Monday, October23, 2017 L-36.com


Marine Weather and Tides
Jobos, 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 6:19AMSunset 5:57PM Monday October 23, 2017 7:29 AM AST (11:29 UTC) Moonrise 9:28AMMoonset 9:00PM Illumination 11% 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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AMZ735 Coastal Waters Of Southern Puerto Rico Out 10 Nm- 414 Am Ast Mon Oct 23 2017
Today..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
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.
Tuesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
Tuesday night..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers.
Wednesday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
Thursday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
Friday..Northeast winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
AMZ700 414 Am Ast Mon Oct 23 2017
Synopsis for puerto rico and the uS. Virgin islands waters... Surface high pressure will continue north of the area to promote moderate to locally fresh trade winds through at least midweek. A gentle to moderate east southeast wind flow is then expected by Wednesday and into the end of the work week.

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 230753
afdsju
area forecast discussion
national weather service san juan pr
353 am ast Mon oct 23 2017

Synopsis A developing mid to upper level trough will continue
to become amplified while sinking southwards across the northern
leeward islands and into the eastern caribbean through Wednesday.

Strong surface high pressure will remain anchored across the west
and central atlantic to maintain a moderate east to southeast
trade wind flow through the end of the work week. A weak tropical
wave is forecast to enter and move across the eastern caribbean by
mid week.

Short term Isolated trade winds passing showers will continue to
affect the usvi and eastern sections of puerto during the morning
hours until at least mid week. Mostly fair weather conditions
expected elsewhere over land areas across puerto rico and the u.S.

Virgin islands. An upper level trough just to the northeast of
puerto rico will sink slowly southward. However, puerto rico and
the usvi are expected to remain under the upper level convergent
pattern of the trough. This will continue to limit the thunderstorms
development for the next couple of days. Some shower development
is expected each afternoon with a couple of weak thunderstorms
possible across western and interior sections of puerto rico. A
weakening upper level ridge will also aid to inhibit the development
of significant showers and thunderstorms over the region for the
next couple of days. In facts, latest tjsj upper air sounding as
well as the satellite derived precipitable water products both
suggest continued dry and stable airmass to persist through at
least mid week. No significant weather feature or impacts are
anticipated at this time. An increase in moisture is expected by
the end of the week.

Long term The prevailing easterly trades will bring occasional
patches of shallow moisture to the region with a seasonal weather
pattern expected through Wednesday. The local region should remain
on the convergent side of the amplifying upper trough through Wednesday.

Thereafter, high pressure ridge will build aloft and spread westward
across the area on Thursday and Friday. An approaching tropical wave
along with weak easterly pertubations propagating westward in the
prevailing easterlies will provide sufficient moisture to the region
to support daily showers and isolated thunderstorms development each
day through the end of the week. Occasional passing showers can therefore
be expected across the usvi and eastern puerto rico during the early
morning hours followed by locally induced showers and thunderstorms
each afternoon. The main activity should be across the interior and
west sections of pr with occasional shower activity in and around
the san juan metro area during the afternoon hours. An induced surface
trough is expected to develop and shift westward across the region
Friday through the weekend. This will favor a fairly moist and unstable
airmass and consequently support a better chance for showers and thunderstorms
development across the islands and coastal waters through the next weekend.

Aviation MostlyVFR condition expected across the local flying
area during the forecast period. Only vicinity shra are possible
over the leeward, usvi and eastern pr TAF sites sites until 23 15z.

Isold-sct shra and a couple of -tsra expected from 23 16z-23 22z
over central mountain range of pr affecting mostly tjmz and tjbq.

Sfc winds will continue light and variable until 23 12z, becoming
from e-se at 10 to 15 kts with some higher gust along coastal areas
after 23 13z-23 23z.

Marine Seas generally between 2 to 5 feet and winds 10 to 15 knots
are expected to prevail across the regional waters and local passages
today. Overall tranquil marine conditions are expected to prevail much
of the week.

Preliminary point temps pops
Sju 87 77 88 76 30 30 30 30
stt 87 77 87 78 30 30 30 30

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Jf
long term... .Ram


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
YABP4 - 9754228 - Yabucoa Harbor, PR 19 mi41 min 78°F
42085 - Southeast of Ponce, PR 20 mi89 min N 9.7 G 12 82°F 84°F1013.9 hPa (+0.5)
SJNP4 - 9755371 - San Juan, PR 37 mi47 min 83°F1015.9 hPa
41053 - San Juan, PR 38 mi59 min ESE 7.8 G 7.8 81°F 1014.7 hPa
41056 44 mi89 min ENE 12 G 16 82°F 1015.1 hPa (+0.4)
AROP4 - 9757809 - Arecibo, PR 48 mi41 min S 7 G 8.9

Wind History for Yabucoa Harbor, PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ponce, Mercedita Airport, PR23 mi34 minVar 2 miFair76°F66°F73%1015.6 hPa

Wind History from JPS (wind in knots)
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Last 24hr454SE13
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E7E4----------------------2
1 day ago35E8
G13
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SE13SE13
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SE63----------------------2
2 days agoE3E9
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E4E3E1222E22E2
G12
2NE333

Tide / Current Tables for Las Mareas, Puerto Rico
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Las Mareas
Click for Map
Mon -- 01:56 AM AST     -0.01 feet Low Tide
Mon -- 06:20 AM AST     Sunrise
Mon -- 09:27 AM AST     Moonrise
Mon -- 01:18 PM AST     0.62 feet High Tide
Mon -- 05:57 PM AST     Sunset
Mon -- 09:00 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0-0-000.10.10.20.30.40.50.60.60.60.60.60.60.50.50.40.30.30.20.20.1

Tide / Current Tables for Arroyo, Puerto Rico
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Arroyo
Click for Map
Mon -- 01:29 AM AST     0.21 feet Low Tide
Mon -- 06:20 AM AST     Sunrise
Mon -- 09:27 AM AST     Moonrise
Mon -- 02:21 PM AST     0.87 feet Low Tide
Mon -- 02:32 PM AST     0.95 feet High Tide
Mon -- 05:56 PM AST     Sunset
Mon -- 08:56 PM AST     0.88 feet High Tide
Mon -- 09:00 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.50.20.20.30.40.50.60.80.90.910.90.90.90.910.90.90.90.90.90.90.90.8

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 (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.