Wednesday, May24, 2017 L-36.com


Marine Weather and Tides
Big Coppitt Key, FL

Version 3.4
What's New / NOTES
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 6:38AMSunset 8:09PM Wednesday May 24, 2017 9:38 AM EDT (13:38 UTC) Moonrise 4:46AMMoonset 6:01PM Illumination 1% Phase: Waning Crescent; Moon at 28 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- 439 Am Edt Wed May 24 2017
.small craft advisory may be required tonight...
Today..South winds near 15 knots. Seas 2 to 3 feet. NEarshore waters a moderate chop. Winds and seas higher near scattered showers and isolated Thunderstorms...mainly in the afternoon.
Tonight..South to southwest winds increasing to 20 to 25 knots. Seas building to 3 to 5 feet. NEarshore waters becoming very rough. Numerous showers and scattered Thunderstorms.
Thursday..Southwest winds 20 to 25 knots...becoming west to northwest 10 to 15 knots late. Seas 4 to 6 feet...subsiding to 2 to 4 feet. NEarshore waters very rough...becoming choppy. Numerous showers and scattered Thunderstorms.
Thursday night..Winds becoming variable 5 to 10 knots. Seas subsiding to 1 to 3 feet. NEarshore waters becoming mostly smooth. Numerous showers and scattered Thunderstorms mainly before midnight.
Friday..Variable winds 5 to 10 knots. Seas 1 to 2 feet. NEarshore waters mostly smooth. Scattered showers and isolated Thunderstorms.
Friday night..East winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms.
Saturday..East winds 5 to 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop. Scattered showers and isolated Thunderstorms.
Saturday night..East to southeast winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light to moderate chop. Scattered showers and isolated Thunderstorms.
Sunday and Sunday night..East to southeast winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop. Isolated showers.

7 Day Forecast for Marine Location Near Big Coppitt Key, FL
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location: 24.55, -81.53     debug


Area Discussion for - Key West, FL
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Fxus62 kkey 240836
afdkey
area forecast discussion
national weather service key west fl
436 am edt Wed may 24 2017

Discussion
Currently - a deep layered amplified trough is moving into the
eastern united states, with its tail end dipping into the gulf of
mexico. As a result, pressures are falling in the mississippi
valley. Meanwhile, a broad surface ridge extends across cuba.

Gentle to moderate southerly breezes across the keys is bringing
in warm and humid conditions. Temperatures are hovering near 80
with dew points in the upper 70s. Outside a bit of inhibition down
low, there is ample CAPE above, but still some mid level dry air.

Shower activity has been limited this morning most shower and
thunderstorm activity has remained outside of the forecast area.

Forecast - a wet pattern is shaping up for the florida keys for
the next couple of days. The previously mentioned trough will
edge eastward across the gulf of mexico today, into the atlantic
on Thursday. Accelerating moist confluent low level flow, along
with some mid level cooling and support aloft will result in an
increasingly favorable environment for rounds of shower and
thunderstorm development. Some of this activity could be strong
and fast moving with the steering flow increasing to 25 to 30
knots this afternoon. Helicity however is expected to remain
fairly low. The wettest time periods will be from late this
afternoon to early Thursday night. There is significant
uncertainty on exactly when winds will strengthen. However all
guidance suggests that winds will trend sharply upwards tonight,
becoming windy as the gradient is pinched between the migrating
trough and the ridge to our south. Winds will relax significantly
late Thursday as the trough lifts out and leaving a very lack
luster gradient across the keys. Light and variable winds Friday
morning will gradually pick up gently out of the east to southeast
by the weekend as ridging resumes is normal location across the
florida peninsula.

Marine
A trough moving eastwards across the gulf of mexico will result in
an uptrend in winds as well as shower and thunderstorm activity.

Expect windy conditions to develop tonight, then slacken rapidly
late Thursday as the trough moves across the florida peninsula
then lifts out. A caution will be raised today for the bay and
deep gulf waters and an advisory will likely be required for all
keys waters tonight and Thursday.

