Saturday, December7, 2019
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Marine Weather and Tides
El Negro, 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 6:41AMSunset 5:48PM Saturday December 7, 2019 5:26 PM AST (21:26 UTC) Moonrise 2:47PMMoonset 2:34AM Illumination 83% Phase: Waxing Gibbous; Moon at 11 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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AMZ732 Caribbean Waters Of Puerto Rico From 10 Nm To 17n- 352 Pm Ast Sat Dec 7 2019
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 8 seconds. Isolated showers.
Sunday night..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Isolated showers.
Monday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated Thunderstorms in the morning. Scattered showers through the day.
Monday night..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Tuesday..East winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 7 seconds. Isolated showers.
Wednesday..East winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 8 seconds. North swell around 4 feet. Isolated showers.
Thursday..East winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 10 seconds. North swell around 4 feet. Isolated showers.
AMZ700 352 Pm Ast Sat Dec 7 2019
Synopsis for puerto rico and the uS. Virgin islands waters... Moderate easterly winds will persist through this weekend, creating 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.


7 Day Forecast for Marine Location Near El Negro, PR
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location: 18, -65.8     debug


Area Discussion for - San Juan, PR
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FXCA62 TJSJ 071755 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 155 PM AST Sat Dec 7 2019

SYNOPSIS. Patches of low level moisture embedded on the trade winds will cause passing showers across the USVI and eastern sections of PR for the next few days. This limited low level moisture, the sea breeze convergence and daytime heating will aid in the development of afternoon showers over western PR and streamers off the USVI. Moderate to fresh trade winds will increase seas across the Atlantic waters and Anegada Passage by early next week.

SHORT TERM. Today through Monday .

Mostly sunny to partly cloudy skies prevailed through the day across the region. By noon, streamers with light to moderate showers developed off the U.S. Virgin Islands and as well over Culebra and Vieques. Some of this activity reached portions of eastern Puerto Rico. Rainfall amounts were in general less than a quarter of an inch. For the rest of the afternoon hours, diurnally induced showers are expected to develop over western Puerto Rico. A surge in low level moisture embedded in the trade winds that aided shower activity today, is expected to exit the region tonight and drier air is forecast to fill from the east and prevail through the rest of the short term period. Mid level ridge will continue to gradually erode and an upper level trough over the Atlantic waters on Monday will cause a more zonal flow aloft, however, a surge in low level moisture associated to an induced surface trough is expected to move briefly from the northeast between late Sunday into early Monday morning. Increasing passing showers across the regional waters and over the USVI and the northeast sections of PR.

LONG TERM. Tuesday through Sunday . (from previous discussion)

Fairly uneventful weather conditions are expected to prevail in the long term 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, sct SHRA possible across portions of western PR through 07/22z, with brief MVFR conditions possible across TJMZ. Winds will continue from the E-ENE up to 15 kts with sea breeze variations Thor 07/22z, becoming light and variable overnight.

MARINE. Seas between 3-5 feet and east winds between 10-15 knots will prevail through the rest of the weekend. Choppy seas are expected on Monday and through next week due to wind driven seas. Small craft advisory conditions are forecast by midweek across the northern and eastern waters of the islands. A moderate risk of rip currents continues for most of the east, north and southern beaches of the islands.

PRELIMINARY POINT TEMPS/POPS. SJU 76 86 76 85 / 20 30 40 40 STT 75 86 75 85 / 20 30 50 50

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

SHORT TERM . GL LONG TERM . DS PUBLIC DESK . RVT


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
YABP4 - 9754228 - Yabucoa Harbor, PR 4 mi56 min 84°F 75°F
ESPP4 - 9752695 - Esperanza, PR 19 mi56 min ESE 6 G 9.9 86°F 84°F1014.9 hPa
JOXP4 - Jobos Bay Reserve, Puerto Rico 23 mi101 min E 9.9 85°F 1015 hPa73°F
41056 25 mi86 min E 9.7 G 12 82°F 84°F3 ft1013.4 hPa (-1.3)
CLBP4 - 9752235 - Culebra, PR 34 mi56 min 85°F 85°F1014.8 hPa
41053 - San Juan, PR 36 mi86 min E 12 G 16 83°F 84°F3 ft1013.3 hPa (-1.5)
SJNP4 - 9755371 - San Juan, PR 36 mi56 min E 12 G 15 83°F 85°F1014.6 hPa
42085 - Southeast of Ponce, PR 40 mi86 min E 16 G 19 83°F 84°F4 ft1012.8 hPa (-1.6)

Wind History for Yabucoa Harbor, PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR32 mi30 minE 910.00 miPartly Cloudy84°F75°F74%1014.6 hPa

Link to 5 minute data for TJSJ

Wind History from JSJ (wind in knots)
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Last 24hrE10E6E4SE4SE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE7E10E12E11NE13E13E13E9
1 day agoE7E5E4CalmCalmCalmCalmCalmCalmCalmCalmCalmSE3CalmSE4SE5E8E9E11E13E13E14E14E14
2 days agoSE4S5CalmCalmCalmCalmSE3SE3CalmCalmCalmCalmCalmCalmCalmCalmE33CalmE9SE7
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S8S76

Tide / Current Tables for Puerto Maunabo, Puerto Rico
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Puerto Maunabo
Click for Map
Sat -- 02:34 AM AST     Moonset
Sat -- 06:24 AM AST     0.52 feet High Tide
Sat -- 06:42 AM AST     Sunrise
Sat -- 09:26 AM AST     0.41 feet Low Tide
Sat -- 02:47 PM AST     Moonrise
Sat -- 04:57 PM AST     0.57 feet High Tide
Sat -- 05:47 PM AST     Sunset
Sat -- 10:18 PM AST     0.08 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.30.30.40.50.50.50.50.50.40.40.40.40.50.50.50.60.60.50.40.30.10.10.1

Tide / Current Tables for Vieques Passage, Puerto Rico Current
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Vieques Passage
Click for Map
Sat -- 12:44 AM AST     -0.52 knots Max Ebb
Sat -- 02:33 AM AST     Moonset
Sat -- 03:47 AM AST     0.00 knots Slack
Sat -- 06:41 AM AST     Sunrise
Sat -- 07:16 AM AST     0.67 knots Max Flood
Sat -- 10:40 AM AST     -0.00 knots Slack
Sat -- 01:56 PM AST     -0.62 knots Max Ebb
Sat -- 02:46 PM AST     Moonrise
Sat -- 05:36 PM AST     0.00 knots Slack
Sat -- 05:46 PM AST     Sunset
Sat -- 07:56 PM AST     0.29 knots Max Flood
Sat -- 10:20 PM AST     -0.00 knots Slack
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    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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (16,3,4,5)
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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.