Saturday, February23, 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 6:41AMSunset 6:24PM Saturday February 23, 2019 11:42 AM AST (15:42 UTC) Moonrise 10:38PMMoonset 9:52AM Illumination 82% Phase: Waning Gibbous; Moon at 19 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- 944 Am Ast Sat Feb 23 2019
.small craft advisory in effect through Sunday morning...
Rest of today..East winds 15 to 20 knots. Seas 4 to 7 feet with occasional seas up to 8 feet. Dominant period 11 seconds. Northeast swell 4 to 5 feet. Isolated showers.
Tonight..East winds 15 to 20 knots. Seas 4 to 7 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Northeast swell 4 to 5 feet. Isolated showers.
Sunday..East winds 15 to 20 knots. Seas 4 to 7 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Sunday night..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Monday..Northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Northeast swell around 4 feet. Scattered showers.
Tuesday..Northeast 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. Scattered showers.
Wednesday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 12 seconds. Northeast swell 4 to 6 feet. Scattered showers.
AMZ700 944 Am Ast Sat Feb 23 2019
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure will remain north of the region until it weakens today. Then, another strong surface high pressure will move over the western atlantic and north of the area late this weekend into early next week. These features will promote a fresh to locally strong easterly wind flow across the regional waters, Thus generating hazardous marine conditions during the next several days.


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 230833
afdsju
area forecast discussion
national weather service san juan pr
433 am ast Sat feb 23 2019

Synopsis A surface high pressure will maintain a fresh to
locally strong easterly wind flow through most of the forecast
period. Although fragments of moisture will move across the
region from time-to-time, a mostly stable weather pattern is
expected as a ridge aloft will continue to suppress the
development of deep convection. However, an increase in moisture
transport and a better chance for showers is expected by midweek
as the ridge aloft weaken somewhat. Due to wind driven seas,
hazardous marine and coastal conditions are expected through most
of the forecast period.

Short term Today through Monday...

a surface high pressure just east of the bahamas and across the
western atlantic will prevail through at least Monday. This will
maintain breezy conditions for the next several days. Available
moisture will remain limited through the weekend, causing mainly
fair weather conditions. Only shallow moisture patches are
expected to move across the local generating mostly isolated
showers across the local waters through at least Monday.

Long term Tuesday through Sunday...

the latest model guidance suggests that as a surface high
pressure moves off the east coast of the united states and north
of the region, a fresh to locally strong wind flow will hold
across the forecast area through the end of the workweek. At the
same time, the ridge aloft is expected to erode somewhat as it
slowly drifts and spreads eastward over the central atlantic while
a deep polar trough moves into the atlantic. This combination
will weaken the trade wind cap and allow for an increase in
moisture transport across the forecast area while generating
favorable upper level conditions. If current model guidance
continues to hold on its current solution, a better chance for
shower activity can be expected by midweek and continuing through
the long-term forecast period.

Aviation MainlyVFR conditions are expected across the terminals
throughout the period. Vcsh -shra are possible across tist tisx tjsj
terminals through 23 09z-14z, which may result in brief MVFR
conditions. A few -shra are also possible across tjmz between 23 16z-
22z. Winds will continue from the e-ene around 10 kts through
22 12z, increasing to 15-20 kts with higher gusts.

Marine A surface high pressure located north of the region will
continue to promote a fresh to strong easterly wind flow across
the local islands today. This will result in hazardous marine
conditions with seas up to 8 feet and winds ranging between 15 and
20 knots with higher gusts. Thus, small craft advisories (sca)
continue in effect for all marine zones but coastal waters south
and southwest of puerto rico, where small craft operators are
urged to exercise caution. Marine conditions will begin to
progressively improve this evening and continuing through Monday
as the local pressure gradient weakens. However, this will be
short-lived as another strong surface high pressure is expected
to generate hazardous marine conditions by Tuesday.

