Marine Weather and Tides
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 6:48AM||Sunset 6:56PM||Sunday March 18, 2018 7:20 PM AST (23:20 UTC)||Moonrise 7:45AM||Moonset 8:10PM||Illumination 5%|
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7 Day Forecast for Marine Location Near Aguadilla, PRHourly EDIT Help
Area Discussion for - San Juan, PR  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxca62 tjsj 181955|
area forecast discussion
national weather service san juan pr
355 pm ast Sun mar 18 2018
Synopsis Fair weather is expected to prevail much of the
upcoming workweek with afternoon showers developing each day
over the cordillera central and west sections of puerto rico.
A frontal boundary will move close to the local isles Friday
into the weekend.
Short term Tonight thru Tuesday...
heights will continue to fall through at least tomorrow with
precipitable water values remaining near the normal range which
is 1.35 inches. On Tuesday, ridge pattern aloft will build across
the local isles and hold through midweek. At lower levels, winds
are expected to be light and variable overnight, becoming more
east southeast Monday and Tuesday.
Under the aforementioned pattern expect a few passing showers
across the northern and eastern sections of puerto rico as well
as the usvi each day. Afternoon showers are also expected to
develop over the cordillera central and west areas of the island
both days. However, the intensity and areal coverage of showers
should decrease on Tuesday under building ridge.
Long term Wed thru mon... Issued 515 am ast Sun mar 18 2018
Wednesday, the surface and mid to upper level ridge starts to
weaken ahead of a cold front moving off the east coast of the
united states. Southerly winds will carry warm moist air over the
region giving a possibility for showers during the afternoon
Wednesday through early Friday.
Friday, a col will form to the northeast of puerto rico with a
weak shear line forming over the western half of puerto rico with
showers and possible thunderstorms.
Saturday-Monday, a prevailing east northeast wind flow combined
with low level moisture will keep the islands in a unsettled
pattern with isolated showers mainly during the morning and
Aviation MainlyVFR conditions will prevail across all terminals
during the next 24 hours. However, +shra over the interior sections
of pr could result in tempo MVFR conds at tjmz tjbq tjsj through at
least 23z. Light winds with a southerly component will continue
through the evening hours... Light and variable during the
Marine Tranquil marine conditions will continue to prevail
across the local waters during the next few days with seas below
the small craft criteria.
Preliminary point temps pops
Sju 86 74 85 74 30 20 20 20
stt 83 72 84 74 20 20 30 30
Sju watches warnings advisories
short term... .Om
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|Abrahams Bay |
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Sun -- 03:08 AM EDT 0.71 feet Low Tide
Sun -- 06:57 AM EDT Sunrise
Sun -- 07:49 AM EDT Moonrise
Sun -- 09:17 AM EDT 3.07 feet High Tide
Sun -- 03:24 PM EDT 0.74 feet Low Tide
Sun -- 07:02 PM EDT Sunset
Sun -- 08:15 PM EDT Moonset
Sun -- 09:33 PM EDT 3.12 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
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Weather Map and Satellite Images(on/off)  HelpWeather Map
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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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for (19,4,5,8)(on/off)  Help
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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.