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 6:43AM||Sunset 5:48PM||Monday December 11, 2017 1:42 AM AST (05:42 UTC)||Moonrise 1:03AM||Moonset 1:31PM||Illumination 47%|
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|AMZ725 Coastal Waters Of Southern Usvi Vieques And Eastern Puerto Rico Out 10 Nm- 801 Pm Ast Sun Dec 10 2017 |
Rest of tonight..Northeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. East swell around 4 feet. Scattered showers.
Monday..Northeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. East swell around 4 feet. Scattered showers.
Monday night..Northeast winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 11 seconds. Isolated showers.
Tuesday..East winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 11 seconds. Isolated showers.
Tuesday night..Southeast winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Scattered showers.
Wednesday..Southeast winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Scattered showers.
Thursday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Isolated showers.
Friday..Northeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. East swell around 4 feet. Scattered showers.
|AMZ700 801 Pm Ast Sun Dec 10 2017 |
Synopsis for puerto rico and the uS. Virgin islands waters... Seas will gradually subside tonight. A surface high pressure across the north central atlantic will maintain moderate easterly trade wind flow across the local waters today. A surface trough will move into the local area, diminishing the local winds.
7 Day Forecast for Marine Location Near Vieques, PRHourly EDIT Help
Area Discussion for - San Juan, PR  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxca62 tjsj 110002|
area forecast discussion
national weather service san juan pr
802 pm ast Sun dec 10 2017
Update Partly cloudy skies across the forecast area with
isolated showers across portions of southwest puerto rico. Gfs
model brings patches of moisture over the area tomorrow and
Tuesday. This moisture along with easterly trade winds could
cause brief showers across puerto rico and the u.S. Virgin islands
tomorrow and Tuesday. The high rip current risk was allowed to
expire at 6 pm due to improving marine conditions.
Aviation Vfr conditions will prevail for the reminder of the
taf period. Shra and vcts are possible across tjsj, tisx and tist
by 11 12z. Sfc winds will prevail out of the east at 10 - 15 kts
with an occasional gust possible around 11 16z.
Marine Seas will start to subside today, but there is still a
small craft advisory for many of the local waters.
Prev discussion issued 313 pm ast Sun dec 10 2017
a cold front will be pushing into the windward passage tonight and
Monday and into hispaniola by Wednesday. Wednesday night will
represent the farthest progress that the front will make this week.
An approaching long wave trough leaving florida will push a
weakening ridge over the local area Monday night. The ridge will
stall just east of the area however holding the activity from the
jet and the associated frontal zone well northwest. Moisture will
increase from around 1.1 inch to around 1.4 inches on Wednesday--but
this is still fairly limited.
Long term... |
strong surface high pressure across the northeastern atlantic will
promote easterly winds to the local islands, although somewhat
light winds on Wednesday and Thursday with patches of moisture
over the area. Then later in the week, another surface high
pressure moves north of the local area, tightening the pressure
gradient and causing breezy conditions for the upcoming weekend.
Given the patches of moisture expected, there many be some brief
showers in the windward side of the islands. The upper levels do
not appear to cause any instability for thunderstorm development.
Aviation...VFR conditions to continue til 10 22z except for brief
cigs vcnty tkpk and tjmz near -shra and ovr SE pr. Shra ending ovr
pr by 11 00z but chc of shra along NE coast of pr and NRN usvi aft
11 06z. Maximum winds 30-40kt btwn fl400-510 til byd 11 18z.
Marine... Winds are diminishing and seas are expected to also
continue falling. Rip current risk should be below high everywhere
by Monday and small craft advisories come down at 2 pm ast today.
Preliminary point temps pops
Sju 77 85 74 85 30 30 30 30
stt 78 85 78 84 30 30 20 20
Sju watches warnings advisories
Short term... 99
long term... .99
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|
|41056||8 mi||42 min||ENE 16 G 19||80°F||4 ft||1014 hPa (-1.6)|
|CLBP4 - 9752235 - Culebra, PR||12 mi||42 min||78°F||82°F||1014.3 hPa (-1.5)|
|YABP4 - 9754228 - Yabucoa Harbor, PR||22 mi||42 min||77°F|
|41052 - South of St. John, Virgin Islands||36 mi||42 min||NE 12 G 14||78°F||4 ft||1012.3 hPa (-1.4)|
|LAMV3||39 mi||42 min||75°F||82°F|
|41053 - San Juan, PR||42 mi||42 min||ENE 14 G 16||81°F||82°F||5 ft||1013.8 hPa (-1.4)|
|SJNP4 - 9755371 - San Juan, PR||42 mi||42 min||82°F||1014.9 hPa (-1.3)|
Wind History for Isabel Segunda, Vieques Island, PR(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|San Juan, Luis Munoz Marin International Airport, PR||36 mi||1.8 hrs||ENE 10||10.00 mi||Partly Cloudy||79°F||73°F||84%||1015.2 hPa|
Wind History from JSJ (wind in knots)
|1 day ago||SE||Calm||SE||E||E||E||SE||E||E|
|2 days ago||SE||E||E||SE||SE||S||SE||SE||E||E||E||E|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Punta Mulas |
Click for Map
Mon -- 01:03 AM AST Moonrise
Mon -- 03:29 AM AST 0.89 feet High Tide
Mon -- 06:43 AM AST Sunrise
Mon -- 09:17 AM AST 0.27 feet Low Tide
Mon -- 01:30 PM AST Moonset
Mon -- 03:31 PM AST 1.00 feet High Tide
Mon -- 05:46 PM AST Sunset
Mon -- 10:02 PM AST 0.09 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Vieques Passage |
Click for Map
Mon -- 01:04 AM AST Moonrise
Mon -- 02:16 AM AST 0.00 knots Slack
Mon -- 05:32 AM AST 0.76 knots Max Flood
Mon -- 06:43 AM AST Sunrise
Mon -- 08:54 AM AST -0.00 knots Slack
Mon -- 11:58 AM AST -0.64 knots Max Ebb
Mon -- 01:31 PM AST Moonset
Mon -- 03:17 PM AST 0.00 knots Slack
Mon -- 05:47 PM AST Sunset
Mon -- 05:54 PM AST 0.43 knots Max Flood
Mon -- 08:31 PM AST -0.00 knots Slack
Mon -- 11:54 PM AST -0.66 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
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 (0,6,7,8)(on/off)  Help
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