Friday, April20, 2018 L-36.com


Marine Weather and Tides
South Palm Beach, FL

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:44AMSunset 7:42PM Friday April 20, 2018 11:42 PM EDT (03:42 UTC) Moonrise 9:33AMMoonset 11:30PM Illumination 32% Phase: Waxing Crescent; Moon at 6 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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7 Day Forecast for Marine Location Near South Palm Beach, FL
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location: 26.43, -77.13     debug


Area Discussion for - Miami-South Florida, FL
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Fxus62 kmfl 210010
afdmfl
area forecast discussion
national weather service miami fl
810 pm edt Fri apr 20 2018

Aviation
Easterly winds below 10 knots prevail tonight.VFR conditions
continue through Saturday early in the afternoon, then periods of
vcsh and increasing low cloud cover may affect the atlantic
terminals, along with increasing ese winds. Only exception will be
kapf where afternoon sea breezes will again bring westerly flow
along the gulf coast.

Prev discussion issued 748 pm edt Fri apr 20 2018
update...

mostly clear skies are still prevalent across south florida with
the sea breeze advancements diminishing. Expecting light easterly
flow to become dominant overnight as the surface high pressure
axis slides eastward into the western atlantic. The SREF wasn't
too excited about fog development tonight, so opted to keep
mention out of the latest grid package. Other than loading in the
latest wind and cloud cover guidance, all other variables
appeared on track.

Prev discussion... Issued 416 pm edt Fri apr 20 2018
discussion...

weak high pressure over the peninsula has allowed for another warm
and dry day across south florida. In response to light southerly
flow across the region, a thermal surface low pressure center has
developed in the interior, allowing both sea breezes to push well
inland from their respective coasts. Latest wpc analysis depicts
a cold front stalled east to west across central florida, north of
lake okeechobee. As the front becomes nearly stationary tonight,
it should act to increase easterly flow, especially noticeable
over the atlantic and adjacent east coast metro. Expecting
moisture to deepen in the lower levels with GFS forecast pwat
increasing from around an inch to above 1.33". Weak lift generated
from the stationary front, combined with this bump up in moisture
should aid in the development of showers over the atlantic
waters, then advect inland as Saturday progresses. Instability
parameters appear rather weak on Saturday, though a rumble of
thunder can not be ruled out in northern portions of our cwa.

Late this weekend through mid next week: Saturday night into
Sunday, mid range models continue to prog a potent low pressure
system to slide eastward along the southern conus. Moisture ahead
of the associated cold front will deepen further, as low level
winds veer more south southeasterly. As confluence overspreads
south florida and various vorticity maxima pass over the area,
the atmosphere may begin to turn more unstable. Sunday afternoon,
showers remain likely, with a chance of thunderstorms, esepcailly
over the interior, with focus shifting to the northeastern
portion of the peninsula as evening approaches. On Monday, flow
continues to veer southerly or even south southwesterly. Expect
repeat of Sundays activity with showers likely and a chance of
thunderstorms. As forecast pwats increase to near 1.75", periods
of moderate to occasionally heavy rain remain possible along
central and northern portions of the east coast metro region. Both
the ECMWF and GFS prog the aforementioned front to push through
south florida sometime late Tuesday into Wednesday. In the wake of
the front, dry conditions are forecast prevail mid to late next
week.

Marine...

a cold front will push southward down the florida
peninsula and stall over the lake okeechobee region tonight.

Marine conditions will begin to deteriorate starting tonight as
wind speeds pick up, particularly over the atlantic waters,
where a small craft advisory has been hoisted. Showers and
thunderstorms will bring locally higher winds and waves late this
weekend into early next week. Conditions will gradually improve
early to mid next week.

Aviation...

the winds will be easterly around 5 to 10 knots this afternoon
before decreasing to around 5 knots tonight, except for kapf taf
site where the winds will be westerly this afternoon around 5 to
10 knots. The weather will remain dry over all of the TAF sites
along withVFR conditions for the ceiling and vis through tonight.

Preliminary point temps pops
West palm beach 71 83 71 81 20 30 50 50
fort lauderdale 73 83 73 81 10 30 40 50
miami 72 84 72 82 10 20 40 40
naples 68 86 69 85 0 20 20 40

Mfl watches warnings advisories
Fl... None.

Am... Small craft advisory from 5 pm Saturday to 5 am edt Sunday for
amz651-671.

Small craft advisory from 11 am Saturday to 5 am edt Sunday for
amz650-670.

Gm... None.

Aviation... 17 ar


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boca Raton, Boca Raton Airport, FL157 mi55 minE 810.00 miPartly Cloudy77°F68°F74%1020 hPa

Wind History from BCT (wind in knots)
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Last 24hr--------------W3--NW5--CalmE5E5E9NE8NE10E12E11NE7E7E7E7E8
1 day ago--------------CalmNW3NW3NW3W34SE10SE5SE5SE6E6SE8SE6SE6456
2 days ago--------------N3CalmNW3E5E6--SE9SE10--E12E7--SE10SE7SE5--SE5

Tide / Current Tables for Pelican Harbour, Abaco Island, Bahamas
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Pelican Harbour
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Fri -- 06:25 AM EDT     0.71 feet Low Tide
Fri -- 06:39 AM EDT     Sunrise
Fri -- 10:32 AM EDT     Moonrise
Fri -- 12:24 PM EDT     3.32 feet High Tide
Fri -- 06:27 PM EDT     0.73 feet Low Tide
Fri -- 07:34 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.93.63.12.41.71.10.70.81.11.72.433.33.32.92.31.71.10.80.81.11.82.53.2

Tide / Current Tables for Eleuthera Island (west coast), Bahamas
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Eleuthera Island (west coast)
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Fri -- 01:44 AM EDT     3.78 feet High Tide
Fri -- 06:38 AM EDT     Sunrise
Fri -- 08:27 AM EDT     0.82 feet Low Tide
Fri -- 10:31 AM EDT     Moonrise
Fri -- 02:14 PM EDT     3.24 feet High Tide
Fri -- 07:30 PM EDT     Sunset
Fri -- 08:26 PM EDT     0.85 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.23.73.83.532.31.71.10.90.91.21.82.433.23.12.82.21.61.10.90.91.21.8

Weather Map and Satellite Images
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wmap_A
GOES Local Image of Southeast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Miami-South Florida, FL (23,6,7,8)
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Ground Weather Radar Station Miami, FL
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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.