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Marine Weather and Tides
Version 3.4 |
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 6:18AM | Sunset 5:55PM | Monday October 23, 2017 8:10 PM AST (00:10 UTC) | Moonrise 9:27AM | Moonset 8:58PM | Illumination 15% |  |
Marine Forecasts
EDIT (on/off) Help| AMZ725 Coastal Waters Of Southern Usvi Vieques And Eastern Puerto Rico Out 10 Nm- 333 Pm Ast Mon Oct 23 2017 Tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Scattered showers. Tuesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers. Tuesday night..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Scattered showers. Wednesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Scattered showers. Wednesday night..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Scattered showers. Thursday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Scattered showers. Friday..Northeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 11 seconds. East swell around 4 feet. Scattered showers. Saturday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 11 seconds. Scattered showers. | AMZ700 333 Pm Ast Mon Oct 23 2017 Synopsis for puerto rico and the uS. Virgin islands waters... Surface high pressure will continue north of the area to promote moderate to locally fresh trade winds through at least midweek. A gentle to moderate east southeast wind flow is then expected by Wednesday and into the end of the work week. |
7 Day Forecast for Marine Location Near Fajardo, PR
Hourly EDIT Helplocation: 18.33, -65.63 debug
Area Discussion for - San Juan, PR
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxca62 tjsj 231953 afdsju area forecast discussion national weather service san juan pr 353 pm ast Mon oct 23 2017 Synopsis Strong surface high pressure will remain anchored across the west and central atlantic to maintain a moderate east to southeast trade wind flow through the end of the work week. A weak tropical wave is forecast to enter and move across the eastern caribbean by mid week. A low to mid level trough will approach the region during the weekend. Short term Tonight through Wednesday... modest low level moisture and dry air aloft favoring strong morning insolation coupled with low 500 mb temperatures create an unstable atmosphere for afternoon thunderstorms today and Tuesday. Convection will die shortly after sunset each day. The northerly upper level jet over puerto rico around an upper level low just north of the leeward islands will also increase ventilation where convergence divergence remains neutral. The low will move southeast into the windward islands Wednesday and the jet will shift with it, but better moisture at most levels will increase showers and thunderstorms over the area then. Easterly winds at the surface will shift to east southeast midday on Wednesday and shower and thunderstorms will then focus more in northwest puerto rico. The u.S. Virgin islands will continue to see isolated showers and streamers downstream from the islands. Long term Thursday through Tuesday... |
an upper level ridge will remain across the local area through the weekend. However, at lower level, an increase in moisture is expected Saturday and Sunday as a low to mid level trough moves through the region. By early next week, the upper ridge will be eroded by an upper level trough which will retrograde west across the local region. Aviation MostlyVFR conditions expected across all terminals throughout the forecast period, however tsra ovr WRN pr will bring MVFR ifr in lwr CIGS vsbys and some mtn obscurations. E winds of 10- 15 kt excpt for sea breeze influences diminishing below 12 kt after 23 00z. Shra dvlpg aft 24 06z in easterly flow and will move onshore in ERN pr and over usvi. MAX winds north 50 kt nr fl410 incrg to 70 kt by 24 12z. Marine Seas up to 5 feet and winds up to 15 knots are expected across the coastal waters. Preliminary point temps pops Sju 77 88 76 88 40 20 30 30 stt 77 87 78 87 20 10 30 30 Sju watches warnings advisories Pr... None. Vi... None. Am... None. Short term... Ws long term... .Fc |
