Sunday, April22, 2018 L-36.com


Marine Weather and Tides
Tallaboa, PR

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 6:04AMSunset 6:47PM Sunday April 22, 2018 6:04 PM AST (22:04 UTC) Moonrise 12:04PMMoonset 12:29AM Illumination 51% 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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AMZ735 Coastal Waters Of Southern Puerto Rico Out 10 Nm- 426 Pm Ast Sun Apr 22 2018
.small craft should exercise caution...
Tonight..East winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
Monday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers through the day.
Monday night..East winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers.
Tuesday..East winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
Tuesday night..East winds 15 to 20 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
Wednesday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 8 seconds. Isolated showers.
Thursday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
Friday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
AMZ700 426 Pm Ast Sun Apr 22 2018
Synopsis for puerto rico and the uS. Virgin islands waters... Surface high pressure across the west and northeast atlantic will continue to produce a moderate to locally fresh wind flow across the regional waters through early this week. Shower and Thunderstorms are expected to develop across the regional waters as an upper level trough moves over the islands from the west interacting with plenty of tropical moisture Monday and Tuesday.

7 Day Forecast for Marine Location Near Tallaboa, PR
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location: 17.98, -66.76     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 222101
afdsju
area forecast discussion
national weather service san juan pr
501 pm ast Sun apr 22 2018

Synopsis
Locally induce showers will continue developing downwind from the
virgin isles and EL yunque as well as over the municipalities of
western puerto rico through this evening. A short wave trough is
forecast to swing by the islands from the west, and tropical
moisture is forecast to reach the islands from the east Monday and
Tuesday. Organize convection can be expected along and to the
west of the cordillera central and near the san juan metro area
especially on Monday afternoon.

Short term This evening through Tuesday...

locally induce showers developed downwind from the virgin isles
into the local waters, but no significant rainfall activity was
detected over land. Sky conditions prevailed mostly sunny to
partly cloudy throughout the day. On the other hand, the terminal
doppler detected shower activity over the municipalities of
eastern and western puerto rico, with the strongest activity over
the west. This activity is expected to last until sunset.

Under a northeasterly wind flow some passing showers can be
expected at times across the u.S. Virgin islands and the northern
and eastern sections of puerto rico overnight. Model guidance
continues to show an upper short wave trough moving from the west
Monday and Tuesday. Environmental conditions look favorable for
the formation of organize convection across the islands,
especially on Monday afternoon, as the upper level feature is
expected to interact with plenty of tropical moisture. Due to
already saturated soils, any prolong period of rainfall could
trigger flooding and mudslides especially along and to the west of
the cordillera central.

For Tuesday, the upper trough will be exiting the region, which
should have less impact in the local instability, but the virgin
islands and local waters could observe a better chance of showers
and thunderstorms especially early Tuesday morning. Then, the
remnants of the tropical moisture combined with diurnal and local
effects could result in another round of showers across the
western sections of puerto rico during the afternoon.

Long term Previous discussion...

upper level ridge will build across the northeast caribbean
through this period. However, for mid week an increase in low
level moisture is forecast by computer models. As a result, better
chances for shower and thunderstorm development can be expected
Wednesday and Thursday. For the rest of the period, seasonable
weather conditions are expected.

Aviation
Vfr conds durg prd. Vcsh for tjsj tjbq tist tisx with
shra isold tsra psbl in the vicinity of tjmz tjps with possible
tempo MVFR at tjmz til 22 22z. Isold shra en route btw islands and
ovr the coastal waters durg prd. Sfc winds will be mainly from the e
to ene at about 15-20 kt with occasional gusts... Bcmg 10 kts or less
aft 22 23z.

Marine
Mariners should exercise caution across the atlantic waters and
caribbean passages due to seas up to 6feet and winds of 15 to 20
knots. Across the protected waters, mariners can expect seas at
less than 5 feet. A slight increase in winds and seas is expected
across the offshore atlantic overnight through Monday due to a
surface high pressure north of the region and the arrival of a
northerly swell.

Preliminary point temps pops
Sju 75 86 75 85 60 60 60 40
stt 76 86 75 86 40 40 40 20

Sju watches warnings advisories
Pr... None.

Vi... High rip current risk until 6 pm ast this evening for st croix.

Am... None.

Short term... Cam
long term... .Previous discussion
aviation... Ram


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGIP4 - 9759110 - Magueyes Islands, PR 15 mi47 min SE 1.9 G 8 82°F 82°F1014.4 hPa
JOXP4 - Jobos Bay Reserve, Puerto Rico 29 mi80 min E 12 82°F 1015 hPa71°F
AROP4 - 9757809 - Arecibo, PR 35 mi47 min ENE 8.9 G 17
PTRP4 37 mi35 min NE 9.9 G 16 80°F
41115 - Rincon, Puerto Rico (181) 39 mi35 min 81°F3 ft
SJNP4 - 9755371 - San Juan, PR 48 mi53 min 80°F 81°F1015.4 hPa
YABP4 - 9754228 - Yabucoa Harbor, PR 49 mi47 min 83°F

Wind History for Penuelas (Punta Guayanilla), PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from JPS (wind in knots)
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Last 24hr----------------------------------------------SE7
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Tide / Current Tables for Punta Guayanilla, Puerto Rico
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Punta Guayanilla
Click for Map
Sun -- 12:28 AM AST     Moonset
Sun -- 04:51 AM AST     0.61 feet High Tide
Sun -- 06:05 AM AST     Sunrise
Sun -- 12:04 PM AST     Moonrise
Sun -- 03:37 PM AST     -0.12 feet Low Tide
Sun -- 05:46 PM AST     First Quarter
Sun -- 06:45 PM AST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.40.50.60.60.60.60.50.40.30.20.10-0-0.1-0.1-0.1-0.1-0.1-0-000.10.2

Tide / Current Tables for Guanica, Puerto Rico
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Guanica
Click for Map
Sun -- 12:29 AM AST     Moonset
Sun -- 03:02 AM AST     0.58 feet High Tide
Sun -- 06:06 AM AST     Sunrise
Sun -- 12:04 PM AST     Moonrise
Sun -- 04:09 PM AST     -0.19 feet Low Tide
Sun -- 05:46 PM AST     First Quarter
Sun -- 06:46 PM AST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.50.60.60.60.50.50.40.40.30.20.1-0-0.1-0.1-0.2-0.2-0.2-0.1-0.100.10.20.3

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 (18,4,5,8)
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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.