Tuesday, March28, 2017 L-36.com

Marine Weather and Tides
Marco Island, 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 9:49 AM EDT (13:49 UTC) Moonrise 6:52AMMoonset 7:31PM Illumination 1% Phase: Waxing Crescent; Moon at 1 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- 329 Am Edt Tue Mar 28 2017
Today..East northeast winds around 5 knots becoming west in the afternoon. Seas less than 2 feet. Period 2 seconds. Bay and inland waters a light chop.
Tonight..North winds 5 to 10 knots becoming east southeast after midnight. Seas less than 2 feet. Period 2 seconds. Bay and inland waters a light chop.
Wednesday..Southeast winds 5 to 10 knots becoming south in the afternoon. Seas less than 2 feet. Period 2 seconds. Bay and inland waters a light chop.
Wednesday night..South winds around 5 knots becoming east after midnight. Seas less than 2 feet. Period 2 seconds. Bay and inland waters a light chop.
Thursday..South southeast winds 5 to 10 knots. Seas less than 2 feet. Bay and inland waters a light chop.
Thursday night..Southeast winds 10 to 15 knots. Seas around 2 feet. Bay and inland waters a light chop.
Friday..South winds 10 to 15 knots. Seas 2 to 3 feet. Bay and inland waters a light chop.
Friday night..South southwest winds 5 to 10 knots. Seas around 2 feet. Bay and inland waters a light chop. A slight chance of showers.
Saturday..West winds 5 to 10 knots. Seas 2 to 3 feet. Bay and inland waters a light chop.
GMZ600 Synopsis For Destin Fl To Pascagoula Ms Out 60 Nm Including Mobile Bay- 520 Am Cdt Tue Mar 28 2017
Synopsis..A moderate to occasionaly strong southerly wind flow will continue over the marine area through Thursday morning as strong high pressure continues over the western atlantic and eastern gulf combined with afternoon heating and local seabreeze effects. Southerly winds and seas will build on Thursday ahead of a cold front approaching from the west. Showers and Thunderstorms are expected ahead and along the front with a few strong to severe Thunderstorms possible mostly Thursday and Thursday night. A moderate to strong westerly flow is expected in the wake of the front Friday through early Saturday.

7 Day Forecast for Marine Location Near Marco Island, FL
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location: 25.97, -81.71     debug

Area Discussion for - Miami-South Florida, FL
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Fxus62 kmfl 280738
area forecast discussion
national weather service miami fl
338 am edt Tue mar 28 2017

Today-Thursday: radar is showing a few sprinkles and light showers
over the atlantic waters this morning where the light offshore
land breeze is interacting with the broader light easterly flow. A
brief sprinkle may reach land before daybreak, but otherwise dry
conditions will prevail.

High pressure at the surface and aloft will be in control for
much of the week, with tranquil and generally dry weather
continuing across south florida. Mostly sunny skies will prevail,
with some afternoon cumulus development as both the gulf and east
coast seabreezes develop and move inland. The main concern will
be the potential for patchy radiational fog development over the
interior and gulf coast the next few nights
temperatures will be near to slightly above normal through Thursday,
especially for the interior where the seabreezes will be late to
reach. Highs will be in the low to mid 80s for east and gulf coasts,
and upper 80s to near 90 for the interior. Lows will generally be in
the 60s, though some east coast locations may linger closer to 70.

Friday-Sunday: while details between the GFS and ECMWF differ, both
continue to show an upper level low and associated surface low
crossing the central plains mid week before lifting out through the
oh/tn valleys and into the east coast late week.

The GFS has a broader and more disorganized mid-level system, with
more of the energy split between the main features crossing the
plains and a southern extension moving through northern mexico and
texas into the gulf. This results in a stronger and further south
surface low and front crossing the gulf into the fl peninsula Friday
and Saturday. The ECMWF keeps a more coherent upper level low
crossing the plains with a weaker southern extension, and as a
result most of the energy lifts further north up the east coast and
a much weaker front moves into fl. Other ensemble members support a
forecast closer to the ECMWF with a weaker front moving through

Timing-wise, it now appears most of Friday will remain dry under
very warm and breezy south-southeast flow. Showers will overspread
the region later in the day, with the potential continuing overnight
and into Saturday as the boundary slows down. Given the warm
daytime temperatures and an active southern stream jet, even with
the less robust ECMWF solution, a few thunderstorms can't be
ruled out. Drier conditions arrive for Sunday as the front moves
out, though little change in temperature is expected.

