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Marine Weather and Tides
Version 3.4 |
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome. 10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name. |
| Sunrise 6:26AM | Sunset 5:47PM | Monday November 12, 2018 9:03 PM AST (01:03 UTC) | Moonrise 10:40AM | Moonset 10:04PM | Illumination 24% |  |
AMZ725 Coastal Waters Of Southern Usvi Vieques And Eastern Puerto Rico Out 10 Nm- 423 Pm Ast Mon Nov 12 2018
.small craft should exercise caution...
.small craft advisory in effect from 8 pm ast this evening through late Wednesday night...
Tonight..Northeast winds 15 to 20 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Dominant period 8 seconds. Northeast swell around 4 feet after midnight. Scattered showers.
Tuesday..East winds 20 to 25 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Dominant period 8 seconds. Northeast swell around 4 feet. Scattered showers through the day. Isolated Thunderstorms in the afternoon.
Tuesday night..East winds 10 to 15 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 8 seconds. Numerous showers and isolated Thunderstorms.
Wednesday..Southeast winds 15 to 20 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Dominant period 8 seconds. East swell around 4 feet. Numerous showers and scattered Thunderstorms.
Wednesday night..Southeast winds 15 to 20 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Dominant period 8 seconds. Northeast swell around 4 feet. Numerous showers and scattered Thunderstorms.
Thursday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 8 seconds. Northeast swell around 4 feet. Isolated Thunderstorms. Numerous showers.
Friday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. Northeast swell 4 to 7 feet. Scattered showers. Isolated Thunderstorms.
Saturday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 12 seconds. Southeast swell 4 to 6 feet. Scattered showers.
.small craft should exercise caution...
.small craft advisory in effect from 8 pm ast this evening through late Wednesday night...
Tonight..Northeast winds 15 to 20 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Dominant period 8 seconds. Northeast swell around 4 feet after midnight. Scattered showers.
Tuesday..East winds 20 to 25 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Dominant period 8 seconds. Northeast swell around 4 feet. Scattered showers through the day. Isolated Thunderstorms in the afternoon.
Tuesday night..East winds 10 to 15 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 8 seconds. Numerous showers and isolated Thunderstorms.
Wednesday..Southeast winds 15 to 20 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Dominant period 8 seconds. East swell around 4 feet. Numerous showers and scattered Thunderstorms.
Wednesday night..Southeast winds 15 to 20 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Dominant period 8 seconds. Northeast swell around 4 feet. Numerous showers and scattered Thunderstorms.
Thursday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 8 seconds. Northeast swell around 4 feet. Isolated Thunderstorms. Numerous showers.
Friday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. Northeast swell 4 to 7 feet. Scattered showers. Isolated Thunderstorms.
Saturday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 12 seconds. Southeast swell 4 to 6 feet. Scattered showers.
AMZ700 423 Pm Ast Mon Nov 12 2018
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure moving over the western atlantic and an approaching tropical wave will result in an increase in winds and seas. Seas will therefore become hazardous beginning this evening and continuing through the end of the work week. Shower and Thunderstorm activity is expected to increase across the regional waters with the passage of the tropical wave.
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure moving over the western atlantic and an approaching tropical wave will result in an increase in winds and seas. Seas will therefore become hazardous beginning this evening and continuing through the end of the work week. Shower and Thunderstorm activity is expected to increase across the regional waters with the passage of the tropical wave.
