Monday, November20, 2017 L-36.com


Marine Weather and Tides
Gulf Stream, 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 6:42AMSunset 5:29PM Monday November 20, 2017 8:33 AM EST (13:33 UTC) Moonrise 8:23AMMoonset 7:24PM 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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AMZ650 Coastal Waters From Jupiter Inlet To Deerfield Beach Fl Out 20 Nm- Waters From Jupiter Inlet To Deerfield Beach Fl From 20 To 60 Nm- 327 Am Est Mon Nov 20 2017
.small craft advisory in effect through Tuesday morning...
Today..East northeast winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas to 9 feet. Period 7 seconds. Intracoastal waters choppy in exposed areas. A chance of showers.
Tonight..East winds 15 to 20 knots with gusts to around 30 knots. Seas 5 to 7 feet with occasional seas to 9 feet. Period 6 seconds. Intracoastal waters choppy in exposed areas. A chance of showers in the evening...then showers likely and a slight chance of Thunderstorms after midnight.
Tuesday..Southeast winds 10 to 15 knots along the coast to southeast 15 to 20 knots in the gulf stream. Seas 4 to 6 feet with occasional seas to 8 feet. Period 7 seconds. Intracoastal waters a moderate chop. A chance of showers and a slight chance of Thunderstorms.
Tuesday night..South winds 5 to 10 knots becoming west southwest after midnight. Seas 3 to 5 feet with occasional seas to 6 feet. Period 7 seconds. Intracoastal waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Wednesday..East northeast winds 5 to 10 knots. Seas 2 to 3 feet. Intracoastal waters a light chop. A slight chance of showers in the afternoon.
Wednesday night..South southeast winds 5 to 10 knots. Seas 2 to 3 feet. Intracoastal waters a light chop. A chance of showers and a slight chance of Thunderstorms.
Thursday..Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Intracoastal waters a light chop. Showers likely and a slight chance of Thunderstorms.
Thursday night..West winds around 5 knots. Seas around 2 feet. Intracoastal waters smooth. Showers likely and a slight chance of Thunderstorms.
Friday..Northwest winds around 5 knots becoming east southeast in the evening. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters smooth. A chance of showers.
AMZ600 Synopsis For Jupiter Inlet To Ocean Reef Fl Out To 60 Nm And For East Cape Sable To Bonita Beach Fl Out To 60 Nm- 327 Am Est Mon Nov 20 2017
Synopsis..Fresh northeast breezes this morning behind a cold front will veer to easterly tonight. Seas will build to around 7 feet over the gulf stream today and tonight. A moderate southeast breeze will establish Tuesday as the front retreats northward as a warm front. Showers and scattered Thunderstorms will steadily increase in coverage this afternoon through Tuesday. Winds and seas will improve late Tuesday into the weekend, but showers and scattered Thunderstorms will again be possible Thursday into Friday.
Gulf stream hazards..Northeast winds 15 to 25 knots this morning becoming easterly tonight. Seas around 7 feet. The approximate location of the west wall of the gulf stream as of nov 18, 2017 at 1200 utc... 5 nautical miles east northeast of fowey rocks. 23 nautical miles southeast of port everglades. 13 nautical miles east southeast of lake worth. 12 nautical miles east of jupiter inlet. This data courtesy of the naval oceanographic office.

7 Day Forecast for Marine Location Near Gulf Stream, FL
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location: 26.46, -79.95     debug


Area Discussion for - Miami-South Florida, FL
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Fxus62 kmfl 201148
afdmfl
area forecast discussion
national weather service miami fl
648 am est Mon nov 20 2017

Aviation
The wind is forecast to become NE this morning and increase to
around 15kts, with a few higher gusts. Shra is moving into the
area already this morning, so, vcsh is in TAF for the entire
period for most east coast terminals. In generalVFR conditions,
other than only brief ifr restrictions possible in and near
showers through the day.

Prev discussion issued 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.

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... 13
beach forecast... 22 ks


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LKWF1 - 8722670 - Lake Worth, FL 11 mi45 min NE 23 G 26 74°F 79°F1018.4 hPa64°F
PVGF1 - Port Everglades Channel, FL 27 mi39 min NNW 5.1 G 9.9 69°F 1016.9 hPa63°F
VAKF1 - 8723214 - Virginia Key, FL 52 mi51 min NNW 5.1 G 8 70°F 78°F1016.6 hPa

Wind History for Lake Worth Pier, FL
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boca Raton, Boca Raton Airport, FL10 mi41 minNE 1010.00 miMostly Cloudy72°F64°F78%1017.3 hPa
Pompano Beach, Pompano Beach Airpark, FL17 mi40 minNNW 810.00 miMostly Cloudy70°F64°F82%1017.3 hPa
West Palm Beach - Palm Beach International Airport, FL18 mi40 minNE 13 G 1810.00 miMostly Cloudy74°F62°F67%1017.7 hPa
Fort Lauderdale, Fort Lauderdale Executive Airport, FL21 mi40 minN 510.00 miOvercast69°F63°F81%1017.5 hPa

Wind History from BCT (wind in knots)
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Last 24hrW5W5W8NW7W9NW9W8W5
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W5CalmCalm----Calm--------------N7NE10
1 day agoCalmCalmE10E7SE10E7NE9E6E6NE4N3CalmCalmCalmCalm--------------NW4Calm
2 days agoNE7NE8E11
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--NE12NE13NE11NE11NE10CalmE5--------------CalmCalm

Tide / Current Tables for Delray Beach, ICWW, Florida
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Delray Beach
Click for Map
Mon -- 04:59 AM EST     0.24 feet Low Tide
Mon -- 06:43 AM EST     Sunrise
Mon -- 08:23 AM EST     Moonrise
Mon -- 10:58 AM EST     3.04 feet High Tide
Mon -- 05:26 PM EST     0.64 feet Low Tide
Mon -- 05:28 PM EST     Sunset
Mon -- 07:24 PM EST     Moonset
Mon -- 11:03 PM EST     2.79 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.521.30.80.40.20.511.72.32.832.92.51.91.30.90.70.71.11.62.22.62.8

Tide / Current Tables for South Delray Beach, ICWW, Florida
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South Delray Beach
Click for Map
Mon -- 04:50 AM EST     0.33 feet Low Tide
Mon -- 06:42 AM EST     Sunrise
Mon -- 08:23 AM EST     Moonrise
Mon -- 10:54 AM EST     3.17 feet High Tide
Mon -- 05:20 PM EST     0.79 feet Low Tide
Mon -- 05:28 PM EST     Sunset
Mon -- 07:24 PM EST     Moonset
Mon -- 10:55 PM EST     2.89 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.621.40.80.40.30.61.11.92.533.232.621.510.80.91.21.82.32.82.9

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 (8,2,3,4)
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Ground Weather Radar Station Miami, FL
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weather_mapweather_map weather_map

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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.