Tuesday, January28, 2020
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Marine Weather and Tides
La Parguera comunidad, 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 6:59AMSunset 6:20PM Tuesday January 28, 2020 6:09 AM AST (10:09 UTC) Moonrise 9:39AMMoonset 9:37PM Illumination 12% Phase: Waxing Crescent; Moon at 3 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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AMZ745 Coastal Waters Of Southwestern Puerto Rico Out 10 Nm- 401 Am Ast Tue Jan 28 2020
Today..Southeast winds 5 to 10 knots veering southwest in the afternoon. Seas 1 to 3 feet. Dominant period 11 seconds. Isolated showers.
Tonight..Southwest winds 5 to 10 knots veering north after midnight. Seas 2 feet or less. Dominant period 11 seconds.
Wednesday..Northeast winds 5 to 10 knots backing southwest in the afternoon. Seas 2 feet or less. Dominant period 10 seconds. Isolated showers through the day.
Wednesday night..Northeast winds 5 to 10 knots. Seas 2 feet or less. Dominant period 8 seconds. Isolated showers.
Thursday..Southeast winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Isolated showers.
Friday..Northeast winds 5 to 10 knots. Seas 2 feet or less. Dominant period 7 seconds. Isolated showers.
Saturday..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
AMZ700 401 Am Ast Tue Jan 28 2020
Synopsis for puerto rico and the uS. Virgin islands waters... Light to gentle winds will continue today, generally out of the south-southwest. Remnant low level moisture from an old frontal boundary will continue to aid in shower development over portions of the regional waters and local passages today, as well. Fairly tranquil seas are currently forecast for the remainder of the week.


7 Day Forecast for Marine Location Near La Parguera comunidad, PR
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location: 17.97, -67.05     debug


Area Discussion for - San Juan, PR
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FXCA62 TJSJ 280821 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 421 AM AST Tue Jan 28 2020

SYNOPSIS.

Enhanced moisture remains in the area, lingering over the Virgin Islands and eastern Puerto Rico this morning. Decreasing moisture is anticipated, but sufficient moisture remains in place to promote the development of afternoon showers. With the steering flow generally out of the south/southwest today, the peak shower activity will be in northeastern and interior Puerto Rico, where localized urban and small stream flooding will be a concern. The trend towards gradually improved weather will continue into midweek.

SHORT TERM. Today through Thursday .

A weak surface trough will continue to pool moisture over the USVI and the eastern sections of Puerto Rico through the short term period. Southerly steering winds will gradually diminish through Thursday as the trough pulls away from the region. However, as moisture lingers over the region and a weak south/southwesterly steering flow prevails, diurnally induced afternoon showers are expected each day over the interior and northeastern sections of Puerto Rico. Localized urban and small stream flooding due to saturated soils across these areas will be the main threat. Normal to above normal daytime temperatures are expected across the lower elevations.

For the rest of PR, sunny to partly cloudy skies are expected over the west coast with minimum rainfall activity. However, as steering winds turn more from the south/southeast by late Wednesday showers are forecast to stream over the southern coastal areas of the island through the evening hours. Across the USVI, cloudiness and shower activity will persist through at least Wednesday, with a gradual improvement on the weather conditions by Thursday as a mid-level ridge builds across the eastern Caribbean.

LONG TERM. Friday through Wednesday .

On Friday, an old frontal boundary will approach the area from the northwest. This will bring additional moisture into the region, then help to sweep out the lingering moisture from the preceding system as we move into the weekend. Increased instability will also be associated with this system on Friday, though its extent will be somewhat limited, with a strong ridge in the mid-levels extending across the Caribbean. A ridge will push into the central Atlantic off the coast of the US Mid-Atlantic. Under the influence of the boundary, as well as the ridge to the northeast, winds will generally have a significant northerly component on Friday, while the surface ridge moving to north of the area will promote easterly winds for Saturday. Gradual drying is anticipated Saturday, with some moisture lingering in the low-levels through the weekend. Sufficient moisture will remain in the area to promote the development of passing showers during the overnight and morning hours, as well as some afternoon showers due to local effects and diurnal heating.

