Monday, March25, 2019 L-36.com


Marine Weather and Tides
Luis M. Cintr�n, PR

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:21AMSunset 6:35PM Monday March 25, 2019 6:30 PM AST (22:30 UTC) Moonrise 11:18PMMoonset 10:00AM Illumination 76% Phase: Waning Gibbous; Moon at 20 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- 414 Pm Ast Mon Mar 25 2019
.small craft should exercise caution...
Tonight..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Northeast swell around 4 feet. Isolated showers.
Tuesday..Southeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. East swell around 4 feet. Scattered showers.
Tuesday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. East swell around 4 feet in the evening. Scattered showers.
Wednesday..Southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Scattered showers.
Wednesday 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.
Thursday..Southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Isolated showers.
Friday..Southeast winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 11 seconds. Scattered showers.
Saturday..East winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Scattered showers.
AMZ700 414 Pm Ast Mon Mar 25 2019
Synopsis for puerto rico and the uS. Virgin islands waters... A small northerly swell will continue to affect the regional waters through early Tuesday. A surface high pressure is expected to move from the western atlantic into the central atlantic through the middle of the week, resulting in moderate to fresh easterly winds. This will promote choppy seas across the regional waters through early Wednesday.


7 Day Forecast for Marine Location Near Luis M. Cintrn, PR
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location: 18.32, -65.64     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 252041
afdsju
area forecast discussion
national weather service san juan pr
441 pm ast Mon mar 25 2019

Synopsis The combination of a surface high pressure moving
into the central atlantic and a surface low pressure expected to
become established across the western atlantic will result in
prevailing southeast winds during the next several days. A wetter
weather pattern is still expected by the latter portion of the
work week into the upcoming weekend as a long wave trough and
frontal boundary approach the region.

Short term Tonight through Wednesday...

the combination of a surface high pressure moving into the
central atlantic and a surface low pressure moving into the
western atlantic will result in a southeasterly wind flow during
the next several days. This will continue to result in patches of
low-level moisture moving across the region during the next
couple of days. The main limiting factors for the development of
organized and deep convection continue to be very dry air above
700 mb and very limited upper-level forcing. This is due to a mid
to upper-level ridge located just east of the local area.

Therefore, significant rainfall activity is not anticipated to
affect the forecast area during the short term period. Under this
weather pattern, expect some passing showers to affect portions of
eastern and southeastern pr and the usvi during the overnight and
morning hours followed by the development of showers across
northwest pr during the afternoon hours to due to daytime heating
and local effects.

Long term Thursday through Monday...

issued 517 am ast Mon mar 25 2019
an amplified deep layered long wave trough will sweep eastward
across the west and central atlantic through Saturday. The erosion
of the upper level ridge across the region in response to the
deepening trough moving across the atlantic will maintain a weak
trade wind cap inversion across the region. This will support good
low level moisture convergence across the forecast area. In the
low levels, an approaching frontal boundary along with the induced
surface trough is forecast to set up across or just west of the
forecast area, as an area of low pressure develops and lifts
northeast across the west atlantic through Saturday. This will aid
in pushing the moisture along the frontal boundary shear line
further southward across the local region and consequently
maintain a fairly moist environment.

Therefore still looking for a wetter weather pattern with good
upper level dynamics and instability to favor increased convection
across the islands and coastal waters at least though Saturday or
early Sunday. By late Sunday and through Monday, expect a return
of an east to northeast wind flow, as a surface high pressure
ridge will enter and move eastward across the west atlantic and
the aforementioned surface low weakens and lifts further northwards.

Occasional patches of low level trade wind moisture will still
however make its way across the region steered by the prevailing
wind flow but activity should be less frequent by then.

Aviation MainlyVFR conditions expected to prevail across all
terminals during the next 24 hours. However, tempo MVFR conditions
possible at tjmz and tjbq through 22z due to shra. Low level winds
will continue from the east-southeast between 10-15 kt with higher
gusts through the rest of the afternoon. Light and variable winds
expected overnight.

