Sunday, May31, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Lomas, PR

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:45AMSunset 6:57PM Sunday May 31, 2020 1:02 PM AST (17:02 UTC) Moonrise 1:56PMMoonset 1:45AM Illumination 71% Phase: Waxing Gibbous; Moon at 9 days in cycle
NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.
Marine Forecasts
    EDIT      (on/off)   Help
AMZ712 Coastal Waters Of Northern Puerto Rico Out 10 Nm- 1003 Am Ast Sun May 31 2020
.small craft should exercise caution...
Rest of today..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Isolated showers through the day.
Tonight..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 9 seconds. Isolated showers through the night.
Monday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 9 seconds. Isolated showers through the day.
Monday night..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers.
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.
Wednesday..East winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers.
Thursday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
AMZ700 1003 Am Ast Sun May 31 2020
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure across the north central atlantic and an area of low pressure over the central atlantic north of the region, will maintain a gentle to moderate east to southeast wind flow across the regional waters through Monday. Then, another surface high pressure will move from the western atlantic into the central atlantic by midweek, promoting a moderate to locally fresh trade winds across the region through the end of the work-week. Seas up to 5 feet will prevail for the next several days.


7 Day Forecast for Marine Location Near Lomas, PR
   Hourly   EDIT   Help
location: 18.28, -65.93     debug


Area Discussion for - San Juan, PR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXCA62 TJSJ 311540 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 1140 AM AST Sun May 31 2020

UPDATE.

Another hot day across the Caribbean islands of Puerto Rico and the U.S. Virgin Islands is expected today with maximum temperatures in the low 90s. Heat indices will range from the upper 90s to low 100s degrees. The skies will remain hazy as an African air mass with dust particles moves across. Regardless of this dry air mass, the combination of local effects, diurnal heating and sea breeze variations will aid in the formation of showers and isolated thunderstorms across the interior and western sections during the afternoon. Elsewhere, fair and warm weather conditions.

AVIATION.

VFR conditions expected today. Hazy skies will continue today, and JSJ is reporting 9SM vis. SHRA/TSRA expected btw 31/18z-22z over the interior/west PR, as well as downwind from the USVI. This activity may cause tempo MVFR at TJMZ/TJBQ due to TSRA. Winds will continue from the E-ESE at 10 to 17 knots with higher gusts and sea breeze variations.

MARINE.

Mariners can expect seas between 1 and 3 feet in protected waters, and between 3 and 5 feet across the exposed ones. Winds are now from the east to east-southeast at 10 to 17 knots. However, local effects are increasing it up to 20 knots, especially across the northern coastal waters of Puerto Rico. Therefore, mariners should exercise caution.

PREV DISCUSSION. /issued 457 AM AST Sun May 31 2020/

SYNOPSIS . A surface high pressure across the north central Atlantic and an area of low pressure over the central Atlantic, will maintain a light to moderate east to southeast wind flow across the region through Tuesday. Another surface high pressure will cross the western Atlantic into the central Atlantic by midweek, promoting an increase in the easterly trades winds through the end of the workweek. Few passing clouds and trade wind showers will affect the coastal waters surrounding the U.S. Virgin Islands and eastern PR during the rest of the morning hours. The proximity of a lingering upper trough along with local forcing and daytime heating will support afternoon showers and isolated thunderstorms development mainly over the west sections of Puerto Rico. Elsewhere mostly sunny and hazy conditions will prevail today with only a slight chance of an isolated shower.

SHORT TERM . Sunday through Tuesday . Saharan dust will continue across the area, resulting in hazy skies through the short-term forecast period. A mid to upper level trough continues over the central Atlantic, with its axis located just to the east of the local islands. This feature is resulting in 500 mb temperatures at -8 to -10 degree Celsius. At the mid levels, high pressure is located to the northeast of the Caribbean, while at the surface, a high pressure is supporting trade winds out of the east to east-southeast. For today, precipitable water values are expected to remain near or below normal, around 1.5 inches, trapped into the lower levels of the atmosphere. With some support from the trough, and in combination with local effect and diurnal heating, showers and isolated thunderstorms should develop in the afternoon across the interior and western Puerto Rico. Streamers may also form downwind from El Yunque and from the U.S. Virgin Islands, Vieques and Culebra. Due to the presence of dry air, widespread significant rainfall accumulation is not anticipated. For Monday, a little more moisture is expected as a patch of clouds approaches from the east. As a result, afternoon convection is expected to cover more ground, focusing over the interior and northwestern quadrant of Puerto Rico. On Tuesday, a similar pattern is forecast. However, Saharan dust concentration will somewhat diminish. In terms of temperatures, a predominant east-southeast wind flow will cause highs above the climatological value, surpassing the 90 degree mark for the next several days over the coastal areas of Puerto Rico, and also near 90 degrees over the U.S. Virgin Islands.

LONG TERM . Wednesday through Sunday . Latest model guidance continued to suggest that the polar trough will be reinforced across the western Atlantic and become amplified while sinking southwards across the northeast Caribbean through Friday. This will favor cooler temps aloft with the 500 mb temperatures ranging between -8 to -10 degree Celsius. This instability aloft along with moisture accompanying a tropical wave, will affect the region through Wednesday and increase low level moisture pooling and convergence. Therefore increased potential for more frequent early morning and afternoon showers and thunderstorm development can be expected across the islands and coastal waters at least through Thursday. Some explosive and enhanced convection with heavy rainfall will remain possible over portions of the islands each afternoon but especially over parts of Puerto Rico.

