Monday, April24, 2017 L-36.com


Marine Weather and Tides
Culebra, PR

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 5:54AMSunset 6:40PM Monday April 24, 2017 9:25 AM AST (13:25 UTC) Moonrise 4:31AMMoonset 4:58PM Illumination 3% Phase: Waning Crescent; Moon at 28 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- 435 Am Ast Mon Apr 24 2017
.small craft should exercise caution...
Today..Southeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Northeast swell 4 to 5 feet. Numerous showers.
Tonight..Southeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Northeast swell 4 to 5 feet. Scattered showers and isolated Thunderstorms.
Tuesday..Southeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. East swell around 4 feet. Numerous showers and isolated Thunderstorms.
Tuesday night..Southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Numerous showers and isolated Thunderstorms.
Wednesday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Scattered showers.
Thursday..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. 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. East swell around 4 feet. Scattered showers.
AMZ700 435 Am Ast Mon Apr 24 2017
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure between bermuda and puerto rico will drift eastward as a surface low pressure enters the western atlantic today. As a result...the prevailing winds will veer to the south-southeast over the next few days. A decaying northerly swell will continue to subside across the atlantic and local passages through late tonight.

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


Area Discussion for - San Juan, PR
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Fxca62 tjsj 240904
afdsju
area forecast discussion
national weather service san juan pr
504 am ast Mon apr 24 2017

Synopsis Moist and unstable conditions will keep the potential
for showers and a few thunderstorms high through at least Tuesday.

Conditions will gradually improve by midweek as mid level ridge
builds over the central caribbean.

Short term Today through Wednesday... Surface low pressure across
the southwestern atlantic and a surface high pressure northeast of
the area are promoting low level wind convergence and favoring a
moist southeasterly wind flow across the region. Precipitable water
is expected to remain above 2 inches across much of the forecast
area. Deep trof aloft is forecast to move from the west through
Wednesday. Providing good divergence aloft to enhance the
development of thunderstorm with periods of heavy rainfall.

For today, shower activity should continue to increase across the
usvi's and the southeastern/interior sections of pr through the rest
of the morning hours. Hi-res models continue to suggest best shower
activity and possible isolated thunderstorm development over the
eastern half of pr into the usvi's later this afternoon into the
evening hours. As trof aloft moves near the region on Tuesday,
organized convection and higher rainfall amounts are expected on
Tuesday afternoon, mainly over and to the north of the cordillera
central as well as across the usvi's. On Wednesday, the base of the
trof should move to the northeast of the forecast area as ridge
builds from the west. However, sufficient moisture will linger
across the islands to aid the development of diurnally induced
afternoon showers over the islands.

Residents across the islands should continue to monitor the progress
of the weather conditions as periods of frequent rainfall can result
in urban and small stream flooding as well as localized flash
flooding.

Long term Thursday through Tuesday... Overall moisture content
will decrease through Saturday as a mid-upper level ridge will
develop over the western and central caribbean. Easterly winds
will return to the local area on Thursday as a strong high pressure
builds over the central atlantic. Weather conditions will remain
fairly stable from Thursday through the weekend as subsidence and
drier air aloft will limit the shower coverage across the local
region.

An upper level trough/tutt will amplify over the tropical atlantic...

northeast of the region by early next week. As the tutt retrogress
across the northeast caribbean islands... Weather conditions will
become unstable between Tuesday and Wednesday next week.

Aviation Bkn-ovc CIGS between fl040-fl090 will continue
across the forecast area with mtn top obscd across mainland pr.

Brief MVFR at times possible across much of the terminals today as
cloudiness and tsra/shra increases over the waters and between the
leeward/usvi/eastern pr terminals during the afternoon/evening
hours. Southeast winds below fl050 will continue at 10-22
knots... Westerlies abv and increasing w/height.

Marine Prevailing winds will shift to the south-southeast over
the next few days as a surface low moves over the western atlantic.

A decaying northerly swell of 5-7 feet will subside through tonight.

Hazardous marine conditions will continue across the offshore waters
and caribbean passages through late tonight. A high risk of rip
currents remains in effect for the atlantic beaches of puerto rico
and culebra.

