Marine Weather and Tides
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 5:28AM||Sunset 5:36PM||Saturday September 23, 2017 5:04 AM CST (11:04 UTC)||Moonrise 7:54AM||Moonset 9:33PM||Illumination 8%|
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7 Day Forecast for Marine Location Near Pole Ojea, PRHourly EDIT Help
Area Discussion for - San Juan, PR  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxca62 tjsj 230800|
area forecast discussion
national weather service san juan pr
issued by national weather service miami fl
400 am ast Sat sep 23 2017
short term... Deep tropical moisture coupled with a south to
southeast flow will keep precipitable water values well over 2
inches through the weekend. Scattered showers with isolated
thunderstorms will persist, and the high precipitable water
values ups the potential for heavy rainfall.
Any additional rainfall that puerto rico receives will continue to
aggravate the ongoing flooding on many of the rivers. Also, there
is standing water away from the rivers in many locations as well.
Mudslides have occurred across the island and will likely
continue if additional rainfall is received. Thus, in coordination
with the office in san juan, we will keep the flash flood watch
up across all of puerto rico through 8 am.
It is difficult to ascertain conditions in the area as nearly all
communications links are down. However, some gauges continue to
report. Some river and stream levels are slowly falling but still
remain in flood.
Heat index values will begin to rise at or above 100 for the
weekend. This will make recovery efforts difficult and overall
living unpleasant as electricity remains out across the island.
Long term... The pattern will change Tuesday into Tuesday night.|
Flow will become easterly and precipitable water values will drop
to around 1.75 inches. This will bring more seasonable winds and
relatively drier conditions to the forecast area.
Aviation South to southeast flow will continue to favor
showers and scattered thunderstorms through the weekend over
puerto rico. The highest chance for rain will be over the southern
slopes of puerto rico, where precipitation will be enhanced by
upslope flow. The us virgin islands is experiencing a drier
airmass with improving conditions.
Marine Small craft advisories will be discontinued. Showers
and thunderstorms with heavy rain, locally higher winds and waves,
and reduced visibilities will be possible through the weekend.
Preliminary point temps pops
Sju 87 80 87 79 30 30 30 30
stt 83 82 83 81 30 40 60 40
Sju watches warnings advisories
Short term... 99
long term... .99
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|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Puerto Rico EDIT
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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.