Tuesday, March31, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Carolina, 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 6:17AMSunset 6:38PM Tuesday March 31, 2020 1:15 PM AST (17:15 UTC) Moonrise 11:22AMMoonset 12:02AM Illumination 51% Phase: First Quarter Moon; Moon at 8 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- 1041 Am Ast Tue Mar 31 2020
Rest of today..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers through the day.
Tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers.
Wednesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 11 seconds. Isolated showers through the day.
Wednesday night..Southeast winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 12 seconds. Isolated showers.
Thursday..South winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
Friday..West winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. North swell around 4 feet. Scattered showers.
Saturday..North winds 5 to 10 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 12 seconds. North swell 4 to 5 feet. Scattered showers.
AMZ700 1041 Am Ast Tue Mar 31 2020
Synopsis for puerto rico and the uS. Virgin islands waters... Marine conditions will continue to gradually improve across the local waters today. Shower activity will diminish across the regional waters, and a light to gentle southeasterly wind flow will prevail through Thursday. A northerly swell will arrive across the local atlantic waters during the weekend.


7 Day Forecast for Marine Location Near Carolina, PR
   Hourly   EDIT   Help
location: 18.46, -65.99     debug


Area Discussion for - San Juan, PR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXCA62 TJSJ 311513 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 1113 AM AST Tue Mar 31 2020

UPDATE. A weak surface high pressure just north of the region is promoting light to moderate easterlies and overall fair weather conditions across the islands. Light passing trade wind showers were noted earlier this morning across the USVI and eastern half of PR. Rainfall accumulations were not significant. For this afternoon, diurnally induced afternoon showers are expected to develop over portions of the interior and western PR. Across the rest of the area, mostly sunny to partly cloudy skies should prevail.

AVIATION Update. Mainly VFR conditions are expected to prevail across all terminals during the next 24 hours. RA/VCSH possible at TJMZ/TJBQ this afternoon. East winds between 10-15 kt with sea breeze variations are expected to prevail through 21z.

MARINE Update. Seas are expected to continue at less than 4 feet across the regional waters through at least Thursday. East winds today should remain at 15 knots or less, becoming more light and southerly on Wednesday. A long period northerly swell is expected to move across the local waters later in the weekend.

FIRE WEATHER. The KBDI at Camp Santiago is at 580 and the RH is currently in the low 50%. Winds are just below fire weather criteria from the east to southeast around 11 mph with gusts up to 19 mph. A fire danger statement continues in effect for the southeast coastal plains of Puerto Rico through late this afternoon.

PREV DISCUSSION. /issued 509 AM AST Tue Mar 31 2020/

SYNOPSIS . A dry and stable airmass will persist through Wednesday, as deep layered high pressure ridging will hold across the forecast area. This will promote subsidence aloft and a strong cap inversion which will limiting convective development. A gradual shift in low level winds is expected through Thursday becoming more southerly while decreasing. This will lead to warmer temperatures especially along the north coastal areas. A frontal boundary and weak prefrontal trough is to approach and set up across the region by Friday and into the weekend. By then a gradual erosion of the mid to upper level ridge is forecast,as a short wave trough will cross the western Atlantic. Consequently, increasing low level moisture convergence and instability aloft is so far expected by Friday and into the weekend. This will result in better potential for shower development across the islands and regional waters.

SHORT TERM . Today through Thursday . A dry weather pattern will prevail across the local region as a high pressure dominate the region through at least Wednesday. This drier air mass is expected to dominate, with precipitable water forecast to drop below one inch. As a result, only passing brief showers are expected to affect eastern and northern Puerto Rico through the nighttime and early morning hours, and with the support of local effects, additional showers could develop across western Puerto Rico. The high pressure is forecast to move east with the pressure gradient becoming less tight, therefore relaxing the wind velocity across our local forecast area through at least Thursday.

On Wednesday, winds are expected to shift to a more southeasterly flow, generating warmer temperatures across the area, with highs climbing into the upper 80s to low 90s across the northern half of Puerto Rico. Highs will remain in the mid-80s across the U.S. Virgin Islands through mid-week as well.

LONG TERM . Friday through Wednesday .

On Friday and into the weekend, the combination of the approaching frontal boundary along with the proximity of the upper level trough and a fairly light southerly flow, will result in increasing instability aloft and low level moisture convergence. The slightly warmer than normal high temperatures is also forecast to continue for the north coastal areas at least until Friday.

