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Marine Weather and Tides
Version 3.4 |
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 5:57AM | Sunset 6:43PM | Wednesday April 25, 2018 7:45 PM AST (23:45 UTC) | Moonrise 2:56PM | Moonset 2:58AM | Illumination 81% |  |
Marine Forecasts
EDIT (on/off) Help| AMZ725 Coastal Waters Of Southern Usvi Vieques And Eastern Puerto Rico Out 10 Nm- 343 Pm Ast Wed Apr 25 2018 Tonight..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Scattered showers. Thursday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Northeast swell around 4 feet in the afternoon. Isolated showers. Thursday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Northeast swell around 4 feet in the evening. Isolated showers. Friday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Isolated showers. Friday 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. Saturday..East 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. Isolated showers. Sunday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Scattered showers. Monday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Scattered showers. | AMZ700 343 Pm Ast Wed Apr 25 2018 Synopsis for puerto rico and the uS. Virgin islands waters... A moderate east southeast wind flow will prevail through the weekend then becoming easterly early next week. Showers will increase across the local waterways late night and Thursday with improving conditions on Friday. |
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 252017 afdsju area forecast discussion national weather service san juan pr 417 pm ast Wed apr 25 2018 Synopsis An increase in low level moisture is expected tonight and Thursday, with increasing rain chances tomorrow. A mid to upper level ridge will build over the area late Thursday and prevail across the region through early next week with fair weather and an occasional shower. Short term Tonight through Friday... mostly sunny skies prevailed over the u.S. Virgin islands and puerto rico today with easterly winds ranging from 5 to 15 mph. Some showers were observed over the atlantic waters but other than those isolated showers today has been tranquil. A weakening surface trough near the lesser antilles has pulled low level moisture into the caribbean and north atlantic waters today with the bulk of the moisture expected to reach the u.S. Virgin islands and puerto rico tonight and Thursday morning. As a result an increase in showers with the possibility for isolated thunderstorms is expected on Thursday. Early Friday a strengthening upper and mid level ridge will build across the area and prevail through the weekend with brisk easterly winds of 15 to 20 mph. Drier air and strong trade winds will limit shower development across the area on Friday through the weekend. Long term A mid to upper level ridge will hold across the forecast area through the weekend. This feature is expected to quickly erode early the next workweek as a broad upper level trough establishes across the western atlantic and into the eastern caribbean. The aforementioned trough will promote moisture advection across the eastern caribbean Wednesday onwards. If the long term forecast holds, expect seasonably conditions |
Saturday through Tuesday with locally induced afternoon showers and a few isolated thunderstorms across the western interior and west areas of puerto rico each day. The chance for showers and thunderstorms are expected to increase by midweek under deep tropical moisture and plenty of upper level dynamics associated with the upper level trough. Aviation MainlyVFR conditions are expected to prevail early in the forecast period. Shra expected to increase from the east across the usvi terminals by 26 06z then by 26 12z across the eastern pr terminals. This will be followed by tsra developing after 16z across