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 5:20AM||Sunset 6:07PM||Wednesday June 28, 2017 4:52 PM CST (22:52 UTC)||Moonrise 10:48AM||Moonset 10:12PM||Illumination 24%|
EDIT (on/off)  Help
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 281921|
area forecast discussion
national weather service san juan pr
321 pm ast Wed jun 28 2017
Synopsis Upper trough low over the central atlantic extending
southwest to just north of pr usvi drifting slowly east. Tropical
wave over the extreme eastern caribbean moving west at 15 to 20
Short term Tonight through Friday night... Upper low mentioned
above will remain in place to the northeast of the caribbean
through at least Friday. Tropical wave over extreme eastern
caribbean will move west and begin to impact the u.S. Virgin
islands late tonight or early Thursday with showers and
thunderstorms spreading westward through puerto rico Thursday and
Thursday night. Weak trough aloft will provide good upper level
dynamics that will likely enhance shower thunderstorms activity
associated with the tropical wave. To that effect decided to
increase probability of precipitation for both Thursday and
Thursday night. Models indicate that moisture associated with this
wave will linger across the local area through Friday night.
Long term Saturday through Thursday... A drier airmass is
expected to move in as the wave departs the local area. This will
dominates the weather conditions across usvi and pr through at
least Sunday. Another tropical wave, currently across the central
tropical atlantic, is expected to affect the local area Monday.
Another dry airmass is expected to move in behind this wave, with
yet another tropical wave affecting the region Wednesday through
Aviation Vfr conds expected for the next 24 hours across the
local terminals. Vcsh is expected early in the morning for tist,
tisx, and tjsj. Afternoon convection is expected mainly across the
western sections of pr, which could affect tjmz and cause tempo MVFR
conds after 28 18z. Saharan dust is still present, causing haze but
visibility will still be p6sm. Winds from the east at 5-10kt
expected early this morning, increasing to about 15kt with
occasional gusts after 28 13z.
Marine Seas up to 6 feet and winds up to 20 knots are expected
across the coastal waters. Small craft should exercise caution
across the atlantic and caribbean nearshore waters due to winds.
Mariners should always keep in mind that winds and seas are likely
to be higher in the vicinity of thunderstorms.
Preliminary point temps pops
Sju 80 89 77 89 10 50 60 60
stt 80 88 79 88 30 60 60 60
Sju watches warnings advisories
Short term... Em
long term... .Rgh
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
Click EDIT to select an airport
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help
EDIT (on/off)  Help
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Puerto Rico EDIT
Wind Forecast for (18,4,5,8)(on/off)  Help
Ad by Google
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.