Monday, January21, 2019 L-36.com


Marine Weather and Tides
Luis M. Cintr�n, PR

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:56AMSunset 6:11PM Monday January 21, 2019 2:27 PM AST (18:27 UTC) Moonrise 6:53PMMoonset 7:16AM Illumination 99% Phase: Full Moon; Moon at 16 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- 1024 Am Ast Mon Jan 21 2019
Rest of today..East winds around 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers.
Tonight..East winds 10 to 15 knots. Seas 1 to 3 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 8 seconds. Isolated showers.
Tuesday night..Northeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Isolated showers.
Wednesday..East winds 20 to 25 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. East swell 4 to 5 feet. Scattered showers.
Thursday..East winds 20 to 25 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. East swell 4 to 6 feet. Scattered showers.
Friday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. East swell 4 to 6 feet. Scattered showers.
AMZ700 1024 Am Ast Mon Jan 21 2019
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure north of the area will move into the north central atlantic today, as a surface low pressure and associated cold front moves across the west and southwestern atlantic. A long period northwesterly swell is forecast to arrive and spread across the atlantic waters and passages by Tuesday. A strong surface high pressure will move into the western atlantic by Wednesday and fresh east to northeast winds will create choppy and hazardous seas during the second part of the week.


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


Area Discussion for - San Juan, PR
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Fxca62 tjsj 211520
afdsju
area forecast discussion
national weather service san juan pr
1120 am ast Mon jan 21 2019

Update Variably cloudy skies prevailed across the usvi and pr
during the morning hours as scattered showers moved over the
islands. The doppler radar estimated between 0.10-0.30 inches of
rain across southeastern pr. The sju upper air sounding indicated
a light east to southeast steering wind flow. For this afternoon,
the combination of the available moisture with local effects will
lead to the development of showers over west northwest pr. Drier
air and northeast winds are expected overnight and on Tuesday.

Aviation Tempo MVFR conditions possible btw 17z-21z at
tjbq tjmz. Elsewhere, mainlyVFR with sct CIGS btw fl030-fl080.

Latest 12z tjsj sounding indicated E winds at less than 16 kt blo
fl050.

Marine No change from previous discussion.

Prev discussion issued 528 am ast Mon jan 21 2019
synopsis...

a stable weather pattern will persist as a mid to upper level
ridge dominates local conditions. A strong surface high pressure
will be moving across the western atlantic ocean by Wednesday,
tightening the local pressure gradient and increasing the trade
winds. In addition, the remnants of a cold front is forecast to
sink southward near the northeast caribbean by the second part of
this work-week.

Short term... Today through Wednesday...

slightly lower than normal moisture is expected over the local area
for the next few days, however, scattered showers are still expected
across the area. These scattered showers will affect the local
waters, eastern and southern pr and the usvi this morning, and this
afternoon, moderate to locally heavy showers are expected across
western and northwestern pr. That said, showers are expected to
develop across western pr on Tuesday and Wednesday as well but more
for SW pr as the wind will shift to a more northeasterly direction
on Tuesday. A frontal boundary will approach from the northwest, but
is expected to remain far enough to our northwest. A change in wind
direction from the northeast ahead of the front can be expected on
Tuesday, strengthening the wind speed by Wednesday to over 20mph
across much of the forecast area. Bottom line for the short term,
isolated to scattered showers are expected in the overnight hours
across the local waters, north and eastern pr and the usvi,
afternoon showers developing today across w-nw pr and then more
towards the SW sections of pr on Tuesday and Wednesday due to a
change in wind flow.

Long term... Thursday through Monday...

the remnants of an old frontal boundary is forecast to sink
southward into the northeast caribbean Thursday and Friday. In
addition, breezy trade winds will increase moisture convergence
especially across the u.S. Virgin islands and the northern and
eastern puerto rico during the second part of this work-week. A
mid to upper level ridge will limit vertical development during
this period. If model are right, quick passing clouds and showers
can be expected during the overnight and early morning hours
followed by scattered afternoon showers.

The ridge pattern will hold through much of the forecast period.

Model guidance suggested drier than normal conditions, but trade
wind showers should not be ruled out each day. Still no significant
weather feature is expected across the forecast areas during the
period.

