Tuesday, January23, 2018 L-36.com


Marine Weather and Tides
La Parguera comunidad, PR

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 7:00AMSunset 6:18PM Tuesday January 23, 2018 11:32 PM AST (03:32 UTC) Moonrise 11:26AMMoonset 11:59PM Illumination 49% Phase: First Quarter Moon; Moon at 7 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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AMZ745 Coastal Waters Of Southwestern Puerto Rico Out 10 Nm- 912 Pm Ast Tue Jan 23 2018
Rest of tonight..Northeast winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
Wednesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds.
Wednesday night..East winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds.
Thursday..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds.
Thursday night..Northeast winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
Friday..Northeast winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers.
Saturday..Northeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. North swell 4 to 6 feet. Scattered showers.
Sunday..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Northwest swell 4 to 5 feet. Scattered showers.
AMZ700 912 Pm Ast Tue Jan 23 2018
Synopsis for puerto rico and the uS. Virgin islands waters... Surface high pressure will continue to build across the west and central atlantic to maintain moderate to locally fresh trade winds and a slight chop across the local waters through Thursday. Increasing northeast winds and hazardous seas are forecast by Friday and into the weekend due to the arrival of another long dominant period northerly swell.

7 Day Forecast for Marine Location Near La Parguera comunidad, PR
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location: 17.97, -67.05     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 240112
afdsju
area forecast discussion
national weather service san juan pr
912 pm ast Tue jan 23 2018

Update Consistent with the forecast, numerous showers affected
western pr in the afternoon hours while the rest of the local
islands observed mainly fair weather. As the evening approached,
the showers over western pr moved away and trade wind showers
started to move in from the east, briefly affecting the usvi and a
few sectors in northern and eastern pr. The rainfall accumulations
with the afternoon showers were generally around a half an inch or
less as observed by rain gauges in the area. The brief showers in
the evening have left minimal amounts of rain.

These scattered but brief showers are expected to continue
overnight into Wednesday morning, leaving minimal accumulations
across the usvi and portions of northern and eastern pr. Moisture
has increased tonight as indicated by the 24 00z sounding, and
this moisture is expected to remain over the local area through
Wednesday, so isolated to scattered showers are expected on
Wednesday as well. Once this moisture combines with the local
effects, afternoon showers will affect western pr and portions of
the higher elevations across pr.

Aviation Vfr conds expected through the local terminals with
vcsh overnight for the usvi terminals as well as tjsj. Overnight
winds will be from the east at about 10kt for most of the local
terminals but tjps and tjmz may have lighter winds. After 24 14z,
vcsh seems very probable for most of the local terminals and winds
will increase to 10-15kt from the east with sea breeze
variations.

Marine Small craft should exercise caution as seas will be up
to 6 feet. There is a moderate risk of rip currents tonight across
many of the local beaches with the exception of saint john. Saint
thomas only has a moderate risk across the northwest beaches,
while saint croix has a moderate risk basically across the entire
island. Local seas will remain choppy and up to 6 feet for the
next several days. However, a north to northeasterly swell will
invade the local waters late on Friday, which will likely cause a
significant increase in wave heights and cause rather hazardous
seas. The marine guidance is being bullish with the wave height
amounts but we capped the wave height forecast because there is
still some uncertainty. Having said that, as of right now, it
looks like the local seas and surf zones will be hazardous
starting this Friday and through the weekend, stay tuned.

Prev discussion issued 538 pm ast Tue jan 23 2018
short term... Today through Friday... A surge in low level moisture
resulted today in afternoon shower development over the western
interior sections of puerto rico. As well as a few showers
developing off streamers across the islands and the eastern
interior mountains. However, no significant rainfall accumulations
were observed. Although the upper ridge will promote the trade
wind cap and drier air during the next few days, enough low level
moisture will continue to aid in the development of diurnally
induced afternoon showers over the western portions of pr and
streamers across the usvi and the eastern mountains of pr.

