Thursday, May25, 2017 L-36.com


Marine Weather and Tides
Culebra, 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 5:42AMSunset 6:51PM Thursday May 25, 2017 4:14 PM AST (20:14 UTC) Moonrise 5:36AMMoonset 6:48PM Illumination 0% Phase: New Moon; Moon at 0 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- 1032 Am Ast Thu May 25 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. East swell around 4 feet. 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. East swell around 4 feet. Isolated showers.
Friday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers.
Friday night..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 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.
Sunday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 8 seconds. Scattered showers.
Monday..East winds 15 to 20 knots. Seas 1 to 3 feet. Dominant period 8 seconds. Scattered showers.
AMZ700 1032 Am Ast Thu May 25 2017
Synopsis for puerto rico and the uS. Virgin islands waters... A broad surface high pressure will hold over the central atlantic through the weekend. Moderate trade winds will continue through early next week. A 4 to 5 feet long dominant period northeasterly swell will continue across the atlantic waters and passages through late tonight. A tropical wave is expected to increase winds by next Tuesday across the caribbean waters.

7 Day Forecast for Marine Location Near Culebra, PR
   Hourly   EDIT   Help
location: 18.02, -64.67     debug


Area Discussion for - San Juan, PR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxca62 tjsj 251644
afdsju
area forecast discussion
national weather service san juan pr
1244 pm ast Thu may 25 2017

Update
Another hazy day with warm temperatures across the islands
prevailed today. Suspended dust particles will continue to move
across the islands through at least Friday. However, shower
formation is expected across the interior and west puerto rico
during the afternoon hours, elsewhere hazy skies with no shower
activity.

Aviation
Hazy skies with visibilities between 6 and 9 nm are expected to
continue through the fcst period. Shra -shra are possible in the
vcty of tjmz, elsewhere easterly winds between 10 and 20 knots
with higher gusts. Aft 25 233z expect easterly winds at 10 knots
or less.

Marine
A northerly swell at 3 to 5 feet was observed moving across the
nearshore waters. This swell is expected to affect the region
through the evening. Also, the nearshore buoys observed easterly
winds at 15 to 20 knots. Then, mariners can expect seas between 3
and 5 feet and winds at 15 knots or less.

Prev discussion issued 409 am ast Thu may 25 2017
synopsis... Broad surface high pressure will continue across the
central atlantic. Sal will linger through the end of the week.

Overall fair weather expected to continue through the weekend. An
upper level trough is forecast to move over the area by early
next week. A tropical wave is expected to enter the eastern
caribbean by Tuesday.

Short term... Today through Saturday...

partly cloudy skies prevailed across puerto rico and the u.S. Virgin
islands overnight. Doppler radar detected some light showers mainly
across the coastal waters. A very dry airmass will continue to
dominate the local region for the next few days as an upper level
ridge continues dominating the region. Saharan dust will continue
across the region today. As a result, hazy skies can be expected.

Once again, a southeast wind flow will promote higher than normal
temperatures along the northern slopes of puerto rico this
afternoon. As a result, near record maximum temperatures can be
expected.

Upper level ridge will weaken by Friday. As a result, an increase in
moisture is expected for Friday and Saturday with a return to normal
weather conditions with shower and thunderstorm development expected
to occur across the interior and west sections of puerto rico
during the afternoons.

Long term... Sunday through Friday...

an upper level low and an associated trough to the east northeast
of the region is expected to drift northeastward while weakening
Sunday through early in the upcoming week. Another upper level
low and an associated trough is expected to develop over the
southwestern atlantic early in the week, amplifying across the
northeast caribbean Tuesday and Wednesday. Surface high pressure
across the central atlantic is expected to maintain moderate
easterly trade winds across the region until early next week.

Winds are expected to become from the east to east northeast by
mid week and the from the east southeast for the rest of the
period. Optical thickness model guidance suggests a relaxation in
the saharan air layer across the region during the weekend and
for the upcoming week with only some particulates of dust
suspended in the air. Expect the continuation of a relatively dry
weather pattern across the local islands during the weekend with
only the typical diurnal induce afternoon shower activity over
western and interior pr. Latest surface analysis depicted a
tropical wave across the tropical atlantic. This wave will
continue to move westward and approach to the lesser antilles
Sunday and Monday. It is then forecast to move over the eastern
caribbean and over the local islands Tuesday through Wednesday.

This feature in combination with an upper trough should bring an
increase in tropical moisture transport and consequently increase
the chance for showers and thunderstorms over the local islands
and surrounding waters next week.

Aviation...VFR conditions will prevail across all TAF sites through
at least 25 16z. Vcsh can be expected across tjmz and tjbq with
mountain obscurations. Low level winds will be mainly southeast at
10 to 15 kts with higher gusts.

Marine...

long period northeasterly swell of 4 to 5 feet will continue to
affect the atlantic waters and passages through late tonight.

