Sunday, May20, 2018

Marine Weather and Tides
Aguadilla, PR

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:02AMSunset 7:19PM Sunday May 20, 2018 1:50 PM AST (17:50 UTC) Moonrise 11:13AMMoonset 12:00AM Illumination 33% Phase: Waxing Crescent; Moon at 6 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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7 Day Forecast for Marine Location Near Aguadilla, PR
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location: 21.66, -71.76     debug

Area Discussion for - San Juan, PR
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Fxca62 tjsj 201512
area forecast discussion
national weather service san juan pr
1112 am ast Sun may 20 2018

Update Sunny to partly cloudy skies prevailed during the
morning hours across the islands. By mid morning, streamers were
developing off the usvi, culebra and vieques and some low level
clouds were also developing over the mountain ranges of puerto
rico. Isolated to scattered showers are expected to develop across
these areas during the next few hours. The heaviest shower
activity is expected once again over western puerto rico, where an
isolated thunderstorm could develop during the afternoon hours.

Minor changes were made to the short term wind grids, however,
breezy conditions will continue across the coastal areas of the
islands and across the regional waters today.

Aviation MainlyVFR conditions are expected to prevail across
all the terminals. However, shra will develop over western pr
impacting mainly tjmz and the vcty of tjbq. A brief isolated
thunderstorm is also possible across western pr. Elsewhere,
passing shra at times can not be ruled out. Latest 20 12z tjsj
upper air sounding indicated east winds at 7-26 kts below fl100.

Marine Ponce and san juan buoys were indicating seas at 5 and 6
feet respectively, and east winds around 20 knots with higher
gusts. The outer waters are expected to range between 6 to 8 feet
through at least Monday morning. Therefore, small craft advisories
continue in effect. A high rip current risk also continues through
at least Monday afternoon for the northwest coast of puerto rico.

There is a high risk today for the north coast of pr and st.


Prev discussion issued 424 am ast Sun may 20 2018
synopsis... A persistent surface high pressure system remains to
the north of the region as a result moderate to fresh winds will
remain across the region along with brief passing showers. A tutt
low positioned to the northeast of the leewards islands will move
way from the area by Wednesday and be replaced by ridging aloft.

Seasonable weather pattern is expected to prevail with showers
forming during the afternoon across northwest and western puerto.

Short term... Today through Tuesday... Partly cloudy skies
prevailed across the forecast area overnight and early this
morning with frequent passing showers observed across the coastal
waters and the eastern sections of the local islands. However,
rainfall accumulations associated with these showers were minimal.

Temperatures were in the mid 70s at lower elevations under
easterly winds between 10 and 15 mph.

A mid to upper level trough (tutt low) will continue to meander across
the central atlantic and into the northeastern caribbean through the
forecast period. At lower levels, a board high pressure across the
central atlantic will continue to yield brisk easterly winds early
this week. There is no major changes to the short term forecast due
to the lack of upper level forcing and moisture near or below the
normal range. As a result, continue to expect a seasonable weather
pattern with showers embedded in the trades at times as well as
showers and isolated thunderstorms developing in the afternoon
across western sectors of puerto rico each day. However, intensity
and areal coverage of showers should decrease mon-tue as low level
moisture decreases.

Long term... Wednesday through Monday... The local area will remain
under the influence of a strong surface high pressure system. As a
result easterly winds of 10 to 20 kts with higher gusts as well as
showers embedded in the trade winds can be expected through
Monday. The tutt low positioned to the northeast of the islands
will begin to move away from the area late Wednesday into
Thursday and will be replaced with ridging aloft through the
weekend. A seasonable weather pattern is expected to prevail with
brief passing showers. Model guidance depicts a tutt low sinking
into the region again on Tuesday which could increase rain chances
across the islands.

Aviation... MostlyVFR conds at all TAF sites with vcsh likely in
and around jsj ist isx and leeward terminals through the morning
hours. Aft 20 16z shra tsra expected across western puerto rico to
result in brief MVFR conds at jmz and possibly jbq through about
20 22z. Easterly winds 15 to 25 knots aft 20 12z with some sea
breeze variations.

Marine... Today a small craft advisory is in effect for all
local waters ways due to seas of 8 feet and winds of 15 to 20 kts
with higher gusts. These hazardous conditions will prevail across
the area through Monday. A high rip current risk exist for the
northern and eastern beaches of puerto rico as well as the beaches
of carambola, salt river and cramer park that are in st. Croix.

Preliminary point temps pops
Sju 86 75 86 76 30 20 40 40
stt 79 78 79 78 30 20 40 40

Sju watches warnings advisories
Pr... High rip current risk through late tonight for north central-
northeast-san juan and vicinity. High rip current risk through
Monday afternoon for northwest- western interior.

Vi... High rip current risk through late tonight for st croix.

Am... Small craft advisory until 8 pm ast this evening for anegada
passage southward to 17n-coastal waters of northwestern
puerto rico out 10 nm-coastal waters of northern usvi and
culebra out 10 nm-coastal waters of southern puerto rico
out 10 nm-coastal waters of southern usvi vieques and
eastern puerto rico out 10 nm.

Small craft advisory until 8 am ast Monday for atlantic waters
of puerto rico and usvi from 10 nm to 19.5n-caribbean
waters of puerto rico from 10 nm to 17n-mona passage
southward to 17n.

Small craft advisory until 2 am ast Monday for coastal waters of
northern puerto rico out 10 nm.


Weather Reporting Stations
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Airport Reports
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Tide / Current Tables for Abrahams Bay, Mayaguana Island, Bahamas
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Abrahams Bay
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Sun -- 12:18 AM EDT     3.27 feet High Tide
Sun -- 06:10 AM EDT     Sunrise
Sun -- 06:51 AM EDT     0.74 feet Low Tide
Sun -- 11:17 AM EDT     Moonrise
Sun -- 12:56 PM EDT     2.81 feet High Tide
Sun -- 06:56 PM EDT     0.84 feet Low Tide
Sun -- 07:27 PM EDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
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Tide / Current Tables for
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Weather Map and Satellite Images
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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 (13,3,4,5)
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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 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 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.