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 122056 afdsju area forecast discussion national weather service san juan pr 456 pm ast Mon nov 12 2018 Synopsis The presence of abundant low level moisture with favorable upper level dynamics will aid in the development of showers and isolated thunderstorms across the forecast area through the evening hours. Overnight and early morning showers are expected to stream over the atlantic waters into coastal areas of northern and eastern puerto rico and the u.S. Virgin islands. This will be followed by afternoon convection over the local islands on Tuesday. An approaching tropical wave will deteriorate both weather and marine conditions starting late Tuesday night. This weather pattern is expected to continue throughout the workweek. Short term Tonight through Wednesday... showers and isolated thunderstorms will continue to develop and drift west-southwestward over portions of the interior and southwestern puerto rico, as well as downwind from EL yunque and the local islands. This activity is expected to dissipate at around or before sunset. In addition, showers are forecast to continue streaming over the atlantic waters and move over coastal areas of puerto rico and the u.S. Virgin islands through the overnight and early morning hours. The afternoon weather pattern will be similar to today's weather pattern, influenced by local and diurnal effects under a west southwestward wind flow. The national hurricane center continues to monitor a tropical wave located about 200 miles east of the leeward islands, that is producing a large area of showers and thunderstorms. This disturbance has now a 50 and 90 percent formation chance through the next 48 hours and 5 days, respectively. So far, this system is forecast to move westward to west-northwestward for the next several days. However, unfavorable environmental conditions and land interaction will inhibit tropical cyclone formation before it reaches the local area. Regardless of the evolution of this system, model guidance continues to depict a wetter weather pattern across the forecast area by late Tuesday night into Thursday. Significant rainfall accumulations, gusty wind conditions and hazardous marine conditions are expected as the main impacts from this system as it moves across the forecast area. Long term Thursday through Monday... Issued 504 am ast Mon nov 12 2018... the active aforementioned tropical wave located east of the lesser antilles is still forecast to develop and move north of the islands by Thursday based on the most recent guidance from the national hurricane center. There is a slight toss up between both gfs and ECMWF model guidance about how much this system develops, but so far the GFS has initialized fairly well based on present weather pattern and the location of this feature. Most recent guidance from the national hurricane center this feature suggests a 70 percent chance of development in the next 5 days. Regardless of how much this active wave develops during the next few days, expect a much wetter and unstable weather pattern for the forecast areas through at least Thursday or early Friday, as the deep layered trough pattern is to develop and linger across the region through the end of the work week. This expected scenario will provide favorable upper level support with good divergence aloft and extensive pooling of moisture and low level convergence due to a moist and dominant southeasterly wind flow, forecast to continue through the end of the week. By Saturday and through the early part of the following week, a mid to upper level ridge is then forecast to build across the |
region once again. This change in the overall pattern will aid in cutting off and suppressing widespread convective development. In addition, the atlantic surface high pressure ridge is to build north of the region and thus tighten the local pressure gradient. This will lead to increasing easterly trade winds. By then, periods of showers and thunderstorm activity if any, should be limited to the overnight and early morning hours, followed by a more typical limited afternoon convection each day. Somewhat breezier conditions will also be possible during the latter part of the period, therefore daytime afternoon shower activity may be in the form of streamers and quick passing. Aviation...VFR conds are prevailing across all terminal sites with easterly winds of 10 to 15 kt with higher gusts up to 30 kts. Shra iso tsra have started to develop over portions of eastern, interior and western areas of puerto rico, and are affecting terminals tjsj, tjmz and tjbq. This activity is expected to linger until 12 23z. Sfc