Saturday, May27, 2017 L-36.com


Marine Weather and Tides
Luis M. Cintrón, PR

Version 3.4
What's New / NOTES
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 5:44AMSunset 6:54PM Saturday May 27, 2017 1:24 PM AST (17:24 UTC) Moonrise 7:36AMMoonset 9:01PM Illumination 5% Phase: Waxing Crescent; Moon at 2 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
    EDIT      (on/off)   Help
AMZ725 Coastal Waters Of Southern Usvi Vieques And Eastern Puerto Rico Out 10 Nm- 1014 Am Ast Sat May 27 2017
Rest of today..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
Tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Scattered showers.
Sunday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers.
Sunday night..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 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. Scattered showers and isolated Thunderstorms.
Tuesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Scattered showers and isolated Thunderstorms.
Wednesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated Thunderstorms. Scattered showers.
AMZ700 1014 Am Ast Sat May 27 2017
Synopsis for puerto rico and the uS. Virgin islands waters... A broad surface high pressure will remain anchored over the central and northeast atlantic through the weekend. This will result in moderate easterly winds. A tropical wave is forecast to reach the eastern caribbean by early next week. A tutt low is also forecast to develop north and west of the region during this time. This forecast pattern should increase the potential for Thunderstorms across the regional waters as well as increase local winds and seas next week.

7 Day Forecast for Marine Location Near Luis M. Cintrón, PR
   Hourly   EDIT   Help
location: 18.32, -65.64     debug


Area Discussion for - San Juan, PR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxca62 tjsj 271435
afdsju
area forecast discussion
national weather service san juan pr
1035 am ast Sat may 27 2017

Update Mainly fair weather has been observed across the local
islands with the exception of brief showers across the local
waters, usvi and eastern pr. These showers have left very minimal
amounts of rain. However, based on the latest observations and
expected weather, the shower activity is expected to increase as
the day progresses as the local effects, diurnal heating and
available moisture combine today. The northwest quadrant of pr has
a chance of more persistent showers and isolated thunderstorms
this afternoon as sea breeze convergence plays a role in that
area. No changes were made to the inherited forecast since
everything is still in alignment with the inherited forecast.

Aviation No changes from the previous discussion. Brief shra
expected through the local area may cause vcsh across the local
terminals today. Vcts possible at tjmz and tjbq this afternoon.

Winds from the e-ese with sea breeze variations at around 15kt
with occasional gusts. Shra activity to diminish after 27 23z and
winds to diminish as well into the overnight hours.

Marine Local buoys are confirming that the local marine
forecast is on track. Seas will be mainly between 2 and 5 feet
today with winds up to 15 knots. Moderate risk of rip currents for
the northern beaches of pr and culebra, eastern tip of vieques and
some of the northern and eastern beaches of saint croix and the
northwestern beaches of saint thomas.

Prev discussion issued 455 am ast Sat may 27 2017
synopsis... Tutt low and associated trough across the lesser
antilles will lift northwards across the region over the weekend.

Broad high pressure ridge across the central atlantic will hold
and allow better transport of trade wind moisture across the
forecast areas overnight and through the weekend. A tropical wave
will approach the local area Monday into Tuesday next week.

Short term... Today through Tuesday morning...

clear to partly cloudy skies prevailed across the local islands
overnight and early this morning with a few passing showers noted
across the surrounding waters, usvi and E pr. Rainfall accumulations
associated with these showers were minimal. Overnight temperatures
were in the upper 70s to low 80s across the lower elevations and in
the low 70s across the higher elevations. Winds were mostly light
and variable.

Although a tutt low to the northeast of the forecast area will
continue to move away while weakening, trofiness will return to the
northeast caribbean late Monday into Tuesday. This feature will
interact with an approaching tropical wave to result in a better
chance for showers and thunderstorms Monday afternoon into Tuesday.

Meanwhile, during the weekend as well as Monday continue to expect
trade wind showers across windward areas in the morning hours
followed by locally induced afternoon showers and thunderstorms
across west and north portions of puerto rico. Elsewhere, mainly
fair weather will continue to prevail with a few passing showers
possible. With the heaviest showers during the afternoon hours,
minor urban flooding likely.

Long term... Tuesday afternoon through Sunday...

for Tuesday, a tropical wave is expected to affect the region
with an increase in showers and thunderstorms activity. A moist
weather pattern is forecast to prevail across the northeast
caribbean next work week as a series of tropical waves and
trofiness aloft affect the region.

Aviation...VFR conds expected at all TAF sites through the morning
hours with vcsh possible at the leeward and usvi terminals as well
as jsj. Aft 27 16z shra tsra expected over NE pr and this may result
in MVFR conds in and around jmz jbq. Vcsh at jsj also possible this
afternoon. Easterly winds 10-15 knots with some sea breeze
variations after 27 12z.

Marine... Seas between 3 to 5 feet and east winds at 5 to 15 knots are
expected across much of the local waters and passages. There is
a moderate risk of rip currents across the north facing beaches
of puerto rico and culebra and saint croix in the u.S. Virgin
islands.

