Monday, November20, 2017 L-36.com


Marine Weather and Tides
Cudjoe Key, 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 6:46AMSunset 5:39PM Monday November 20, 2017 10:38 AM EST (15:38 UTC) Moonrise 8:26AMMoonset 7:33PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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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GMZ032 Bayside And Gulf Side From Craig Key To West End Of Seven Mile Bridge- Gulf Of Mexico From West End Of Seven Mile Bridge To Halfmoon Shoal Out To 5 Fathoms- 1019 Am Est Mon Nov 20 2017
.small craft advisory in effect...
This afternoon..Northeast to east winds 15 to 20 knots early, increasing to 20 knots and gusty. Seas building to 2 to 3 feet. NEarshore waters choppy early, becoming rough. Scattered showers.
Tonight..East winds 15 to 20 knots. Seas 1 to 3 feet. NEarshore waters choppy. Scattered showers.
Tuesday..East to southeast winds 10 to 15 knots, decreasing to 5 to 10 knots. Seas 1 to 2 feet, subsiding to 1 foot or less. NEarshore waters a light to moderate chop, becoming smooth to a light chop. Scattered showers.
Tuesday night and Wednesday..Variable winds near 5 knots. Seas less than 1 foot. NEarshore waters smooth. Isolated showers.
Wednesday night..Variable winds 5 to 10 knots. Seas 1 foot or less. NEarshore waters smooth to a light chop. Scattered showers.
Thursday..Southeast winds near 10 knots, becoming south to southwest and increasing to 10 to 15 knots. Seas around 1 foot, building to 1 to 2 feet. NEarshore waters a light chop, becoming a light to moderate chop. Numerous showers and isolated Thunderstorms.
Thursday night..Southwest winds near 15 knots. Seas 1 to 3 feet. NEarshore waters a moderate chop. Scattered showers and isolated Thunderstorms.
Friday..West winds near 15 knots. Seas 1 to 3 feet. NEarshore waters a moderate chop. Scattered showers.
Friday night..Northwest to north winds near 15 knots. Seas 2 to 3 feet. NEarshore waters a moderate chop. Isolated showers.

7 Day Forecast for Marine Location Near Cudjoe Key, FL
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location: 24.64, -81.48     debug


Area Discussion for - Key West, FL
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Fxus62 kkey 201022
afdkey
area forecast discussion
national weather service key west fl
522 am est Mon nov 20 2017

Discussion
High pressure centered over tennessee reaches well to the
southwest into the southern gulf of mexico. Along the southern
flank of the high, a cold front stretches from southern florida
to the bay of campeche. Just north of the boundary, northeast
winds are sustained near 20 knots, such as pulaski shoal. Along
the front several cloud layers are apparent on the nighttime
microphysics imagery courtesy of goes-16. Long duration loops of
radar and satellite indicate the cold front is slowing down,
signaling its imminent stall. Distance speed calculations from the
kbyx and kamx radar indicate the showers along the front are
moving southwest at 6 knots, whereas earlier they were moving
south.

Forecast
The front will stall along the florida keys today, resulting in a
mostly cloudy and breezy day, with temperatures in the upper 70s.

We indicate 30 percent rain chances which is above guidance, and
represents the current radar depictions from amx and byx,
especially given shower movement will be to the west-southwest,
right down the island chain. The front will transition tonight and
move northward as a developing warm front. At the same time, a
short wave trough currently near southwest texas, will set the
equatorward base of a long wave trough deep into the gulf of
mexico. Once the front is north of the keys, breezes will diminish
quickly and rain chances will decrease. By Wednesday night, a
short wave trough near the pacific northwest (soon to join the
upper air network) will energize the long wave trough in the gulf.

This is where confidence in the wind forecast decreases. A broad,
non-tropical surface low will develop in the gulf in response to
the fresh infusion of mid-upper level energy. However, there is
still considerable spread in the guidance concerning the exact
details. Thus, the current forecast represents a blend of the
available solutions, which may be no better than one single
solution. Strangely enough, there is increased confidence for
cooler, drier weather Saturday and Sunday.

