Monday, May27, 2019 L-36.com


Marine Weather and Tides
Culebra, 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 5:42AMSunset 6:51PM Monday May 27, 2019 8:15 AM AST (12:15 UTC) Moonrise 1:14AMMoonset 1:07PM Illumination 40% Phase: Third Quarter Moon; Moon at 23 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- 415 Am Ast Mon May 27 2019
Today..Southeast winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Scattered showers.
Tonight..Southeast winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Northeast swell around 4 feet after midnight. Scattered showers.
Tuesday..Southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Northeast swell around 4 feet. Scattered showers in the morning, then isolated Thunderstorms in the afternoon.
Tuesday night..East winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Scattered 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. Numerous showers and isolated Thunderstorms.
Thursday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Scattered showers and isolated Thunderstorms.
Friday..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 415 Am Ast Mon May 27 2019
Synopsis for puerto rico and the uS. Virgin islands waters... A light to moderate southeasterly wind flow will continue across the regional waters for the next few days. A slight increase in seas is also forecast by tonight through midweek as a northerly swell arrives and spreads across the atlantic waters and local passages. Isolated Thunderstorm activity is expected to increase across the regional waters through at least Thursday.


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 270855
afdsju
area forecast discussion
national weather service san juan pr
455 am ast Mon may 27 2019

Synopsis Surface high pressure across the western atlantic is
slowly moving east, to the north of the local islands. There is a
stronger surface high pressure across the northeastern atlantic.

This setup is causing a light to moderate southeasterly winds.

Higher than normal available moisture is expected to move in
today, and linger through most of the workweek. Upper trough will
cause an increase in instability mid to late this week. A rainy
weather pattern is expected this week.

Short term Today through Wednesday... .

A wetter pattern is forecast to persist through the short-term
period, as a result of deep layered tropical moisture out of the
caribbean pooling across puerto rico and the u.S. Virgin islands.

During this time precipitable water values will range from 1.9 to
2.2 inches across the region. Also, scattered to numerous showers
are forecast to develop each day during the afternoon. Rainfall
amounts each day will range from 0.50 to 1.00 inches with higher
amounts in isolated areas. Additionally, soils are saturated from
previous days rainfall and any additional rainfall could lead to
urban and small stream flooding, as well as, ponding of water on
roadways.

This morning moderate to heavy rainfall fell across portions of
northwestern, eastern, interior of puerto rico. Elsewhere, light to
moderate showers were observed across the u.S. Virgin islands and
other parts of puerto rico. Later this morning light to moderate
showers are possible across portions of eastern puerto rico and the
u.S. Virgin islands through mid morning. Then scattered to numerous
showers and isolated thunderstorms are forecast to develop over the
interior, and western areas of puerto rico this afternoon. These
showers will develop as a result of significant surface heating,
abundant low-level moisture and local effects. Also, a weak jet to
the north of puerto rico will provided modest upper-level
instability today which will aid in showers and isolated
thunderstorm development.

Tuesday, weak troughiness develops to the northwest of puerto rico
and is expected to continue to deepen north of the area through
Wednesday. Tuesday and Wednesday scattered showers and isolated
thunderstorms are forecast to develop during the afternoon across
most areas of puerto rico. The combination of deep layered tropical
moisture through the entire atmospheric column, increasing
instability as a result of a developing low-level jet and deepening
upper-level trough will induce showers and isolated thunderstorms.

In addition, local and diurnal effects will help aid in showers and
isolated thunderstorm develop. Therefore, moderate to heavy rainfall
is likely during the afternoon for most of the island.

However, current guidance shows that mid to upper-level clouds might
linger during the early mornings through mid afternoon across
eastern, interior and western areas of puerto rico. If these clouds
develop they will limit surface heating and delay shower and
thunderstorm development.

Long term Thursday through Tuesday...

the deep moisture is expected to linger into Thursday, so at least
some widely scattered to numerous showers and isolated
thunderstorms are expected during the day. However, slightly drier
air is expected to move in for Friday, which could cause a
decrease in shower activity over the local area. That said, there
is an upper trough with axis just to our west for Friday, which
will increase instability, but the models have been somewhat
inconsistent on the exact location to the jury is still out on
this. Next weekend looks like it will be rainy, the available
moisture will be near or slightly above normal and we may have the
upper tough still over the general area, so enhanced shower and
thunderstorm activity is possible in the afternoons over puerto
rico with scattered showers elsewhere.