Preliminary point temps pops
Sju 90 78 89 77 40 20 20 20
stt 88 78 89 78 30 30 20 30

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Ja
long term... .99


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRDP4 - 9753216 - Fajardo, PR 1 mi67 min ENE 8.9 G 11 82°F 74°F
41056 11 mi55 min E 12 G 16 82°F 1017.4 hPa
VQSP4 - 9752619 - Isabel Segunda, Vieques, PR 16 mi67 min E 4.1 G 8 83°F
CLBP4 - 9752235 - Culebra, PR 18 mi67 min 88°F 84°F1017.6 hPa
ESPP4 - 9752695 - Esperanza, PR 18 mi67 min SE 11 G 17 83°F 84°F1017.4 hPa
YABP4 - 9754228 - Yabucoa Harbor, PR 21 mi67 min E 8.9 G 12
SJNP4 - 9755371 - San Juan, PR 27 mi73 min ESE 4.1 G 11 82°F 83°F1017.8 hPa
41053 - San Juan, PR 27 mi55 min ENE 14 G 16 82°F 1016.8 hPa
CHAV3 - 9751639 - Charlotte Amalie, VI 38 mi67 min ENE 5.1 G 8.9 85°F 84°F
JOXP4 - Jobos Bay Reserve, Puerto Rico 40 mi100 min E 7 87°F 1018 hPa73°F
41052 - South of St. John, Virgin Islands 47 mi85 min E 12 G 16 82°F 83°F4 ft1016.5 hPa (+0.0)
LAMV3 49 mi67 min 83°F 84°F

Wind History for Fajardo, PR
(wind in knots)    EDIT      (on/off)   Help
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
Last
24hr
NE10
E7
E9
G13
SE8
G13
E9
G13
SE9
E8
G12
E9
E7
G10
E11
E7
G11
E9
E7
E9
G12
E10
E8
G12
E12
G15
E8
G12
E8
G12
E9
G14
E8
G13
E8
G12
NE12
G15
E8
G11
1 day
ago
E7
G11
E5
G11
E8
G11
E10
NE13
NE12
G15
E12
E13
E14
E15
E12
E13
E12
G15
E8
E9
E7
G10
E5
G8
E7
G10
E3
G6
E9
E9
NE8
E7
E6
2 days
ago
E5
G13
E7
G15
SE7
G13
SE5
G11
SE6
G13
SE6
G12
SE8
G12
E8
G12
E10
G13
E8
G12
SE4
G7
E9
E6
G11
E12
E11
E9
E8
E9
E9
E7
E7
E8
E9
SE6
G11

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR21 mi29 minENE 1510.00 miPartly Cloudy90°F72°F56%1017 hPa

Wind History from JSJ (wind in knots)
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
Last 24hrNE13NE12
G22
3S5CalmE8E6E6E5E5E4E4E4SE4SE3CalmSE3E5E8E12E10NE14NE17NE15
1 day agoE18E16NE18
G23
NE16E13E13E10E11E13E11E7E5SE3SE4CalmCalmCalmSE3CalmSE8E5NE9NE13NE12
2 days agoSE8SE9
G17
E13E10E9E7E10E4E9SE4E3E4E7E5E4E6E6E4E8E9E10NE15NE15E16

Tide / Current Tables for Playa de Fajardo, Puerto Rico
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Playa de Fajardo
Click for Map
Sat -- 04:34 AM AST     0.17 feet Low Tide
Sat -- 05:46 AM AST     Sunrise
Sat -- 07:36 AM AST     Moonrise
Sat -- 09:34 AM AST     0.90 feet High Tide
Sat -- 03:36 PM AST     -0.41 feet Low Tide
Sat -- 06:53 PM AST     Sunset
Sat -- 09:01 PM AST     Moonset
Sat -- 10:52 PM AST     1.92 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.51.10.70.40.20.20.30.50.70.90.90.70.50.1-0.2-0.4-0.4-0.20.10.61.11.61.81.9

Tide / Current Tables for Vieques Passage, Puerto Rico Current
   EDIT      (on/off)   Help   One Week of Data
Vieques Passage
Click for Map
Sat -- 02:46 AM AST     -0.00 knots Slack
Sat -- 05:46 AM AST     Sunrise
Sat -- 06:17 AM AST     -1.14 knots Max Ebb
Sat -- 07:36 AM AST     Moonrise
Sat -- 10:00 AM AST     0.00 knots Slack
Sat -- 12:41 PM AST     0.64 knots Max Flood
Sat -- 03:36 PM AST     -0.00 knots Slack
Sat -- 06:20 PM AST     -0.57 knots Max Ebb
Sat -- 06:52 PM AST     Sunset
Sat -- 08:56 PM AST     0.00 knots Slack
Sat -- 09:01 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.80.4-0.1-0.6-1-1.1-1.1-0.8-0.4-00.40.60.60.50.2-0.1-0.4-0.6-0.5-0.300.40.7

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
carb_satellite

GOES Local Image of Puerto Rico    EDIT
Geos

Wind Forecast for (13,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Puerto Rico,Virgin Islands
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.