Friday, January24, 2020
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Marine Weather and Tides
Vieques, PR

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 6:56AMSunset 6:13PM Friday January 24, 2020 9:29 PM AST (01:29 UTC) Moonrise 6:45AMMoonset 6:07PM Illumination 0% Phase: New Moon; Moon at 29 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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AMZ725 Coastal Waters Of Southern Usvi Vieques And Eastern Puerto Rico Out 10 Nm- 916 Pm Ast Fri Jan 24 2020
.small craft advisory in effect through late Saturday night...
Rest of tonight..Northeast winds 5 to 10 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 11 seconds. Northeast swell 4 to 6 feet. Scattered showers.
Saturday..Northeast winds 5 to 10 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 11 seconds. Northeast swell 4 to 6 feet. Scattered showers.
Saturday night..Northeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Northeast swell 4 to 5 feet. Numerous showers.
Sunday..Northeast winds 5 to 10 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 12 seconds. Northeast swell around 4 feet. Scattered showers.
Sunday night..Northeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Scattered showers.
Monday..Southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 11 seconds. Scattered showers.
Tuesday..Southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. East swell around 4 feet. Scattered showers.
Wednesday..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Scattered showers.
AMZ700 916 Pm Ast Fri Jan 24 2020
Synopsis for puerto rico and the uS. Virgin islands waters... A northerly swell generated by a surface low north of the region is causing hazardous seas through the weekend across the atlantic waters and local passages. Light winds with a northerly component will prevail through Sunday, becoming more easterly and southerly early next week. The remnants of the front will continue to cause cloudiness and showers over the waters during the weekend as well, especially over the eastern and southern waters.


7 Day Forecast for Marine Location Near Vieques, PR
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location: 18.15, -65.43     debug


Area Discussion for - San Juan, PR
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FXCA62 TJSJ 241804 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 204 PM AST Fri Jan 24 2020

SYNOPSIS. Low level moisture associated to the cold front will continue to aid in the development of showers through the weekend. A long period swell will continue to cause hazardous seas for through Sunday as well create life threatening rip currents along the Atlantic beaches of PR, Culebra and St. Thomas.

SHORT TERM. Today through Sunday . Cold front will remain mainly east and south of the forecast area, however, lingering low-level moisture associated to the front will continue over the region through the short term period. For the rest of today, diurnally induced showers are currently developing along the Cordillera Central, with moderate to locally heavy rainfall observed over the municipalities of Yauco and San German. The 12z SJU sounding indicated a weak westerly steering wind flow and this should keep showers over the interior sections of PR and later this afternoon over the eastern sections, including the San Juan metro area. As the front moves further away from the region a col develops over the region and this will keep a very light and variable wind flow through Sunday. At mid-levels, two short wave troughs are forecast to move from the west, the first one on Saturday morning and the second one on Sunday afternoon. This will continue to provide some instability for showers to develop each afternoon, mainly over the interior of PR. Showers will continue on and off over the USVI through the short term period.

LONG TERM . Monday through Saturday . From Prev Discussion .

Our pesky front will continue to impact us as we begin the workweek. Though the main low pressure system associated with the front will be well off to the east, leftover moisture along with additional moisture being drawn up from the south will keep us wet. Upper level atmospheric conditions still look uninspiring in forecast models, so only a minimal thunderstorm threat is expected. However, given the moist conditions expected over the weekend and associated saturated soils, additional rainfall on Monday could lead to urban and small stream flooding. Less of a flooding threat is expected for Tuesday, though there will still be some lingering moisture to produce scattered showers. During this period of the first part of the week, it should be mentioned that the southern coast where the earthquakes have occurred will be particularly susceptible to rainfall under these conditions.

For the rest of the week, another cold front moving in from the west will bring more rainfall across the region. At this point, Wednesday and Thursday will only see scattered showers. However, as the front nears on Friday and Saturday, shower activity could become more numerous according to long range models. Again, upper level conditions still do not look favorable for thunderstorms, though an isolated thunderstorm cannot be ruled out.

AVIATION. Mainly VFR conditions will prevail at TAF sites thru 25/10Z except for brief MVFR CIGs at TIST/TISX due SHRA associated with cold front in the vcnty. VRB sfc winds and SHRA expected for the USVI/Leeward Islands thru 25/06z. For the rest of the terminals, sfc winds will continue vrb and shifting more to the north by 25/14z.

MARINE. Small craft advisories are in effect through the weekend due to long period northerly swell, with seas building between 6-10 feet tonight across the Atlantic waters and passages. The highest seas are forecast across the offshore Atlantic waters. A high risk of rip currents will continue for the northwest to northeast beaches of PR as well across the northern beaches of Culebra and St. Thomas through at least Sunday. Seas improve early in the workweek.

PRELIMINARY POINT TEMPS/POPS. SJU 74 83 74 82 / 70 60 60 60 STT 73 83 72 83 / 50 70 70 30

SJU WATCHES/WARNINGS/ADVISORIES. PR . High Rip Current Risk through Sunday afternoon for Culebra- Mayaguez and Vicinity-North Central-Northeast-Northwest-San Juan and Vicinity-Southeast.

