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Marine Weather and Tides
Version 3.4 |
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen |
| Sunrise 6:05AM | Sunset 6:48PM | Monday August 19, 2019 12:13 PM AST (16:13 UTC) | Moonrise 9:38PM | Moonset 9:17AM | Illumination 83% |  |
AMZ732 Caribbean Waters Of Puerto Rico From 10 Nm To 17n- 1011 Am Ast Mon Aug 19 2019
Rest of today..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Numerous showers and isolated Thunderstorms.
Tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers in the evening. Isolated Thunderstorms through the night.
Tuesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 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 10 seconds. Scattered showers.
Wednesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Scattered showers.
Thursday..East 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.
Friday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. East swell around 4 feet. Isolated showers.
Rest of today..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Numerous showers and isolated Thunderstorms.
Tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers in the evening. Isolated Thunderstorms through the night.
Tuesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 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 10 seconds. Scattered showers.
Wednesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Scattered showers.
Thursday..East 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.
Friday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. East swell around 4 feet. Isolated showers.
AMZ700 1011 Am Ast Mon Aug 19 2019
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure centered across the north central atlantic will maintain moderate to fresh east winds across the local waters. Tropical moisture associated with a tropical wave will continue to move across the area, increasing the potential for showers and Thunderstorm development through at least Tuesday.
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure centered across the north central atlantic will maintain moderate to fresh east winds across the local waters. Tropical moisture associated with a tropical wave will continue to move across the area, increasing the potential for showers and Thunderstorm development through at least Tuesday.
7 Day Forecast for Marine Location Near El Negro, PR
Hourly EDIT HelpArea Discussion for - San Juan, PR
(on/off) Help NOTE: mouseover dotted underlined text for definition| Fxca62 tjsj 191404 afdsju area forecast discussion national weather service san juan pr 1004 am ast Mon aug 19 2019 Update No changes were made to the inherited forecast. A tropical wave will continue to move across the region today, resulting in shower and thunderstorm activity. The latest visible satellite imagery shows areas of clearing over sections of the main island of puerto rico, which should allow for diurnal heating to occur. In addition, the potential for urban and small stream flooding and mudslides in areas of steep terrain is higher today due to the previous rainfall accumulation, especially across the interior and northwestern puerto rico. Additional activity is also possible across the san juan metro area. Aviation Vcts are expected tjsj tjps tist tisx through most of the forecast period. Tempo due to thunderstorms activity is expected this afternoon for tjsj tjmz tjbq, which could result in MVFR and brief ifr conditions. Vcsh are expected for tncm tkpk for the rest of the day. Marine Seas between two to five feet are expected to continue with winds out of the east at 10 to 15 knots. Marine conditions will become hazardous quickly in areas of heavy rain and thunderstorms. There is a moderate risk of rip currents for the northern, southwestern and southeastern coast of puerto rico, as well as for some beaches along vieques, culebra, and st. Croix in the u.S. Virgin islands. Prev discussion issued 512 am ast Mon aug 19 2019 synopsis... A departing tropical wave and associated plume of moisture will