On Sunday, we once again come under the influence of a frontal boundary, this time associated with a Nor'Easter well to our north. With the trough forcing the retreat of the central Atlantic surface high, wind direction becomes less uniform across the area, and winds will likely be somewhat variable as we enter the workweek. As the system presses into the area on Monday into Tuesday, increasing moisture is expected, as well as some instability. Again, the strong mid-level ridge will likely inhibit the increase in instability aloft. With these conditions, increased shower activity and rainfall amounts are anticipated. A surface ridge will build into the central Atlantic, and will help bring a return of easterly winds on Tuesday. Moisture will remain over the area Tuesday and Wednesday, with the boundary stretched essentially zonally south of the ridge. The low is expected to be squeezed between two relatively strong ridges, slowing progression eastward, allowing the pattern to stagnate somewhat into midweek. Generally, the expectation is for a few consecutive days of widespread shower activity early next week, much like we saw at the end of last week. That being said, it would not take a significant change in the forecast with any of the three interacting airmasses early next week to cause a substantial alteration in the forecast here, and changes are likely between now and then. Currently, the most likely alternative is towards less rain, either from less moisture associated with the frontal boundary entering our region or from less time spent stretched across the local islands (though, of course, the option for more rain cannot be disregarded).

AVIATION.

Mainly VFR conditions expected across all terminals through the forecast period. However, -SHRA in and around the USVI/Leeward terminals may cause tempo MVFR cigs. Also, between 16z- 23z SHRA over northeastern PR could affect TJSJ with tempo MVFR conditions. SCT/BKN lyrs btw FL030-FL120 will continue over the USVI/Leeward terminals through much of the fcst period. Light winds with a southerly component will prevail, with sea breeze variations aft 14z at TJSJ/TJBQ.

MARINE.

Seas continue to be relatively tranquil, with heights less than 5 feet anticipated for the next several days across the regional waters. There is a moderate risk of rip currents at north-facing beaches, with generally low risk elsewhere.

PRELIMINARY POINT TEMPS/POPS. SJU 85 74 85 74 / 60 30 60 50 STT 82 73 84 72 / 60 60 60 50

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

SHORT TERM . DS LONG TERM . CRS


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGIP4 - 9759110 - Magueyes Islands, PR 0 mi57 min ENE 1 G 1.9 74°F 81°F1014.3 hPa
MGZP4 - 9759394 - Mayaguez, PR 18 mi57 min 82°F1014.3 hPa
42085 - Southeast of Ponce, PR 28 mi69 min N 5.8 G 5.8 76°F 81°F1 ft1012.6 hPa (-1.3)
PTRP4 29 mi24 min Calm G 2.9 74°F
41115 - Rincon, Puerto Rico (181) 31 mi39 min 81°F3 ft
AROP4 - 9757809 - Arecibo, PR 40 mi51 min E 1.9 G 2.9
JOXP4 - Jobos Bay Reserve, Puerto Rico 44 mi84 min Calm 71°F 1015 hPa70°F
MISP4 - 9759938 - Mona Island, PR 48 mi51 min 76°F 80°F1014.4 hPa

Wind History for Magueyes Island, PR
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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Tide / Current Tables for Magueyes Island, Caribbean Sea, Puerto Rico
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Magueyes Island
Click for Map
Tue -- 02:05 AM AST     -0.07 feet Low Tide
Tue -- 07:01 AM AST     Sunrise
Tue -- 09:38 AM AST     Moonrise
Tue -- 11:37 AM AST     0.45 feet High Tide
Tue -- 06:20 PM AST     Sunset
Tue -- 09:37 PM AST     Moonset
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 Guanica, Puerto Rico
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Guánica
Click for Map
Tue -- 01:57 AM AST     -0.15 feet Low Tide
Tue -- 07:01 AM AST     Sunrise
Tue -- 09:37 AM AST     Moonrise
Tue -- 11:54 AM AST     0.38 feet High Tide
Tue -- 02:33 PM AST     0.24 feet Low Tide
Tue -- 06:19 PM AST     Sunset
Tue -- 09:37 PM AST     Moonset
Tue -- 09:57 PM AST     0.32 feet High 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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (5,6,7,8)
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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.