Preliminary point temps/pops
Sju 88 76 89 76 / 40 40 50 50
stt 85 77 84 76 / 60 60 60 60

Sju watches/warnings/advisories
Pr... High rip current risk through late tonight for culebra-north
central-northeast-northwest-san juan and vicinity-southeast-
western interior.

Vi... None.

Am... Small craft advisory until 8 pm ast this evening for anegada
passage southward to 17n-caribbean waters of puerto rico
from 10 nm to 17n-coastal waters of northwestern puerto
rico out 10 nm-coastal waters of northern puerto rico out
10 nm-coastal waters of northern usvi and culebra out 10 nm-
mona passage southward to 17n.

Small craft advisory until 2 am ast Tuesday for atlantic waters
of puerto rico and usvi from 10 nm to 19.5n.

Small craft advisory until 8 am ast this morning for coastal
waters of southern usvi vieques and eastern puerto rico out
10 nm.

Short term... Ds
long term... .Er


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41052 - South of St. John, Virgin Islands 17 mi56 min E 18 G 21 81°F 1014.3 hPa
CHSV3 - 9751364 - Christiansted Harbor, Virgin Islands 19 mi44 min SE 5.1 G 13 82°F 81°F1015.3 hPa
LAMV3 21 mi38 min 80°F 80°F
LTBV3 - 9751401 - Lime Tree Bay, VI 23 mi38 min SE 7 G 13 81°F 80°F1016.2 hPa
CHAV3 - 9751639 - Charlotte Amalie, VI 25 mi38 min E 6 G 14 81°F 81°F
CLBP4 - 9752235 - Culebra, PR 39 mi38 min 78°F 80°F1015.3 hPa
VQSP4 - 9752619 - Isabel Segunda, Vieques, PR 42 mi38 min SE 7 G 16 80°F
ESPP4 - 9752695 - Esperanza, PR 43 mi38 min SE 15 G 18 80°F 80°F1015.2 hPa

Wind History for Christiansted Harbor, St Croix, VI
(wind in knots)    EDIT      (on/off)   Help
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E4
G13
SE9
G16
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G14
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G11
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G13
SE4
G10
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E7
G14
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G13
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G13
NE8
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G13
NE9
G12
E5
G14
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G12
NE4
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G6
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E9
G16
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G12
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NE6
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G12
E3
G11
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G11
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G6
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G6
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G6
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E2
G6
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G10
NE9
G13

Airport Reports
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Tide / Current Tables for Christiansted Harbor, St Croix, Virgin Islands
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Christiansted Harbor
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Mon -- 04:31 AM AST     Moonrise
Mon -- 05:38 AM AST     0.53 feet High Tide
Mon -- 05:56 AM AST     Sunrise
Mon -- 12:16 PM AST     0.13 feet Low Tide
Mon -- 04:58 PM AST     Moonset
Mon -- 06:37 PM AST     Sunset
Mon -- 07:20 PM AST     0.56 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.30.40.40.50.50.50.50.40.30.20.20.10.10.20.30.40.50.50.60.60.50.50.4

Tide / Current Tables for Benner Bay, St. Thomas, Virgin Islands
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Benner Bay
Click for Map
Mon -- 01:17 AM AST     0.23 feet Low Tide
Mon -- 04:32 AM AST     Moonrise
Mon -- 05:56 AM AST     Sunrise
Mon -- 07:00 AM AST     0.51 feet High Tide
Mon -- 01:16 PM AST     0.13 feet Low Tide
Mon -- 04:58 PM AST     Moonset
Mon -- 06:38 PM AST     Sunset
Mon -- 08:10 PM AST     0.65 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.20.20.30.40.40.50.50.50.40.30.20.20.10.10.20.30.40.50.60.70.60.60.5

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
carb_satellite

GOES Local Image of Puerto Rico    EDIT
Geos

Wind Forecast for (9,2,3,4)
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Ground Weather Radar Station Puerto Rico,Virgin Islands
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weather_mapweather_map weather_map

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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.