Aviation
South to southwest crosswinds will gust to 20 knots at the eyw and
mth terminals through the forecast period.VFR will predominate
until this afternoon, when scattered showers and thunderstorms will
develop over cuba and the southeastern gulf of mexico. The cuban
storms will move quickly north-northeast through the straits of
florida, while the convection over the gulf will work slowly
southeast. Thus, periods of MVFR CIGS and ifr vis appear possible at
both terminals this evening and overnight. Convective wind gusts
will reach 25 to 30 knots.

Preliminary point temps pops
Key west 87 77 84 78 30 70 70 70
marathon 91 78 88 77 30 70 70 70

Key watches warnings advisories
Fl... None.

Gm... None.

Public marine fire... 11
aviation nowcasts... .Clr
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
KYWF1 - 8724580 - Key West, FL 15 mi50 min SSE 8.9 G 15 83°F 84°F1010.2 hPa
SANF1 - Sand Key, FL 20 mi34 min S 19 G 23 81°F 1011 hPa75°F
VCAF1 - 8723970 - Vaca Key, FL 25 mi50 min S 8.9 G 13 84°F 84°F1010.2 hPa
LONF1 - Long Key, FL 41 mi38 min SSW 16 G 17 81°F 83°F1011.1 hPa (-0.6)75°F
LRKF1 - Little Rabbit Key, FL 48 mi158 min 82°F
JKYF1 - Johnson Key, FL 48 mi158 min 83°F
MUKF1 - Murray Key, FL 49 mi98 min 82°F
PKYF1 - Peterson Key, FL 49 mi98 min 83°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, FL9 mi45 minS 1310.00 miPartly Cloudy83°F78°F85%1010.5 hPa
Key West International Airport, FL12 mi45 minS 1510.00 miFair82°F77°F85%1010.7 hPa

Wind History from NQX (wind in knots)
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Last 24hrS11S15S13SE13S13SE12SE9SE8SE7SE7SE8SE9SE13SE12SE13SE12S10S11S12S11S13S13S15S13
1 day agoSE9SE9SE12SE12SE9SE13
G19
SE12SE11SE9SE10SE10E11SE13SE13SE16
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2 days agoE13E14SE15E14E16E13E15E15E12E12E11E10E11E12E13SE11SE11SE7SE8E8E7E6SE7E8

Tide / Current Tables for Key Lois, southeast end, Florida
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Key Lois
Click for Map
Wed -- 01:44 AM EDT     0.17 feet Low Tide
Wed -- 05:46 AM EDT     Moonrise
Wed -- 06:38 AM EDT     Sunrise
Wed -- 07:50 AM EDT     2.08 feet High Tide
Wed -- 02:51 PM EDT     -0.38 feet Low Tide
Wed -- 07:01 PM EDT     Moonset
Wed -- 08:07 PM EDT     Sunset
Wed -- 09:12 PM EDT     1.41 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.20.20.40.81.31.722.121.61.10.50-0.3-0.4-0.20.10.50.91.31.41.41.1

Tide / Current Tables for Bahía Honda Harbor (Bridge) Florida Current
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Bahía Honda Harbor (Bridge) Florida Current
Click for Map
Wed -- 01:51 AM EDT     -2.60 knots Max Ebb
Wed -- 05:06 AM EDT     0.01 knots Slack
Wed -- 05:45 AM EDT     Moonrise
Wed -- 06:37 AM EDT     Sunrise
Wed -- 07:31 AM EDT     1.70 knots Max Flood
Wed -- 10:23 AM EDT     -0.00 knots Slack
Wed -- 01:56 PM EDT     -3.15 knots Max Ebb
Wed -- 05:19 PM EDT     0.00 knots Slack
Wed -- 07:00 PM EDT     Moonset
Wed -- 08:06 PM EDT     Sunset
Wed -- 08:11 PM EDT     2.52 knots Max Flood
Wed -- 11:32 PM EDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-1.6-2.4-2.6-2.2-1.4-0.111.61.61.20.4-0.7-2-2.9-3.1-2.8-1.9-0.512.12.52.41.70.7

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 (9,2,3,4)
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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.