Saturday, January23, 2021
Privacy Policy
L-36.com

Marine Weather and Tides
Dorado, PR

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 6:59AMSunset 6:15PM Saturday January 23, 2021 3:45 AM AST (07:45 UTC) Moonrise 1:58PMMoonset 2:29AM Illumination 75% Phase: Waxing Gibbous; Moon at 10 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- 805 Pm Ast Fri Jan 22 2021
.small craft should exercise caution...
Rest of tonight..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. North swell 4 to 5 feet. Isolated showers through the night.
Saturday..East winds 5 to 10 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. North swell 4 to 5 feet. Isolated showers through the day.
Saturday night..East winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Isolated showers.
Sunday..Northeast winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. North swell around 4 feet. Isolated showers.
Sunday night..Northeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. North swell around 4 feet in the evening. Isolated showers.
Monday..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. North swell 4 to 6 feet. Isolated showers.
Tuesday..East winds 10 to 15 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 11 seconds. North swell 4 to 6 feet. Isolated showers.
Wednesday..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. North swell 4 to 5 feet. Isolated showers.
AMZ700 805 Pm Ast Fri Jan 22 2021
Synopsis for puerto rico and the uS. Virgin islands waters... Light to moderate winds are expected across the local waters during the next few days. A small northerly swell will continue to invade the atlantic waters through early Saturday, creating choppy seas. Tranquil marine conditions are expected then on Sunday and Monday, with another swell creating hazardous seas by early next week across the atlantic.


7 Day Forecast for Marine Location Near Dorado, PR
   Hourly   EDIT   Help
location: 18.47, -66.29     debug


Area Discussion for - San Juan, PR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXCA62 TJSJ 230044 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 844 PM AST Fri Jan 22 2021

UPDATE. Light afternoon showers persisted through the evening hours over portions of the western interior and western Puerto Rico. Rainfall accumulations were less than a quarter of an inch, with the highest amounts observed in Lares and Hormigueros. Elsewhere, it was mainly clear with a few showers lingering over the western waters of the U.S. Virgin Islands. For the rest of tonight, fair weather conditions are expected to prevail as drier air and stable conditions aloft continue across the region. Minimum temperatures are forecast to range from the mid 50s across the higher elevations to the low 70s across the lower elevations in Puerto Rico and from the high 60s to low 70s across the USVI.

The 23/00z SJU upper air sounding indicated a layer of moisture trapped below 850 mb and light easterly steering winds. This shallow layer of moisture will continue through at least Saturday morning, before increasing slightly during the afternoon hours when diurnally induced showers are expected to develop over the interior and southwestern sections of PR.

AVIATION Update. Mainly VFR conditions are expected to prevail across all terminals during the next 24 hours. Light and variable winds are expected overnight, increasing 8-12 kts from the east after 23/14z with sea breeze variations.

MARINE Update. A long period northerly swell will continue to fill tonight into Saturday morning across the Atlantic waters and passages. This will keep seas between 4-6 feet across these waters, elsewhere, seas are expected to remain between 2-5 feet in general. Light to moderate easterly winds will continue through Saturday, turning more from the northeast by Saturday night. The swell will also cause a high risk of rip currents along the northern beaches of Puerto Rico through Saturday afternoon. Please refer to the latest Coastal Hazard Message (CFWSJU) and surf zone forecast (SRFSJU) for more details.

PREV DISCUSSION. /issued 354 PM AST Fri Jan 22 2021/

SYNOPSIS . Only limited rainfall activity is anticipated through the next several days as small patches of moisture move across the islands. No significant rainfall events are expected during the next several days. A small northerly swell will result in High Rip Current Risk for the northern coast of Puerto Rico through Saturday.

SHORT TERM . Tonight through Sunday

A mid to upper level trough continues over the north-central Atlantic, but will continue to move away during the weekend. At the mean time, a mid-level ridge building over the northwestern Caribbean will extend its hold over the region. As a result, the trade wind cap inversion is expected to restrengthen, thus trapping all the moisture to the lower levels of the atmosphere. At the surface, high pressure is expected to build near the Bahamas, resulting in a northeasterly wind flow through the weekend.

Moisture content is expected to remain limited, with precipitable water values around 1.1 to 1.4 on Saturday, and near 1.0 inch on Sunday. Under a northeasterly wind flow, advective showers may affect portions of the U.S. Virgin Islands and eastern Puerto Rico in the overnight and early morning hours. Then, as is usual, afternoon convection could develop across southwestern Puerto Rico. Due to the lack of mid and upper level support, and the limited available moisture, only moderate rainfall accumulation is anticipated. Additionally, this wind flow will result in seasonable temperatures will continue across the region. Highs will reach the mid 80s at lower elevations and the upper 70s in the mountain; lows will drop into the upper 50s and low 60s at the mountain, and the mid and upper 70s at the coast.

LONG TERM . Monday through Friday .

Model guidance continues to suggest that mainly fair and stable weather conditions will dominate the local area through most of the long-term forecast period, with patches of low-level moisture generating brief periods of cloudiness and isolated to scattered shower activity from time-to-time. The frequency of patches of low-level moisture may increase by midweek as the remnants of an old frontal boundary drift into the forecast area. However, model guidance does not suggest significant moisture content, with model-estimated precipitable water vapor briefly peaking around 1.30 inches by Thursday afternoon. Mid-level ridging will promote subsidence and drier air aloft, conditions that will also limit any chance for organized convective development. That said, significant wetting rains are not anticipated through at least Friday afternoon, which will continue to support further deterioration of soils and fuels moisture, while promoting favorable fire weather conditions.