Weather Reporting Stations
EDIT (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 | 10 mi | 70 min | ENE 12 G 14 | 82°F | 3 ft | 1013.2 hPa (+0.0) | ||
| CLBP4 - 9752235 - Culebra, PR | 17 mi | 40 min | 82°F | 85°F | 1014 hPa | |||
| YABP4 - 9754228 - Yabucoa Harbor, PR | 22 mi | 40 min | 84°F | |||||
| 41053 - San Juan, PR | 27 mi | 40 min | E 12 G 16 | 83°F | 1013 hPa | |||
| SJNP4 - 9755371 - San Juan, PR | 27 mi | 40 min | 84°F | 1014 hPa | ||||
| 41052 - South of St. John, Virgin Islands | 46 mi | 40 min | ENE 14 G 18 | 83°F | 1011.9 hPa | |||
| LAMV3 | 48 mi | 40 min | 81°F | 84°F |
Wind History for Fajardo, PR
(wind in knots) EDIT (on/off) Help| Last 24hr | ||||||||||||||||||||||||
| 1 day ago | ||||||||||||||||||||||||
| 2 days ago |
Airport Reports
EDIT (on/off) Help Click EDIT to display multiple airports| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| San Juan, Luis Munoz Marin International Airport, PR | 21 mi | 74 min | E 11 | 10.00 mi | Partly Cloudy | 82°F | 75°F | 79% | 1013.6 hPa |
Wind History from JSJ (wind in knots)
| 9 PM | 10 PM | 11 PM | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | 1 PM | 2 PM | 3 PM | 4 PM | 5 PM | 6 PM | 7 PM | 8 PM | |
| Last 24hr | E | E | E | E | E | SE | E | SE | E G15 | SE | S | SE | NE | E | E | NE G21 | E | E | E | NE G22 | E | E | E | E |
| 1 day ago | E | E | SE | SE | E | E | SE | Calm | SE | Calm | Calm | SE | E | E | E G20 | NE | NE | E G23 | NE | NE | NE | E | E | E |
| 2 days ago | E G16 | E | SE | SE | Calm | Calm | Calm | Calm | Calm | E G23 | E | E | E | E | E | E | E | E G22 | E | E | NE | E | E | E |
Tide / Current Tables for Playa de Fajardo, Puerto Rico
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| Playa de Fajardo Click for Map Mon -- 04:17 AM AST 0.24 feet Low Tide Mon -- 06:18 AM AST Sunrise Mon -- 09:26 AM AST Moonrise Mon -- 11:26 AM AST 1.78 feet High Tide Mon -- 05:54 PM AST Sunset Mon -- 06:03 PM AST 0.62 feet Low Tide Mon -- 08:57 PM AST Moonset Mon -- 10:57 PM AST 1.07 feet High Tide Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 1 | 0.8 | 0.5 | 0.3 | 0.2 | 0.3 | 0.4 | 0.7 | 1.1 | 1.4 | 1.6 | 1.8 | 1.8 | 1.6 | 1.4 | 1.1 | 0.8 | 0.7 | 0.6 | 0.7 | 0.8 | 0.9 | 1 | 1.1 |
Tide / Current Tables for Vieques Passage, Puerto Rico Current
EDIT (on/off) Help One Week of Data| Vieques Passage Click for Map Mon -- 01:31 AM AST 0.47 knots Max Flood Mon -- 04:24 AM AST -0.00 knots Slack Mon -- 06:18 AM AST Sunrise Mon -- 07:09 AM AST -0.44 knots Max Ebb Mon -- 09:26 AM AST Moonrise Mon -- 09:47 AM AST 0.00 knots Slack Mon -- 01:12 PM AST 0.68 knots Max Flood Mon -- 04:21 PM AST -0.00 knots Slack Mon -- 05:54 PM AST Sunset Mon -- 07:52 PM AST -0.83 knots Max Ebb Mon -- 08:58 PM AST Moonset Mon -- 11:35 PM AST 0.00 knots Slack Tide / Current data from XTide NOT FOR NAVIGATION |
| 12am | 1am | 2am | 3am | 4am | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm | 10pm | 11pm |
| 0.3 | 0.4 | 0.5 | 0.3 | 0.1 | -0.1 | -0.3 | -0.4 | -0.4 | -0.2 | 0.1 | 0.3 | 0.6 | 0.7 | 0.6 | 0.4 | 0.1 | -0.2 | -0.6 | -0.8 | -0.8 | -0.7 | -0.5 | -0.2 |
Weather Map and Satellite Images
(on/off) HelpWeather Map | IR Satellite Image from GEOS GOES Local Image of Puerto Rico EDIT  |
Wind Forecast for (20,4,5,8)
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Ground Weather Radar Station Puerto Rico,Virgin Islands
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Disclaimer: 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. |