Tuesday, May11, 2021
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Marine Weather and Tides
Carolina, PR

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 5:50AMSunset 6:49PM Tuesday May 11, 2021 7:39 AM AST (11:39 UTC) Moonrise 5:47AMMoonset 6:52PM Illumination 0% Phase: New Moon; Moon at 29 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
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AMZ712 Coastal Waters Of Northern Puerto Rico Out 10 Nm- 306 Am Ast Tue May 11 2021
.small craft should exercise caution...
Today..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 8 seconds. Isolated showers.
Tonight..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 8 seconds. Isolated showers.
Wednesday..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Isolated showers.
Wednesday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 12 seconds. Northeast swell around 4 feet. Isolated showers.
Thursday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 12 seconds. Northeast swell around 4 feet. Isolated showers.
Friday..Southeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Isolated showers.
Saturday..Southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 11 seconds. Isolated showers.
AMZ700 306 Am Ast Tue May 11 2021
Synopsis for puerto rico and the uS. Virgin islands waters... Moderate to fresh easterly winds will prevail across the local waters before weakening slightly around midweek. Choppy seas can be expected across portions of the regional waters and local passages. A small northerly swell will move across the local atlantic waters between Wednesday night and Thursday. Isolated to scattered showers are possible from time to time across the local waters.


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


Area Discussion for - San Juan, PR
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FXCA62 TJSJ 110702 AFDSJU

Area Forecast Discussion National Weather Service San Juan PR 302 AM AST Tue May 11 2021

SYNOPSIS. A mid-level ridge is expected to continue over the region during the next few days. Mid-to-upper level cloudiness associated to a trough west of the region will continue today into Wednesday. Afternoon shower development over western Puerto Rico is expected through the long term period due to the combination of the available low-level moisture and local effects. Passing showers will continue to move at times across the U.S. Virgin Islands and eastern PR.

SHORT TERM. Today through Thursday .

Latest GOES-16 infrared satelite imagery shows an abundance of mid to upper-level cloudiness prevailing over area in response to an easterly wave located west of the area and a weakening upper-level trough located near the windward passage. Latest model guidance suggests that the mid to upper-level cloudiness will prevail today through at least Wednesday afternoon maintaining variably to mostly cloudy skies. Meanwhile, a dry layer is noted between the 850-500 mb layer in response to a mid-level ridge building in. This will basically limit the intensity as well as areal coverage of shower activity across the local area through the short-term period. Nevertheless, some patchy low-level moisture riding the easterly winds will aid in sustaining some passing showers across portions of eastern Puerto Rico and in and around the USVI during the overnight and early morning hours. Then, depending on the amount of daytime heating that occurs, some locally induced showers and possibly a few thunderstorms may develop over western Puerto Rico during the afternoon hours. As the aformentioned upper- level trough continues to weaken and lift away late Wednesday into Thursday, drying is expected in the mid to upper- levels. Therefore, on Thursday, more significant heating is expected and thus afternoon convection across western Puerto Rico will have a better chance of developing. However, limited low- level moisture will limit the longevity on any convection that develops. Overall, given the limited moisture and unfavorable conditions aloft, widespread as well as significant rainfall activity is not expected through the period.

LONG TERM. Friday through Tuesday .

A mid-to-upper level ridge is forecast to hold over the region through the long term period. A polar trough and associated surface front are expected to remain north of area, while a surface high pressure over the central Atlantic moves further east late in the period. This will cause winds to turn more from the southeast during the weekend. Warmer than normal temperatures are expected with the southeasterly winds. Hazy skies due to Saharan dust are possible early next the week, as a Saharan Air Layer is forecast to enter the southeastern Caribbean. The upper level ridge will promote drier air aloft and more stable conditions in general.

At lower levels, moisture is expected to be capped below 700 mb, and this shallow layer of moisture will bring occasional passing showers across the USVI and eastern sections of PR during the overnight/early morning hours. During the afternoon hours, the combination of the available low-level moisture, daytime heating and the sea breeze convergence will cause showers to develop mainly over the west/northwest sections of PR, and from streamers downwind of the USVI.

AVIATION. Mainly VFR conditions expected. VCSH are expected at times across most area terminals, however, no significant impacts to operations are expected. SCT-BKN layer between FL050-080 will continue through the period. Winds will continue from the E at less than 10 kts through 11/12z, increasing to 15-18kts with some sea breeze variations after 11/14z.

MARINE. Choppy wind driven seas up to 6 feet will continue today across the offshore waters and local passages. East winds between 15 to 20 knots are expected in general, decreasing 10 to 15 kt during the second part of the week. A 4-5 feet, long period northerly swell is forecast to move briefly across the Atlantic waters from Wed night through Thursday. A moderate rip current risk will continue across the north, east, and western beaches of Puerto Rico, and across all the beaches of the U.S. Virgin Islands, Vieques and Culebra.

PRELIMINARY POINT TEMPS/POPS. SJU 88 78 87 77 / 30 40 30 30 STT 87 76 87 77 / 30 30 20 20

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

SHORT TERM . GL LONG TERM . DSR


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41053 - San Juan, PR 6 mi99 min ESE 7.8 G 9.7 78°F 80°F4 ft1016.6 hPa (-0.0)
SJNP4 - 9755371 - San Juan, PR 7 mi69 min E 8.9 G 12 79°F 81°F1018.1 hPa
41056 31 mi99 min E 14 G 18 80°F 81°F4 ft
ESPP4 - 9752695 - Esperanza, PR 37 mi69 min E 9.9 G 15 80°F1018 hPa
JOXP4 - Jobos Bay Reserve, Puerto Rico 37 mi114 min NE 1.9 78°F 1018 hPa71°F
CLBP4 - 9752235 - Culebra, PR 38 mi69 min 79°F 82°F1017.9 hPa

Wind History for San Juan, PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR2 mi43 minE 510.00 miLight Rain78°F74°F87%1018.1 hPa

Link to 5 minute data for TJSJ

Wind History from JSJ (wind in knots)
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E18E15E15NE13E10E10E8E9E7E7E6E3E7E5E6E5E7E5
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Tide / Current Tables for Boca De Cangrejos, Isla Verde, San Juan, Puerto Rico
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Boca De Cangrejos
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Tue -- 03:54 AM AST     0.35 feet Low Tide
Tue -- 05:46 AM AST     Moonrise
Tue -- 05:51 AM AST     Sunrise
Tue -- 08:56 AM AST     0.85 feet High Tide
Tue -- 02:56 PM AST     0.01 feet Low Tide
Tue -- 03:01 PM AST     New Moon
Tue -- 06:48 PM AST     Sunset
Tue -- 06:52 PM AST     Moonset
Tue -- 10:02 PM AST     1.48 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.80.50.40.30.40.50.70.80.90.80.60.40.20.100.10.30.60.91.21.41.51.4

Tide / Current Tables for San Juan, Puerto Rico (3)
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San Juan
Click for Map
Tue -- 03:33 AM AST     0.33 feet Low Tide
Tue -- 05:46 AM AST     Moonrise
Tue -- 05:52 AM AST     Sunrise
Tue -- 08:27 AM AST     0.84 feet High Tide
Tue -- 02:25 PM AST     -0.05 feet Low Tide
Tue -- 03:01 PM AST     New Moon
Tue -- 06:49 PM AST     Sunset
Tue -- 06:52 PM AST     Moonset
Tue -- 09:35 PM AST     1.60 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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10.70.50.40.30.40.60.70.80.80.70.50.30.1-0-00.10.40.81.11.41.61.61.5

Weather Map
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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