There is a high risk of rip current for northwest through
north central and san juan and vicinity beaches.

Preliminary point temps pops
Sju 78 89 77 89 10 40 40 40
stt 78 87 77 88 10 40 40 40

Sju watches warnings advisories
Pr... High rip current risk until 6 pm ast this evening for north
central-northwest-san juan and vicinity-western interior.

Vi... None.

Am... None.

Short term... Cam
long term... .Cam
aviation... Cam


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
41052 - South of St. John, Virgin Islands 17 mi44 min ENE 14 G 16 83°F 1015.3 hPa
CHSV3 - 9751364 - Christiansted Harbor, Virgin Islands 19 mi44 min ENE 8.9 G 15 85°F 83°F1016.2 hPa
LAMV3 21 mi44 min 83°F 85°F
LTBV3 - 9751401 - Lime Tree Bay, VI 23 mi44 min SE 5.1 G 13 85°F 85°F1017.1 hPa
CHAV3 - 9751639 - Charlotte Amalie, VI 25 mi44 min NE 5.1 G 11 87°F 84°F
CLBP4 - 9752235 - Culebra, PR 39 mi44 min 91°F 84°F1016.5 hPa
VQSP4 - 9752619 - Isabel Segunda, Vieques, PR 42 mi44 min E 6 G 9.9 85°F
ESPP4 - 9752695 - Esperanza, PR 43 mi44 min ESE 8.9 G 13 83°F 85°F1016.3 hPa
41056 45 mi44 min E 12 G 14 82°F 1016.4 hPa

Wind History for Christiansted Harbor, St Croix, VI
(wind in knots)    EDIT      (on/off)   Help
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
3
PM
4
PM
Last
24hr
SE5
G10
E5
G9
SE4
G9
SE2
SE2
SE2
G5
E2
E3
G6
E2
E4
G7
SE2
G5
E2
E6
G9
SE3
SE4
E5
G8
E7
G12
E6
G12
NE9
G15
NE7
G11
E7
G13
E9
G13
E2
G12
NE9
G13
1 day
ago
E6
G9
E4
G9
E5
G8
E3
G8
E3
G7
E2
G5
E3
G8
E5
G8
E2
G5
E2
G6
SE2
G5
E3
G6
E2
G5
SE3
G6
E2
G6
E2
G6
E4
G10
SE6
G11
SE7
G13
SE6
G11
SE5
G10
E5
G10
SE9
G16
SE6
G13
2 days
ago
NE8
G12
NE5
G9
E5
G9
E3
G7
SE3
G6
SE2
SE2
G6
E3
SE3
G7
E4
SE2
E3
G8
E2
G6
SE1
G4
E2
E2
E2
G6
SE3
G9
E4
G9
SE5
G10
E4
G10
E6
G9
E9
G14
NE5
G13

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR76 mi18 minENE 18 G 238.00 miA Few Clouds and Breezy87°F73°F65%1016.2 hPa

Wind History from JSJ (wind in knots)
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
3
PM
4
PM
Last 24hrE10E9E7E10E4E9SE4E3E4E7E5E4E6E6E4E8E9E10NE15NE15E16E18E16NE18
G23
1 day agoE16E15E11E8E8E8E7E9E6E7E5E7E10E8E8E10E9E15
G22
E13
G21
E8
G17
E17SE8SE9
G17
E13
2 days agoE16E13E13E10E12E9E11E10E7E7E5SE3E5SE3SE3E7E9E13NE14NE16NE16E16E17
G22
E16

Tide / Current Tables for Christiansted Harbor, St Croix, Virgin Islands
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Christiansted Harbor
Click for Map
Thu -- 05:36 AM AST     Moonrise
Thu -- 05:43 AM AST     Sunrise
Thu -- 12:23 PM AST     -0.18 feet Low Tide
Thu -- 03:46 PM AST     New Moon
Thu -- 06:47 PM AST     Sunset
Thu -- 06:48 PM AST     Moonset
Thu -- 09:23 PM AST     0.87 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.60.60.50.50.50.40.40.30.20.1-0-0.1-0.2-0.2-0.100.20.40.60.70.80.90.90.8

Tide / Current Tables for Benner Bay, St. Thomas, Virgin Islands
   EDIT      (on/off)   Help   One Week of Data
Benner Bay
Click for Map
Thu -- 05:36 AM AST     Moonrise
Thu -- 05:43 AM AST     Sunrise
Thu -- 01:15 PM AST     -0.15 feet Low Tide
Thu -- 03:46 PM AST     New Moon
Thu -- 06:49 PM AST     Moonset
Thu -- 06:49 PM AST     Sunset
Thu -- 09:53 PM AST     1.01 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.60.50.40.30.30.30.20.20.10.1-0-0.1-0.2-0.1-0.10.10.30.50.70.9111

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 (16,3,4,5)
      (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.