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Marine Weather and Tides
Version 3.4 |
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 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. |
| Sunrise 5:45AM | Sunset 7:02PM | Monday June 18, 2018 3:11 AM AST (07:11 UTC) | Moonrise 10:44AM | Moonset 11:41PM | Illumination 24% |  |
Marine Forecasts
EDIT (on/off) Help| AMZ725 Coastal Waters Of Southern Usvi Vieques And Eastern Puerto Rico Out 10 Nm- 925 Pm Ast Sun Jun 17 2018 Rest of tonight..Southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Monday..Southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers. Monday night..Southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers. Tuesday..Southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers. Tuesday night..Southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Numerous showers and isolated Thunderstorms. Wednesday..Southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers. Thursday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers. Friday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Scattered showers. Isolated Thunderstorms. | AMZ700 925 Pm Ast Sun Jun 17 2018 Synopsis for puerto rico and the uS. Virgin islands waters... Surface high pressure located across the northeastern atlantic will continue to promote a light to moderate east to southeasterly wind flow throughout the forecast period. Another tropical wave is forecast to enter the eastern caribbean and move across the forecast area Tuesday through Wednesday, increasing the shower and Thunderstorm activity across the regional waters. |
7 Day Forecast for Marine Location Near Esperanza, PR
Hourly EDIT Helplocation: 18.12, -65.46 debug
Area Discussion for - San Juan, PR
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxca62 tjsj 180130 afdsju area forecast discussion national weather service san juan pr 930 pm ast Sun jun 17 2018 Update Showers overnight... If any... Will be focused across the usvi and the eastern third of puerto rico. Showers and thunderstorms are then expected once again tomorrow afternoon across the western interior and the northwest quadrant of puerto rico. Tropical wave still expected on Tuesday. No changes were introduced to the forecast package at this time, forecast on track. Aviation Vfr at all TAF sites with vcsh at jsj as well as usvi and leeward terminals overnight and tomorrow morning. Shra tsra in and around jmz and jbq and possibly jsj between 18 16-22z. Ese winds at around 10 knots, becoming 10 to 15 with some sea breeze variations aft 18 12z. Marine No change to previous discussion. Seas of 3 to 5 feet are expected across the local waters with easterly winds around 15 knots. An increase in shower and thunder activity is expected early this week as a tropical wave moves across the eastern caribbean. Prev discussion issued 536 pm ast Sun jun 17 2018 synopsis... Broad surface high pressure will continue across the northeastern atlantic for the next several days. A cold front will remain north of the region through mid-week. This will promote a southeasterly wind flow across the local area through at least Wednesday. Upper level trough pattern will establish north and over the region through Tuesday. A tropical wave will move across the eastern caribbean on Tuesday. Normal to above normal temperatures will continue for the next few days. Short term... Today through Tuesday... a weak saharan air layer will continue through Monday across the region. A southeasterly wind flow will prevail during the short term period as surface ridge continues over the azores. This will result in hot temperatures along the coastal areas of the islands. An upper level trough north of the area will aid in the development of afternoon showers and thunderstorms, once again on Monday along the interior and north central portions of puerto rico. On Tuesday, low level moisture increases as a tropical wave moves mainly south of the islands. The wave and favorable upper levels will result in an increase on the areal coverage of showers and thunderstorms across puerto rico and across the caribbean waters. Urban and small stream flooding is expected each afternoon with the thunderstorms as well as periods of frequent lightning. The best chances for showers across the usvi are expected from Monday evening through Tuesday. |
