon 93 80 93 81 50 60 60 50

Key watches warnings advisories
Fl... None.

Gm... None.

Public marine fire... Clr
aviation nowcasts... .11
data collection... ... Dr
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
42095 13 mi51 min 87°F3 ft
SANF1 - Sand Key, FL 15 mi31 min E 16 G 19 84°F 1015.8 hPa78°F
KYWF1 - 8724580 - Key West, FL 17 mi57 min 84°F 91°F1017.2 hPa
PLSF1 - Pulaski Shoal Light, FL 35 mi36 min ESE 13 G 14 86°F 1017.3 hPa (+1.4)
GKYF1 40 mi81 min 87°F

Wind History for Key West, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Key West International Airport, FL20 mi88 minE 1110.00 miFair85°F75°F75%1016.6 hPa
Key West Naval Air Station, FL23 mi88 minE 1210.00 miMostly Cloudy85°F75°F75%1016.3 hPa

Link to 5 minute data for KEYW

Wind History from EYW (wind in knots)
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Last 24hrE7E7E8E6E6E7E8NE7NE6E9E14
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2 days agoNE6N4NE4E3E3S6S5S9S8S11SW10S10S10S8S5SE7SE8SE8SE8E7E6E5E10E8

Tide / Current Tables for Sand Key Lighthouse, Sand Key Channel, Florida (2)
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Sand Key Lighthouse
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Mon -- 05:45 AM EDT     0.37 feet Low Tide
Mon -- 07:03 AM EDT     Sunrise
Mon -- 10:23 AM EDT     Moonset
Mon -- 11:49 AM EDT     1.68 feet High Tide
Mon -- 06:19 PM EDT     0.30 feet Low Tide
Mon -- 07:58 PM EDT     Sunset
Mon -- 10:42 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.51.41.20.90.60.40.40.50.81.11.41.61.71.61.310.70.40.30.30.50.81.11.4

Tide / Current Tables for Boca Grande Channel, Florida Current
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Boca Grande Channel
Click for Map
Mon -- 12:46 AM EDT     -0.00 knots Slack
Mon -- 03:56 AM EDT     -1.16 knots Max Ebb
Mon -- 07:02 AM EDT     0.00 knots Slack
Mon -- 07:04 AM EDT     Sunrise
Mon -- 09:36 AM EDT     1.16 knots Max Flood
Mon -- 10:24 AM EDT     Moonset
Mon -- 12:56 PM EDT     -0.00 knots Slack
Mon -- 04:13 PM EDT     -1.18 knots Max Ebb
Mon -- 07:25 PM EDT     0.00 knots Slack
Mon -- 07:59 PM EDT     Sunset
Mon -- 09:57 PM EDT     1.11 knots Max Flood
Mon -- 10:43 PM EDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.4-0.1-0.6-1-1.2-1-0.6-00.61.11.10.90.4-0-0.5-1-1.2-1.1-0.8-0.30.40.91.10.9

Weather Map and Satellite Images
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wmap_A
GOES Local Image of    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 (23,6,7,8)
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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.