Saturday, November18, 2017 L-36.com


Marine Weather and Tides
Key West, FL

Version 3.4
What's New / NOTES
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.
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.

Sunrise 6:44AMSunset 5:40PM Saturday November 18, 2017 5:23 AM EST (10:23 UTC) Moonrise 6:46AMMoonset 6:09PM Illumination 0% Phase: New Moon; Moon at 29 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 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- 427 Am Est Sat Nov 18 2017
Today..Northeast to east winds near 15 knots, decreasing to near 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet. NEarshore waters a moderate chop, becoming a light chop.
Tonight..Northeast to east winds 5 to 10 knots, becoming north. Seas around 1 foot. NEarshore waters smooth to a light chop.
Sunday..Northwest winds near 10 knots. Seas around 1 foot. NEarshore waters a light chop.
Sunday night..Northwest winds near 10 knots, becoming north and increasing to near 15 knots. Seas around 1 foot, building to 1 to 2 feet. NEarshore waters a light chop, becoming a moderate chop. Isolated showers.
Monday..Northeast winds near 20 knots. Seas 2 to 3 feet. NEarshore waters rough. Isolated showers.
Monday night..Northeast to east winds near 20 knots. Seas 2 to 4 feet. NEarshore waters rough. Scattered showers.
Tuesday..East winds near 15 knots, becoming east to southeast and decreasing to near 10 knots. Seas 1 to 3 feet, subsiding to 1 to 2 feet. NEarshore waters a moderate chop, becoming a light chop. Isolated showers.
Tuesday night..East winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Isolated showers.
Wednesday..East winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Scattered showers.
Wednesday night..Southeast winds 10 to 15 knots. Seas 1 to 3 feet. NEarshore waters a light to moderate chop. Scattered 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 180950
afdkey
area forecast discussion
national weather service key west fl
450 am est Sat nov 18 2017

Discussion
The mean layer ridge persists over central mexico, meanwhile the
latest short wave trough complex is pushing southeast across cuba.

As such, heights are rising at all levels across florida based on
last evening's RAOB analyses. The surface high is near the
carolina coastlines, maintaining moderate northeast to east
breezes across the coastal waters of the florida keys.

Temperatures are in the lower 70s with dewpoints in the lower 60s
(dps several degrees lower than expected). Skies are mostly clear
and the kbyx radar is sans echoes.

Forecast
The surface high will slide east into the western north atlantic
today, dragging the ridge axis on its western flank southward down
the florida peninsula. This axis will be across the keys tonight,
resulting in clear skies and light air, an ideal setup for
radiational cooling. Dewpoints should range from 63 to 68
degrees, which the falling temperatures will target. On Sunday, a
vigorous cold front over the gulf of mexico will quickly lose its
gusto as it works southeast towards the keys. This front will
stall across the keys Sunday night as the high developing in the
southeastern united states bridges the boundary. The 1000-925mb
thickness estimates indicate a short window of cold air advection
is possible late Sunday night early Monday morning. A breezy and
cloudy day is expected Monday, with 30 percent rain chances and
highs struggling through the upper 70s. The low level gradient
will relax sharply on Tuesday and Tuesday night as the next round
of height-carving, pacific short waves dig into the gulf of
mexico. Guidance continues to suggest an atmosphere which is
conducive for the development of a non-tropical low pressure
system over the gulf of mexico Tuesday through Wednesday night.

Thus, we advertise increased rain chances Wednesday through
Friday, followed by what is likely our next cold front, Friday
night or Saturday, next weekend.

Marine
Small craft should exercise caution until winds decrease and seas
subside across the straits of florida. From synopsis, an area of
high pressure currently near the carolina coastline will push east
into the western north atlantic today, then drag a ridge axis
southward down the florida peninsula tonight. Winds will continue
to collapse today, and light breezes are expected tonight. A
vigorous cold front will rapidly weaken across the gulf of mexico
on Sunday, then stall near the florida keys Sunday night. High
pressure will strengthen and broaden over the southeastern united
states Monday and Monday night. Fresh northeast to east breezes
will spread across the keys Monday morning. Winds may be a little
higher or lower than forecast, depending on the exact positioning
of the stalled front. A non tropical low pressure system may
develop over the gulf of mexico Tuesday through Wednesday night.

Aviation
Vfr conditions are expected at the keyw and kmth terminals today.

Northeast to east winds at 8 to 12 knots will become northeast
and decrease after sunset to around 5 knots or less.

Climate
In 1941, the daily record rainfall of 2.03 inches recorded at key
west.

Key watches warnings advisories
Fl... None.

Gm... None.

Public marine fire... Clr
aviation nowcasts... .Rizzo
data collection... ... Rizzo
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
SANF1 - Sand Key, FL 15 mi34 min 74°F 1014.9 hPa (-1.3)62°F
PLSF1 - Pulaski Shoal Light, FL 35 mi84 min E 15 G 16 75°F 1014.4 hPa (-1.9)

Wind History for Key West, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Key West Naval Air Station, FL23 mi31 minENE 710.00 miFair71°F66°F84%1014.3 hPa

Wind History from EYW (wind in knots)
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Last 24hrN9N11N10
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1 day agoN7N9N9N11
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2 days agoN9N9NE7NE11
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Tide / Current Tables for Sand Key Lighthouse, Sand Key Channel, Florida
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Sand Key Lighthouse
Click for Map
Sat -- 02:41 AM EST     0.02 feet Low Tide
Sat -- 06:42 AM EST     New Moon
Sat -- 06:44 AM EST     Moonrise
Sat -- 06:45 AM EST     Sunrise
Sat -- 09:12 AM EST     1.46 feet High Tide
Sat -- 02:19 PM EST     0.60 feet Low Tide
Sat -- 05:39 PM EST     Sunset
Sat -- 06:08 PM EST     Moonset
Sat -- 08:28 PM EST     2.00 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.30.100.20.50.81.11.41.51.41.210.70.60.60.91.21.51.8221.81.5

Tide / Current Tables for Boca Grande Channel, Florida Current
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Boca Grande Channel
Click for Map
Sat -- 12:24 AM EST     -1.52 knots Max Ebb
Sat -- 03:24 AM EST     0.00 knots Slack
Sat -- 06:22 AM EST     1.40 knots Max Flood
Sat -- 06:42 AM EST     New Moon
Sat -- 06:45 AM EST     Moonrise
Sat -- 06:46 AM EST     Sunrise
Sat -- 10:00 AM EST     -0.00 knots Slack
Sat -- 01:01 PM EST     -1.28 knots Max Ebb
Sat -- 03:52 PM EST     0.00 knots Slack
Sat -- 05:40 PM EST     Sunset
Sat -- 06:09 PM EST     Moonset
Sat -- 06:18 PM EST     0.99 knots Max Flood
Sat -- 09:31 PM EST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.5-1.5-1.1-0.30.51.11.41.41.10.70-0.7-1.1-1.3-1.1-0.60.10.710.90.70.3-0.3-0.9

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 (5,6,7,8)
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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.