Tuesday, May23, 2017 L-36.com


Marine Weather and Tides
Carolina, PR

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 5:46AMSunset 6:54PM Tuesday May 23, 2017 2:56 AM AST (06:56 UTC) Moonrise 3:59AMMoonset 4:46PM Illumination 6% Phase: Waning Crescent; Moon at 27 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- 925 Pm Ast Mon May 22 2017
Rest of tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers through the night.
Tuesday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Tuesday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Wednesday..East winds 10 to 15 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 11 seconds. Northeast swell 4 to 5 feet in the afternoon. Isolated showers.
Wednesday night..East winds 10 to 15 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 11 seconds. Northeast swell 4 to 5 feet. Isolated showers.
Thursday..East winds 10 to 15 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.
Friday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Northeast swell around 4 feet. Isolated showers.
Saturday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Scattered showers.
AMZ700 925 Pm Ast Mon May 22 2017
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure over the western atlantic will gradually build and expand eastward over the central atlantic by Wednesday. As a result... Winds and seas are expected to slightly increase by Wednesday.

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 230125
afdsju
area forecast discussion
national weather service san juan pr
925 pm ast Mon may 22 2017

Update/near term Minor changes were introduced to the forecast
package, forecast on track. A mid level ridge will hold across
the forecast area through the end of the work week with some
weakening expected the upcoming weekend. The ridge pattern aloft
will promote limited moisture with precipitable water values
remaining below the normal range. At lower levels, a broad high
pressure will dominate the central atlantic, resulting in east
southeast winds across the eastern caribbean. Latest guidance
continues to indicate the saharan air layer across the eastern
caribbean during the next few days. Therefore, under the influence
of east southeast winds and a dry and stable air mass with dust
particles, a fair weather pattern is expected to prevail with warm
to hot temperatures and hazy skies much of this workweek. As the
ridge aloft erodes Sunday and into next week, an increase in low
level moisture is expected with a better chance for showers and
thunderstorms.

Aviation Vfr conds throught the forecast period. Although hazy
skies will continue, visibilities should remain p6sm. Light and
variable winds overnight.

Marine Tranquil marine conditions will continue to prevail
across the local waters through midweek when seas and winds are
expected to increase. This will result in seas around 7 feet with
a moderate to high risk of rip currents along the north facing
beaches.

Prev discussion /issued 417 pm ast Mon may 22 2017/
synopsis... High concentrations of suspended saharan dust particulates
continue to increase and will affect the region through Wednesday.

Lesser amounts expected to affect the area on Thursday and into the
weekend. The mid to upper level high pressure ridge will hold across
the region through Tuesday, with a weak short wave trough forecast
to quickly cross the region by Wednesday. Strong surface high across
the atlantic will remain in place and continue to be the dominant
feature during most of the forecast period.

Short term... Today through Wednesday...

mostly hot and hazy weather conditions prevailed across the region
today. The high pressure ridge aloft and the lingering saharan air
layer limited convection across the region to maintain an overall
hot and dry environment. Satellite imagery and the faa terminal doppler
radar showed a few showers developing over parts of the west interior
sections of puerto rico, and only a few clouds were noted streaming
over the coastal waters and on the downwind side of the other islands.

Expect this activity to be of short duration with most of the cloudiness
and showers to diminish and dissipated after sunset. Overall fair skies
and hazy conditions will persist overnight with similar weather conditions
expected across the region through Wednesday. There is a change of a
few light showers to form and move across the coastal waters overnight
and during the early morning with limited or no significant rainfall
forecast over most of the islands each afternoon. The exception will
be over the west interior of puerto rico where daytime heating and
local forcing may lead to brief afternoon showers or possibly and isolated
thunderstorm.

The weak short wave is forecast to move rapidly through the area
on Wednesday, but lack of moisture transport and the lingering
dust should suppress and limit any significant convective development.

After the trough passage, Wednesday,upper level wind flow will
turn strongly northwest ahead of an approaching ridge which will
make overall conditions stable once again.

Long term... Thursday through Tuesday...

the mid to upper level ridge will strengthen once again across
the region and continue to dominate the northeast caribbean through
Friday. Surface high pressure will remain anchored across the central
and east atlantic to maintain moderate easterly trade winds, which
will continue to bring a mostly dry and and stable air layer across
the region. Model guidance also continued to suggest that the saharan
air layer will persist across the region through most of the period.

Therefore... Conditions will remain hazy, relatively dry and stable
through Friday and into the weekend. It is not until the latter
part of the weekend through Monday of next week, when an induced
surface trough will bring moisture convergence across the region,
and increase the chance for showers and isolated thunderstorm
development across the portions of the islands and coastal waters.

