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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 5:46AM | Sunset 6:51PM | Sunday May 19, 2019 7:03 AM AST (11:03 UTC) | Moonrise 7:46PM | Moonset 6:25AM | Illumination 100% |  |
AMZ725 Coastal Waters Of Southern Usvi Vieques And Eastern Puerto Rico Out 10 Nm- 345 Am Ast Sun May 19 2019
Today..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Scattered showers.
Tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 11 seconds. Scattered showers.
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..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers.
Tuesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers.
Wednesday..East 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.
Thursday..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 8 seconds. Isolated Thunderstorms. Numerous showers.
Today..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Scattered showers.
Tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 11 seconds. Scattered showers.
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..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers.
Tuesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers.
Wednesday..East 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.
Thursday..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 8 seconds. Isolated Thunderstorms. Numerous showers.
AMZ700 345 Am Ast Sun May 19 2019
Synopsis for puerto rico and the uS. Virgin islands waters... Surface high pressure over the east-central atlantic and a lingering frontal boundary to the north will continue to promote a light to moderate east to east-southeast wind flow across the region through early next week. This will continue to result in fairly tranquil seas across the regional waters. However, isolated afternoon Thunderstorms are expected to continue over the northwestern coastal waters of puerto rico through the evening hours.
Synopsis for puerto rico and the uS. Virgin islands waters... Surface high pressure over the east-central atlantic and a lingering frontal boundary to the north will continue to promote a light to moderate east to east-southeast wind flow across the region through early next week. This will continue to result in fairly tranquil seas across the regional waters. However, isolated afternoon Thunderstorms are expected to continue over the northwestern coastal waters of puerto rico through the evening hours.
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 190915 afdsju area forecast discussion national weather service san juan pr 515 am ast Sun may 19 2019 Synopsis A surge in low level moisture will increase showers across the usvi and eastern pr later today and through the overnight hours. Showers and thunderstorms are expected each afternoon mainly across the northwest quadrant of puerto rico for the next several days. Elsewhere, scattered showers are possible and isolated thunderstorms can not be ruled out. An upper level trough will continue to approach the forecast area from the northwest and move just north of the region by Thursday. Light to moderate southeasterly trades will continue across the region through next week. Short term Sunday through Tuesday... a mid to upper-level trough currently northwest of puerto rico will continue to move to the east over the next several days. As the mid to upper-level trough moves closer it will weaken the mid to upper- level ridge, and cause the ridges to gradually move to the east. At the low-levels a surface high over the eastern atlantic and trough 350 miles north of puerto rico will induce an east to southeast winds over the region. Also, an increase low-level moisture over the next several days across puerto rico and the local