Wednesday, December13, 2017 L-36.com


Marine Weather and Tides
Playita Cortada, PR

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
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.

Sunrise 6:48AMSunset 5:54PM Wednesday December 13, 2017 6:53 AM AST (10:53 UTC) Moonrise 2:50AMMoonset 2:53PM Illumination 25% Phase: Waning Crescent; Moon at 25 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- 402 Am Ast Wed Dec 13 2017
Today..South winds 5 to 10 knots. Seas 2 feet or less. Dominant period 10 seconds. Isolated showers through the day.
Tonight..Northeast winds 5 to 10 knots. Seas 2 feet or less. Dominant period 10 seconds. Isolated showers.
Thursday..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers through the day.
Thursday night..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds.
Friday..Northeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Saturday..Northeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
Sunday..Northeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
AMZ700 402 Am Ast Wed Dec 13 2017
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure across the east central atlantic and frontal boundary to our northwest will maintain light to moderate southerly winds across the local area. By late Thursday, a high pressure ridge will build across the atlantic to maintain easterly trade winds into the weekend. A northerly swell will arrive by Thursday night.

7 Day Forecast for Marine Location Near Playita Cortada, PR
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location: 17.98, -66.45     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 130804
afdsju
area forecast discussion
national weather service san juan pr
404 am ast Wed dec 13 2017

Synopsis Surface high pressure across the east-central
atlantic and low pressure over the northwestern atlantic will
continue to cause light southerly winds today and possibly until
Thursday while moisture also increases. Frontal boundary will
continue stalled to the west of the local islands until Thursday,
before it starts to dissipate late Thursday. Local pattern will
likely cause isolated to scattered showers across portions of the
local forecast area.

Short term Today through Friday...

mostly clear skies and a few passing showers were observed across
the forecast area overnight and early this morning. Minimum
temperatures were in the low to mid 70s across the lower elevations
and in the 60s across the higher elevations. Winds were light and
variable.

A surface front will continue to stall west of the forecast area
while it dissipates. The surface front to the west and a surface
high across the central atlantic will continue to yield a light
south southeast wind flow through at least Thursday. As the surface
front dissipates, the surface high will then spread across the area,
tightening the local pressure gradient. Therefore, moderate easterly
winds are expected to return on Friday. At upper levels, a ridge
pattern will continue to slowly build, resulting in erosion of low
level moisture on Friday. Meanwhile, latest guidance continues to
indicate precipitable water values near the normal range through
Thursday under the south southeast wind flow. As a result, still
expect a mainly fair weather pattern with trade wind showers at
times as well as locally induced showers due to sea breeze
convergence across the northwest quadrant of the island today and
Thursday. Limited shower activity is expected Friday.

Long term Saturday through Thursday...

upper level ridge will continue over the local islands through the
weekend, then an upper trough moves near the eastern caribbean but
stays to our east, which means that we will stay in the subsident
side of the trough, inhibiting thunderstorm development over the
local area for early next week. The local pressure gradient is
expected to tighten this upcoming weekend into next week as a
surface high pressure moves north of the local islands. This setup
will cause a breezy easterly wind flow from Saturday into at least
Wednesday, winds decreasing a little thereafter. The available
moisture will be near normal with patched of higher moisture
moving in, causing a brief increase in shower activity over the
local area. Overall a seasonable pattern is expected in the
extended forecast. Temperatures also are expected to be seasonable
with highs in the low to mid 80s across the lower elevations and
in the 70s across the higher elevations, lows in the low to mid
70s across the lower elevations and in the 60s across the higher
elevations... Some isolated areas possibly slightly cooler.

Aviation Vfr conditions are expected to prevail at all TAF sites
through the forecast period with some mtn obscurations and brief
shra possible in and around tjbq tjmz tjsj between 18z and 22z.

Vcsh elsewhere. A light southerly wind flow is expected to prevail
with some sea breeze variations.

Marine Relatively tranquil marine conditions are expected until
the arrival of a northerly swell late Thursday. Seas will be up
at 5 feet today and Thursday during the day, as the northerly
swell moves in late Thursday into early Friday, the local seas
will increase up to 6 feet through Saturday then 7 feet or higher
on Sunday and into early next week.

Preliminary point temps pops
Sju 87 74 86 75 10 20 30 30
stt 83 75 85 74 20 40 40 30

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Om
long term... .Ja


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
42085 - Southeast of Ponce, PR 9 mi114 min N 7.8 G 7.8 79°F 82°F1012.3 hPa (-0.0)
YABP4 - 9754228 - Yabucoa Harbor, PR 33 mi54 min 72°F
AROP4 - 9757809 - Arecibo, PR 37 mi54 min SSE 4.1 G 5.1
SJNP4 - 9755371 - San Juan, PR 38 mi54 min 82°F1014.2 hPa (+1.2)
41053 - San Juan, PR 39 mi54 min S 3.9 G 3.9 77°F 82°F4 ft1013.3 hPa (+1.3)

Wind History for Penuelas (Punta Guayanilla), PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ponce, Mercedita Airport, PR7 mi2.1 hrsNE 510.00 miA Few Clouds72°F69°F94%1013.9 hPa

Wind History from JPS (wind in knots)
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Last 24hrCalm--------------------------------NE5NE5NE5--Calm--NE5
1 day agoCalm----------------------------------NE5----NE10----
2 days ago--NE5----------------------------CalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Playa Cortada, Puerto Rico
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Playa Cortada
Click for Map
Wed -- 02:49 AM AST     Moonrise
Wed -- 06:48 AM AST     Sunrise
Wed -- 07:24 AM AST     0.59 feet High Tide
Wed -- 08:31 AM AST     0.44 feet Low Tide
Wed -- 02:52 PM AST     Moonset
Wed -- 05:24 PM AST     0.60 feet High Tide
Wed -- 05:52 PM AST     Sunset
Wed -- 08:44 PM AST     -0.08 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.20.30.40.50.50.60.60.50.40.50.50.50.50.50.60.60.60.50.3-0-0.1-0.1-0

Tide / Current Tables for Playa de Ponce, Puerto Rico
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Playa de Ponce
Click for Map
Wed -- 02:50 AM AST     Moonrise
Wed -- 06:48 AM AST     Sunrise
Wed -- 08:20 AM AST     0.65 feet High Tide
Wed -- 02:53 PM AST     Moonset
Wed -- 05:52 PM AST     Sunset
Wed -- 10:57 PM AST     0.10 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.20.30.40.40.50.60.60.70.60.60.60.60.50.50.40.40.30.30.20.20.10.10.1

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 (5,6,7,8)
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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.