Aviation...VFR prevailing. As heating mixes down drier air, the
only expectation for MVFR conds is under iso-sct shra/tsra in WRN or
nwrn pr till 22/23z / 23/02z respectively. Visibilities will likely
remain less than 15 miles most areas due to saharan dust. Sfc winds
ene 5 to 15 kt with sea/land breeze influences. Maximum winds W 50
to 70 kts from fl380-500 thru 24/00z.

Marine... Marine conds are relatively tranquil, but will increase
in the western caribbean and western atlantic on Wednesday. Seas
still expected to near 7 feet by then.

Preliminary point temps/pops
Sju 80 90 80 90 / 10 10 20 20
stt 80 90 80 88 / 10 10 20 20

Sju watches/warnings/advisories
Pr... None.

Vi... None.

Am... None.

Update/near term... Om
aviation... ... ... ..Om


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41053 - San Juan, PR 6 mi56 min E 12 G 14 81°F 81°F3 ft1015.5 hPa (-1.5)
SJNP4 - 9755371 - San Juan, PR 7 mi38 min E 8.9 G 11 81°F 83°F1016.1 hPa
FRDP4 - 9753216 - Fajardo, PR 21 mi38 min E 8.9 G 9.9 81°F 75°F
YABP4 - 9754228 - Yabucoa Harbor, PR 29 mi38 min ENE 2.9 G 6
41056 31 mi56 min ENE 7.8 G 9.7 81°F 82°F2 ft1015.9 hPa (-1.7)
VQSP4 - 9752619 - Isabel Segunda, Vieques, PR 36 mi38 min ESE 4.1 G 6 80°F
ESPP4 - 9752695 - Esperanza, PR 37 mi38 min ENE 1.9 G 4.1 78°F 83°F1015.7 hPa
JOXP4 - Jobos Bay Reserve, Puerto Rico 37 mi71 min N 2.9 78°F 1017 hPa73°F
AROP4 - 9757809 - Arecibo, PR 38 mi38 min SSE 5.1 G 6 75°F
CLBP4 - 9752235 - Culebra, PR 38 mi38 min 80°F 83°F1015.8 hPa

Wind History for San Juan, PR
(wind in knots)    EDIT      (on/off)   Help
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E11
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR2 mi60 minE 79.00 miA Few Clouds81°F73°F79%1016.1 hPa

Wind History from JSJ (wind in knots)
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Last 24hrE7E6E5E5SE3E7E11E10E12NE15NE13NE15
G22
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G23
E16E13E13E10E12E9E11E10E7E7
1 day agoE7E7E5SE3E5E6E11NE11NE14NE14NE13NE15
G22
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E15NE13NE14NE13E13NE13E10NE12E11E9E11
2 days agoE9E7E3E5E6E9NE10E12NE12NE14
G19
NE15NE15E17NE15
G20
E12NE11NE8NE9E11NE9E11E11E8E7

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 -- 01:27 AM AST     0.37 feet Low Tide
Tue -- 03:58 AM AST     Moonrise
Tue -- 05:48 AM AST     Sunrise
Tue -- 06:46 AM AST     1.00 feet High Tide
Tue -- 01:05 PM AST     -0.09 feet Low Tide
Tue -- 04:46 PM AST     Moonset
Tue -- 06:53 PM AST     Sunset
Tue -- 08:05 PM AST     1.50 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.40.40.50.70.8110.90.70.50.2-0-0.1-00.20.50.91.21.41.51.41.31

Tide / Current Tables for San Juan, La Puntilla, San Juan Bay, Puerto Rico
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San Juan
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Tue -- 12:42 AM AST     0.28 feet Low Tide
Tue -- 03:59 AM AST     Moonrise
Tue -- 05:48 AM AST     Sunrise
Tue -- 06:11 AM AST     1.14 feet High Tide
Tue -- 12:29 PM AST     -0.20 feet Low Tide
Tue -- 04:46 PM AST     Moonset
Tue -- 06:53 PM AST     Sunset
Tue -- 07:24 PM AST     1.68 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.30.40.60.811.11.10.90.60.3-0-0.2-0.200.30.81.21.51.71.71.51.20.8

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
carb_satellite

GOES Local Image of Puerto Rico    EDIT
Geos

Wind Forecast for (2,6,7,8)
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Ground Weather Radar Station Puerto Rico,Virgin Islands
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weather_mapweather_map weather_map

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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.