Friday, August23, 2019 L-36.com


Marine Weather and Tides
Santa Isabel, PR

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:09AMSunset 6:48PM Friday August 23, 2019 9:29 AM AST (13:29 UTC) Moonrise 12:00AMMoonset 12:40PM Illumination 45% Phase: Third Quarter Moon; Moon at 23 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- 350 Am Ast Fri Aug 23 2019
.small craft should exercise caution...
Today..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Scattered showers through the day.
Tonight..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Scattered showers.
Saturday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers.
Saturday night..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds.
Sunday..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Monday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated Thunderstorms, then isolated showers.
Tuesday..Northeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
AMZ700 350 Am Ast Fri Aug 23 2019
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure over the north central atlantic will continue to promote a moderate east to southeast wind flow through Monday. Moisture behind a weak tropical wave will maintain passing showers and isolated Thunderstorms this afternoon. Also, winds are forecast to converge later today and cause a wind surge with choppy seas across the local and regional waters.


7 Day Forecast for Marine Location Near Santa Isabel, PR
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location: 17.98, -66.4     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 230838 cca
afdsju
area forecast discussion... Corrected
national weather service san juan pr
438 am ast Fri aug 23 2019

Synopsis
Today a tropical wave will create showers and isolated
thunderstorms across puerto rico this afternoon. A surface to
mid-level ridge will hold across the region through Friday
evening. A dry saharan air mass is expected to trickle into the
region on Sunday and cause hazy conditions through the beginning
of the workweek. Although, a stable air mass will be in place
scattered to isolated showers are expected to develop during the
afternoons. On Tuesday moisture is expected to return as the
surface and mid-level ridges move southwest of puerto rico. The
returning moisture will end the saharan dust event. At the end of
the workweek the weather will be unsettled due to increasing
moisture as a result of tropical waves moving near the area.

Short term Today through Sunday... .

The lingering moisture associated with yesterday's tropical wave
will continue to bring passing showers across the windward sections
and the local waters through the morning hours. Although a ridge
pattern aloft will continue to suppress deep convection, isolated
thunderstorms should not be ruled out across the northwest quadrant
of puerto rico and downwind from the u.S. Virgin islands and el
yunque during the afternoon hours. Under a southeast wind flow, the
coastal areas will observe heat indices between 102 and 107 degree
fahrenheit this afternoon.

Somewhat drier conditions are expected tonight with mostly clear to
partly cloudy skies and limited shower activity. However, the
advection of a patch of moisture and low level convergence will
result in a few passing showers across the u.S. Virgin islands and
the north and east sections of puerto rico.

Another weak tropical wave will bring additional moisture Saturday
afternoon into early Sunday morning. Therefore, locally induced
showers and thunderstorms will be possible, particularly during the
afternoon hours. After the aforementioned wave, a drying trend will
begins as a dense saharan air mass is forecast to arrive and persist
through the early part of the upcoming week.

Long term Monday through Friday...

Monday, a dry saharan air mass will hold across the region resulting
in hazy skies. This air mass will inhibit the development of
widespread showers during the afternoon on Monday. However,
isolated to scattered showers are possible during the afternoon as a
result of diurnal and local effects. The strongest showers are forecast
to develop over the interior and western areas of puerto rico.

Additionally, an isolated thunderstorms can not be ruled out
across the interior and western areas of puerto rico. Develop.

Tuesday, model guidance continues to show the 700 mb high shifting
to the southwest of puerto rico. The shift in the 700 mb high will
allow tropical moisture to pool into the region from the east.

The return of the deep tropical moisture will cause the dry
saharan air to diminish over the region. The tropical moisture
will aid in the development of showers and isolated thunderstorms
during the afternoons through Thursday especially over and south
of the cordillera central.

Friday, a week tropical wave is expected to move near puerto rico
and induce numerous to widespread showers and isolated
thunderstorms. This activity could cause urban and small stream
flooding and mudslides in steep terrain. Then on Saturday a stronger
tropical wave will enter into the region from the east this wave
will also induce moderate to heavy rainfall across most of the
island, which could cause urban and small stream flooding.

