Sunday, March26, 2017 L-36.com


Marine Weather and Tides
Ponce, PR

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 6:23AMSunset 6:39PM Sunday March 26, 2017 7:14 AM AST (11:14 UTC) Moonrise 5:20AMMoonset 5:27PM Illumination 1% Phase: Waning Crescent; Moon at 28 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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AMZ735 Coastal Waters Of Southern Puerto Rico Out 10 Nm- 405 Am Ast Sun Mar 26 2017
Today..South winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Southeast swell around 4 feet. Scattered showers.
Tonight..Southwest winds 5 to 10 knots veering north after midnight. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers.
Monday..East winds 5 to 10 knots veering south in the afternoon. Seas 1 to 3 feet. Dominant period 8 seconds. Isolated showers.
Monday night..North winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
Tuesday..Northeast winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
Wednesday..Northeast winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Isolated showers.
Thursday..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Isolated showers.
AMZ700 405 Am Ast Sun Mar 26 2017
Synopsis for puerto rico and the uS. Virgin islands waters... Light south to southwest winds expected today as a surface low north of hispaniola moves north. A large northerly swell is affecting the local atlantic waters and passages, and will continue through this evening causing hazardous seas. Another northerly swell generated by the surface low is forecast to reach the atlantic waters and passages by the middle of next week.

7 Day Forecast for Marine Location Near Ponce, PR
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location: 17.97, -66.62     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 261045
afdsju
area forecast discussion... Corrected
national weather service san juan pr
645 am ast Sun mar 26 2017

Synopsis A surface low over the atlantic waters between
hispaniola and pr will continue to move north northeast of the
forecast area for the next few days. A surface high will build
across the western atlantic and into the local area by midweek.

Drier air at mid levels is expected to fill in today and persist
through the end of the week. Light southerly winds will continue
until Monday, becoming northerly and increasing through Thursday.

Short term Today through Tuesday... A line of showers and
strong thunderstorms persisted across the atlantic waters
northwest of puerto rico overnight. This activity will continue to
move to the northeast approaching the northwest tip of puerto
rico during the morning hours. Showers were also observed over
south central sections of puerto rico as well as across vieques,
culebra and eastern puerto rico overnight. A few light shower
affected the u.S. Virgin islands.

A developing surface low pressure system to the north of hispaniola
this morning will continue to bring a moist and unstable southerly
wind flow across puerto rico and the u.S. Virgin islands today. Less
cloud cover is expected today across the region and therefore
diurnal heating in combination with sea breeze convergence and other
local effects will induce the development of showers and
thunderstorms along and north of the cordillera central,
including the san juan metro area and especially during the
afternoon and early evening hours. Urban and small stream flooding
are possible over northern puerto rico. As the low moves further
northeastward and strengthens over the atlantic waters, moisture
will begin to decrease slowly across the local islands by Tuesday
and thereafter. However, a few thunderstorms may still be possible
during the next several days due to lingering moisture in
combination with local effects--especially in the interior
sections of puerto rico. Due to the expected southerly wind flow,
warmer than normal temperatures are expected across the northern
coastal municipalities of puerto rico during the next few days.

Long term Wednesday through Sunday... A surface low moves into
the north central atlantic on Wednesday and the ridge across the
western atlantic builds north of the islands through the end of
the week. This will result in a cooler northerly wind flow over
the islands and fair weather conditions through the middle of the
week. East to southeast winds return from Friday through Sunday
with moisture increasing from the southeast... Apparently
associated with remnants of the surface low/frontal boundary.

Aviation Brief periods of MVFR conditions are expected across
the leeward islands and usvi TAF sites this morning. Shra/tsra
are expected to develop along and north of cordillera central this
afternoon inducing periods of MVFR or even ifr conditions after
26/16z in and around tjmz, tjbq and tjsj. Latest tjsj sounding
indicated a south southwesterly wind flow at all levels, but very
strong aloft.

Marine Small craft advisories continue in effect today for the
atlantic waters and passages. Northerly swell will continue to
subside through this evening. High surf advisory condtions for
breaking waves of 10 feet or more will continue for the north
facing beaches of pr and a high risk of rip currents will continue
through at least the overnight hours across the northwest to
north coast of pr, culebra and st. Thomas. Beach goers should
avoid these areas and exercise caution if going to any other
beaches of the islands.