Marine Favorable boating conditions are expected through much of
the week as high pressure continues to build into the state from the
northeast. East-southeast winds 10 knots or less are expected
through Thursday, with the gulf coast breeze bringing winds around
to the west-northeast along the coast each afternoon. Seas generally
2ft or less.

The next marine concerns may begin Thursday night into Friday as
south-southeasterly flow strengthens ahead of an approaching frontal
boundary along with building seas in the atlantic.

Aviation Light east flow becomes calm overnight across all
terminals with CIGS above 3kft. Due to the lighter wind flow,
expect some patchy areas of fog developing into the early morning
hrs mainly near apf where CIGS northeast of the site are already
ovc around 4kft. CIGS will continue lowering to MVFR conditions
with some areas of patchy fog before burning off quickly after
sunrise. By 15z, east wind around 10 knots will prevail withVFR
conditions through sunset. Expect west gulf breeze to shift winds
southwest at the apf site around 18z.

Fire weather Dry conditions and light easterly winds are expected
through much of the week, with the gulf and east coast seabreezes
developing and moving inland each afternoon, though speeds will
generally remain 10 mph or less. Warm temperatures are expected,
especially over the interior where afternoon temperatures may reach
to 90 degrees in some locations. This will allow relative humidity
values to drop to 35-40 percent over the interior each afternoon
through Thursday.

Preliminary point temps/pops
West palm beach 82 65 83 66 / 0 0 0 0
fort lauderdale 82 69 82 70 / 0 0 0 0
miami 83 68 84 69 / 0 0 0 0
naples 82 65 84 64 / 0 0 0 0

Mfl watches/warnings/advisories
Fl... None.

Am... None.

Gm... None.

Discussion... 88/alm
marine... 88/alm
aviation... 67/mt
fire weather... 88/alm

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
RKXF1 - Rookery Bay Reserve, FL 6 mi65 min NE 1.9 63°F 60°F
NPSF1 - 8725110 - Naples, FL 12 mi116 min 73°F1017 hPa
WPLF1 - Watson Place, FL 30 mi110 min 74°F
CNBF1 - Cannon Bay, FL 33 mi110 min 76°F
LMRF1 - Lostmans River, FL 41 mi110 min 74°F
WIWF1 - Willy Willy, FL 44 mi110 min 76°F
LBRF1 - Broad River Lower, FL 45 mi170 min 74°F
FMRF1 - 8725520 - Fort Myers, FL 48 mi50 min E 1.9 G 4.1 71°F 76°F1017.9 hPa (+2.1)

Wind History for Naples, FL
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Naples, Naples Municipal Airport, FL13 mi57 minENE 310.00 miFair70°F62°F76%1017.9 hPa

Wind History from APF (wind in knots)
Last 24hrNE9E85E7E6SW13W9W9W10W7NW3N4NE5NE7E9E4E4CalmCalmCalmE3CalmNE3NE3
1 day agoE10NE11E8
2 days agoE11E11

Tide / Current Tables for Marco, Big Marco River, Florida
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Tue -- 01:47 AM EDT     2.20 feet High Tide
Tue -- 07:22 AM EDT     Sunrise
Tue -- 07:52 AM EDT     Moonrise
Tue -- 08:14 AM EDT     -0.14 feet Low Tide
Tue -- 02:05 PM EDT     2.22 feet High Tide
Tue -- 07:42 PM EDT     Sunset
Tue -- 08:28 PM EDT     -0.37 feet Low Tide
Tue -- 08:30 PM EDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Coon Key, Florida
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Coon Key
Click for Map
Tue -- 02:24 AM EDT     3.63 feet High Tide
Tue -- 07:21 AM EDT     Sunrise
Tue -- 07:51 AM EDT     Moonrise
Tue -- 08:36 AM EDT     -0.02 feet Low Tide
Tue -- 02:31 PM EDT     3.72 feet High Tide
Tue -- 07:41 PM EDT     Sunset
Tue -- 08:30 PM EDT     Moonset
Tue -- 09:02 PM EDT     -0.32 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
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Weather Map
IR Satellite Image from GEOS

GOES Local Image of Southeast    EDIT

Wind Forecast for Miami-South Florida, FL (9,2,3,4)
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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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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.