Marine
A cold front just north of the florida keys will stall just south
of the island chain today, resulting in freshening northeast
breezes across all coastal waters. This cold front will begin to
move northward as a warm front tonight, allowing breezes to
quickly diminish on Tuesday. An area of low pressure will likely
develop over the gulf of mexico Tuesday night or Wednesday. This
system will slowly move northeast towards the florida peninsula
Wednesday night and Thursday, and move east of florida by Friday
night. The confidence in the exact details of the forecast remains
poor at this time. Where and when the low develops will have
drastic changes to the magnitude and direction of the winds.

Aviation
Vfr conditions will prevail through the afternoon at both the key
west and marathon terminals. However, there may be a prolonged
period of MVFR ceilings in the morning hours from 15z through 19z
as a weak and dissipating cold front stalls over the area.

Isolated showers are possible at either location, which could
result in brief MVFR conditions as they pass by. Surface winds
will be from the northeast to east and will gust to 15 knots.

Key watches warnings advisories
Fl... None.

Gm... Small craft advisory for gmz033-034.

Public marine fire... Clr
aviation nowcasts... .Devanas
data collection... ... Chesser
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
KYWF1 - 8724580 - Key West, FL 18 mi51 min NE 12 G 16 76°F 77°F1017.5 hPa
VCAF1 - 8723970 - Vaca Key, FL 20 mi51 min NE 13 G 16 73°F 76°F1017.3 hPa
SANF1 - Sand Key, FL 25 mi49 min 74°F 1018.3 hPa (+1.9)66°F
LRKF1 - Little Rabbit Key, FL 42 mi159 min 74°F
JKYF1 - Johnson Key, FL 42 mi159 min 74°F
PKYF1 - Peterson Key, FL 43 mi99 min 75°F
BKYF1 48 mi99 min 73°F
WRBF1 - Whipray Basin, FL 49 mi159 min NNW 12 74°F

Wind History for Key West, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Key West Naval Air Station, FL12 mi46 minENE 1110.00 miPartly Cloudy76°F71°F85%1017.6 hPa
Key West International Airport, FL16 mi46 minNE 1010.00 miMostly Cloudy75°F68°F79%1017.9 hPa
The Florida Keys - Marathon International Airport, FL24 mi46 minNE 1110.00 miFair76°F66°F72%1017.5 hPa

Wind History from NQX (wind in knots)
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Last 24hrNW5N5N5N7NW5NW4NW5NW6NW7NW7NW7N7N5N4CalmCalmCalmNE3E4NE7NE5NE11
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1 day agoNE11NE11NE9E7E8E7E5E5CalmNE4NE4NE3N4N4N4N3N4N5N4N3N5N5N8N4
2 days agoNE14NE13NE10
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NE10NE9NE11E8E10E12E13E10NE11NE10NE9NE11NE8NE8E7NE5NE5NE9NE11NE12

Tide / Current Tables for Gopher Key, Cudjoe Bay, Florida
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Gopher Key
Click for Map
Mon -- 04:55 AM EST     0.04 feet Low Tide
Mon -- 06:45 AM EST     Sunrise
Mon -- 08:26 AM EST     Moonrise
Mon -- 10:27 AM EST     1.32 feet High Tide
Mon -- 04:19 PM EST     0.50 feet Low Tide
Mon -- 05:37 PM EST     Sunset
Mon -- 07:33 PM EST     Moonset
Mon -- 09:41 PM EST     1.87 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.410.60.30.100.20.50.81.11.31.31.210.80.60.50.60.81.21.61.81.91.8

Tide / Current Tables for No Name Key (northeast of), Florida Current
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No Name Key (northeast of)
Click for Map
Mon -- 02:35 AM EST     -1.13 knots Max Ebb
Mon -- 06:14 AM EST     0.00 knots Slack
Mon -- 06:44 AM EST     Sunrise
Mon -- 08:25 AM EST     Moonrise
Mon -- 09:34 AM EST     0.86 knots Max Flood
Mon -- 12:35 PM EST     -0.00 knots Slack
Mon -- 03:09 PM EST     -0.89 knots Max Ebb
Mon -- 05:36 PM EST     Sunset
Mon -- 06:46 PM EST     0.00 knots Slack
Mon -- 07:32 PM EST     Moonset
Mon -- 09:27 PM EST     0.51 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.2-0.7-1.1-1.1-0.9-0.5-0.10.30.70.80.80.70.3-0.2-0.7-0.9-0.8-0.6-0.30.10.40.50.50.4

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 (10,2,3,4)
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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.