Moisture pooling will return over the weekend as the frontal boundary and associated shear line is forecast to stall and drift southwards across the northeastern Caribbean by Sunday. This along with the proximity of the upper level trough will increase the potential for shower development across the islands and coastal waters each day. Some of the shower activity will be enhanced and therefore urban and small stream flooding will be possible in isolated areas over the weekend and into early next week. Under this expected moist and unstable airmass, and based on latest model guidance, the best potential for convective development will be on Saturday and continuing through Sunday. Improving conditions is expected on Monday as the wind flow will shift once again and become more northerly. This is in response to a surface high pressure ridge which will build and spread across the west Atlantic. This will however be short-lived as low level moisture from the frontal remnants will return and be lifted back across the area Tuesday through Wednesday. Therefore this fairly moist and unstable pattern during the period should result in potential for early morning and afternoon shower development in and around the islands each day.

AVIATION . Mainly VFR conditions are expected to prevail across all terminals during the next 24 hours. -SHRA over SW PR should result in mainly VCSH at TJMZ thru 31/22z. East-northeast winds will continue at 10-15 kt, becoming light and variable overnight.

MARINE . Fairly tranquil marine conditions is expected today through Wednesday, with a light to gentle east to south wind to prevail across most of the coastal waters. Seas will range between 2 to 5 feet across the regional waters and passages.

PRELIMINARY POINT TEMPS/POPS. SJU 85 72 88 74 / 30 0 10 10 STT 85 73 84 74 / 30 10 20 20

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

DSR/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
41053 - San Juan, PR 6 mi76 min E 12 G 16 79°F 81°F3 ft1014 hPa (-1.1)
SJNP4 - 9755371 - San Juan, PR 7 mi46 min ENE 13 G 16 80°F 81°F1014.7 hPa
41056 31 mi76 min E 5.8 G 7.8 79°F 81°F3 ft1014 hPa (-0.9)
ESPP4 - 9752695 - Esperanza, PR 37 mi46 min SE 12 G 14 82°F 81°F1014.7 hPa
JOXP4 - Jobos Bay Reserve, Puerto Rico 37 mi91 min SE 8 84°F 1016 hPa67°F
AROP4 - 9757809 - Arecibo, PR 38 mi46 min NNE 8.9 G 14
CLBP4 - 9752235 - Culebra, PR 38 mi46 min 81°F1014.4 hPa

Wind History for San Juan, PR
(wind in knots)    EDIT      (on/off)   Help
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
1
PM
Last
24hr
NE11
G16
NE11
G14
NE13
NE11
G15
NE11
G17
NE10
G14
NE11
G16
NE11
G16
NE11
G17
NE10
G14
E11
G16
E10
SE7
SE7
SW4
SW4
W3
SW5
W2
W1
NE4
NE9
G13
E12
G16
NE13
G16
1 day
ago
NE15
G21
E14
G17
E14
G19
NE14
G17
E14
E13
NE12
G17
NE12
G16
NE9
E10
G15
NE12
NE12
G16
NE12
NE11
G16
E12
G15
E12
G15
E13
NE11
E12
G15
NE11
G15
E12
G15
NE11
G15
NE10
G14
NE11
2 days
ago
NE10
G15
NE9
G15
NE10
G14
NE9
G14
E12
G18
NE8
G13
E13
G16
E11
G16
E12
G15
E8
G12
E9
G14
NE9
G12
NE9
G15
E12
G16
E13
G17
E14
G18
E13
G17
SE8
G11
E7
G10
E16
E15
G19
E17
E16
G20
E16

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
Click EDIT to select an airport
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
Tue -- 12:02 AM AST     Moonset
Tue -- 02:40 AM AST     1.33 feet High Tide
Tue -- 06:18 AM AST     Sunrise
Tue -- 09:28 AM AST     0.58 feet Low Tide
Tue -- 11:21 AM AST     Moonrise
Tue -- 01:19 PM AST     0.73 feet High Tide
Tue -- 06:37 PM AST     Sunset
Tue -- 07:57 PM AST     0.05 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
11.21.31.31.31.10.90.80.70.60.60.60.70.70.70.60.50.40.20.10.10.10.30.5

Tide / Current Tables for San Juan, La Puntilla, San Juan Bay, Puerto Rico
   EDIT      (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
       (on/off)   Help Weather Map
wmap_A
GEOS 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.
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.