Aviation Vfr conds are forecast to continue across all terminal
sites through 27 16z with an occasional iso sct shra. This afternoon
shra isold tsra mainly ovr ctrl and W pr and vcty
tjsj tjmz tjbq tjnr til 28 03. Sfc winds out of the east at 10 to 15
kts with sea breeze variations.

Marine Seas will be up to 5 feet today with winds up to 15
knots, but a northerly swell is expected to move in tonight,
causing the local seas to increase up to 6 feet across the
atlantic waters. There is a moderate risk of rip currents today,
but a high risk is expected starting this evening across the
northwest to northeast beaches of puerto rico, north beaches of
culebra and saint thomas.

Preliminary point temps pops
Sju 88 77 87 75 40 40 50 60
stt 86 77 85 76 30 30 40 60

Sju watches warnings advisories
Pr... High rip current risk from this evening through Tuesday
afternoon for culebra-mayaguez and vicinity-north central-
northeast-northwest-san juan and vicinity-southeast.

Vi... High rip current risk from this evening through Tuesday
afternoon for st.Thomas... St. John... And adjacent islands.

Am... High rip current risk from this evening through Tuesday
afternoon for coastal waters of southern usvi vieques and
eastern puerto rico out 10 nm.

Short term... Tw
long term... .Ja


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41052 - South of St. John, Virgin Islands 17 mi46 min ENE 9.7 G 12 81°F 1013.6 hPa
CHSV3 - 9751364 - Christiansted Harbor, Virgin Islands 19 mi34 min ENE 1.9 G 7 78°F 82°F1014.3 hPa
LAMV3 21 mi28 min 79°F 82°F
LTBV3 - 9751401 - Lime Tree Bay, VI 23 mi28 min SE 6 G 8 78°F 84°F1015.1 hPa
CHAV3 - 9751639 - Charlotte Amalie, VI 25 mi34 min 79°F 1014.9 hPa
CLBP4 - 9752235 - Culebra, PR 39 mi34 min 79°F 83°F1015 hPa
ESPP4 - 9752695 - Esperanza, PR 43 mi34 min ENE 2.9 G 6 79°F 82°F1015 hPa
41056 45 mi46 min E 9.7 G 12 79°F 1013.6 hPa

Wind History for Christiansted Harbor, St Croix, VI
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR76 mi20 minE 410.00 miPartly Cloudy82°F75°F79%1014.9 hPa

Wind History from JSJ (wind in knots)
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Last 24hrNE8NE10NE10NE13NE10NE10NE13E13NE15E13E12NE9E11E10E8SE4E5E4CalmCalmCalmCalmCalmE4
1 day agoE9E14NE17NE15E15E17
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NE15NE14E14E11E9E9E8E8E7E4E4E3CalmCalmCalmCalm3
2 days agoSE10SE12
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SE64S6SE5CalmCalmE4E5E5CalmSE3E4SE3SE3CalmE4CalmE9

Tide / Current Tables for Christiansted, St. Croix Island, Virgin Islands
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Christiansted
Click for Map
Mon -- 01:13 AM AST     Moonrise
Mon -- 02:39 AM AST     0.74 feet High Tide
Mon -- 05:43 AM AST     Sunrise
Mon -- 09:37 AM AST     0.47 feet Low Tide
Mon -- 01:07 PM AST     Moonset
Mon -- 02:15 PM AST     0.58 feet High Tide
Mon -- 06:48 PM AST     Sunset
Mon -- 07:52 PM AST     0.38 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.70.70.70.70.60.60.50.50.50.50.50.50.60.60.60.50.50.40.40.40.40.40.5

Tide / Current Tables for St. Croix, Lime Tree Bay, Virgin Islands
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St. Croix
Click for Map
Mon -- 01:13 AM AST     Moonrise
Mon -- 02:42 AM AST     0.53 feet High Tide
Mon -- 05:43 AM AST     Sunrise
Mon -- 01:07 PM AST     Moonset
Mon -- 03:20 PM AST     0.15 feet Low Tide
Mon -- 06:48 PM AST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.50.50.50.50.50.50.40.40.40.30.30.20.20.20.20.20.20.20.20.20.30.30.40.4

Weather Map and Satellite Images
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wmap_A
GOES Local Image of    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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (8,2,3,4)
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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.