continue to affect the local islands and waters through at least Tuesday, resulting in a higher potential for shower and thunderstorms activity and a threat for urban and small stream flooding. Relatively tranquil conditions with the potential for locally induced showers and isolated thunderstorms are expected Wednesday through Friday. An elongated area of low-level moisture ahead of wind surge and a passing tropical wave are expected to increase the potential for shower and thunderstorm activity on Friday into Saturday and Monday, respectively. Short term... Today through Wednesday... for today, model guidance continues to suggest a wet and unstable weather pattern with high precipitable water content over the region but particularly over the eastern half of the forecast area and across the regional waters. This will result in flooding rains across the usvi and eastern sections of pr. The interior and western sections of pr should receive similar rainfall amounts during the afternoon due to the presence of mid to upper level clouds. However, if skies clear somewhat and allow for daytime heating, higher rainfall amounts are possible with any afternoon convection over western pr. Due to saturated soils from yesterday's rainfall, flash flooding as well as mudslides can not be ruled out with any heavy showers. On Tuesday, guidance has shown a downward trend of the lingering |
tropical moisture and the ECMWF for example brings drier air at 700mb overnight, while the GFS keeps the drier air at this level south of the forecast area during the same time. Both models agree on a wind shift from the northeast and the best moisture north of the region through Tuesday evening. Having said that, modified previous forecast to keep the best chances of rain along the cordillera central and west southwest pr in possible strong diurnal afternoon convection. By Wednesday, a drier air mass will promote more stable conditions across the region and shower activity will be confined to the west coast of pr. Long term... Thursday through Monday... a migrating surface high pressure moving westward across the north central atlantic will maintain a moderate to locally fresh east to southeast wind flow across the region. Relatively tranquil weather conditions are forecast on Thursday and continuing through Friday evening. However, patches of low-level moisture will bring showers to the us virgin islands and puerto rico during the overnight and early morning hours. Then, lingering moisture supported by diurnal heating and local effects will trigger locally induced showers and thunderstorms along the interior and over portions of northwestern puerto rico each afternoon. By late Friday night through Sunday morning, a wind surge ahead of a tropical wave and south of a developing surface high will transport an elongated area of low-level moisture across the region, increasing the potential for shower and thunderstorm activity. Weather conditions are to briefly improve Sunday through Monday, but moisture advection from a passing tropical wave will once again increase the potential for shower and thunderstorm activity by Monday afternoon. Aviation... Tempo MVFR conditions are expected through the day across tist tisx tjsj tjbq tjmz due to shra tsra. Vcts vcsh is expected across the rest of the terminals. Mtn tops obscd across east pr through much of the forecast period and over the interior and west pr during the afternoon hours. Tempo ifr conds are possible at tjmz tjbq btw 17z-21z. Winds are expected to prevail from the east- southeast at 10-15 kt with sea breeze variations after 14z. Marine... Tranquil marine conditions with seas up to 5 feet and east winds up to 15 knots are expected across the regional waters today. A tropical wave will continue to move across the area, increasing the potential for showers and thunderstorm development through at least Tuesday. There is a moderate risk of rip currents for beaches along the north and south coast of puerto rico, as well as culebrita in culebra and cramer park in saint croix. A low risk of rip currents will prevail elsewhere. Preliminary point temps pops Sju 87 79 87 78 50 50 40 30 stt 88 79 88 78 70 60 60 30 Sju watches warnings advisories Pr... None. Vi... None. Am... None. Short term... Erg long term... .Cam |