waters. An increase in showers and isolated thunderstorms are forecast to develop across northwestern areas of puerto rico. As a result of significant surface heating combined with local and diurnal effects. In addition, due to proximity of the mid to upper-level trough and sub-tropical jet a slight increase in upper-level divergence is expected mainly across northwestern areas of puerto rico during the afternoon. Therefore, during the rest of of the short-term period showers will mature to thunderstorms across interior and western areas of puerto rico. These showers could cause urban and small stream flooding and ponding of water on roadways. Elsewhere, isolated to scattered showers are possible across the u.S. Virgin islands, interior, and eastern areas of puerto rico during the early morning and afternoon. Long term Wednesday through Sunday... |
a mid to upper level trough is forecast to move from the western atlantic and over the northeastern caribbean between Wednesday and Thursday. This will provide upper level support for the development of showers and thunderstorms across pr and portions of the usvi. Precipitable water content is forecast to peak during this period between 1.75-2.00 inches, therefore the potential for flooding rains will be high. Another short wave trough is forecast to move just northeast of the region during the weekend. This will continue to provide divergence aloft to support afternoon convection. At lower levels, the absence of the trade wind cap and light southerly steering winds will allow for tropical moisture to pool over the region. Induced perturbations across the eastern caribbean in combination with trough pattern aloft will increase the potential for shower activity with possible thunderstorms across the caribbean waters and across the usvi eastern sections of pr late in the weekend. Aviation Vfr conds expected through the forecast period with vcsh vcts at tjmz and tjbq by 19 18z. Then shra vcts should end by 20 01z with sct to bkn skies. Winds will be out of the east to southeast at 10 to 15 kts with higher gusts possible. Marine Seas are expected to range between 3-5 feet in general with the highest seas expected across the atlantic waters. East to southeast winds will prevail between 5-15 kts with sea breeze influences after 10 am each day. A moderate risk of rip currents will continue for the northern beaches of puerto rico and st. Thomas. Preliminary point temps pops Sju 90 78 89 77 30 40 30 30 stt 86 77 86 77 40 30 30 50 Sju watches warnings advisories Pr... None. Vi... None. Am... None. Short term... Tw long term... .Ds |
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 | E 6 G 9.9 | 1015.5 hPa | ||||
| 41056 | 10 mi | 33 min | E 12 G 14 | 80°F | 1014.3 hPa | |||
| CLBP4 - 9752235 - Culebra, PR | 15 mi | 33 min | 80°F | 83°F | 1015.6 hPa | |||
| YABP4 - 9754228 - Yabucoa Harbor, PR | 20 mi | 33 min | 83°F | 74°F | ||||
| CHAV3 - 9751639 - Charlotte Amalie, VI | 32 mi | 33 min | 80°F | 1015.3 hPa | ||||
| 41052 - South of St. John, Virgin Islands | 38 mi | 33 min | E 12 G 14 | 81°F | 1014.3 hPa | |||
| LAMV3 | 41 mi | 33 min | 80°F | 82°F | ||||
| 41053 - San Juan, PR | 42 mi | 33 min | SSE 3.9 G 5.8 | 80°F | 1014.4 hPa | |||
| JOXP4 - Jobos Bay Reserve, Puerto Rico | 42 mi | 78 min | N 2.9 | 76°F | 1016 hPa | 71°F | ||
| SJNP4 - 9755371 - San Juan, PR | 42 mi | 33 min | ESE 4.1 G 4.1 | 79°F | 82°F | 1015.3 hPa | ||
| CHSV3 - 9751364 - Christiansted Harbor, Virgin Islands | 48 mi | 33 min | E 1.9 G 4.1 | 79°F | 82°F | 1014.8 hPa | ||
| LTBV3 - 9751401 - Lime Tree Bay, VI | 48 mi | 33 min | SE 5.1 G 8.9 | 81°F | 84°F | 1015.5 hPa |
Wind History for Esperanza, Vieques Island, PR