winds out of the east at 10 to 15 kts, then winds turn to the north at 21 to 29 kft with winds ranging from 30 to 50 kts. Marine... Marine conditions are forecast to deteriorate this evening through the rest of the work week with seas forecast to increase to up to 8 feet, occasionally up to 10 feet. First across the local outer atlantic and caribbean waters, as well as the local passages. Then, spreading into coastal waters and mona passage including portions of the outer caribbean waters later in the week. Precautionary statements and small craft advisories will therefore be in effect for most of the local waters starting this evening and through most of the work week. Preliminary point temps pops Sju 86 78 86 77 50 50 60 60 stt 88 78 88 78 50 50 60 60 Sju watches warnings advisories Pr... High rip current risk through Tuesday afternoon for culebra- northeast-southeast. High rip current risk through Tuesday afternoon for north central-northwest-san juan and vicinity-western interior. High rip current risk from Tuesday morning through Tuesday afternoon for vieques. Vi... High rip current risk through Tuesday afternoon for st croix- st.Thomas... St. John... And adjacent islands. Am... Small craft advisory from 8 pm this evening to 6 pm ast Tuesday for caribbean waters of puerto rico from 10 nm to 17n. Small craft advisory from 6 am Tuesday to 6 pm ast Wednesday for coastal waters of northern puerto rico out 10 nm. Small craft advisory from 8 pm this evening to 6 pm ast Saturday for anegada passage southward to 17n-atlantic waters of puerto rico and usvi from 10 nm to 19.5n. Small craft advisory from 8 pm this evening to 6 am ast Thursday for coastal waters of northern usvi and culebra out 10 nm- coastal waters of southern usvi vieques and eastern puerto rico out 10 nm. Small craft advisory from 6 am Tuesday to 6 am ast Wednesday for coastal waters of northwestern puerto rico out 10 nm-mona passage southward to 17n. Short term... Ds long term... .Icp aviation... Tw |
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 |
| ESPP4 - 9752695 - Esperanza, PR | 2 mi | 33 min | NE 2.9 G 5.1 | 78°F | 84°F | 1014.1 hPa | ||
| 41056 | 10 mi | 33 min | NE 14 G 18 | 81°F | 1013.5 hPa | |||
| CLBP4 - 9752235 - Culebra, PR | 15 mi | 33 min | 81°F | 84°F | 1014.6 hPa | |||
| YABP4 - 9754228 - Yabucoa Harbor, PR | 20 mi | 33 min | 76°F | 72°F | ||||
| CHAV3 - 9751639 - Charlotte Amalie, VI | 32 mi | 33 min | 82°F | 1014.3 hPa | ||||
| 41052 - South of St. John, Virgin Islands | 38 mi | 33 min | ENE 18 G 21 | 83°F | 1012.6 hPa | |||
| LAMV3 | 41 mi | 33 min | 81°F | 84°F | ||||
| SJNP4 - 9755371 - San Juan, PR | 42 mi | 33 min | E 9.9 G 15 | 82°F | 84°F | 1014.8 hPa | ||
| JOXP4 - Jobos Bay Reserve, Puerto Rico | 42 mi | 78 min | E 1.9 | 1015 hPa | ||||
| 41053 - San Juan, PR | 42 mi | 33 min | E 16 G 18 | 83°F | 1013.8 hPa | |||
| CHSV3 - 9751364 - Christiansted Harbor, Virgin Islands | 48 mi | 33 min | NE 6 G 11 | 82°F | 83°F | |||
| LTBV3 - 9751401 - Lime Tree Bay, VI | 48 mi | 33 min | E 5.1 G 12 | 81°F | 83°F | 1014.8 hPa |
Wind History for Isabel Segunda, Vieques Island, PR
(wind in knots) EDIT (on/off) Help| Last 24hr | ||||||||||||||||||||||||
| 1 day ago | ||||||||||||||||||||||||
| 2 days ago |
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 DataTide / Current data from XTide NOT FOR NAVIGATION
Tide / Current Tables for Vieques Passage, Puerto Rico Current
EDIT (on/off) Help One Week of DataVieques Passage
Click for Map
Mon -- 02:33 AM AST 0.49 knots Max Flood
Mon -- 05:34 AM AST -0.00 knots Slack
Mon -- 06:26 AM AST Sunrise
Mon -- 08:08 AM AST -0.37 knots Max Ebb
Mon -- 10:38 AM AST 0.00 knots Slack
Mon -- 10:41 AM AST Moonrise
Mon -- 02:03 PM AST 0.63 knots Max Flood
Mon -- 05:08 PM AST -0.00 knots Slack
Mon -- 05:46 PM AST Sunset
Mon -- 08:46 PM AST -0.84 knots Max Ebb
Mon -- 10:04 PM AST Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 02:33 AM AST 0.49 knots Max Flood
Mon -- 05:34 AM AST -0.00 knots Slack
Mon -- 06:26 AM AST Sunrise
Mon -- 08:08 AM AST -0.37 knots Max Ebb
Mon -- 10:38 AM AST 0.00 knots Slack
Mon -- 10:41 AM AST Moonrise
Mon -- 02:03 PM AST 0.63 knots Max Flood
Mon -- 05:08 PM AST -0.00 knots Slack
Mon -- 05:46 PM AST Sunset
Mon -- 08:46 PM AST -0.84 knots Max Ebb
Mon -- 10:04 PM AST Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
| 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 | 9 pm | 10 pm | 11 pm |
| 0 | 0.3 | 0.5 | 0.5 | 0.4 | 0.1 | -0.1 | -0.3 | -0.4 | -0.3 | -0.2 | 0.1 | 0.4 | 0.5 | 0.6 | 0.6 | 0.4 | 0 | -0.3 | -0.6 | -0.8 | -0.8 | -0.7 | -0.5 |
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 (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. |