Saturday, December7, 2019
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Marine Weather and Tides
Santo Domingo, PR

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:44AMSunset 5:52PM Saturday December 7, 2019 4:33 AM AST (08:33 UTC) Moonrise 2:51PMMoonset 2:38AM Illumination 79% 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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AMZ735 Coastal Waters Of Southern Puerto Rico Out 10 Nm- 352 Am Ast Sat Dec 7 2019
Today..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
Tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
Sunday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
Sunday night..Northeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers through the night.
Monday..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Tuesday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Wednesday..Northeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
AMZ700 352 Am Ast Sat Dec 7 2019
Synopsis for puerto rico and the uS. Virgin islands waters... Easterly winds will persist through the weekend. This will create a light to moderate chop across portions of the local waters and passages. Higher seas are expected to move into the local waters starting late Sunday into Monday due to stronger than normal trade winds from a strong atlantic high pressure. Isolated showers will continue to be a threat across local waters, but with only a small chance for Thunderstorms.


7 Day Forecast for Marine Location Near Santo Domingo, PR
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location: 18.1, -66.75     debug


Area Discussion for - San Juan, PR
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FXCA62 TJSJ 070828 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 428 AM AST Sat Dec 7 2019

SYNOPSIS.

Fairly benign weather conditions are expected for the next week, with no major weather systems expected. However, showers will continue to move inland from local waters for the nighttime and morning hours, with more showers developing in the afternoon for western Puerto Rico. Faster than average trade winds for the next week will help to keep these showers moving along. These winds will also induce rough seas during the next workweek.

SHORT TERM. Today through Monday

The mid-level ridge will continue to dominate our local region through Sunday night and Monday. This weather pattern will generate an easterly wind flow as well as relatively stable weather conditions across the local forecast area. Although stable and dry conditions will prevail across the area, showers are still expected to develop due to sea breeze convergence and diurnal heating. Most of these showers will develop over the interior and western areas of Puerto Rico during the afternoons.

Satellite imagery and models are suggesting low level moisture advection across the local forecast area for the next few days. Most of the showers associated to these patches will occur over the eastern coastal sections of Puerto Rico and adjacent islands.

LONG TERM. Tuesday through Sunday

Fairly uneventful weather conditions are expected to prevail in the longterm forecast. Near average moisture will be with us, with precipitable water values mostly between 1.4 and 1.7 in. Also, trade winds stay fairly brisk as well, helping to keep showers moving along and reducing the amount of rainfall accumulations. No major fronts or tropical waves are expected at this time for the next week. Furthermore, upper-level dynamical forcing remains fairly uninspiring until possibly Friday . and fairly briefly even then.

Despite the generally average conditions in the long-term, there will still be plenty of opportunity for passing showers. Advective showers will develop in the nighttime and morning hours, threatening the east coast of Puerto Rico and the USVI, particularly Tuesday night through Friday when the highest moisture content will occur. Furthermore, the usual afternoon shower activity is possible, particularly for western Puerto Rico. However, for reasons mentioned in the last paragraph, these showers will likely have minimal impact. Very long range models suggest possibly a tropical wave clipping us to our south for next weekend. However, there is minimal confidence in that forecast this far out.

AVIATION.

Mainly VFR conditions are expected to prevail across all terminals for the next 24 hours. However, SHRA developing from 16z- 22z could cause tempo MVFR at TJMZ. Winds will continue from the east at 10 to 15 knots with higher gusts at times.

MARINE.

In the short-term, seas remain fairly calm with wave heights generally between 3-5 feet. However, with high pressure building in the central Atlantic, this will result in choppy seas heading into next week. Wave heights up to 6 feet are expected for Sunday, and increasing to 7 feet for much of the next workweek.

PRELIMINARY POINT TEMPS/POPS. SJU 87 76 86 76 / 30 30 30 40 STT 85 75 86 75 / 30 40 30 50

SJU WATCHES/WARNINGS/ADVISORIES. PR . None. VI . None. AM . None.

SHORT TERM . EM LONG TERM . mb PUBLIC DESK . 99


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGIP4 - 9759110 - Magueyes Islands, PR 18 mi52 min NE 2.9 G 6 74°F 82°F1016.3 hPa
42085 - Southeast of Ponce, PR 20 mi94 min ENE 9.7 G 12 81°F 84°F3 ft1014.4 hPa (-1.4)
MGZP4 - 9759394 - Mayaguez, PR 23 mi52 min 84°F1016.3 hPa
AROP4 - 9757809 - Arecibo, PR 26 mi46 min Calm G 2.9
JOXP4 - Jobos Bay Reserve, Puerto Rico 30 mi109 min N 2.9 76°F 1017 hPa70°F
PTRP4 32 mi29 min E 6 G 8 76°F
41115 - Rincon, Puerto Rico (181) 34 mi34 min 84°F3 ft
SJNP4 - 9755371 - San Juan, PR 42 mi46 min SW 1.9 G 2.9 78°F 84°F1016.1 hPa
41053 - San Juan, PR 43 mi94 min S 3.9 G 5.8 80°F 84°F3 ft1015 hPa (-1.1)
YABP4 - 9754228 - Yabucoa Harbor, PR 49 mi52 min 76°F 72°F

Wind History for Penuelas (Punta Guayanilla), PR
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Airport Reports
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Click EDIT to select an airport
Tide / Current Tables for Punta Guayanilla, Puerto Rico
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Playa de Ponce, Puerto Rico
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Playa de Ponce
Click for Map
Sat -- 02:37 AM AST     Moonset
Sat -- 06:41 AM AST     0.59 feet High Tide
Sat -- 06:44 AM AST     Sunrise
Sat -- 08:00 AM AST     0.46 feet Low Tide
Sat -- 02:50 PM AST     Moonrise
Sat -- 05:14 PM AST     0.65 feet High Tide
Sat -- 05:50 PM AST     Sunset
Sat -- 08:52 PM AST     0.10 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Weather Map
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wmap_A
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (3,6,7,8)
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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.