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 6:00AM||Sunset 6:44PM||Tuesday April 24, 2018 8:10 AM AST (12:10 UTC)||Moonrise 2:02PM||Moonset 2:13AM||Illumination 67%|
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|AMZ735 Coastal Waters Of Southern Puerto Rico Out 10 Nm- 408 Am Ast Tue Apr 24 2018 |
.small craft should exercise caution...
Today..East winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
Tonight..East winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers through the night.
Wednesday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
Wednesday night..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
Thursday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers.
Friday..East winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
Saturday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
|AMZ700 408 Am Ast Tue Apr 24 2018 |
Synopsis for puerto rico and the uS. Virgin islands waters... Choppy seas are expected today across the local waters for the next several days with a moderate to fresh easterly wind. Isolated to scattered showers are expected across the local waters for the rest of the week.
7 Day Forecast for Marine Location Near Salinas, PRHourly EDIT Help
Area Discussion for - San Juan, PR  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxca62 tjsj 240826|
area forecast discussion
national weather service san juan pr
426 am ast Tue apr 24 2018
Synopsis Enhanced amounts of moisture will linger into today
but drier air is expected to move in by late this afternoon. The
upper trough is expected to continue to move east through the
local islands and the axis should be to our east by this evening,
leaving the local islands in the subsident side of the upper
trough. Ridge aloft to prevail for the rest of the week along with
normal or slightly below normal moisture. Any afternoon shower
and thunderstorm activity for the rest of the week is expected to
be mainly due to local effects. Moderate easterly winds to
continue through the rest of the week.
Short term Today through Thursday...
cloudy skies prevailed across puerto rico and the u.S. Virgin
islands overnight. A line of showers moved across the eastern half
of puerto rico, with only light passing showers affecting the
southeast municipalities of puerto rico. Little shower activity was
observed over the u.S. Virgin islands. Low level moisture embedded
in the trade winds will continue to produce isolated light showers
across the region this morning. For this afternoon, the combination
of low level moisture, with daytime heating and orographic effects
will induce the development of showers with thunderstorms mainly
across the western interior and northwest sections of puerto rico.
In the u.S. Virgin islands, partly cloudy skies are expected with
some passing showers affecting the territory from time to time.
For late this afternoon into tonight, a slot of dry air will
encompass the region. As a result, limited shower activity is
expected tonight and Wednesday. For Thursday, another patch of low
level moisture will affect the region. In addition, a moist east
southeast wind flow will result in good chances for shower and
thunderstorm development mainly during the afternoon hours on
Long term Friday through Wednesday...
near normal moisture and upper ridge will cause a weather pattern
of some isolated to scattered brief showers across the local|
waters, usvi and eastern pr during the overnight and early morning
hours. Afternoon shower and possible thunderstorm development will
be mainly due to local effects over pr. Therefore, the available
moisture will combine with the diurnal heating and sea breeze
convergence to cause some showers and possible thunderstorms. This
weather pattern can be expected through the weekend and into
early next week.
The very long range models started hinting at a significant
increase in moisture and in shower activity by next Wednesday as
a frontal boundary settles north of the local islands. This is way
too far into the forecast period and the confidence is very low.
We will continue to monitor but it would not be surprising if the
model guidance varies widely from today until that date arrives.
Aviation Vfr conditions will prevail across all TAF sites through
23 17z. Increasing cloudiness with shra tsra are expected across
tjsj, tjmz and tjbq from 24 18-24 22z. As a result, brief periods of
MVFR conditions can be expected. Low level winds will be mainly east
southeast at 10 to 15 kts.
Marine Seas are now at 6 feet or less and the winds are
expected to be up to 15 knots across most of the local waters with
some areas that could reach 20 knots. The local seas are expected
to remain up to 6 feet or less for the next several days. There is
a moderate risk of rip currents across many of the local beaches,
please refer to the local surf zone forecast for more information.
Preliminary point temps pops
Sju 84 75 89 76 40 20 20 40
stt 85 75 86 77 20 20 40 40
Sju watches warnings advisories
Vi... High rip current risk until 6 am ast early this morning for st
Short term... Fc
long term... .Ja
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|JOXP4 - Jobos Bay Reserve, Puerto Rico||4 mi||85 min||NE 1.9||77°F||1017 hPa||70°F|
|YABP4 - 9754228 - Yabucoa Harbor, PR||26 mi||40 min||81°F|
|SJNP4 - 9755371 - San Juan, PR||37 mi||40 min||79°F||80°F||1017.7 hPa|
|MGIP4 - 9759110 - Magueyes Islands, PR||40 mi||40 min||ESE 2.9 G 6||79°F||81°F||1016.9 hPa|
|AROP4 - 9757809 - Arecibo, PR||43 mi||40 min||SE 4.1 G 5.1|
Wind History for Penuelas (Punta Guayanilla), PR(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
Wind History from JPS (wind in knots)
|1 day ago|
|2 days ago|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Playa Cortada |
Click for Map
Tue -- 02:13 AM AST Moonset
Tue -- 06:03 AM AST Sunrise
Tue -- 06:11 AM AST 0.84 feet High Tide
Tue -- 08:17 AM AST 0.56 feet Low Tide
Tue -- 02:02 PM AST Moonrise
Tue -- 04:33 PM AST 0.68 feet High Tide
Tue -- 06:44 PM AST Sunset
Tue -- 07:21 PM AST 0.13 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Las Mareas |
Click for Map
Tue -- 02:12 AM AST Moonset
Tue -- 06:02 AM AST Sunrise
Tue -- 06:16 AM AST 0.64 feet High Tide
Tue -- 02:01 PM AST Moonrise
Tue -- 04:08 PM AST 0.10 feet Low Tide
Tue -- 06:43 PM AST Sunset
Tue -- 10:08 PM AST 0.24 feet High Tide
Tue -- 10:56 PM AST 0.24 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
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.
target = "new">Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for (8,2,3,4)(on/off)  Help
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