Aviation
MainlyVFR conditions with a few passing showers at
times. E-pr usvi leeward islands terminals can expect brief vcsh
with a few shra moving across the terminals but without significant
impact. Tjps can expect shra between 23 09-11z, briefly lowering vis
around 5 sm. Tsra shra will remain possible at tjbq tjsj tjmz
between 23 16-22z. Winds will continue calm to light and vrb, but
gusty in shra. Winds will return from the E ese at 10 to 15 knots
with higher gusts and sea breeze variations after 23 13z.

Marine
Choppy seas up to 6 feet is expected across the atlantic waters
today. Due to seas up to 6 feet small craft operators are urged to
exercise caution. Elsewhere, seas up to 5 feet today. Easterly
winds will prevail today ranging from 10 to 20 kts. There is a
moderate risk of rip current for most of puerto rico beaches
except the western and eastern beaches of the island. In addition,
a moderate risk of rip currents for the southern beaches of
vieques and the northeastern beaches of culebra. Also, there is a
moderate risk of rip currents for the northern and northeast
beaches of the u.S. Virgin islands.

Preliminary point temps pops
Sju 91 78 90 79 30 50 50 50
stt 91 80 88 80 20 50 40 40

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Cam
long term... .Tw


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
JOXP4 - Jobos Bay Reserve, Puerto Rico 10 mi104 min ENE 2.9 80°F 1018 hPa76°F
YABP4 - 9754228 - Yabucoa Harbor, PR 30 mi59 min 87°F 77°F
MGIP4 - 9759110 - Magueyes Islands, PR 34 mi59 min SE 6 G 13 86°F 83°F1017.8 hPa
SJNP4 - 9755371 - San Juan, PR 36 mi59 min E 12 G 16 83°F 84°F1017.9 hPa
41053 - San Juan, PR 38 mi89 min ESE 12 G 14 83°F 84°F4 ft1016.5 hPa (+0.7)
AROP4 - 9757809 - Arecibo, PR 38 mi59 min E 7 G 11
MGZP4 - 9759394 - Mayaguez, PR 43 mi65 min 83°F 86°F1017.9 hPa

Wind History for Penuelas (Punta Guayanilla), PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Link to 5 minute data for TJPS

Wind History from JPS (wind in knots)
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Last 24hr--------------------------------------E5NE5NE5--Calm
1 day ago------------------------------------------------
2 days ago------------------------------------------------

Tide / Current Tables for Playa Cortada, Puerto Rico
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Playa Cortada
Click for Map
Fri -- 04:31 AM AST     0.17 feet Low Tide
Fri -- 06:09 AM AST     Sunrise
Fri -- 10:58 AM AST     Last Quarter
Fri -- 12:40 PM AST     Moonset
Fri -- 03:36 PM AST     0.78 feet Low Tide
Fri -- 06:13 PM AST     0.78 feet High Tide
Fri -- 06:46 PM AST     Sunset
Fri -- 10:54 PM AST     0.80 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.70.50.30.20.20.20.30.40.50.60.70.70.80.80.80.80.80.80.80.80.80.80.8

Tide / Current Tables for Playa de Ponce, Puerto Rico
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Playa de Ponce
Click for Map
Fri -- 04:55 AM AST     0.17 feet Low Tide
Fri -- 06:10 AM AST     Sunrise
Fri -- 10:58 AM AST     Last Quarter
Fri -- 12:40 PM AST     Moonset
Fri -- 04:00 PM AST     0.78 feet Low Tide
Fri -- 05:56 PM AST     0.78 feet High Tide
Fri -- 06:47 PM AST     Sunset
Fri -- 10:37 PM AST     0.80 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Weather Map and Satellite Images
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wmap_A
GOES Local Image of    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (9,2,3,4)
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Ground Weather Radar Station Puerto Rico,Virgin Islands
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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.