Monday, November20, 2017 L-36.com


Marine Weather and Tides
Everglades, 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 6:48AMSunset 5:36PM Monday November 20, 2017 4:17 AM EST (09:17 UTC) Moonrise 8:28AMMoonset 7:31PM Illumination 3% 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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GMZ656 Coastal Waters From Chokoloskee To Bonita Beach Fl Out 20 Nm- Coastal Waters From East Cape Sable To Chokoloskee Fl Out 20 Nm- 327 Am Est Mon Nov 20 2017
.small craft should exercise caution...
Today..East northeast winds 10 to 15 knots nearshore and east northeast 15 to 20 knots offshore. Seas around 2 feet nearshore and 2 to 4 feet with occasional to 5 feet offshore. Period 3 seconds. Bay and inland waters a moderate chop. A chance of showers in the afternoon.
Tonight..East northeast winds 10 to 15 knots nearshore and east 15 to 20 knots offshore. Seas less than 2 feet nearshore and 2 to 3 feet offshore. Period 3 seconds. Bay and inland waters a moderate chop. A chance of showers.
Tuesday..NEarshore, east southeast winds 5 to 10 knots with gusts to around 20 knots becoming southwest in the afternoon, seas less than 2 feet. Offshore, east southeast winds 15 to 20 knots becoming southwest 5 to 10 knots in the afternoon, seas 2 to 3 feet subsiding to less than 2 feet in the afternoon. Period 2 seconds. Bay and inland waters a moderate chop. A chance of showers in the morning...then showers likely and a slight chance of Thunderstorms in the afternoon.
Tuesday night..Northeast winds 5 knots. Seas less than 2 feet. Period 2 seconds. Bay and inland waters smooth. A slight chance of showers in the evening.
Wednesday..NEarshore, north northeast winds around 5 knots becoming west in the afternoon. Offshore, northeast winds 5 knots becoming west northwest in the afternoon. Seas less than 2 feet. Bay and inland waters a light chop. A slight chance of showers in the morning.
Wednesday night..NEarshore, northwest winds 5 to 10 knots in the evening becoming south 5 knots in the morning. Variable winds 5 knots or less after midnight. Offshore, west southwest winds 5 knots in the evening becoming south around 5 knots in the morning. Seas less than 2 feet. Bay and inland waters a light chop. A chance of showers.
Thursday..Southwest winds 5 to 10 knots. Seas less than 2 feet. Bay and inland waters a light chop. Showers likely and a slight chance of Thunderstorms.
Thursday night..Southwest winds around 5 knots. Seas around 2 feet. Bay and inland waters smooth. Showers likely and a slight chance of Thunderstorms.
Friday..NEarshore, east northeast winds 5 knots becoming north in the afternoon. Offshore, north northeast winds 5 to 10 knots. Seas less than 2 feet nearshore and 2 to 3 feet offshore. Bay and inland waters a light chop. A chance of showers.
GMZ600 Synopsis For Destin Fl To Pascagoula Ms Out 60 Nm Including Mobile Bay- 309 Am Cst Mon Nov 20 2017
Synopsis..A moderate offshore flow subsides this morning as high pressure moves over the region. A light easterly wind will develop on today as high pressure shifts east to the eastern seaboard. A moderate to strong northerly flow is expected Wednesday through early Friday as a surface trough develops over the northeast gulf tonight, then a surface low develops over the east central gulf Wednesday night

7 Day Forecast for Marine Location Near Everglades, FL
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location: 25.86, -81.39     debug


Area Discussion for - Miami-South Florida, FL
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Fxus62 kmfl 200811
afdmfl
area forecast discussion
national weather service miami fl
311 am est Mon nov 20 2017

Discussion
Synopsis: an unsettled pattern setting up as a front stalls over
the region today and a series of disturbances moves over the
region Tuesday and again late in the week.

Near term (today-tonight): the front now moving through south
florida will stall out later today near the southern tip of the
peninsula. Showers have been forming overnight over the atlantic
waters along and behind the surface boundary, and the front will
continue to be a focus for showers today. As winds veer to more
easterly and the residual boundary begins to retreat northward,
the showers are likely to spread back over south florida from
southeast to northwest this afternoon and tonight.

Short term (Tuesday-Wednesday): as the remnant front continues
moving northward Tuesday, the greatest concentration of showers
will also shift northward into the lake okeechobee palm beach
region and up into central florida. However, with a relatively
moist air mass in place and a shortwave trough approaching from
the gulf, scattered showers will be possible at times farther
south Tuesday. The strengthening wind fields aloft and focused
upward motion ahead of the shortwave trough should be sufficient
for a few scattered thunderstorms Tuesday, particularly northern
sections closer to the front. Wednesday now appears to be a
relatively dry day with the remnant surface boundary north of the
area and lower tropospheric subsidence in the wake of the
departing shortwave trough.

Medium range (Thursday-Friday night): medium range models are
still having some difficulty with a complex mid troposphere
evolution expected. What they agree on is some vorticity dropping
into the gulf Thursday, prompting cyclogenesis by Thursday morning
along the low level shear axis (remnant front). The timing of the
main shortwave trough turning the corner and lifting out is still
tricky, with the GFS now a bit faster than the ecmwf. So the
period from Thursday afternoon through early Friday will have the
highest chance for showers and scattered thunderstorms, but some
rain risk may stretch into late Friday if the slower ecmwf
solution is correct.

