Tuesday, March28, 2017 L-36.com


Marine Weather and Tides
Duck Key, FL

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:20AMSunset 7:43PM Tuesday March 28, 2017 9:22 PM EDT (01:22 UTC) Moonrise 6:49AMMoonset 7:27PM Illumination 2% 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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GMZ043 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- 433 Pm Edt Tue Mar 28 2017
Tonight..Variable winds near 10 knots early...becoming east. Seas 1 to 2 feet. NEarshore waters a light chop. Isolated showers.
Wednesday and Wednesday night..East to southeast winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop.
Thursday..Southeast winds near 15 knots. Seas 1 to 3 feet. NEarshore waters a moderate chop.
Thursday night..Southeast winds 15 to 20 knots. Seas 2 to 3 feet. NEarshore waters choppy.
Friday..South winds near 15 knots. Seas 1 to 3 feet. NEarshore waters a moderate chop.
Friday night..South to southwest winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Isolated showers.
Saturday..Variable winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Isolated showers.
Saturday night through Sunday night..Southeast winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Isolated showers.

7 Day Forecast for Marine Location Near Duck Key, FL
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location: 24.79, -80.88     debug


Area Discussion for - Key West, FL
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Fxus62 kkey 281924
afdkey
area forecast discussion
national weather service key west fl
324 pm edt Tue mar 28 2017

Discussion In the middle to upper level(700-200 mb), latest
available model streamline analysis overlaid on top of satelitte
imagery as of 200 pm depict a typically progressive early spring
middle and upper pattern, with one shortwave axis over the upper
ohio valley and the central appalachians. Upstream of that, the
northern terminus of the axis of a deep and protruding ridge is
oriented into the upper midwest from the western gulf of mexico,
and upstream of that, the axis of another narrow yet sharpening
full latitudinal trough is positioned from north central montana
down to southern arizona.

At the surface and in the lower to middle levels(surface to 700
mb), latest satelitte imagery overlaid with marine and land
surface observations and analysis as of 200 pm, details a broad weak
1018-1020 mb surface high pressure exists across the florida
peninsula and adjoining waters. The heat troughing over south
florida on the mesoscale, combined with this type of high pressure
trajectory, allows light to gentle northeast winds from the
surface combined with just enough moisture up thru about 500 mb,
resulting in a well developed cumulus cloudline parallel to much
of the length of the keys island chain. As such, around 20 plus
waterspouts have been observed and reported along this cloud
lines beginning after 1 pm and continuing at this writing.

Climatologically, these atmospheric conditions are normally
more favored to occur later in the spring, like around the first
week of may, when a much greater number of reports occur.

Currently Skies are partly to mostly cloudy across the keys
island chain and immediate adjoining waters as of 200 pm. Over
the islands, just sprinkles reported but south inside hawk channel
there have been very small showers of brief moderate rainfall
within the aforementioned cumulus cloud line that is responsible
for the outbreak of multiple waterspouts thus far. The best spots
along this line for formation occurring now are outside of the
rain showers indicated by key west radar. Several warnings have
been issued and there are active ones as well. Temperatures over
the islands have reached the lower 80s over the islands with
dewpoints in the upper 60s. Radar does detect only a few showers
along this boundary.

Short term Tonight thru Friday, firstly for the rest of the
day and this evening. Expect isolated showers to form along the
cumulus cloud line until the Sun sets, with additional
waterspouts likely as well, again where it isn't raining.

Mariners should avoid approaching these waterspouts at all times.

Weak ridging will remain in place across florida through
Thursday, where a surface frontal system will move southeast
across the eastern gulf of mexico and down the florida peninsula.

The light to gentle winds will become just south of due east
during Wednesday thru Thursday. Winds will pick up during Thursday
becoming moderate, and even moderate to fresh across the florida
straits Thursday night and Friday. Winds will veer to southerly
during Friday as well. Only limited moisture and associated low
level confluence will prompt a slight chance for showers during
Friday. High temperatures in the mid 80s and lows in the mid 70s
will be slightly above normal for this time of year.

Long term Friday night thru Tuesday. The models continue to
show the frontal system falling apart when it reaches the keys, so
winds will become light and variable for Friday night and Saturday
when this system falls apart. Another ridge will develop across
the florida peninsula allowing for gentle to moderate winds.

Enough moisture will be in the boundary layer to support slight
chances for showers thru this period. So will hold with 10
percent thru the period. High temperatures in the mid 80s and lows
in the mid 70s will continue to be slightly above normal for this
time of year.

Marine Mariners inside hawk channel off of the lower keys
should use caution and once again, avoid any waterspouts at all
costs! These are capable of turning over your boat and you could
be knocked unconscious and drown. Light to gentle northeast to
east breezes on the waters tonight will become gentle east to
southeast breezes Wed and Wed night, with moderate or moderate to
fresh southeast breezes Thursday through Friday. Scec conditions
seem likely across at least the florida straits thru these 3
periods, and possibly across hawk channel. Winds and seas should
let down again this weekend.

Aviation
Vfr conditions will prevail at eyw and mth this afternoon through at
least Wednesday morning. Sustained east winds of 5 to 10 knots from
just off the surface to about 3,000 feet will increase to 10 to 15
knots tonight.