Thereafter, model guidance suggests that the remnants of yet another frontal boundary will drift into the forecast area by Friday night. Under somewhat favorable conditions aloft and enhanced moisture content, there may be a higher chance for significant wetting rains. However, it is too soon and there is low confidence in the impacts, if any, this feature could bring to our area.

AVIATION. VFR SCT lyrs nr FL025. FL050 . SKC ABV. Isold SHRA ovr regional waters mainly btw Eastern PR and USVI. Sfc wnds fm E-NE 5 to 15 mph with sea breeze variations . bcmg lgt/vrb to calm aft 22/23Z. No sig operational wx impacts durg prd.

MARINE . A small northerly swell will continue to create choppy seas through early tomorrow across the Atlantic waters. Then, tranquil seas are expected for the rest of the weekend. Another northerly swell is anticipated by early next week. Winds are expected to remain generally light to moderate. For the beaches, a high rip current risk is expected through tomorrow for northern Puerto Rico.

PRELIMINARY POINT TEMPS/POPS. SJU 73 85 75 83 / 20 20 20 20 STT 72 83 72 84 / 20 20 20 20

SJU WATCHES/WARNINGS/ADVISORIES. PR . High Rip Current Risk through Saturday afternoon for North Central-Northeast-Northwest-San Juan and Vicinity-Southeast.

VI . None. AM . None.

Update . DSR Short Term . ERG Public Desk . LIS


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 9 mi45 min SSE 2.9 G 4.1 76°F 81°F1016 hPa (-1.2)
41053 - San Juan, PR 10 mi45 min S 3.9 G 5.8 76°F 80°F5 ft1014.8 hPa (-1.2)
JOXP4 - Jobos Bay Reserve, Puerto Rico 36 mi60 min N 1.9 71°F 1017 hPa66°F
42085 - Southeast of Ponce, PR 43 mi105 min NE 9.7 G 9.7 78°F 80°F2 ft1015 hPa (-1.1)
41056 46 mi45 min ENE 7.8 G 9.7 78°F 80°F3 ft
MGZP4 - 9759394 - Mayaguez, PR 49 mi45 min 74°F 82°F1016.3 hPa (-1.2)

Wind History for San Juan, PR
(wind in knots)    EDIT      (on/off)   Help
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
12
AM
1
AM
2
AM
Last
24hr
SE3
S3
--
SW4
S3
SW3
SW2
E8
G11
E10
NE11
G14
E13
G17
NE15
NE14
G17
NE13
G16
E13
G16
E14
G17
E11
G16
E11
E6
E7
E4
SE3
S4
S3
1 day
ago
S5
S3
S2
SW3
SW3
SW4
SW3
W2
E5
NE8
G11
NE8
G11
NE9
G12
NE9
G12
NE10
G14
NE11
E10
E10
E9
SE5
E5
SE4
SE3
S3
SW3
2 days
ago
E8
SE4
SE4
SE5
SE8
E11
G17
E15
G20
E14
G18
E16
G20
E17
E17
E16
E15
G19
E14
G17
E10
G13
E8
SE7
E5
E3
SE5
S2
S1

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, PR16 mi49 minN 010.00 miA Few Clouds74°F70°F88%1015.9 hPa

Link to 5 minute data for TJSJ

Wind History from JSJ (wind in knots)
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
12
AM
1
AM
2
AM
3
AM
Last 24hrCalmCalmCalmCalmCalmSE4E6E9E10E11E13NE13E13E13E12E8E7E6CalmSE4CalmE5S4Calm
1 day agoCalmCalmCalmCalmCalmCalm4E8NE11NE8
G16
NE8NE9NE11E11E8E6SE4CalmCalmCalmCalmCalmCalmCalm
2 days agoE7CalmSE3E4CalmSE5E14E15E15E16NE15E15E14E13E11E9E6SE4SE3CalmSE3CalmCalmCalm

Tide / Current Tables for San Juan, Puerto Rico (3)
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
San Juan
Click for Map
Sat -- 02:28 AM AST     Moonset
Sat -- 05:40 AM AST     1.23 feet High Tide
Sat -- 06:59 AM AST     Sunrise
Sat -- 12:18 PM AST     0.46 feet Low Tide
Sat -- 01:57 PM AST     Moonrise
Sat -- 04:06 PM AST     0.62 feet High Tide
Sat -- 06:13 PM AST     Sunset
Sat -- 10:48 PM AST     -0.21 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
0.10.30.60.91.11.21.21.110.80.60.50.50.50.50.60.60.60.50.30.1-0-0.2-0.2

Tide / Current Tables for San Juan, Puerto Rico (2) (expired 1998-12-31)
   EDIT      (on/off)   Help   One Week of Data
San Juan
Click for Map
Sat -- 02:28 AM AST     Moonset
Sat -- 05:38 AM AST     1.23 feet High Tide
Sat -- 06:59 AM AST     Sunrise
Sat -- 12:12 PM AST     0.43 feet Low Tide
Sat -- 01:57 PM AST     Moonrise
Sat -- 04:15 PM AST     0.64 feet High Tide
Sat -- 06:13 PM AST     Sunset
Sat -- 10:51 PM AST     -0.20 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
00.30.60.91.11.21.21.110.80.60.50.40.50.50.60.60.60.50.40.2-0-0.2-0.2

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
Ground Weather Radar Station




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. Google supplies the ads on this site. Because I do not track who you are, I cannot customize how these ads are served. They may be personalized to improve the ad experience. If you do not want personalized ads, please adjust the settings on the Google site HERE. NOTE: The best I can determine, this site is not subject to CCPA but I am doing my best to comply 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.