Saturday, April29, 2017 L-36.com


Marine Weather and Tides
Naranjito, 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 5:56AMSunset 6:46PM Saturday April 29, 2017 7:27 AM AST (11:27 UTC) Moonrise 8:56AMMoonset 10:18PM Illumination 12% Phase: Waxing Crescent; Moon at 3 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- 420 Am Ast Sat Apr 29 2017
.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 7 seconds. Scattered showers in the morning. Isolated Thunderstorms through the day.
Tonight..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Scattered showers and isolated Thunderstorms.
Sunday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Scattered showers and isolated Thunderstorms.
Sunday night..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Scattered showers and isolated Thunderstorms.
Monday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 8 seconds. Scattered showers. Isolated Thunderstorms.
Tuesday..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Scattered showers. Isolated Thunderstorms.
Wednesday..Southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Isolated Thunderstorms, then isolated showers.
AMZ700 420 Am Ast Sat Apr 29 2017
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure across the north central atlantic will continue to sink southward and extend into the west and southwest atlantic through the rest of the weekend. The high pressure ridge will persist north of the region through the middle of next week promoting moderate to locally fresh trade winds. There is a chance for Thunderstorms and areas of heavy rainfall across the local waters during the weekend.

7 Day Forecast for Marine Location Near Naranjito, PR
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location: 18.31, -66.18     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 290900
afdsju
area forecast discussion
national weather service san juan pr
500 am ast Sat apr 29 2017

Synopsis Periods of showers and thunderstorms will continue to
prevail across the forecast area each day under tutt and plenty
of low level moisture. A more seasonable weather pattern will
prevail by the end of the next week.

Short term Today through Tuesday morning...

mostly cloudy skies prevailed across puerto rico and the u.S.

Virgin islands overnight. An area of showers and thunderstorms
affected the southeast section of puerto rico. Rainfall
accumulation from one to two inches were estimated by the doppler
weather radar in some localized areas in southeastern puerto rico.

For today, a very moist and unstable environment,will aid in the
development of showers and thunderstorms across the cordillera
central of puerto rico early in the afternoon, with the activity
expected to spread across the western interior and northwest
sections of puerto rico. Heavy rainfall will lead to urban and
small stream flooding.

An upper level trough is expected to linger across the local region
enhancing the development of showers and thunderstorms across the
local area through at least Tuesday. Low level moisture is expected
to remain high through this period. As a result, periods of showers
with thunderstorms can be expected mainly each afternoon across the
cordillera central of puerto rico.

Long term Tuesday afternoon through Sunday...

tutt will hold across the forecast area through midweek next week.

As this feature weakens Wednesday and into early Thursday, a mid to
upper level ridge is expected to build across the forecast area from
the west. The ridge aloft is then expected to hold through the
upcoming weekend. At lower levels, high pressure across the central
atlantic will move eastward wed-thu, promoting moisture advection
from the southeast fri-sat under the expected east southeast wind
flow.

Therefore, early next week still expect periods of showers and
isolated thunderstorms across E pr and usvi during the evening and
early morning hours followed by shower and thunder development across
west pr in the late morning and afternoon hours. As the ridge builds
and moisture erodes thu-fri, a more seasonable weather pattern is
expected late the upcoming week with warmer temperatures under the
aforementioned east southeast wind flow flow.

Aviation Periods of MVFR or even ifr conditions are expected to
persist across tisx through at least 29/12z with MVFR conds possible
at tist and tjsj through the morning hours. Shra/tsra development
expected aft 29/16z, to result in periods of MVFR/ifr conds and
mountain obscurations at all pr and usvi TAF sites.Elsewhere,VFR
conditions can be expected with vcsh. Low level winds will
continue mainly east at 10kts, increasing to 15 kts after 29/12z.

Marine Moderate to fresh trade winds will continue to prevail
across the local waters during the next several days, as a strong
surface high pressure across the central atlantic will maintain a
fairly tight pressure gradient. Short period wind driven seas are
still expected to prevail across the area through the weekend with
seas up to 6 feet and easterly winds 15 to 20 knots. A moderate
risk of rip currents continues across much of the local beaches.

Preliminary point temps/pops
Sju 84 76 84 76 / 70 40 50 50
stt 84 75 84 75 / 40 40 50 50

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

Vi... None.

Am... None.

Short term... Fc
aviation... ..Fc
long term... .Om
marine... ... .Om


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SJNP4 - 9755371 - San Juan, PR 11 mi46 min E 16 G 21 75°F 81°F1018.1 hPa
YABP4 - 9754228 - Yabucoa Harbor, PR 25 mi40 min ENE 8.9 G 15
JOXP4 - Jobos Bay Reserve, Puerto Rico 25 mi103 min NE 1.9 73°F 1018 hPa70°F
FRDP4 - 9753216 - Fajardo, PR 29 mi40 min ENE 12 G 14 77°F 73°F
AROP4 - 9757809 - Arecibo, PR 30 mi40 min E 7 G 12 74°F
41056 38 mi58 min ESE 14 G 19 78°F 1017.4 hPa
VQSP4 - 9752619 - Isabel Segunda, Vieques, PR 40 mi40 min SE 8 G 14 74°F
ESPP4 - 9752695 - Esperanza, PR 40 mi40 min ESE 8.9 G 13 76°F 80°F1017.4 hPa
CLBP4 - 9752235 - Culebra, PR 47 mi40 min 75°F 81°F1017.9 hPa

Wind History for San Juan, PR
(wind in knots)    EDIT      (on/off)   Help
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E11
G15
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NE15
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S6
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G13
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G11
E9
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G10
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G15

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR13 mi92 minESE 78.00 miLight Rain76°F75°F97%1017.6 hPa

Wind History from JSJ (wind in knots)
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Last 24hrE10E11E12E16
G21
E17E18
G25
E17
G25
E20E13E12E14E12E3SE3E13E11E13E10E11E11E13E12E7NE9
1 day agoE8E12E10E14E14E17
G21
E16
G22
E16E14E18E14E12E9E10E8E10E8E11E13E9E9E9E7E11
2 days agoS3SE6W85E13W8E12W7S4E4E8E6E8E8E8E6SE4E3CalmE4CalmSE4E5E7

Tide / Current Tables for San Juan, La Puntilla, San Juan Bay, Puerto Rico
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San Juan
Click for Map
Sat -- 05:54 AM AST     0.15 feet Low Tide
Sat -- 05:58 AM AST     Sunrise
Sat -- 08:55 AM AST     Moonrise
Sat -- 11:00 AM AST     0.91 feet High Tide
Sat -- 05:03 PM AST     -0.32 feet Low Tide
Sat -- 06:45 PM AST     Sunset
Sat -- 10:18 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.81.61.20.80.40.20.20.20.40.70.80.90.80.60.30-0.2-0.3-0.200.40.91.31.7

Tide / Current Tables for San Juan, Puerto Rico
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San Juan
Click for Map
Sat -- 05:54 AM AST     0.16 feet Low Tide
Sat -- 05:58 AM AST     Sunrise
Sat -- 08:55 AM AST     Moonrise
Sat -- 11:01 AM AST     0.93 feet High Tide
Sat -- 05:04 PM AST     -0.31 feet Low Tide
Sat -- 06:45 PM AST     Sunset
Sat -- 10:18 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.81.61.20.80.50.20.20.20.40.70.90.90.90.70.40-0.2-0.3-0.200.50.91.41.7

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 (7,2,3,4)
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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.