Monday, June17, 2019 L-36.com


Marine Weather and Tides
Luis M. Cintrón, PR

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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 5:45AMSunset 7:01PM Monday June 17, 2019 5:23 PM AST (21:23 UTC) Moonrise 7:27PMMoonset 5:56AM Illumination 100% Phase: Full Moon; Moon at 15 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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AMZ725 Coastal Waters Of Southern Usvi Vieques And Eastern Puerto Rico Out 10 Nm- 336 Pm Ast Mon Jun 17 2019
.small craft should exercise caution...
Tonight..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Tuesday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Tuesday night..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Wednesday..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Wednesday 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.
Thursday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated Thunderstorms. Scattered showers.
Friday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Scattered showers.
Saturday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Scattered showers.
AMZ700 336 Pm Ast Mon Jun 17 2019
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure across the western and central atlantic will continue to yield moderate to fresh trade winds across the region during the next several days. This will result in choppy seas across the regional waters and local passages. Increasing winds and seas are forecast, especially for the offshore caribbean waters and the Mona passage, Wednesday through at least Friday.


7 Day Forecast for Marine Location Near Luis M. Cintr�n, PR
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location: 18.32, -65.64     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 172025
afdsju
area forecast discussion
national weather service san juan pr
425 pm ast Mon jun 17 2019

Synopsis Surface high pressure across the central atlantic will
continue to yield brisk easterly trade winds across the area
during the next several days. A fairly dry and stable air mass
along with saharan dust will continue to yield mainly fair weather
conditions across the area through at least mid-week.

Short term Tonight through Wednesday...

a fairly tranquil weather pattern is expected across the area
during the short-term period. A drier than normal air mass along
with suspended saharan dust is expected to prevail through at
least mid-week. This will produce a strong capping inversion at
low-levels, which will serve to limit the development of deep and
organized convection across the area. As a result, most of the
area is expected to observe mainly fair weather conditions with
very limited shower activity expected across western puerto rico
during the afternoon hours as a result of daytime heating and
local effects. Any activity that does develop across western
puerto rico, however, is expected to be minimal with only light
rainfall accumulations expected. Given the presence of saharan
dust, hazy skies are also expected.

Long term Thursday through Monday...

Prev discussion issued 454 am ast Mon jun 17 2019
model guidance continues to suggest a ridge pattern at mid- to
upper-levels through at least Sunday. Then, a tutt-low is forecast
to amplify over cuba and dominican republic weakening the ridge
pattern over puerto rico and the u.S. Virgin islands by Monday. In
addition, a saharan air layer with suspended saharan dust
particles is forecast to linger across the islands through at
least Friday. As a result, hazy skies will be likely through the
work-week. Another tropical wave will move over the eastern
caribbean by late Wednesday night or Thursday, which could
increase the potential for showers and thunderstorms development
on Thursday.

Under the aformentioned atmospheric pattern, trade wind showers
should not be ruled out each day across the windward sections of
the u.S. Virgin islands and puerto rico. Locally induced showers
and thunderstorms will remain possible each afternoon across
western puerto rico. The best chance for shower and thunderstorm
development seems to be on Thursday with the arrival of the
tropical wave. A second tropical wave will move across the
eastern caribbean sea on Sunday. Atmospheric instability could
increase by Monday as the ridge pattern aloft weakens.

Aviation Vfr conds at all terminals durg prd. Sfc wnds fm E 15-20
kts W ocnly hir gusts and sea breeze variations..Bcmg 10kts or less
aft 17 23z. Quick passing -shra shra in and around local islands
durg prd. Suspended saharan dust particulates will continue to
affect the local flying area for the next several days. No sig wx
impacts attm. L lvl wnd mainly fm e-se 15-20 kts durg prd.

Marine Moderate to fresh easterly trade winds up to 20 knots
will result in choppy seas of up to 6 feet across the regional
waters. Therefore, small craft operators are urged to exercise
caution. A further increase in the low-level winds will result in
an increase in the seas by late Wednesday into Thursday,
especially across the offshore caribbean waters and mona passage.

Therefore, small craft advisories may be necessary across these
waters by this period.

For beachgoers, a moderate risk of rip currents is expected across
most of the local beaches of the islands tonight through Tuesday,
except along the coastlines of western puerto rico and saint
thomas and saint john, where the rip current risk will remain
low.

Preliminary point temps pops
Sju 78 89 77 90 20 10 20 20
stt 80 89 79 89 20 20 20 20

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Ds
long term... .Gl


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41056 10 mi54 min E 14 G 18 83°F 1017.1 hPa
CLBP4 - 9752235 - Culebra, PR 18 mi36 min 85°F1018.3 hPa
ESPP4 - 9752695 - Esperanza, PR 18 mi36 min E 9.9 G 17 88°F 85°F1018.2 hPa
YABP4 - 9754228 - Yabucoa Harbor, PR 21 mi36 min 87°F 77°F
41053 - San Juan, PR 27 mi54 min ENE 16 G 19 83°F 1017 hPa
SJNP4 - 9755371 - San Juan, PR 27 mi36 min ENE 13 G 19 83°F 84°F1017.8 hPa
CHAV3 - 9751639 - Charlotte Amalie, VI 38 mi36 min 1018.1 hPa
JOXP4 - Jobos Bay Reserve, Puerto Rico 40 mi99 min E 12 87°F 1019 hPa76°F
41052 - South of St. John, Virgin Islands 47 mi54 min E 16 G 19 84°F 1016.7 hPa
LAMV3 49 mi36 min 83°F 85°F

Wind History for Fajardo, PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR21 mi28 minE 14 G 249.00 miPartly Cloudy87°F75°F67%1017.8 hPa

Wind History from JSJ (wind in knots)
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Tide / Current Tables for Playa de Fajardo, Puerto Rico
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Playa de Fajardo
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Mon -- 03:35 AM AST     0.30 feet Low Tide
Mon -- 04:31 AM AST     Full Moon
Mon -- 05:46 AM AST     Sunrise
Mon -- 05:56 AM AST     Moonset
Mon -- 08:11 AM AST     0.75 feet High Tide
Mon -- 02:14 PM AST     -0.28 feet Low Tide
Mon -- 07:00 PM AST     Sunset
Mon -- 07:26 PM AST     Moonrise
Mon -- 09:39 PM AST     1.71 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.10.70.50.30.30.40.50.70.70.70.60.30.1-0.2-0.3-0.2-00.30.71.11.51.71.71.6

Tide / Current Tables for Vieques Passage, Puerto Rico Current
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Vieques Passage
Click for Map
Mon -- 01:40 AM AST     -0.00 knots Slack
Mon -- 04:31 AM AST     Full Moon
Mon -- 05:15 AM AST     -0.99 knots Max Ebb
Mon -- 05:46 AM AST     Sunrise
Mon -- 05:56 AM AST     Moonset
Mon -- 09:11 AM AST     0.00 knots Slack
Mon -- 11:40 AM AST     0.45 knots Max Flood
Mon -- 02:29 PM AST     -0.00 knots Slack
Mon -- 05:03 PM AST     -0.39 knots Max Ebb
Mon -- 06:59 PM AST     Sunset
Mon -- 07:26 PM AST     Moonrise
Mon -- 07:27 PM AST     0.00 knots Slack
Mon -- 11:07 PM AST     0.81 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.3-0.1-0.5-0.8-1-0.9-0.7-0.4-0.10.20.40.40.30.1-0.1-0.3-0.4-0.3-0.10.20.50.70.8

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 (17,4,5,8)
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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.