Wednesday, April25, 2018 L-36.com


Marine Weather and Tides
Key West, FL

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:54AMSunset 7:55PM Wednesday April 25, 2018 4:21 AM EDT (08:21 UTC) Moonrise 3:00PMMoonset 3:12AM Illumination 75% Phase: Waxing Gibbous; Moon at 10 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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GMZ075 Straits Of Florida From Ocean Reef To Craig Key Out 20 Nm- Straits Of Florida From Craig Key To West End Of Seven Mile Bridge Out 20 Nm- Straits Of Florida From West End Of Seven Mile Bridge To South Of Halfmoon Shoal Out 20 Nm- Straits Of Florida From Halfmoon Shoal To 20 Nm West Of Dry Tortugas Out 20 Nm- Straits Of Florida From Ocean Reef To Craig Key 20 To 60 Nm Out- Straits Of Florida From Craig Key To West End Of Seven Mile Bridge 20 To 60 Nm Out- Straits Of Florida From West End Of Seven Mile Bridge To South Of Halfmoon Shoal 20 To 60 Nm Out- Straits Of Florida From Halfmoon Shoal To 20 Nm West Of Dry Tortugas 20 To 60 Nm Out- 1041 Pm Edt Tue Apr 24 2018
Overnight..Southwest to west winds near 10 knots, becoming northwest. Seas 1 to 2 feet. Scattered showers developing.
Wednesday..Northwest to north winds near 10 knots, becoming west to northwest 5 to 10 knots. Seas 1 to 2 feet. Scattered showers in the morning.
Wednesday night..North winds 5 to 10 knots. Seas 1 to 2 feet.
Thursday..Northeast to east winds 5 to 10 knots. Seas 1 to 2 feet.
Thursday night..Southeast winds near 5 knots. Seas 1 foot or less.
Friday..Southwest winds 5 to 10 knots. Seas around 1 foot. Scattered showers.
Friday night..Southwest winds 5 to 10 knots. Seas around 1 foot. Scattered showers.
Saturday..West winds 10 to 15 knots. Seas 1 to 2 feet. Scattered showers.
Saturday night..Northwest to north winds 10 to 15 knots. Seas 1 to 3 feet. Scattered showers.
Sunday..Northeast winds near 10 knots. Seas 1 to 3 feet. Isolated showers.
Sunday night..Northeast to east winds 10 to 15 knots. Seas 2 to 4 feet. Isolated showers.

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 250244
afdkey
area forecast discussion
national weather service key west fl
1044 pm edt Tue apr 24 2018

Discussion
Currently - a trough, related to a low lifting northeastward
through the atlantic states, is working its way eastward through
the florida keys. Winds across the area have shifted more west to
northwest, remaining light. Earlier shower and thunderstorm
activity associated with this trough have dissipated and no
convective activity is detected near or upstream of the florida
keys. Temperatures remain in the upper 70s to near 80 with dew
points holding in the lower 70s.

Short term update - the surface trough will work its way eastwards
through the keys overnight, clearing out east of the bahamas after
sunrise. Winds will shift further northwest and briefly lull in
the early overnight hours, then strengthen back closer to 10 knots
in the predawn hours. While there is currently no convection
near or upstream of the island chain, the presence of the trough
and known lingering boundaries justifies holding onto a low chance
pop through the remainder of the overnight period. There is
essentially no cold air advection in wake of the trough and
lows will be in the mid 70s. Drier air is on the way, however,
but dew point temperatures will only slowly fall overnight.

Marine
A weak surface trough moving eastwards through keys waters will
continue to turn winds more northwesterly. Winds are expected to
lull slightly in the early overnight hours, then strengthen again
in the predawn hours out of the northwest to north.

Aviation
Vfr conditions will prevail at the island terminals overnight.

With that said, there will be a chance for a round or two of
showers at the island terminals, producing short spells of subVFR
conditions. Surface winds will be light out of the west to
northwest, shifting northwest to north.

Key watches warnings advisories
Fl... None.

Gm... None.

Public marine fire... 11
aviation nowcasts... .11
data collection... ... Dr
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SANF1 - Sand Key, FL 15 mi31 min 77°F 1014.4 hPa (-0.8)71°F
KYWF1 - 8724580 - Key West, FL 17 mi51 min NNW 8.9 G 11
PLSF1 - Pulaski Shoal Light, FL 35 mi81 min NE 7 G 8 75°F 1014.7 hPa (-0.8)
42078 47 mi51 min 80°F1 ft

Wind History for Key West, FL
(wind in knots)    EDIT      (on/off)   Help
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G11
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Key West International Airport, FL20 mi28 minNNW 610.00 miMostly Cloudy77°F73°F88%1014.4 hPa
Key West Naval Air Station, FL23 mi28 minN 710.00 miPartly Cloudy76°F71°F85%1014 hPa

Wind History from EYW (wind in knots)
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Last 24hrS3S5SW4SW3SW4SW6SW5SW7SW7SW8W10SW9SW9SW11W7W7W10NW7NW8NW8NW7NW7NW4NW6
1 day agoSE9SE9SE9SE10SE11SE10SE10S11S10S9S10S8SW7SW5SW6S5S3SE4SE6SE5S4S3SW3S4
2 days agoE10E9E9E11E8E8E8SE11E12SE11SE12SE12SE12E12E11SE9E12E13E15E12SE13SE12SE12SE10

Tide / Current Tables for Sand Key Lighthouse, Sand Key Channel, Florida
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Sand Key Lighthouse
Click for Map
Wed -- 12:08 AM EDT     -0.08 feet Low Tide
Wed -- 04:10 AM EDT     Moonset
Wed -- 06:57 AM EDT     Sunrise
Wed -- 06:59 AM EDT     1.14 feet High Tide
Wed -- 12:17 PM EDT     0.25 feet Low Tide
Wed -- 03:59 PM EDT     Moonrise
Wed -- 06:48 PM EDT     1.38 feet High Tide
Wed -- 07:54 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.1-00.20.40.70.91.11.11.10.90.60.40.30.30.50.711.21.31.41.310.70.3

Tide / Current Tables for Boca Grande Channel, Florida Current
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Boca Grande Channel
Click for Map
Wed -- 01:14 AM EDT     0.00 knots Slack
Wed -- 04:11 AM EDT     Moonset
Wed -- 04:40 AM EDT     1.07 knots Max Flood
Wed -- 06:57 AM EDT     Sunrise
Wed -- 07:43 AM EDT     -0.00 knots Slack
Wed -- 10:55 AM EDT     -1.27 knots Max Ebb
Wed -- 01:44 PM EDT     0.00 knots Slack
Wed -- 04:00 PM EDT     Moonrise
Wed -- 05:05 PM EDT     1.04 knots Max Flood
Wed -- 07:55 PM EDT     Sunset
Wed -- 08:00 PM EDT     -0.00 knots Slack
Wed -- 11:18 PM EDT     -1.40 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.8-0.20.50.911.10.90.4-0.2-0.7-1.1-1.3-1.1-0.50.20.70.9110.60-0.6-1.1-1.4

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.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
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.