Tuesday, December10, 2019
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Marine Weather and Tides
Playita Cortada, 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 6:45AMSunset 5:52PM Tuesday December 10, 2019 7:55 PM AST (23:55 UTC) Moonrise 4:48PMMoonset 5:09AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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- 444 Pm Ast Tue Dec 10 2019
.small craft should exercise caution...
Tonight..Northeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Wednesday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Scattered showers.
Wednesday night..Northeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Thursday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Scattered showers.
Thursday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Scattered showers.
Friday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Isolated showers.
Saturday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Isolated showers.
Sunday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Isolated showers.
AMZ700 444 Pm Ast Tue Dec 10 2019
Synopsis for puerto rico and the uS. Virgin islands waters... Moderate to fresh easterly winds continue across the local waters, with the stronger than normal trade winds caused by a strong ridge of high pressure anchored over the atlantic. These winds will continue to create choppy and hazardous seas, with the increasing wave heights forecast to persist through the week. Isolated to scattered passing showers can also be expected across the regional waters for the next several days as well.


7 Day Forecast for Marine Location Near Playita Cortada, PR
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location: 17.98, -66.45     debug


Area Discussion for - San Juan, PR
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FXCA62 TJSJ 101741 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 141 PM AST Tue Dec 10 2019

SYNOPSIS. A strong surface high pressure across the Atlantic will continue to produce brisk easterly trade winds as well as periods of passing showers during the next several days. More frequent showers are possible on Thursday and Friday as deeper moisture is expected and a mid-level trough amplifies just east of the area.

SHORT TERM. Rest of today through Thursday .

The overall weather pattern is expected to be a dominated by a strong surface high pressure over the Atlantic, which will continue to produce brisk easterly trade winds across the area. This will drive patches of low-level moisture into the region, resulting in passing showers moving across the area from time to time. More frequent showers are possible on Thursday as deeper moisture moves over the area and a mid-level trough amplifies just east of the area, inducing a low-level trough. This low-level trough is expected to move over the area and enhance somewhat the shower activity. The showers that affect the area throughout the period are not expected to result in flooding as the activity will be fast-moving and scattered in nature. Ponding of water on roadways and in low-lying areas is expected to be the main hazard.

LONG TERM. Friday through Wednesday (From Previous Discussion) .

Coming off what appears will be a wet Thursday, Friday will still provide scattered showers across the region. These showers will not be due to any organized weather system, but rather just a decent batch of moisture being advected in by the trade winds. The wettest period for Friday appears to be in the early morning hours, and trending drier for the rest of the day. The usual afternoon shower activity is likely in western Puerto Rico, though atmospheric conditions do not look favorable for thunderstorms at this point. A high chance for showers also exists for the east coast of Puerto Rico. Low level wind flow is still forecast to be fairly strong, so these showers will likely be moving fairly fast.

Conditions do not change much heading into the weekend. Though the chance for showers remains, slightly less moisture is forecast to move in, so a drier few days are expected. In fact, this drier trend continues into the next workweek. Forecast models still hint at the chance for some Saharan dust to move in by the middle of next week, though dust concentrations look unimpressive at this point.

AVIATION. VFR conds are expected through the forecast period. However, passing SHRA may produce brief MVFR conds at TIST, TISX and TJSJ at times, but VFR conds should prevail most of the time. Some mountain obscuration are also possible in the interior portions of Puerto Rico and near El Yunque. ENE winds of 15-25 kts below FL100. Wind gusts of 30 kts are possible with SHRA as they pass by.

MARINE. Moderate to fresh easterly trade winds between 15 and 20 kts will continue to result hazardous seas across the regional waters with wave heights between 7 and 8 feet expected through at least the end of the work week. Therefore, small craft advisories are in effect. For beachgoers, there is a high risk of rip currents across the north-facing beaches of the islands.

PRELIMINARY POINT TEMPS/POPS. SJU 76 84 74 83 / 70 50 80 80 STT 75 85 75 85 / 40 40 60 60

SJU WATCHES/WARNINGS/ADVISORIES. PR . High Rip Current Risk through late Thursday night for Culebra- North Central-Northeast-Northwest-San Juan and Vicinity.

High Rip Current Risk from Wednesday morning through late Thursday night for Mayaguez and Vicinity.

VI . High Rip Current Risk through late Thursday night for St Croix.

High Rip Current Risk from 6 PM AST this evening through late Thursday night for St Thomas. St John. and Adjacent Islands.

AM . Small Craft Advisory until 8 PM AST Wednesday for Coastal Waters of Southern Puerto Rico out 10 NM.

Small Craft Advisory until 2 AM AST Saturday for Anegada Passage Southward to 17N-Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-Caribbean Waters of Puerto Rico from 10 NM to 17N-Coastal Waters of Northern Puerto Rico out 10 NM- Coastal Waters of Northern USVI and Culebra out 10 NM- Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out 10 NM-Mona Passage Southward to 17N.

Small Craft Advisory until 2 AM AST Saturday for Coastal Waters OF Northwestern Puerto Rico out 10 NM.



SHORT TERM . ER LONG TERM . GL PUBLIC DESK . ERG


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
42085 - Southeast of Ponce, PR 9 mi56 min NE 12 G 16 83°F 83°F4 ft1015.2 hPa (+1.5)
JOXP4 - Jobos Bay Reserve, Puerto Rico 12 mi71 min NE 5.1 79°F 1017 hPa69°F
MGIP4 - 9759110 - Magueyes Islands, PR 32 mi62 min ENE 2.9 G 5.1 81°F 82°F1016.8 hPa
YABP4 - 9754228 - Yabucoa Harbor, PR 33 mi62 min 82°F 71°F
AROP4 - 9757809 - Arecibo, PR 37 mi62 min ENE 5.1 G 8
SJNP4 - 9755371 - San Juan, PR 38 mi62 min ESE 8 G 9.9 79°F 84°F1017 hPa
41053 - San Juan, PR 39 mi56 min E 14 G 18 82°F 84°F6 ft1015.9 hPa (+0.9)
MGZP4 - 9759394 - Mayaguez, PR 41 mi62 min 84°F1016.9 hPa

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

Link to 5 minute data for TJPS

Wind History from JPS (wind in knots)
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Tide / Current Tables for Playa Cortada, Puerto Rico
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Playa Cortada
Click for Map
Tue -- 05:08 AM AST     Moonset
Tue -- 06:46 AM AST     Sunrise
Tue -- 09:35 AM AST     0.76 feet High Tide
Tue -- 09:59 AM AST     0.63 feet Low Tide
Tue -- 04:48 PM AST     Moonrise
Tue -- 05:50 PM AST     Sunset
Tue -- 06:01 PM AST     0.68 feet High Tide
Tue -- 09:54 PM AST     -0.19 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Tide / Current Tables for Playa de Ponce, Puerto Rico
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Playa de Ponce
Click for Map
Tue -- 05:09 AM AST     Moonset
Tue -- 06:46 AM AST     Sunrise
Tue -- 09:18 AM AST     0.76 feet High Tide
Tue -- 10:23 AM AST     0.63 feet Low Tide
Tue -- 04:49 PM AST     Moonrise
Tue -- 05:44 PM AST     0.68 feet High Tide
Tue -- 05:51 PM AST     Sunset
Tue -- 10:18 PM AST     -0.19 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    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 (18,4,5,8)
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Ground Weather Radar Station Puerto Rico,Virgin Islands
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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.