Preliminary point temps/pops
Sju 86 74 88 77 / 50 40 50 40
stt 82 75 84 75 / 50 50 50 40

Sju watches/warnings/advisories
Pr... High rip current risk through late tonight for culebra-mayaguez
and vicinity-north central-northeast-northwest-san juan and
vicinity-southeast-western interior.

High surf advisory until 6 pm ast this evening for mayaguez and
vicinity-north central-northeast-northwest-san juan and
vicinity-southeast-western interior.

High rip current risk until 6 am ast early this morning for
southwest-vieques.

High surf advisory until 6 am ast early this morning for culebra.

Vi... High rip current risk through this afternoon for st.Thomas... St.

John... And adjacent islands.

High surf advisory until 6 am ast early this morning for
st.Thomas... St. John... And adjacent islands.

Am... Small craft advisory until 8 pm ast this evening for
atlantic waters of puerto rico and usvi from 10 nm to 19.5n-
coastal waters of northwestern puerto rico out 10 nm-coastal
waters of northern puerto rico out 10 nm-mona passage
southward to 17n.

Small craft advisory until 2 pm ast this afternoon for anegada
passage southward to 17n-coastal waters of northern usvi and
culebra out 10 nm.

Short term... Jf
long term... .Ds
aviation... Jf
marine... Ds
correction... Ws


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
42085 - Southeast of Ponce, PR 9 mi44 min NE 3.9 G 5.8 78°F 1011.9 hPa
JOXP4 - Jobos Bay Reserve, Puerto Rico 21 mi89 min Calm 72°F 1013 hPa71°F
IMGP4 22 mi24 min N 4.1 G 6 74°F 1012.3 hPa
MGIP4 - 9759110 - Magueyes Islands, PR 23 mi44 min NNE 5.1 G 7 75°F 79°F1012.5 hPa
MGZP4 - 9759394 - Mayaguez, PR 33 mi44 min SE 2.9 G 7 71°F 81°F1012.5 hPa
AROP4 - 9757809 - Arecibo, PR 36 mi44 min SSW 12 G 15 74°F
YABP4 - 9754228 - Yabucoa Harbor, PR 42 mi44 min NNW 1 G 2.9
SJNP4 - 9755371 - San Juan, PR 43 mi44 min S 5.1 G 6 75°F 80°F1012.6 hPa
PTRP4 43 mi24 min ESE 2.9 G 4.1 71°F
41053 - San Juan, PR 44 mi44 min SSE 5.8 G 7.8 76°F 1012 hPa
41115 - Rincon, Puerto Rico (181) 45 mi51 min 80°F8 ft

Wind History for Penuelas (Punta Guayanilla), PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ponce, Mercedita Airport, PR4 mi2.4 hrsN 010.00 miMostly Cloudy75°F71°F89%1013.5 hPa

Wind History from JPS (wind in knots)
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Last 24hr----------------------------------NE5Calm--CalmCalm--Calm
1 day ago----------------------------------SW6Calm--E6E7--E10
2 days ago----------------------------------CalmCalm--CalmCalmCalm--

Tide / Current Tables for Playa de Ponce, Puerto Rico
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Playa de Ponce
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Sun -- 12:10 AM AST     0.07 feet Low Tide
Sun -- 05:20 AM AST     Moonrise
Sun -- 06:25 AM AST     Sunrise
Sun -- 07:51 AM AST     0.46 feet High Tide
Sun -- 03:31 PM AST     0.18 feet Low Tide
Sun -- 05:27 PM AST     Moonset
Sun -- 06:38 PM AST     Sunset
Sun -- 07:27 PM AST     0.24 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.10.10.20.30.30.40.50.50.40.40.40.30.20.20.20.20.20.20.20.20.20.20.2

Tide / Current Tables for Punta Guayanilla, Puerto Rico
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Punta Guayanilla
Click for Map
Sun -- 12:00 AM AST     0.09 feet Low Tide
Sun -- 05:20 AM AST     Moonrise
Sun -- 06:26 AM AST     Sunrise
Sun -- 09:02 AM AST     0.40 feet High Tide
Sun -- 04:55 PM AST     0.18 feet Low Tide
Sun -- 05:27 PM AST     Moonset
Sun -- 06:39 PM AST     Sunset
Sun -- 08:51 PM AST     0.22 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.10.10.10.20.20.30.30.40.40.40.40.30.30.20.20.20.20.20.20.20.20.20.2

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

GOES Local Image of Puerto Rico    EDIT
Geos

Wind Forecast for (7,2,3,4)
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Ground Weather Radar Station Puerto Rico,Virgin Islands
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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.