Marine Marine conditions will continue to remain a bit choppy
due to a combination of northerly swell and moderate to fresh
trade winds. Seas up to 6 feet are expected to continue through
Tuesday, therefore, small craft operators should exercise
caution. Across the offshore atlantic waters, seas up to 7 feet
will remain possible. Therefore, a small craft advisory continues
in effect for these waters until Tuesday afternoon. The rip
current risk will continue high for portions of the northern
beaches of puerto rico and culebrita beach in culebra through
Tuesday.

Preliminary point temps pops
Sju 74 89 74 88 20 20 30 30
stt 75 84 76 85 20 40 40 40

Sju watches warnings advisories
Pr... High rip current risk through Tuesday afternoon for northeast-
san juan and vicinity.

High rip current risk through late tonight for north central-
northwest.

High rip current risk through Tuesday afternoon for culebra.

Vi... None.

Am... Small craft advisory until 2 pm ast Tuesday for atlantic waters
of puerto rico and usvi from 10 nm to 19.5n.

Short term... Gl
long term... .From previous discussion


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41056 10 mi30 min ESE 14 G 16 79°F 80°F1013.9 hPa (+0.0)
CLBP4 - 9752235 - Culebra, PR 18 mi30 min 83°F 82°F1015.2 hPa (-0.0)
ESPP4 - 9752695 - Esperanza, PR 18 mi36 min 80°F 81°F1014.5 hPa
YABP4 - 9754228 - Yabucoa Harbor, PR 21 mi30 min 82°F 71°F
41053 - San Juan, PR 27 mi30 min E 14 G 18 81°F 80°F6 ft1013.4 hPa (-0.0)
SJNP4 - 9755371 - San Juan, PR 27 mi30 min 82°F 81°F1014.4 hPa (+0.4)
CHAV3 - 9751639 - Charlotte Amalie, VI 38 mi30 min 80°F 1014.6 hPa (-0.3)
JOXP4 - Jobos Bay Reserve, Puerto Rico 40 mi45 min E 8 80°F 1016 hPa69°F
41052 - South of St. John, Virgin Islands 47 mi30 min ESE 14 G 16 80°F 80°F5 ft1013.8 hPa (-0.0)

Wind History for Fajardo, PR
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Airport Reports
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Tide / Current Tables for Playa de Fajardo, Puerto Rico
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Playa de Fajardo
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Mon -- 12:17 AM AST     1.56 feet High Tide
Mon -- 06:22 AM AST     Sunrise
Mon -- 06:46 AM AST     0.18 feet Low Tide
Mon -- 09:59 AM AST     Moonset
Mon -- 12:10 PM AST     0.92 feet High Tide
Mon -- 06:10 PM AST     -0.13 feet Low Tide
Mon -- 06:34 PM AST     Sunset
Mon -- 11:18 PM AST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.61.51.310.70.40.20.20.30.50.70.80.90.90.70.50.2-0-0.1-0.10.10.40.81.1

Tide / Current Tables for Vieques Passage, Puerto Rico Current
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Vieques Passage
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Mon -- 02:09 AM AST     0.84 knots Max Flood
Mon -- 05:23 AM AST     -0.00 knots Slack
Mon -- 06:22 AM AST     Sunrise
Mon -- 08:44 AM AST     -0.89 knots Max Ebb
Mon -- 09:59 AM AST     Moonset
Mon -- 12:19 PM AST     0.00 knots Slack
Mon -- 02:58 PM AST     0.53 knots Max Flood
Mon -- 05:47 PM AST     -0.00 knots Slack
Mon -- 06:34 PM AST     Sunset
Mon -- 08:44 PM AST     -0.57 knots Max Ebb
Mon -- 11:17 PM AST     Moonrise
Mon -- 11:32 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 and Satellite Images
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wmap_A
GOES 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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Wind Forecast for (18,4,5,8)
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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 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.