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 6:10AM||Sunset 6:53PM||Sunday April 22, 2018 5:35 PM AST (21:35 UTC)||Moonrise 12:09PM||Moonset 12:34AM||Illumination 50%|
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|AMZ741 Mona Passage Southward To 17n- 426 Pm Ast Sun Apr 22 2018 |
.small craft should exercise caution...
Tonight..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. Northeast swell 4 to 5 feet. Isolated showers through the night.
Monday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Northeast swell around 4 feet. Isolated showers.
Monday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated Thunderstorms in the evening. Scattered showers through the night.
Tuesday..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Tuesday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Wednesday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Thursday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Friday..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
|AMZ700 426 Pm Ast Sun Apr 22 2018 |
Synopsis for puerto rico and the uS. Virgin islands waters... Surface high pressure across the west and northeast atlantic will continue to produce a moderate to locally fresh wind flow across the regional waters through early this week. Shower and Thunderstorms are expected to develop across the regional waters as an upper level trough moves over the islands from the west interacting with plenty of tropical moisture Monday and Tuesday.
7 Day Forecast for Marine Location Near El Combate, PRHourly EDIT Help
Area Discussion for - San Juan, PR  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxca62 tjsj 222101|
area forecast discussion
national weather service san juan pr
501 pm ast Sun apr 22 2018
Locally induce showers will continue developing downwind from the
virgin isles and EL yunque as well as over the municipalities of
western puerto rico through this evening. A short wave trough is
forecast to swing by the islands from the west, and tropical
moisture is forecast to reach the islands from the east Monday and
Tuesday. Organize convection can be expected along and to the
west of the cordillera central and near the san juan metro area
especially on Monday afternoon.
Short term This evening through Tuesday...
locally induce showers developed downwind from the virgin isles
into the local waters, but no significant rainfall activity was
detected over land. Sky conditions prevailed mostly sunny to
partly cloudy throughout the day. On the other hand, the terminal
doppler detected shower activity over the municipalities of
eastern and western puerto rico, with the strongest activity over
the west. This activity is expected to last until sunset.
Under a northeasterly wind flow some passing showers can be
expected at times across the u.S. Virgin islands and the northern
and eastern sections of puerto rico overnight. Model guidance
continues to show an upper short wave trough moving from the west
Monday and Tuesday. Environmental conditions look favorable for
the formation of organize convection across the islands,
especially on Monday afternoon, as the upper level feature is
expected to interact with plenty of tropical moisture. Due to
already saturated soils, any prolong period of rainfall could
trigger flooding and mudslides especially along and to the west of
the cordillera central.
For Tuesday, the upper trough will be exiting the region, which
should have less impact in the local instability, but the virgin
islands and local waters could observe a better chance of showers
and thunderstorms especially early Tuesday morning. Then, the
remnants of the tropical moisture combined with diurnal and local
effects could result in another round of showers across the|
western sections of puerto rico during the afternoon.
Long term Previous discussion...
upper level ridge will build across the northeast caribbean
through this period. However, for mid week an increase in low
level moisture is forecast by computer models. As a result, better
chances for shower and thunderstorm development can be expected
Wednesday and Thursday. For the rest of the period, seasonable
weather conditions are expected.
Vfr conds durg prd. Vcsh for tjsj tjbq tist tisx with
shra isold tsra psbl in the vicinity of tjmz tjps with possible
tempo MVFR at tjmz til 22 22z. Isold shra en route btw islands and
ovr the coastal waters durg prd. Sfc winds will be mainly from the e
to ene at about 15-20 kt with occasional gusts... Bcmg 10 kts or less
aft 22 23z.
Mariners should exercise caution across the atlantic waters and
caribbean passages due to seas up to 6feet and winds of 15 to 20
knots. Across the protected waters, mariners can expect seas at
less than 5 feet. A slight increase in winds and seas is expected
across the offshore atlantic overnight through Monday due to a
surface high pressure north of the region and the arrival of a
Preliminary point temps pops
Sju 75 86 75 85 60 60 60 40
stt 76 86 75 86 40 40 40 20
Sju watches warnings advisories
Vi... High rip current risk until 6 pm ast this evening for st croix.
Short term... Cam
long term... .Previous discussion
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|
|MISP4 - 9759938 - Mona Island, PR||0 mi||47 min||81°F||83°F||1014.5 hPa|
|41115 - Rincon, Puerto Rico (181)||40 mi||35 min||81°F||3 ft|
|PTRP4||41 mi||35 min||NE 11 G 18||81°F|
|MGIP4 - 9759110 - Magueyes Islands, PR||48 mi||47 min||SSE 6 G 11||83°F||82°F||1014.1 hPa|
Wind History for Mayaguez, PR(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
Wind History from JMZ (wind in knots)
|1 day ago|
|2 days ago|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Mona Island |
Click for Map
Sun -- 12:33 AM AST Moonset
Sun -- 02:36 AM AST 0.84 feet High Tide
Sun -- 04:43 AM AST 0.81 feet Low Tide
Sun -- 06:10 AM AST Sunrise
Sun -- 06:24 AM AST 0.84 feet High Tide
Sun -- 12:08 PM AST Moonrise
Sun -- 04:53 PM AST -0.05 feet Low Tide
Sun -- 05:46 PM AST First Quarter
Sun -- 06:50 PM AST Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Puerto Real |
Click for Map
Sun -- 12:30 AM AST Moonset
Sun -- 01:48 AM AST 1.18 feet High Tide
Sun -- 06:07 AM AST Sunrise
Sun -- 08:39 AM AST 0.22 feet Low Tide
Sun -- 12:05 PM AST Moonrise
Sun -- 01:32 PM AST 0.61 feet High Tide
Sun -- 05:46 PM AST First Quarter
Sun -- 06:47 PM AST Sunset
Sun -- 07:44 PM AST -0.08 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 (17,4,5,8)(on/off)  Help
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