Tuesday, March20, 2018 L-36.com

Marine Weather and Tides
Manalapan, 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 7:16AMSunset 7:27PM Tuesday March 20, 2018 9:27 AM EDT (13:27 UTC) Moonrise 8:25AMMoonset 9:31PM Illumination 14% Phase: Waxing Crescent; Moon at 4 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 Manalapan, FL
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location: 26.3, -77.3     debug

Area Discussion for - Miami-South Florida, FL
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Fxus62 kmfl 201213
area forecast discussion
national weather service miami fl
813 am edt Tue mar 20 2018

MVFR vsby may persist until 14z for kapf, and some low stratus may
cause restrictions at kpbi this morning. Otherwise,VFR conditions
generally prevail into Wednesday. Isolated to scattered showers
and perhaps a thunderstorm or two are possible late this afternoon
at kapf and this evening elsewhere. Expected coverage doesn't
warrant TS inclusion, but vcsh in forecast at this time. SW wind
will be quite gusty this afternoon, with gusts to near 30 kt

Prev discussion issued 403 am edt Tue mar 20 2018

today and tonight: unsettled 24 hours setting up across the state
as compact upper level low current traversing the oh valley moves
eastward into the northeastern us later this morning. Behind it,
strong upper level jet diving into the deep south will drive digging
trough that is forecast to move into the eastern gulf late this

Last night's activity has diminished across the state as the first
upper low has pulled out, but expect activity to re-energize along
a diffuse boundary across north florida later this morning. The
front is expected to push through the state and into south florida
towards sunset this evening.

Lingering dry air in the midlevels and lack of an organized
forcing mechanism to initiate convection should keep at least the
first half of the day dry despite the relatively unstable
atmosphere in place with dewpoints in the 60s and 70s and near
record highs across most of the area.

Best chances for convection will be late this afternoon into this
evening as the boundary moves into the far northwest lake region.

This activity will be developing with a 35-50kt low level
southwesterly jet in place along with lingering midlevel dry air.

The primary severe weather threat is expected to be strong to
severe straight line wind gusts. However, large hail and rotating
storms can't be ruled out especially if the boundary arrives
slightly earlier and can better utilize peak daytime heating. The
outlook from SPC places area north of i-75 in a marginal risk for
severe thunderstorms, with a slight risk around the lake
okeechobee region.

As the front moves further into south florida during the late
evening and overnight hours, the shortwave trough will be departing
the region, bringing increasing subsidence and tending to suppress
deep moist convection with time. The weakening surface convergence
along the front may be just enough for an isolated gusty shower to
persist as the front reaches south of i-75 later tonight, but
coverage is expected to be low.

Wednesday and beyond: strong trough evolving into an upper level low
across the oh valley and mid atlantic will shift the evolving low
pressure system up the east coast on Wednesday. This will crank the
frontal boundary through south florida, with even most most
conservative model clearing out the region by daybreak Wednesday.

Another cool and dry airmass will overspread the region behind the
front for the remainder of the week into the upcoming weekend.

Daytime highs Wednesday through Friday will be in the low to mid
70s, climbing back to a more seasonable upper 70s and low 80s for
the weekend as flow veers easterly. A return of chilly overnight
lows is expected with low ranging from the mid 40s to mid 50s
Wednesday and Thursday night, with a gradual warmup into the

Marine... Winds are expected to pick up to 15-20kts out of the
south-southwest over all the water later this morning ahead of an
approaching system. Expect showers and storms ahead of and along the
front from early afternoon through most of the overnight, with the
best coverage generally over the gulf waters and lake okeechobee.

Stronger storms necessitating special marine warnings can not be
ruled out.

Winds veer northwesterly Wednesday morning behind the front, with
speeds continuing to hover around 15-20kts into Thursday. Local
atlantic waters may see steady 20kts at times through this
timeframe. The increase in winds will drive an increase in seas,
coming up to 6-7ft over the local gulf waters by daybreak Wednesday.

