Thursday, May24, 2018 L-36.com


Marine Weather and Tides
Naranjito, PR

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 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.

Sunrise 5:47AMSunset 6:55PM Thursday May 24, 2018 9:59 AM AST (13:59 UTC) Moonrise 2:45PMMoonset 2:27AM Illumination 73% Phase: Waxing Gibbous; Moon at 10 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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AMZ712 Coastal Waters Of Northern Puerto Rico Out 10 Nm- 411 Am Ast Thu May 24 2018
.small craft should exercise caution...
Today..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Scattered showers.
Tonight..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 8 seconds. Scattered showers.
Friday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Scattered showers.
Friday night..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Scattered showers.
Saturday..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Scattered showers.
Sunday..East winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Scattered showers. Isolated Thunderstorms.
Monday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated Thunderstorms. Scattered showers.
AMZ700 411 Am Ast Thu May 24 2018
Synopsis for puerto rico and the uS. Virgin islands waters... The azores-bermudas high pressure will yield a moderate to fresh easterly wind flow across the local waters. Choppy seas will therefore continue through at least this afternoon. Under this weather pattern, the easterly trade winds will bring occasional patches of low level clouds and showers each day through the rest of the week. A tropical wave is forecast to cross the lesser islands by Saturday.

7 Day Forecast for Marine Location Near Naranjito, PR
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location: 18.31, -66.18     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 240849
afdsju
area forecast discussion
national weather service san juan pr
449 am ast Thu may 24 2018

Synopsis A short wave trough aloft is forecast to swing north of the
islands as a tutt low moves northeastward from the leeward
islands the next few days. The islands will be wedge by a ridge
to the northwest and a tutt low to the northeast through the
upcoming weekend. Tropical wave will approach the lesser islands
between Saturday night into Sunday morning.

Short term Today through Saturday...

not much change to the local weather pattern is expected for today
across the forecast area. Partly to variably cloudy skies with brief
passing shower activity are expected across eastern portions of
puerto rico and the usvi during the morning hours. During the
afternoon, heavy showers and possibly a few isolated thunderstorms
are expected to develop across the northwest quadrant of puerto
rico. Additional shower development is expected across the san juan
metro area downwind from EL yunque as well as some possible
streamers developing downwind from the usvi. The rainfall expected
across the northwest quadrant of puerto rico as well as across the
san juan metro area could result in ponding of water on roadways and
in poor drainage areas as well as some localized urban and small
stream flooding.

Model guidance continues to indicate an increase in low-level
moisture via a southeasterly wind flow for Friday and Saturday.

Therefore, continue to expect passing trade wind showers affecting
eastern portions of puerto rico and usvi during the morning hours
followed by heavy showers developing across the northwest quadrant
of puerto rico as well as across portions of the san juan metro area
downwind from EL yunque during the afternoon hours. Given the recent
rainfall activity, the potential exists for urban and small stream
flooding where the heaviest rainfall occurs.

Long term Sunday through Friday...

an increase in low level moisture is expected by early next week
as a tropical wave combine with an upper level trough and plenty
of low level moisture at the surface. As a result, scattered to
numerous showers with isolated thunderstorms are expected to
affect the local area Sunday into Monday. Best activity is
expected to develop across the cordillera central of puerto rico.

A drier air mass is expected to encompass the region Tuesday and
Wednesday, followed by another tropical wave which is forecast by
sju-gfs model to reach the northeast caribbean by Thursday next
week.

Aviation MainlyVFR conds expected across all terminals through
24 16z. A few brief passing shra could affect the usvi and tjsj
terminals during the morning hours. +shra and isolated ts
development expected across western and northwestern sections of pr
after 24 16z. Therefore, MVFR conditions are expected across tjbq
and tjmz terminals. Vcsh possible across tjsj between 24 16-20z.

Winds will be from the e-se between 15-20 kts with sea breeze
variations and occasional gusts through 24 22z. Winds expected to
diminish below 10kts after 24 23z.

Marine Seas between 4 to 6 feet and winds up to 20 knots are
expected across the local waters. Small craft operators are urge
to exercise caution across most waters.

Preliminary point temps pops
Sju 87 77 87 77 40 40 40 30
stt 87 77 87 77 30 30 30 30

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Gl
long term... .Fc


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SJNP4 - 9755371 - San Juan, PR 11 mi47 min 81°F 81°F1019.2 hPa
41053 - San Juan, PR 12 mi59 min E 12 G 16 81°F 80°F4 ft1018.3 hPa (+1.0)
YABP4 - 9754228 - Yabucoa Harbor, PR 25 mi41 min 84°F
JOXP4 - Jobos Bay Reserve, Puerto Rico 25 mi74 min ENE 5.1 83°F 1019 hPa73°F
AROP4 - 9757809 - Arecibo, PR 30 mi41 min E 8 G 14
42085 - Southeast of Ponce, PR 36 mi59 min ENE 14 G 18 84°F 82°F4 ft1017.8 hPa (+1.2)
CLBP4 - 9752235 - Culebra, PR 47 mi41 min 85°F 82°F1019 hPa

Wind History for San Juan, PR
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR13 mi63 minE 1010.00 miPartly Cloudy82°F73°F77%1019.1 hPa

Wind History from JSJ (wind in knots)
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Last 24hrNE14CalmE18
G23
NE18E18E21E16
G25
E19E17E12E10E10E7E6E6E6E4E5E5E4CalmE4E5E10
1 day agoE15E14
G20
E18E15E15E14E17
G24
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G21
E12SE8SE6E6E11SE7E6SE5SE3E5E5SE3SE4E8E14
G18
2 days agoE13E17NE16E15E15NE18E18
G22
E17E16E12E11E10SE4SE4CalmCalmSE7E3S4SE3E4SE3SE5E11

Tide / Current Tables for San Juan, La Puntilla, San Juan Bay, Puerto Rico
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San Juan
Click for Map
Thu -- 02:27 AM AST     Moonset
Thu -- 04:41 AM AST     1.32 feet High Tide
Thu -- 05:48 AM AST     Sunrise
Thu -- 11:09 AM AST     0.03 feet Low Tide
Thu -- 02:45 PM AST     Moonrise
Thu -- 05:36 PM AST     1.29 feet High Tide
Thu -- 06:54 PM AST     Sunset
Thu -- 11:39 PM AST     0.27 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.60.91.11.31.31.210.70.40.100.10.30.60.91.11.31.31.20.90.70.40.3

Tide / Current Tables for San Juan, Puerto Rico
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San Juan
Click for Map
Thu -- 02:27 AM AST     Moonset
Thu -- 04:42 AM AST     1.33 feet High Tide
Thu -- 05:48 AM AST     Sunrise
Thu -- 11:10 AM AST     0.04 feet Low Tide
Thu -- 02:45 PM AST     Moonrise
Thu -- 05:36 PM AST     1.31 feet High Tide
Thu -- 06:54 PM AST     Sunset
Thu -- 11:40 PM AST     0.28 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.60.91.11.31.31.210.70.40.100.10.30.60.91.11.31.31.210.70.50.3

Weather Map and Satellite Images
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wmap_A
GOES Local Image of Puerto Rico    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 (9,2,3,4)
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Ground Weather Radar Station Puerto Rico,Virgin Islands
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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.