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 |
| YABP4 - 9754228 - Yabucoa Harbor, PR | 4 mi | 56 min | 88°F | 76°F | ||||
| ESPP4 - 9752695 - Esperanza, PR | 19 mi | 56 min | NE 1.9 G 2.9 | 82°F | 85°F | 1018.3 hPa | ||
| JOXP4 - Jobos Bay Reserve, Puerto Rico | 23 mi | 89 min | ENE 4.1 | 92°F | 1019 hPa | 76°F | ||
| CLBP4 - 9752235 - Culebra, PR | 34 mi | 62 min | 91°F | 86°F | 1018 hPa | |||
| SJNP4 - 9755371 - San Juan, PR | 36 mi | 56 min | ENE 8.9 G 12 | 84°F | 85°F | 1017.9 hPa | ||
| 42085 - Southeast of Ponce, PR | 40 mi | 74 min | E 12 G 16 | 84°F | 3 ft | 1017 hPa (+1.4) |
Wind History for Yabucoa Harbor, 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. Follow links for more data.| Airport | Dist | Age | Wind kt | Visibility | Sky/Weather | Temp | DewPt | Humidity | Pressure |
| San Juan, Luis Munoz Marin International Airport, PR | 32 mi | 2.3 hrs | E 11 | 10.00 mi | Partly Cloudy | 85°F | 78°F | 80% | 1018 hPa |
Link to 5 minute data for TJSJ
Wind History from JSJ (wind in knots)
| 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 | 7 AM | 8 AM | 9 AM | 10 AM | 11 AM | 12 PM | |
| Last 24hr | NE G24 | NE | NE G24 | E G23 | E | E | E | E | E | E | E | E | Calm | E | E | E | E | SE | NE G20 | |||||
| 1 day ago | E | E | E | W | E | Calm | W | Calm | Calm | Calm | Calm | Calm | Calm | SW | SE | Calm | SE | Calm | SE | E | E | E | E | |
| 2 days ago | NE | NE | NE | NE G21 | NE | NE G27 | E | E | E | NE | NE | E | SE | Calm | SE G14 | S | Calm | E | E | NE | SE |
Tide / Current Tables for Puerto Maunabo, Puerto Rico
EDIT Weekend mode (on/off) (on/off) Help One Week of DataPuerto Maunabo
Click for Map
Mon -- 03:05 AM AST 0.39 feet Low Tide
Mon -- 06:06 AM AST Sunrise
Mon -- 09:18 AM AST Moonset
Mon -- 10:53 AM AST 0.57 feet High Tide
Mon -- 02:47 PM AST 0.31 feet Low Tide
Mon -- 06:47 PM AST Sunset
Mon -- 09:37 PM AST Moonrise
Mon -- 11:34 PM AST 0.63 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 03:05 AM AST 0.39 feet Low Tide
Mon -- 06:06 AM AST Sunrise
Mon -- 09:18 AM AST Moonset
Mon -- 10:53 AM AST 0.57 feet High Tide
Mon -- 02:47 PM AST 0.31 feet Low Tide
Mon -- 06:47 PM AST Sunset
Mon -- 09:37 PM AST Moonrise
Mon -- 11:34 PM AST 0.63 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 |
| 0.6 | 0.5 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.5 | 0.5 | 0.5 | 0.6 | 0.6 | 0.5 | 0.4 | 0.3 | 0.3 | 0.3 | 0.4 | 0.4 | 0.5 | 0.5 | 0.6 | 0.6 | 0.6 |
Tide / Current Tables for Vieques Passage, Puerto Rico Current
EDIT (on/off) Help One Week of DataVieques Passage
Click for Map
Mon -- 01:17 AM AST 0.49 knots Max Flood
Mon -- 04:05 AM AST -0.00 knots Slack
Mon -- 06:05 AM AST Sunrise
Mon -- 07:30 AM AST -0.68 knots Max Ebb
Mon -- 09:16 AM AST Moonset
Mon -- 10:48 AM AST 0.00 knots Slack
Mon -- 01:53 PM AST 0.61 knots Max Flood
Mon -- 05:05 PM AST -0.00 knots Slack
Mon -- 06:46 PM AST Sunset
Mon -- 08:05 PM AST -0.55 knots Max Ebb
Mon -- 09:36 PM AST Moonrise
Mon -- 11:14 PM AST 0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Click for Map
Mon -- 01:17 AM AST 0.49 knots Max Flood
Mon -- 04:05 AM AST -0.00 knots Slack
Mon -- 06:05 AM AST Sunrise
Mon -- 07:30 AM AST -0.68 knots Max Ebb
Mon -- 09:16 AM AST Moonset
Mon -- 10:48 AM AST 0.00 knots Slack
Mon -- 01:53 PM AST 0.61 knots Max Flood
Mon -- 05:05 PM AST -0.00 knots Slack
Mon -- 06:46 PM AST Sunset
Mon -- 08:05 PM AST -0.55 knots Max Ebb
Mon -- 09:36 PM AST Moonrise
Mon -- 11:14 PM AST 0.00 knots Slack
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 |
| 0.4 | 0.5 | 0.5 | 0.3 | 0 | -0.3 | -0.5 | -0.7 | -0.7 | -0.5 | -0.2 | 0.1 | 0.4 | 0.6 | 0.6 | 0.5 | 0.3 | 0 | -0.3 | -0.5 | -0.5 | -0.5 | -0.3 | -0.1 |
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 (12,3,4,5)
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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. |