By Thursday through the end of the work week, a surface high pressure ridge will spread across the central and northeast Atlantic to increase the easterly trade winds. This will tighten the local pressure gradient over the forecast area and increase the trade winds, resulting in somewhat breezy conditions over the islands. Therefore expect more frequent passing shower activity over the east coastal areas of the islands and surrounding waters during the overnight and early morning hours. The aforementioned upper trough (TUTT) is expected to lift northeastward across the islands by Friday, accompanied by a jet segment which should again destabilize the upper levels during the afternoon. This feature along with available moisture will increase the chance for isolated areas of enhanced afternoon thunderstorms mainly over the west sections of Puerto Rico. A gradual improvement is forecast by the weekend and latter part of the period as the upper trough pulls away, and the pressure gradient relaxes while local winds become more east northeast on Sunday then more east southeast by Monday and Tuesday.

AVIATION . Mainly VFR conditions are expected to prevail across all terminals. HZ due to Saharan air will reduce VIS through the forecast period, although remaining at P6SM. After 17Z, VCTS will affect TJBQ/TJMZ with brief MVFR conditions possible. FL050 winds will be out of the east at 10 to 20 knots.

MARINE . Seas will continue between 1-5 feet across the regional waters. East to southeast winds up to 15 knots will prevail through Tuesday , increasing to 15-20 knots by midweek. A moderate risk of rip currents will continue across most of the northern and some eastern and southern beaches of the islands.

PRELIMINARY POINT TEMPS/POPS. SJU 78 90 79 91 / 30 50 30 30 STT 79 87 79 88 / 40 10 40 40

SJU WATCHES/WARNINGS/ADVISORIES. PR . None. VI . None. AM . None.

SHORT TERM . CAM PUBLIC DESK . mb


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SJNP4 - 9755371 - San Juan, PR 16 mi44 min ENE 16 G 22 84°F 85°F1017.9 hPa
41053 - San Juan, PR 16 mi62 min ENE 16 G 19 83°F 83°F1017 hPa (+0.0)
41056 25 mi62 min E 9.7 G 12 83°F 84°F3 ft1017.4 hPa (+0.3)
JOXP4 - Jobos Bay Reserve, Puerto Rico 27 mi77 min ESE 8 89°F 1019 hPa73°F
ESPP4 - 9752695 - Esperanza, PR 28 mi44 min ESE 11 G 15 89°F 85°F1018 hPa
CLBP4 - 9752235 - Culebra, PR 33 mi50 min 89°F 85°F1017.8 hPa
42085 - Southeast of Ponce, PR 43 mi62 min E 16 G 18 84°F 85°F4 ft1016.9 hPa (+0.0)

Wind History for Fajardo, 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.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR11 mi66 minENE 179.00 miPartly Cloudy90°F73°F59%1017.8 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 24hrE15NE17E17E16
G24
E17E13E13E9E6E8SE7E5E7E4E4E4SE3SE3SE3E9E9NE14E15E17
1 day agoNE14
G19
E9
G17
NE18
G23
E10
G17
SE7SE8S65S6S3SE3S4S3CalmCalmCalmCalmCalmCalmCalmE6E9NE14
G18
5
2 days agoSW7SW7SW6SE4E6N6E9E6SE4S5S3S3CalmCalmCalmCalmS3CalmSE3SE4SE43SE73

Tide / Current Tables for Boca De Cangrejos, Isla Verde, San Juan, Puerto Rico
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Boca De Cangrejos
Click for Map
Sun -- 01:44 AM AST     Moonset
Sun -- 04:12 AM AST     1.17 feet High Tide
Sun -- 05:46 AM AST     Sunrise
Sun -- 10:48 AM AST     0.18 feet Low Tide
Sun -- 01:56 PM AST     Moonrise
Sun -- 05:13 PM AST     1.09 feet High Tide
Sun -- 06:56 PM AST     Sunset
Sun -- 11:09 PM AST     0.38 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
0.50.70.91.11.21.110.80.60.40.20.20.30.40.60.911.11.10.90.80.60.40.4

Tide / Current Tables for Vieques Passage, Puerto Rico Current
   EDIT      (on/off)   Help   One Week of Data
Vieques Passage
Click for Map
Sun -- 01:42 AM AST     Moonset
Sun -- 03:02 AM AST     0.00 knots Slack
Sun -- 05:45 AM AST     Sunrise
Sun -- 05:49 AM AST     0.48 knots Max Flood
Sun -- 08:34 AM AST     -0.00 knots Slack
Sun -- 11:56 AM AST     -0.68 knots Max Ebb
Sun -- 01:54 PM AST     Moonrise
Sun -- 03:06 PM AST     0.00 knots Slack
Sun -- 06:25 PM AST     0.75 knots Max Flood
Sun -- 06:54 PM AST     Sunset
Sun -- 09:42 PM AST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
-0.6-0.5-0.3-00.20.40.50.40.2-0.1-0.4-0.6-0.7-0.6-0.4-00.30.60.70.70.50.2-0.1-0.4

Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS 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 (13,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Puerto Rico,Virgin Islands
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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 numerous 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.