Long term... Friday through Wednesday of next week. The upper level
high pressure ridge will hold across the region through Friday. However
expect the prevailing east to northeast winds to continue to transport
sufficient shallow moisture across the region to support passing
late evening and early morning showers, followed by the development
of isolated to scattered afternoon convection. Saturday through Sunday,
a polar trough is forecast to amplify and spread eastward across the
west and central atlantic causing a slight erosion of the upper level
ridge. This will provide better support for afternoon convection across
portions of the islands. By Monday through Wednesday, the mid to upper
level ridge will reestablish over the region and again limit shower
development.

In the low levels, the a cold front is forecast to move across the
west and central atlantic and stall well north of the local area
by the weekend. However, model guidance suggests a gradual increase
in the trade winds by late Friday and into the weekend with conditions
more favorable for moisture convergence across the islands. As a result,
cooler temperatures but more frequent shower activity is expected due
to the increasing northeast winds and frontal boundary moisture which
will sinks southwards and be transported across the region from time
to time. Gradually improving weather conditions are forecast Monday
through Wednesday with a return of more typical passing trade wind
showers and isolated to scattered afternoon showers mainly over the
west and interior sections of puerto rico.

Aviation... A patch of clouds and showers will bring periods of sct-
bkn ceiling across tjsj tist tisx through 23 23z. Tempo for
tjmz tjsj tist tncm were included for shra and bkn ceilings at fl020-
fl030 btwn 23 18z-20z. Elsewhere vcsh expected. Thereafter, passing
shra will begin to affect the coastal tafs jsj ist isx ncm kpk.

Ene winds at 10-15 kts with higher gusts up to 25 kt til 23 22z,
bcmg calm to light and variable overnight.

Marine... Small crafts should continue to exercise caution across
the atlantic waters and passages due to seas up to 6 feet.

Elsewhere seas will range between 3-5 feet. East winds will
continue between 5-15 tonight into Wednesday. Marine conditions
will quickly deteriorate during the weekend as a long period
northerly swell and wind driven seas will result in hazardous
confused seas. Small craft advisories will be required across most
of the regional waters. Also, this will result in large breaking
waves and rough surf conditions with life threatening rip
currents across all local islands.

Preliminary point temps pops
Sju 75 84 74 83 30 30 10 20
stt 75 84 74 85 50 50 20 20

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Ja
long term... .99


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
42085 - Southeast of Ponce, PR 29 mi93 min NNE 12 G 14 81°F 81°F1015.4 hPa (+1.5)
AROP4 - 9757809 - Arecibo, PR 40 mi45 min SE 2.9 G 2.9
MISP4 - 9759938 - Mona Island, PR 48 mi45 min 75°F 81°F1016.6 hPa

Wind History for Magueyes Island, PR
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Airport Reports
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Tide / Current Tables for Magueyes Island, Caribbean Sea, Puerto Rico
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Magueyes Island
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Tue -- 12:25 AM AST     0.11 feet Low Tide
Tue -- 07:02 AM AST     Sunrise
Tue -- 10:31 AM AST     0.37 feet High Tide
Tue -- 11:26 AM AST     Moonrise
Tue -- 06:17 PM AST     Sunset
Tue -- 09:58 PM AST     0.11 feet Low Tide
Tue -- 11:58 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.10.10.10.20.20.20.30.30.40.40.40.40.30.30.30.20.20.20.10.10.10.10.1

Tide / Current Tables for Guanica, Puerto Rico
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Guanica
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Tue -- 12:43 AM AST     0.11 feet Low Tide
Tue -- 07:01 AM AST     Sunrise
Tue -- 09:09 AM AST     0.37 feet High Tide
Tue -- 11:25 AM AST     Moonrise
Tue -- 06:17 PM AST     Sunset
Tue -- 10:16 PM AST     0.11 feet Low Tide
Tue -- 11:58 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.10.10.10.20.20.30.30.40.40.40.40.30.30.30.20.20.20.20.10.10.10.10.1

Weather Map and Satellite Images
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Weather Map
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IR Satellite Image from GEOS
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GOES Local Image of Puerto Rico    EDIT
Geos

Wind Forecast for (22,6,7,8)
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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.