Friday, March24, 2017 L-36.com


Marine Weather and Tides
Jobos, 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 6:23AMSunset 6:37PM Friday March 24, 2017 10:11 AM AST (14:11 UTC) Moonrise 3:47AMMoonset 3:33PM Illumination 10% 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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AMZ735 Coastal Waters Of Southern Puerto Rico Out 10 Nm- 953 Am Ast Fri Mar 24 2017
Rest of today..East winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Scattered showers through the day. Isolated Thunderstorms in the afternoon.
Tonight..East winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers and isolated Thunderstorms.
Saturday..Southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Southeast swell around 4 feet. Scattered showers and isolated Thunderstorms.
Saturday night..Southeast winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Southeast swell around 4 feet. Scattered showers and isolated Thunderstorms.
Sunday..Southeast winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Isolated Thunderstorms. Scattered showers.
Monday..Southeast winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
Tuesday..Northwest winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
AMZ700 953 Am Ast Fri Mar 24 2017
Synopsis for puerto rico and the uS. Virgin islands waters... Light to moderate east to southeast winds are expected today and will become southerly through the weekend as a surface low is forecast to develop north of hispaniola. A large northerly swell generated by the low in the western atlantic is expected to impact our local atlantic waters and passages by late tonight. This will again create hazardous and building seas over the the weekend.

7 Day Forecast for Marine Location Near Jobos, PR
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location: 17.93, -66.16     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 240912
afdsju
area forecast discussion
national weather service san juan pr
512 am ast Fri mar 24 2017

Synopsis Deep layered moisture and trof pattern aloft will
maintain an unsettled weather pattern through the weekend. At low
levels, a surface trough and developing low north of hispaniola
will continue to create a moist southerly wind flow over the
forecast area. At least through the weekend the potential for
urban and small stream flooding will remain high across the
islands.

Short term Friday through Sunday...

mostly cloudy skies prevailed across the local islands overnight and
early this morning with shower activity observed across the caribbean
waters, the eastern half of puerto rico as well as the u.S. Virgin
islands. Rainfall accumulations across the usvi were between one and
two inches with minimal accumulations noted over puerto rico.

Temperatures along coastal areas were in the mid to upper 70s under
light and variable winds.

The local weather regime will continue to be dictated by a mid to
upper level trough which is located across the western atlantic and
into the central caribbean. The trough aloft and associated upper
level divergent pattern will persist through early next week.

Although the jet maxima remains north of the forecast area during
the entire period; is close enough to destabilize the local atmosphere.

At lower levels, an induced trough across the northeast caribbean,
which is associated with the aforementioned trough, is expected to
develop into a low by sun. This will continue to support moisture
advection from the southeast during the next few days.

Therefore, under plenty of moisture and favorable upper level
dynamics, environmental conditions are favorable and conductive for
shower and thunder activity across the area. Based on the latest
guidance, the best chance for periods of showers and tstorms is
expected across east and southeast puerto rico as well as the u.S.

Virgin islands Fri and Sat with a slightly decrease in coverage and
intensity on sun. Shower and thunder activity across northwest puerto
rico will be locally induced and enhanced by the proximity of the
trough aloft. These showers likely to result in urban flooding as well
as rises along small streams and rivers particularly across eastern
puerto rico.

Long term Monday through Friday.

Surface low is forecast to move north of the islands through early
next week across the central atlantic. Creating a south to
southwesterly wind flow through at least late Tuesday night. As
the low pulls away, moisture content is expected to diminish
quickly as a strong surface high pressure develops over the
western atlantic and moves slowly north of the islands through the
forecast period. At the moment, best chance for showers are
expected between eastern/northern pr and the usvi on
Monday/Tuesday. At upper levels another short wave trof is
expected to move on Wednesday. Then a ridge will build across the
caribbean basin. This in combination with a cool northerly wind
flow due to the surface high will promote drier air and fair
weather conditions across the islands.

Aviation MVFR or even ifr conds at times will remain possible through
the forecast period at all pr and usvi TAF sites, particularly
jsj/ist/isx. Mountain obscurations expected throughout the day. Mostly
vfr conds at the leeward terminals. East southeast winds at 10 knots or
less.

Marine Coastal buoys are indicating seas around 4 feet and
variable winds at less than 10 knots. A northerly swell is
forecast to reach the local atlantic waters late tonight and
increase through the weekend across the rest of the northern
waters of the islands and passages. Small craft advisories will be
in effect. A high risk of rip currents is expected across much of
the north facing beaches of the islands during the weekend.