VI . High Rip Current Risk through Sunday afternoon for St Thomas. St John. and Adjacent Islands.

AM . Small Craft Advisory until 2 PM AST Sunday for Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-Coastal Waters OF Northwestern Puerto Rico out 10 NM-Coastal Waters of Northern Puerto Rico out 10 NM-Mona Passage Southward to 17N.

Small Craft Advisory from 8 PM this evening to 2 AM AST Sunday for Anegada Passage Southward to 17N-Coastal Waters OF Southwestern Puerto Rico out 10 NM-Coastal Waters of Southern USVI Vieques and Eastern Puerto Rico out 10 NM.

Small Craft Advisory until 2 AM AST Sunday for Coastal Waters of Northern USVI and Culebra out 10 NM.



SHORT TERM . FRG LONG TERM . DS PUBLIC DESK . ICP


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ESPP4 - 9752695 - Esperanza, PR 4 mi66 min ENE 1 G 1.9 77°F 81°F1015.4 hPa
41056 8 mi90 min ENE 7.8 G 9.7 77°F 81°F5 ft1013.6 hPa (+1.5)
CLBP4 - 9752235 - Culebra, PR 12 mi60 min 82°F1015.1 hPa
YABP4 - 9754228 - Yabucoa Harbor, PR 22 mi60 min 78°F 71°F
CHAV3 - 9751639 - Charlotte Amalie, VI 30 mi60 min 1015.2 hPa
41052 - South of St. John, Virgin Islands 36 mi90 min ENE 3.9 G 12 74°F 80°F2 ft1014 hPa (+1.7)
LAMV3 39 mi60 min 72°F 81°F
41053 - San Juan, PR 42 mi90 min ENE 9.7 G 12 78°F 81°F7 ft1013.7 hPa (+1.8)
SJNP4 - 9755371 - San Juan, PR 42 mi60 min WSW 6 G 8 74°F 81°F1015.6 hPa
JOXP4 - Jobos Bay Reserve, Puerto Rico 44 mi105 min E 1.9 78°F 1015 hPa73°F
CHSV3 - 9751364 - Christiansted Harbor, Virgin Islands 48 mi60 min NE 2.9 G 6 81°F1015 hPa
LTBV3 - 9751401 - Lime Tree Bay, VI 48 mi60 min NE 6 G 8 81°F1015.3 hPa

Wind History for Isabel Segunda, Vieques Island, PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR36 mi34 minN 010.00 miLight Rain78°F73°F85%1015.5 hPa

Link to 5 minute data for TJSJ

Wind History from JSJ (wind in knots)
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Last 24hrW3CalmCalmCalmE3SE3CalmCalmCalmCalmNW63N6453N6NE7E9NE7E7E8E6Calm
1 day agoE4CalmS33CalmCalmSW4S3S4Calm3CalmSE7SE5CalmNW12NW17
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2 days agoSE3CalmCalmCalmCalmCalmCalmCalmCalmE33SE3E6E8SE5SE8SE6SE6S6SE8S6S3SE6E6

Tide / Current Tables for Punta Mulas, Isla de Vieques, Puerto Rico
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Punta Mulas
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Fri -- 01:38 AM AST     -0.26 feet Low Tide
Fri -- 06:44 AM AST     Moonrise
Fri -- 06:56 AM AST     Sunrise
Fri -- 09:04 AM AST     1.13 feet High Tide
Fri -- 03:33 PM AST     0.24 feet Low Tide
Fri -- 05:44 PM AST     New Moon
Fri -- 06:07 PM AST     Moonset
Fri -- 06:11 PM AST     Sunset
Fri -- 08:09 PM AST     0.55 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.1-0.2-0.3-0.200.30.60.91.11.11.10.90.70.50.30.30.30.30.40.50.50.50.40.2

Tide / Current Tables for Vieques Passage, Puerto Rico Current (2)
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Vieques Passage
Click for Map
Fri -- 01:41 AM AST     -0.00 knots Slack
Fri -- 04:20 AM AST     -0.38 knots Max Ebb
Fri -- 06:45 AM AST     Moonrise
Fri -- 06:47 AM AST     0.00 knots Slack
Fri -- 06:56 AM AST     Sunrise
Fri -- 10:27 AM AST     0.75 knots Max Flood
Fri -- 01:41 PM AST     -0.00 knots Slack
Fri -- 05:17 PM AST     -0.90 knots Max Ebb
Fri -- 05:44 PM AST     New Moon
Fri -- 06:07 PM AST     Moonset
Fri -- 06:11 PM AST     Sunset
Fri -- 09:07 PM AST     0.00 knots Slack
Fri -- 11:42 PM AST     0.45 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.30.2-0.1-0.3-0.4-0.3-0.20.10.30.60.70.70.60.3-0.1-0.5-0.8-0.9-0.9-0.7-0.4-00.20.4

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 (20,4,5,8)
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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 numerous 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.