Sunday, October22, 2017

Marine Weather and Tides
Arroyo, PR

Version 3.4
What's New / NOTES
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.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 5:29AMSunset 5:20PM Sunday October 22, 2017 4:41 PM CST (22:41 UTC) Moonrise 7:59AMMoonset 9:56PM Illumination 8% 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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7 Day Forecast for Marine Location Near Arroyo, PR
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location: -34.81, -58.22     debug

Area Discussion for - San Juan, PR
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Fxca62 tjsj 221953
area forecast discussion
national weather service san juan pr
353 pm ast Sun oct 22 2017

Synopsis A relatively dry and stable weather pattern will prevail
across the forecast area as an upper level ridge will continue as
the main weather feature across the region until at least Monday.

An upper trough northeast of the region is expected to sink
southward over the lesser antilles by midweek increasing the
moisture across the local islands.

Short term A fair and stable weather pattern is forecast to
prevail across the region the next couple of days. There is still
a chance for locally and diurnally induced afternoon showers each
day, mainly over the western portions of puerto rico.

Long term An upper level low trough northeast of the region is expected to
sink southward toward the leeward antilles on Tuesday and Wednesday.This
feature will result in a gradual increase in moisture across the region
by midweek. However, at this moment not significant or widespread precipitation
is expected. A tropical wave is expected to reach the region Friday
generating a better chance of showers and thunderstorms through next

Aviation MostlyVFR conditions expected across all terminals
throughout the forecast period. E-se winds of 10-15kt diminishing
below 10kt after 23 00z. Some brief passing shra near the tjsj,
tisx, tist terminals possible overnight into the early morning
hours. Winds increasing once again above 10-15kt after 23 14z with
sea breeze variations developing.

Marine Small craft operators are urged to exercise caution
mainly across the caribbean waters as seas will be up to 6 feet
and winds above the 20 knots. The atlantic waters seas will be up
to 5 feet with winds up to 15 knots.Low to moderate rip current
risk across all the local beaches.

Preliminary point temps pops
Sju 77 87 75 88 20 20 20 20
stt 77 87 76 88 20 20 30 30

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Om
long term... .Em

Weather Reporting Stations
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Airport Reports
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Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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Weather Map
IR Satellite Image from GEOS

GOES Local Image of Puerto Rico    EDIT

Wind Forecast for (18,4,5,8)
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Ground Weather Radar Station Puerto Rico,Virgin Islands
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weather_mapweather_map weather_map

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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.