Atlantic waters will see seas coming up to 6-8ft in the gulf stream
on Thursday.

Conditions steadily improve Friday into the weekend as high pressure
moves over the region.

Beach forecast... Breezy south-southwesterly winds will lead to a
moderate risk of rip currents at the gulf beaches today, with the
potential for the risk to become high Wednesday and Thursday with
breezy northwesterly winds behind a front. North, and eventually
northeasterly flow, in combination with a 1-3 foot swell may lead to
an enhanced risk of rip currents along the atlantic beaches into
this weekend.

Fire weather... Gusty south-southwesterly flow ahead of a frontal
boundary will lead to excellent dispersions across much of south
florida this afternoon. Showers and storms are expected across the
area this afternoon and overnight with the front, with wetting rains
expected for most of the region.

Another very dry air mass will move into the region behind the cold
front Wednesday. Minimum rh Wednesday afternoon will be in the 30-35
range over parts of the interior, and in the 20-30 percent range
over most of the region Thursday and Friday afternoons, before
increasing to 35 percent or higher this weekend. At this time, winds
above 15 mph are not expected to coincide with the low rh periods,
so headlines are not required.


near record highs are possible along the east coast today.

City forecast record high (year)
miami 89 89 (2008)
ft. Lauderdale 88 91 (1965)
w. Palm beach 91 92 (1965)
naples 83 90 (1977)

Preliminary point temps pops
West palm beach 91 61 79 52 10 30 0 0
fort lauderdale 88 66 81 55 10 30 0 0
miami 89 68 81 54 10 30 0 0
naples 83 66 73 53 50 40 0 0

Mfl watches warnings advisories
Fl... None.

Am... Small craft advisory from 5 pm this afternoon to 5 pm edt
Wednesday for amz650-651-670-671.

Gm... Small craft advisory from 8 pm this evening to 5 pm edt
Wednesday for gmz656-657-676.

Discussion... 88 alm
marine... 88 alm
aviation... 23 sk
beach forecast... 88 alm
fire weather... 88 alm
climate... 88 alm

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SPGF1 - Settlement Point, GBI 94 mi27 min SSW 18 G 20 77°F 1010.8 hPa (+1.3)

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Boca Raton, Boca Raton Airport, FL149 mi40 minSW 84.00 miFog/Mist75°F71°F89%1010.8 hPa

Wind History from BCT (wind in knots)
Last 24hrSW6SW8W8S12
1 day agoNW5NW6NW7W13NW10NW10NW12N6SE7SE5SE866S7--------------SW5SW3SW5
2 days agoCalm--S4S4SE10SE10SE11SE13SE12SE8SE8SE5S5S5--------------CalmCalmCalm

Tide / Current Tables for Pelican Harbour, Abaco Island, Bahamas
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Pelican Harbour
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Tue -- 04:57 AM EDT     0.62 feet Low Tide
Tue -- 07:11 AM EDT     Sunrise
Tue -- 09:23 AM EDT     Moonrise
Tue -- 11:00 AM EDT     3.47 feet High Tide
Tue -- 05:07 PM EDT     0.63 feet Low Tide
Tue -- 07:19 PM EDT     Sunset
Tue -- 10:29 PM EDT     Moonset
Tue -- 11:20 PM EDT     3.68 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Nassau, New Providence Island, Bahamas
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Tue -- 04:29 AM EDT     0.26 feet Low Tide
Tue -- 07:13 AM EDT     Sunrise
Tue -- 09:26 AM EDT     Moonrise
Tue -- 10:37 AM EDT     3.10 feet High Tide
Tue -- 04:38 PM EDT     0.28 feet Low Tide
Tue -- 07:20 PM EDT     Sunset
Tue -- 10:30 PM EDT     Moonset
Tue -- 11:01 PM EDT     3.47 feet High 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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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.
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Other links: Northern Pacific     Contential US     Full GOES-East
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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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.