Preliminary point temps/pops
Sju 84 72 85 73 / 70 50 60 50
stt 82 73 81 74 / 70 60 70 50

Sju watches/warnings/advisories
Am... Small craft advisory from 2 pm Saturday to 2 pm ast Sunday
for anegada passage southward to 17n.

Small craft advisory from 8 am Saturday to 2 pm ast Sunday for
coastal waters of northern puerto rico out 10 nm-mona
passage southward to 17n.

Small craft advisory from 2 pm Saturday to 8 am ast Sunday for
coastal waters of northern usvi and culebra out 10 nm.

Small craft advisory from 8 am Saturday to 8 am ast Sunday for
coastal waters of northwestern puerto rico out 10 nm.

Small craft advisory from 2 am Saturday to 8 pm ast Sunday for
atlantic waters of puerto rico and usvi from 10 nm to 19.5n.

Short term... Om
long term... .Ds


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
JOXP4 - Jobos Bay Reserve, Puerto Rico 4 mi86 min ENE 4.1 76°F 1016 hPa72°F
YABP4 - 9754228 - Yabucoa Harbor, PR 19 mi41 min Calm G 1
42085 - Southeast of Ponce, PR 20 mi41 min E 7.8 G 9.7 77°F 1015.4 hPa
SJNP4 - 9755371 - San Juan, PR 37 mi41 min Calm G 1 78°F 80°F1016.1 hPa
41053 - San Juan, PR 38 mi41 min NNE 1.9 G 1.9 79°F 1015.5 hPa
ESPP4 - 9752695 - Esperanza, PR 38 mi41 min S 4.1 G 6 77°F 80°F1016.3 hPa
FRDP4 - 9753216 - Fajardo, PR 40 mi41 min E 1.9 G 2.9 79°F 71°F
VQSP4 - 9752619 - Isabel Segunda, Vieques, PR 41 mi41 min S 5.1 G 7 76°F
41056 44 mi41 min SSE 3.9 G 5.8 77°F 1015.4 hPa
MGIP4 - 9759110 - Magueyes Islands, PR 47 mi41 min SSE 6 G 8 79°F 80°F1015.9 hPa
IMGP4 47 mi21 min ESE 7 G 8.9 81°F 1015.1 hPa
AROP4 - 9757809 - Arecibo, PR 48 mi41 min NNE 5.1 G 6 76°F

Wind History for Yabucoa Harbor, PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from JPS (wind in knots)
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Last 24hr------------------------------------CalmCalm--CalmCalmCalm
1 day agoCalm--NE5--E8E8E10----------------------S8E5NE5E5NE6NE5
2 days agoCalm--CalmCalmE6S10------------------------CalmCalmCalmCalmCalmCalm

Tide / Current Tables for Las Mareas, Puerto Rico
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Las Mareas
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Fri -- 12:06 AM AST     0.09 feet Low Tide
Fri -- 03:46 AM AST     Moonrise
Fri -- 06:25 AM AST     Sunrise
Fri -- 08:13 AM AST     0.64 feet High Tide
Fri -- 03:32 PM AST     Moonset
Fri -- 04:23 PM AST     0.20 feet Low Tide
Fri -- 05:47 PM AST     0.21 feet High Tide
Fri -- 06:36 PM AST     Sunset
Fri -- 07:15 PM AST     0.20 feet Low Tide
Fri -- 08:12 PM AST     0.20 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.10.20.30.40.50.60.60.60.60.60.50.40.30.30.20.20.20.20.20.20.20.20.1

Tide / Current Tables for Arroyo, Puerto Rico
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Arroyo
Click for Map
Fri -- 03:46 AM AST     Moonrise
Fri -- 06:24 AM AST     Sunrise
Fri -- 09:10 AM AST     0.70 feet High Tide
Fri -- 09:43 AM AST     0.51 feet Low Tide
Fri -- 03:32 PM AST     Moonset
Fri -- 06:36 PM AST     Sunset
Fri -- 07:22 PM AST     0.66 feet High Tide
Fri -- 09:45 PM AST     0.04 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.10.20.30.30.40.50.60.60.70.70.50.50.50.50.60.60.60.60.70.70.60.200.1

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 (10,2,3,4)
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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.