(wind in knots) EDIT (on/off) Help| 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 | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | |
| Last 24hr | SE | SE | E G10 | SE G13 | SE G14 | SE G14 | SE G13 | SE | SE | SE G14 | E G12 | E G11 | E G10 | E G11 | E G10 | NE G7 | E G7 | NE | NE | E | E G10 | E G11 | E G9 | E G7 |
| 1 day ago | SE G11 | SE G12 | SE | SE G14 | SE | SE | SE | SE | SE | SE | SE G14 | E G11 | E G10 | E G7 | E | E G8 | E G9 | E G7 | E G10 | E G12 | E G14 | E G11 | SE G13 | SE G12 |
| 2 days ago | SE | SE | SE | SE | SE G10 | SE | SE | SE | SE | SE | SE | SE | E G9 | E | SE | E G8 | E G10 | E G10 | E G8 | E | E | SE | E G9 | SE G13 |
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 | 36 mi | 67 min | N 0 | 10.00 mi | A Few Clouds | 78°F | 71°F | 79% | 1014.9 hPa |
Wind History from JSJ (wind in knots)
| 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 | 12 AM | 1 AM | 2 AM | 3 AM | 4 AM | 5 AM | 6 AM | |
| Last 24hr | SE | E | E | E | NE | E | E | NE | E | NE | E | E | E | E | E | E | E | E | E | E | E | E | S | Calm |
| 1 day ago | Calm | E | E | NE | NE | NE | NE | NE | NE | E G21 | NE | E | E | E | E | E | E | E | E | E | SE | E | SE | |
| 2 days ago | Calm | Calm | Calm | N | NE | NE | NE | E | E | NE | NE | E | E | SE | S | S | E | E | E | Calm | Calm | Calm | Calm |
Tide / Current Tables for Puerto Ferro, Isla de Vieques, Puerto Rico
EDIT Weekend mode (on/off) (on/off) Help One Week of DataPuerto Ferro
Click for Map
Sun -- 04:01 AM AST 0.72 feet Low Tide
Sun -- 05:20 AM AST 0.75 feet High Tide
Sun -- 05:47 AM AST Sunrise
Sun -- 06:25 AM AST Moonset
Sun -- 02:53 PM AST -0.17 feet Low Tide
Sun -- 06:48 PM AST Sunset
Sun -- 07:44 PM AST Moonrise
Sun -- 09:43 PM AST 0.95 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 04:01 AM AST 0.72 feet Low Tide
Sun -- 05:20 AM AST 0.75 feet High Tide
Sun -- 05:47 AM AST Sunrise
Sun -- 06:25 AM AST Moonset
Sun -- 02:53 PM AST -0.17 feet Low Tide
Sun -- 06:48 PM AST Sunset
Sun -- 07:44 PM AST Moonrise
Sun -- 09:43 PM AST 0.95 feet High Tide
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 |
| 0.8 | 0.8 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.6 | 0.5 | 0.4 | 0.2 | 0.1 | -0.1 | -0.1 | -0.2 | -0.1 | 0.1 | 0.3 | 0.6 | 0.8 | 0.9 | 0.9 | 0.9 |
Tide / Current Tables for Vieques Passage, Puerto Rico Current (2)
EDIT (on/off) Help One Week of DataVieques Passage
Click for Map
Sun -- 02:02 AM AST -0.00 knots Slack
Sun -- 05:33 AM AST -1.02 knots Max Ebb
Sun -- 05:47 AM AST Sunrise
Sun -- 06:26 AM AST Moonset
Sun -- 09:19 AM AST 0.00 knots Slack
Sun -- 11:54 AM AST 0.53 knots Max Flood
Sun -- 02:45 PM AST -0.00 knots Slack
Sun -- 05:28 PM AST -0.49 knots Max Ebb
Sun -- 06:49 PM AST Sunset
Sun -- 07:45 PM AST Moonrise
Sun -- 08:01 PM AST 0.00 knots Slack
Sun -- 11:34 PM AST 0.86 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Sun -- 02:02 AM AST -0.00 knots Slack
Sun -- 05:33 AM AST -1.02 knots Max Ebb
Sun -- 05:47 AM AST Sunrise
Sun -- 06:26 AM AST Moonset
Sun -- 09:19 AM AST 0.00 knots Slack
Sun -- 11:54 AM AST 0.53 knots Max Flood
Sun -- 02:45 PM AST -0.00 knots Slack
Sun -- 05:28 PM AST -0.49 knots Max Ebb
Sun -- 06:49 PM AST Sunset
Sun -- 07:45 PM AST Moonrise
Sun -- 08:01 PM AST 0.00 knots Slack
Sun -- 11:34 PM AST 0.86 knots Max Flood
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 |
| 0.8 | 0.4 | 0 | -0.4 | -0.8 | -1 | -1 | -0.8 | -0.5 | -0.1 | 0.2 | 0.5 | 0.5 | 0.4 | 0.2 | -0.1 | -0.3 | -0.5 | -0.5 | -0.3 | -0 | 0.3 | 0.6 | 0.8 |
Weather Map and Satellite Images
(on/off) HelpWeather Map
GOES Local Image of 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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for (7,2,3,4)
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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. |