Long term... Wednesday through Monday(from previous discussion)... the potential for shower and thunderstorm activity will continue on Wednesday as lingering moisture left behind the tropical wave will prevail over the area. With the low-level wind flow prevailing from the southeast, the areas that have the highest probability of seeing rainfall activity will be across the northern half of puerto rico. The u.S. Virgin islands should see lesser rainfall than over puerto rico as drier air will be moving in from the east. As the deeper moisture continues to retreat later on Wednesday night, drier air along with some saharan dust will move in across the forecast area. Therefore, for Thursday and Friday, mostly fair weather conditions along with hazier skies are expected across most of the forecast area with limited shower activity developing across northwest pr each afternoon. Model guidance is hinting at another tropical wave moving across the eastern caribbean and spreading deeper moisture into the forecast area later Friday night through the day Saturday. Therefore, the potential exists for an increase in shower and thunderstorm activity across the region during the first half of next weekend. Aviation...VFR at local terminals and en route btw islands. Isold shra ovr coastal waters... Sct lyrs nr fl030... Fl050... Except sct-bkn with aftn shra isold tsra ovr W and NW pr vcnty tjmz tjbq til 17 22z. Sfc wnds fm e-se 10-15 kts with ocnl higher gusts bcmg lgt vrb aft 17 23z. Marine... Seas of 2 to 4 feet along with east to southeast generally between 10 to 15 knots will continue to prevail across the local waters through at least Tuesday. Thunderstorms are possible on Tuesday across the caribbean waters as a tropical wave moves south of the region. A low risk of rip currents will prevail across most of the beaches through the workweek. Preliminary point temps pops Sju 79 90 77 89 0 40 40 60 stt 80 87 80 87 20 50 50 60 Sju watches warnings advisories Pr... None. Vi... None. Am... None. Update... Om aviation... .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 | 41 min | ESE 9.7 G 12 | 82°F | 1016.3 hPa | |||
| CLBP4 - 9752235 - Culebra, PR | 15 mi | 41 min | 81°F | 84°F | 1017.1 hPa | |||
| YABP4 - 9754228 - Yabucoa Harbor, PR | 20 mi | 41 min | 83°F | |||||
| LAMV3 | 41 mi | 41 min | 81°F | 83°F | ||||
| SJNP4 - 9755371 - San Juan, PR | 42 mi | 41 min | 81°F | 84°F | 1017.3 hPa | |||
| JOXP4 - Jobos Bay Reserve, Puerto Rico | 42 mi | 86 min | N 1.9 | 78°F | 1018 hPa | 73°F | ||
| 41053 - San Juan, PR | 42 mi | 41 min | SSE 1.9 G 3.9 | 81°F | 1016.5 hPa | |||
| CHSV3 - 9751364 - Christiansted Harbor, Virgin Islands | 48 mi | 41 min | ENE 2.9 G 4.1 | 80°F | 84°F | |||
| LTBV3 - 9751401 - Lime Tree Bay, VI | 48 mi | 41 min | ESE 5.1 G 9.9 | 81°F | 84°F | 1017.8 hPa |
Wind History for Isabel Segunda, Vieques Island, PR
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Airport Reports
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Tide / Current Tables for Vieques Island, Puerto Rico
EDIT RT Ports Option Weekend mode (on/off) (on/off) Help One Week of Data| Vieques Island Click for Map Mon -- 12:14 AM AST 0.85 feet High Tide Mon -- 05:46 AM AST Sunrise Mon -- 10:44 AM AST Moonrise Mon -- 03:45 PM AST -0.04 feet Low Tide Mon -- 06:59 PM AST Sunset Mon -- 11:40 PM AST Moonset 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 |
| 0.8 | 0.8 | 0.8 | 0.8 | 0.7 | 0.6 | 0.5 | 0.5 | 0.4 | 0.4 | 0.3 | 0.2 | 0.2 | 0.1 | -0 | -0 | -0 | -0 | 0.1 | 0.2 | 0.3 | 0.4 | 0.6 | 0.7 |
Tide / Current Tables for Vieques Passage, Puerto Rico Current
EDIT (on/off) Help One Week of Data| Vieques Passage Click for Map Mon -- 02:16 AM AST 0.76 knots Max Flood Mon -- 05:17 AM AST -0.00 knots Slack Mon -- 05:47 AM AST Sunrise Mon -- 08:48 AM AST -0.99 knots Max Ebb Mon -- 10:45 AM AST Moonrise Mon -- 12:20 PM AST 0.00 knots Slack Mon -- 03:18 PM AST 0.73 knots Max Flood Mon -- 06:30 PM AST -0.00 knots Slack Mon -- 07:00 PM AST Sunset Mon -- 09:19 PM AST -0.59 knots Max Ebb Mon -- 11:41 PM AST Moonset 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 | 0.6 | 0.8 | 0.7 | 0.5 | 0.1 | -0.3 | -0.7 | -0.9 | -1 | -0.8 | -0.5 | -0.1 | 0.3 | 0.6 | 0.7 | 0.7 | 0.5 | 0.2 | -0.2 | -0.4 | -0.6 | -0.5 | -0.4 |
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 (3,6,7,8)
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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. |