Aviation...

increase in moisture will cause vcsh this morning across
most of the local terminals, except tjbq and tjmz. Afternoon shra
across w-nw puerto rico may affect the tjmz and tjbq terminals
between 21 18z and 21 21z. Winds will be light and variable through
21 12z, thereafter from the east at 10-15kt with sea breeze
variations. Winds will decrease after 21 23z and wx is to improve
for the evening hours as well.

Marine...

marine conditions will continue relatively quiet today with seas
ranging between 2 and 5 feet and easterly winds at 10 to 15 knots.

A long period northwesterly swell is expected to arrive across
the atlantic waters by Tuesday. Winds are forecast to increase
between 20 and 25 knots Wednesday and Thursday. As a result,
hazardous marine conditions are expected across the regional
waters between Tuesday night and late Friday night due to the
combination of fresh east to northeast winds and a long period
northwesterly swell. Therefore, small craft advisories are likely
needed by then.

For the beach goers, a moderate risk of rip currents is expected
for the north and east facing beaches of pr, culebra, and saint
croix. Also, some beaches in southeast pr and vieques will expect
a moderate risk.

Preliminary point temps pops
Sju 85 73 84 74 20 20 20 30
stt 84 73 84 73 30 20 10 20

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Ds
long term... .99


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41056 10 mi57 min E 7.8 G 9.7 79°F 1017.7 hPa
CLBP4 - 9752235 - Culebra, PR 18 mi39 min 81°F1018.5 hPa
ESPP4 - 9752695 - Esperanza, PR 18 mi45 min ESE 8.9 G 13 80°F 79°F1018 hPa
YABP4 - 9754228 - Yabucoa Harbor, PR 21 mi39 min 85°F 70°F
41053 - San Juan, PR 27 mi57 min ENE 7.8 G 9.7 79°F 1018 hPa
SJNP4 - 9755371 - San Juan, PR 27 mi45 min ENE 8 G 12 79°F 80°F1018.7 hPa
CHAV3 - 9751639 - Charlotte Amalie, VI 38 mi39 min 79°F 1018.7 hPa
JOXP4 - Jobos Bay Reserve, Puerto Rico 40 mi102 min E 7 82°F 1020 hPa69°F
41052 - South of St. John, Virgin Islands 47 mi57 min E 9.7 G 12 79°F 1017.5 hPa
LAMV3 49 mi39 min 78°F 80°F

Wind History for Fajardo, PR
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Airport Reports
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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 -- 01:17 AM AST     Full Moon
Mon -- 01:58 AM AST     -0.53 feet Low Tide
Mon -- 06:57 AM AST     Sunrise
Mon -- 07:15 AM AST     Moonset
Mon -- 09:21 AM AST     1.87 feet High Tide
Mon -- 03:49 PM AST     0.28 feet Low Tide
Mon -- 06:10 PM AST     Sunset
Mon -- 06:53 PM AST     Moonrise
Mon -- 08:40 PM AST     0.93 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-0.4-0.5-0.4-0.10.30.81.31.71.91.81.61.30.90.50.30.30.40.60.80.90.90.80.5

Tide / Current Tables for Vieques Passage, Puerto Rico Current
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Vieques Passage
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Mon -- 01:17 AM AST     Full Moon
Mon -- 01:52 AM AST     -0.00 knots Slack
Mon -- 04:38 AM AST     -0.52 knots Max Ebb
Mon -- 06:57 AM AST     Sunrise
Mon -- 07:13 AM AST     0.00 knots Slack
Mon -- 07:15 AM AST     Moonset
Mon -- 10:48 AM AST     0.92 knots Max Flood
Mon -- 02:03 PM AST     -0.00 knots Slack
Mon -- 05:33 PM AST     -1.06 knots Max Ebb
Mon -- 06:10 PM AST     Sunset
Mon -- 06:53 PM AST     Moonrise
Mon -- 09:16 PM AST     0.00 knots Slack
Mon -- 11:56 PM AST     0.61 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.2-0-0.3-0.5-0.5-0.4-0.10.30.60.90.90.80.50-0.4-0.8-1-1-0.9-0.5-0.10.30.5

Weather Map and Satellite Images
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wmap_A
GOES Local Image of Puerto Rico    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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Wind Forecast for (13,3,4,5)
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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.