Weekend: although there air mass behind the late week storm
system is not particularly cold, steadily drier air should invade
the region, bringing clearing skies Saturday and allowing low
temperatures to fall into the lower 50s northwest to lower 60s
southeast beaches Sunday morning.

Marine
Northerly wind surge behind the front is bringing 20-25 knot winds
to the atlantic and gulf waters early this morning. Winds on the
gulf side will diminish this afternoon as the front washes out,
but the pressure gradient will remain tight over the atlantic
waters through tonight as wind veer around to easterly, so
hazardous boating conditions will continue. The fresh breeze will
be accompanied by significant wave heights of 7 feet or so in the
gulf stream. Conditions improve Tuesday on through the rest of
the week, though scattered thunderstorms will be possible Tuesday
and again on Thursday into Friday.

Beach forecast
There will be a moderate risk of rip currents at the atlantic
beaches today as onshore winds increase. If winds come around to
easterly and increase faster than currently forecast, a later
upgrade to high risk may become necessary. Regardless, beachgoers
should be aware of the risk of rip currents today.

Prev discussion issued 120 am est Mon nov 20 2017
aviation...

cold front moving quietly through south florida will bring little
wind change but increasing clouds. At naples, MVFR CIGS will be
periodic through the overnight, and cant rule out that some of
this reaches kpbi, otherwise,VFR conditions should prevail.

Scattered showers should gradually spread westward into east coast
terminals midday, with activity persisting through the overnight.

North wind will increase a bit after daybreak, then expect NE wind
10-14 kt with gusts over 20 this afternoon.

Preliminary point temps pops
West palm beach 79 72 81 67 30 60 50 20
fort lauderdale 79 73 83 69 40 60 40 20
miami 80 72 84 69 40 60 40 20
naples 83 67 83 66 30 20 60 20

Mfl watches warnings advisories
Fl... None.

Am... Small craft advisory until 7 am est Tuesday for amz650-651-670-
671.

Gm... Small craft advisory until 11 am est this morning for gmz676.

Update... 22 ks
discussion... 22 ks
marine... 22 ks
aviation... 23 sk


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RKXF1 - Rookery Bay Reserve, FL 21 mi92 min 66°F 63°F
LMRF1 - Lostmans River, FL 24 mi77 min 75°F
WIWF1 - Willy Willy, FL 26 mi77 min 74°F
NPSF1 - 8725110 - Naples, FL 29 mi47 min NNE 8 G 13 75°F1015.8 hPa
BDVF1 - Broad River, FL 34 mi77 min 75°F
HREF1 35 mi77 min 74°F
CANF1 - Cane Patch, FL 38 mi137 min 76°F
GBIF1 - Gunboat Island, FL 38 mi77 min 75°F
TPEF1 - Tarpon Bay East, FL 38 mi137 min 76°F
SREF1 38 mi77 min 76°F
NRRF1 44 mi77 min 75°F
CWAF1 44 mi137 min 76°F
LRIF1 48 mi77 min 76°F

Wind History for Naples, FL
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Naples, Naples Municipal Airport, FL28 mi24 minNE 910.00 miMostly Cloudy65°F63°F93%1015.7 hPa

Wind History from APF (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmW6W8W7W9SW8W7W7W6W6W5W4W3NW6N4N4N7N8NE8NE9
1 day agoNE3NE3NE3NE6NE5E7NE7Calm3W8W7W7W5W4W4NW4CalmCalmCalmCalmCalmCalmCalmCalm
2 days agoNE7N7NE9NE10NE11NE10NE10NE11
G17
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G16
NE11NE9NE6NE5NE5NE5E6NE5NE5E6E5E4NE4

Tide / Current Tables for Everglades City, Barron River, Florida
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Everglades City
Click for Map
Mon -- 02:18 AM EST     3.07 feet High Tide
Mon -- 06:47 AM EST     Sunrise
Mon -- 08:28 AM EST     Moonrise
Mon -- 10:40 AM EST     -0.10 feet Low Tide
Mon -- 04:03 PM EST     2.56 feet High Tide
Mon -- 05:34 PM EST     Sunset
Mon -- 07:30 PM EST     Moonset
Mon -- 10:37 PM EST     0.88 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.92.73.132.82.41.91.30.80.3-0-0.10.41.222.42.62.52.21.81.51.20.90.9

Tide / Current Tables for Indian Key, Florida
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Indian Key
Click for Map
Mon -- 12:48 AM EST     4.60 feet High Tide
Mon -- 06:47 AM EST     Sunrise
Mon -- 08:28 AM EST     Moonrise
Mon -- 08:33 AM EST     -0.18 feet Low Tide
Mon -- 02:33 PM EST     3.83 feet High Tide
Mon -- 05:35 PM EST     Sunset
Mon -- 07:31 PM EST     Moonset
Mon -- 08:30 PM EST     1.51 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.44.64.43.832.11.20.4-0.1-0.10.61.72.73.43.83.83.42.92.41.91.61.62.23.3

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 Miami-South Florida, FL (4,6,7,8)
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Ground Weather Radar Station Miami, 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.