Climate
On this date in florida keys weather history, in 2000, 1.10 inches
of rain fell at key west international airport. This set the daily
record for maximum rainfall measured in key west on march 28th, a
record which still stands 17 years later. Rainfall records at key
west date back to 1871.

Preliminary point temps/pops
Key west 72 84 73 84 / 10 - - -
marathon 71 86 73 86 / 10 - - -

Key watches/warnings/advisories
Fl... None.

Gm... None.

Public/marine... Futterman
aviation/nowcasts/warnings/climate/statements... Bs, cr
upper air/data collection... ... Vickery, devanas, fling
visit us on the web at weather.Gov/key
follow us on facebook and twitter at:


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LONF1 - Long Key, FL 4 mi83 min S 5.1 G 7 76°F 78°F1015.9 hPa (+0.5)66°F
PKYF1 - Peterson Key, FL 11 mi83 min 78°F
VCAF1 - 8723970 - Vaca Key, FL 13 mi53 min SSE 1.9 G 5.1 76°F 79°F1016.4 hPa
LRKF1 - Little Rabbit Key, FL 14 mi143 min 79°F
JKYF1 - Johnson Key, FL 18 mi143 min 80°F
BOBF1 - Bob Allen, FL 19 mi83 min 81°F
WRBF1 - Whipray Basin, FL 21 mi143 min SSE 2.9 80°F
MUKF1 - Murray Key, FL 22 mi83 min 78°F
BKYF1 23 mi83 min 85°F
GBTF1 - Garfield Bight, FL 26 mi83 min 84°F
TBYF1 27 mi83 min 84°F
BNKF1 - Butternut Key, FL 28 mi83 min 78°F
LMDF1 - Little Madeira, FL 30 mi83 min 81°F
WWEF1 31 mi143 min 82°F
MLRF1 - Molasses Reef, FL 31 mi143 min SSE 7 G 8 76°F 79°F1015.6 hPa (-0.4)
TRRF1 - Taylor River, FL 32 mi83 min 83°F
DKKF1 - Duck Key, FL 34 mi143 min 79°F
LRIF1 34 mi83 min 80°F
TCVF1 - Trout Cove, FL 35 mi143 min 82°F
CWAF1 36 mi143 min 79°F
BWSF1 - Blackwater Sound, FL 36 mi143 min 80°F
LBSF1 - Little Blackwater, FL 38 mi143 min 80°F
NRRF1 38 mi83 min 80°F
LSNF1 - Long Sound, FL 38 mi83 min 81°F
HCEF1 - Highway Creek, FL 40 mi143 min 82°F
GBIF1 - Gunboat Island, FL 41 mi83 min 76°F
SREF1 41 mi83 min 76°F
TPEF1 - Tarpon Bay East, FL 43 mi143 min 81°F
CANF1 - Cane Patch, FL 44 mi143 min 77°F
HREF1 45 mi83 min 76°F
BDVF1 - Broad River, FL 48 mi83 min 78°F

Wind History for Vaca Key, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Marathon, Marathon Airport, FL10 mi30 minSSE 310.00 miFair78°F68°F71%1015.8 hPa

Wind History from MTH (wind in knots)
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Last 24hrE5E8E6E4NE5E4NE4NE3NE4NE6NE5NE7NE7NE7N7NE6NE8N7544S4CalmSE3
1 day agoE9E8E7E9E7E6E7E6E6NE6NE6N8N8NE9NE10NE10NE10NE10E9E10
G15
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2 days agoE6
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E6E8E9

Tide / Current Tables for Conch Key, eastern end, Florida
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Conch Key
Click for Map
Tue -- 03:40 AM EDT     -0.06 feet Low Tide
Tue -- 07:19 AM EDT     Sunrise
Tue -- 07:49 AM EDT     Moonrise
Tue -- 09:46 AM EDT     1.39 feet High Tide
Tue -- 04:05 PM EDT     -0.20 feet Low Tide
Tue -- 07:38 PM EDT     Sunset
Tue -- 08:26 PM EDT     Moonset
Tue -- 10:24 PM EDT     1.35 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.60.2-0-00.10.40.81.11.31.41.310.60.2-0.1-0.2-0.10.20.50.91.21.31.3

Tide / Current Tables for Long Key Viaduct, Florida Current
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Long Key Viaduct
Click for Map
Tue -- 12:50 AM EDT     -0.00 knots Slack
Tue -- 04:04 AM EDT     -1.71 knots Max Ebb
Tue -- 07:18 AM EDT     Sunrise
Tue -- 07:20 AM EDT     0.00 knots Slack
Tue -- 07:48 AM EDT     Moonrise
Tue -- 09:54 AM EDT     1.30 knots Max Flood
Tue -- 01:01 PM EDT     -0.00 knots Slack
Tue -- 04:18 PM EDT     -1.74 knots Max Ebb
Tue -- 07:32 PM EDT     0.00 knots Slack
Tue -- 07:38 PM EDT     Sunset
Tue -- 08:26 PM EDT     Moonset
Tue -- 10:16 PM EDT     1.51 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.6-0.1-0.9-1.5-1.7-1.6-1.1-0.30.51.11.31.10.70-0.7-1.4-1.7-1.6-1.2-0.50.41.11.51.4

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 (21,6,7,8)
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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.