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 12:59 AM AST (04:59 UTC) Moonrise 5:36AMMoonset 6:48PM Illumination 0% Phase: New Moon; Moon at 29 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- 925 Pm Ast Wed May 24 2017
Rest of tonight..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. East swell around 4 feet. Isolated showers.
Thursday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. East swell around 4 feet. Isolated showers.
Thursday night..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 10 to 15 knots. Seas 1 to 3 feet. Dominant period 8 seconds. Scattered showers.
AMZ700 925 Pm Ast Wed May 24 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 Thursday night. 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 250126
afdsju
area forecast discussion
national weather service san juan pr
926 pm ast Wed may 24 2017

Update Continue to expect a fair weather pattern with mostly
clear skies and hazy conditions through the end of the workweek
due to a mid level ridge pattern across the forecast area and
suspended dust particles. Warm to hot temperatures will also
continue to prevail across the northern slopes of puerto rico
under an east southeast wind flow. As the ridge pattern erodes the
upcoming weekend, an increase in low level moisture is expected
with a better chance for showers and thunderstorms.

Aviation Vfr conds throught the forecast period. Although
hazy skies will continue, visibilities should remain p6sm.

Light and variable winds overnight.

Marine No change to previous discussion. A 4 to 5 feet long
dominant period northeasterly swell will continue across the
atlantic waters and passages through late Thursday night, peaking
overnight. A high rip current risk is in effect for the northern
beaches of puerto rico and culebra through Thursday.

Prev discussion issued 500 pm ast Wed may 24 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 Friday...

hazy skies and hot temperatures were observed today across the
forecast area. A few clouds developed over the mountains and
northwest portions of pr during the afternoon hours, however no
significant rainfall was detected over land areas. The temperature
at the international airport in san juan reached 93 degrees, this
tied the record set in 1990.

Limited shower activity is expected to continue across the
islands. Saharan air layer will continue to result in hazy skies
and dry mid levels. Above normal temperatures will continue
through the short term period. A slight increase in moisture is
expected on Friday afternoon, this moisture in combination with
diurnal effects will lead to better chances for showers across the
islands. However, no significant rainfall amounts are expected at
the moment.

Long term from previous discussion... Saturday through
Thursday...

an upper level low and an associated trough is forecast to
develop just to the east northeast of the region during the
upcoming weekend. This feature is expected to erode the mid to
upper level ridge that persisted over the region for the last few
days. However, the upper trough axis is forecast to remain east of
the region, maintaining the islands on the subsidence side of the
trough. Surface high pressure across the central atlantic is
expected to maintain moderate easterly trade winds across the
region until early next week. Optical thickness model guidance
suggests that the saharan air layer will persist over the region
through most of the work week and into the upcoming weekend,
resulting in hazy and a relatively dry airmass across the local
islands. Latest surface analysis depicted a tropical wave across
the tropical atlantic. This wave will continue to move westward
and approach to the lesser antilles late Monday and Tuesday. It is
then forecast to move over the eastern caribbean and over the
local islands Tuesday through Wednesday. This feature 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... MainlyVFR conditions will prevail during the next 24
hours. Surface winds e-ese at 10-15 knots. Light and variable
overnight. Hz due to saharan dust will continue but vsby should
remain p6sm.

Marine... San juan and rincon buoys were indicating a 13-14 second
northeasterly swell at 3-4 feet during the last couple of hours.

Winds are near 15 knots from the east with some gusts in the low
20s. A high rip current risk is in effect for the northern beaches
of puerto rico and culebra through Thursday. Northerly swell will
peak overnight.

Preliminary point temps pops
Sju 78 89 77 88 10 10 10 20
stt 79 89 78 87 10 10 20 40

Sju watches warnings advisories
Pr... High rip current risk until 6 am ast Thursday for culebra-
northeast-southeast.

High rip current risk through Thursday afternoon for north
central-northwest-san juan and vicinity-western interior.

Vi... None.

Am... None.

Short term... Om
long term... .Om


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 mi60 min E 14 G 16 82°F 83°F4 ft1017.4 hPa (+1.0)
CHSV3 - 9751364 - Christiansted Harbor, Virgin Islands 19 mi42 min ESE 2.9 G 11 81°F 84°F1018.2 hPa
LAMV3 21 mi42 min 81°F 83°F
LTBV3 - 9751401 - Lime Tree Bay, VI 23 mi42 min E 6 G 12 82°F 84°F1019 hPa
CHAV3 - 9751639 - Charlotte Amalie, VI 25 mi42 min ESE 1.9 G 2.9 81°F 84°F
CLBP4 - 9752235 - Culebra, PR 39 mi42 min 81°F 83°F1018.5 hPa
VQSP4 - 9752619 - Isabel Segunda, Vieques, PR 42 mi42 min E 1.9 G 2.9 80°F
ESPP4 - 9752695 - Esperanza, PR 43 mi42 min ESE 7 G 9.9 81°F 84°F1018.2 hPa
41056 45 mi60 min 82°F

Wind History for Christiansted Harbor, St Croix, VI
(wind in knots)    EDIT      (on/off)   Help
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
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
Last
24hr
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
SE5
G10
E5
G9
SE4
G9
SE2
SE2
SE2
G5
E2
E3
G6
E2
1 day
ago
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
E6
G9
E4
G9
E5
G8
E3
G8
E3
G7
E2
G5
E3
G8
E5
G8
E2
G5
2 days
ago
SE2
SE3
SE1
E2
E2
E7
G11
SE4
G9
E4
G8
E6
G11
E7
G12
E9
G12
NE7
G15
NE8
G12
NE5
G9
E5
G9
E3
G7
SE3
G6
SE2
SE2
G6
E3
SE3
G7

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
Click EDIT to select an airport
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 (0,6,7,8)
      (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.