the interior and western pr. Tempo MVFR to brief ifr possible with afternoon activity at tjmz tjbq. Sct-bkn CIGS btw fl030-fl060 and mtns obscd expected across the pr terminals on Thursday. Winds will continue from the ese blo fl100 at 8-18 kt with sea breeze variations at the northern and western terminals aft 26 14z. Marine Seas are expected to range from 3 to 4 feet across the coastal waters while the offshore waters and passages will be near 3 to 5 feet. East southeast winds 10 to 20 kts will prevail over the next several days. There is a moderate risk of rip currents across the northern beaches of puerto rico today. Preliminary point temps pops Sju 76 89 76 89 20 40 20 20 stt 76 87 76 87 40 20 20 20 Sju watches warnings advisories Pr... None. Vi... None. Am... None. Short term... Tw long term... .Om |
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 | 46 min | E 9.7 G 12 | 80°F | 3 ft | 1015.1 hPa (+0.6) | ||
| CLBP4 - 9752235 - Culebra, PR | 17 mi | 46 min | 82°F | 82°F | 1015.2 hPa (+0.6) | |||
| YABP4 - 9754228 - Yabucoa Harbor, PR | 22 mi | 46 min | 82°F | |||||
| SJNP4 - 9755371 - San Juan, PR | 27 mi | 46 min | 82°F | 81°F | 1015.1 hPa (+1.2) | |||
| JOXP4 - Jobos Bay Reserve, Puerto Rico | 41 mi | 61 min | ENE 5.1 | 79°F | 1015 hPa | 70°F | ||
| 41052 - South of St. John, Virgin Islands | 46 mi | 46 min | E 12 G 14 | 81°F | 1014.1 hPa (+0.7) | |||
| LAMV3 | 48 mi | 46 min | 79°F | 83°F |
Wind History for Fajardo, PR
(wind in knots) EDIT (on/off) Help| Last 24hr | ||||||||||||||||||||||||
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| 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 | 50 min | E 9 | 10.00 mi | Partly Cloudy | 81°F | 72°F | 74% | 1015 hPa |
Wind History from JSJ (wind in knots)
| 8 PM | 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 | |
| Last 24hr | E | E | E | E | E | SE | SE | E | S | Calm | Calm | E | E | E | E | NE | E G20 | NE | E | SE G15 | SE | S G15 | SE G16 | E |
| 1 day ago | E | E | E | E | SE | Calm | Calm | E | Calm | SE | E | E | E | E | E | E G23 | E G25 | E | E G21 | NE | E | E | E | E |
| 2 days ago | E | E | SE | E | E | E | Calm | Calm | Calm | Calm | Calm | Calm | Calm | E | E | NE | E | NE | E | E | E | 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 Wed -- 02:58 AM AST Moonset Wed -- 05:07 AM AST 1.44 feet High Tide Wed -- 05:58 AM AST Sunrise Wed -- 11:30 AM AST 0.18 feet Low Tide Wed -- 02:56 PM AST Moonrise Wed -- 05:27 PM AST 1.15 feet High Tide Wed -- 06:42 PM AST Sunset Wed -- 11:31 PM AST 0.08 feet Low 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 |
| 0.2 | 0.5 | 0.8 | 1.1 | 1.3 | 1.4 | 1.4 | 1.2 | 0.9 | 0.6 | 0.3 | 0.2 | 0.2 | 0.3 | 0.5 | 0.8 | 1 | 1.1 | 1.1 | 1 | 0.8 | 0.5 | 0.2 | 0.1 |
Tide / Current Tables for Vieques Passage, Puerto Rico Current
EDIT (on/off) Help One Week of Data| Vieques Passage Click for Map Wed -- 12:57 AM AST -0.59 knots Max Ebb Wed -- 02:57 AM AST Moonset Wed -- 04:00 AM AST 0.00 knots Slack Wed -- 05:58 AM AST Sunrise Wed -- 07:03 AM AST 0.59 knots Max Flood Wed -- 10:00 AM AST -0.00 knots Slack Wed -- 01:21 PM AST -0.73 knots Max Ebb Wed -- 02:56 PM AST Moonrise Wed -- 04:38 PM AST 0.00 knots Slack Wed -- 06:42 PM AST Sunset Wed -- 07:44 PM AST 0.67 knots Max Flood Wed -- 10:52 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 |
| -0.5 | -0.6 | -0.5 | -0.3 | -0 | 0.3 | 0.5 | 0.6 | 0.5 | 0.3 | 0 | -0.3 | -0.6 | -0.7 | -0.7 | -0.5 | -0.2 | 0.1 | 0.4 | 0.6 | 0.7 | 0.5 | 0.3 | -0 |
Weather Map and Satellite Images
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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.
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Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for (19,4,5,8)
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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. |