For the coastal areas, a high rip current risk continues in
effect for beaches along the northwest to northeast coast of
puerto rico, as well as along the north coast of culebra, saint
thomas and saint croix. Although coastal condition are expected to
progressively improve Sunday morning into Monday, a high risk of
rip currents will be required by late Monday night into Tuesday as
seas and winds increase once again.

Fire weather Recent kbdi observations indicate that soils continue at
significant dry levels with values near or above critical
thresholds between 580-720 across the southern coastal plains of
puerto rico. Although today's forecast calls for fragments of low-
level clouds to move further inland under a fresh to locally
strong easterly wind flow peaking at 15-20 mph, relative humidity
is expected to drop into the low 40s late this morning into early
this afternoon. These conditions could aggravate the drying
pattern that is affecting these areas, enhancing fire weather
conditions. As a result, a fire danger statement has been issued.

Preliminary point temps pops
Sju 84 73 84 74 30 20 20 30
stt 80 77 80 77 20 20 20 30

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

High rip current risk from 6 am ast this morning through late
tonight for mayaguez and vicinity.

Vi... High rip current risk through late tonight for st croix-
st.Thomas... St. John... And adjacent islands.

Am... Small craft advisory until 8 pm ast Sunday for anegada passage
southward to 17n-caribbean waters of puerto rico from 10 nm
to 17n.

Small craft advisory until 2 pm ast Sunday for atlantic waters
of puerto rico and usvi from 10 nm to 19.5n-coastal waters
of northern puerto rico out 10 nm.

Small craft advisory until 8 am ast Sunday for coastal waters of
northern usvi and culebra out 10 nm-coastal waters of
southern usvi vieques and eastern puerto rico out 10 nm.

Small craft advisory until 2 am ast Monday for mona passage
southward to 17n.

Small craft advisory until 8 pm ast this evening for coastal
waters of northwestern puerto rico out 10 nm.

Short term... Em
long term... .Icp
aviation... ..Em


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41052 - South of St. John, Virgin Islands 17 mi42 min E 14 G 18 78°F 79°F5 ft1020 hPa (+0.7)
CHSV3 - 9751364 - Christiansted Harbor, Virgin Islands 19 mi42 min NE 7 G 14 82°F 79°F
LAMV3 21 mi42 min 79°F 79°F
LTBV3 - 9751401 - Lime Tree Bay, VI 23 mi42 min ESE 8 G 15 81°F 79°F1021.8 hPa (+0.9)
CHAV3 - 9751639 - Charlotte Amalie, VI 25 mi42 min 78°F 1021.2 hPa (+0.7)
CLBP4 - 9752235 - Culebra, PR 39 mi42 min 81°F 80°F1021.4 hPa (+0.9)
ESPP4 - 9752695 - Esperanza, PR 43 mi42 min E 11 G 18 80°F 77°F1021 hPa (+1.0)
41056 45 mi42 min E 16 G 19 78°F 79°F1020.4 hPa (+0.8)

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 mi1.8 hrsE 1310.00 miMostly Cloudy81°F68°F66%1021.7 hPa

Wind History from JSJ (wind in knots)
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2 days agoE15NE16E10E12
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E5E14E9E11E12E13E10E7E11E9E8S3SE4SE4SE54E10

Tide / Current Tables for Christiansted, St. Croix Island, Virgin Islands
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Christiansted
Click for Map
Sat -- 03:39 AM AST     0.12 feet Low Tide
Sat -- 06:41 AM AST     Sunrise
Sat -- 09:51 AM AST     0.48 feet High Tide
Sat -- 09:51 AM AST     Moonset
Sat -- 04:18 PM AST     -0.06 feet Low Tide
Sat -- 06:23 PM AST     Sunset
Sat -- 10:38 PM AST     Moonrise
Sat -- 11:31 PM AST     0.49 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.40.30.20.10.10.20.20.30.40.50.50.40.30.20.1-0-0.1-0.100.10.20.30.40.5

Tide / Current Tables for St. Croix, Lime Tree Bay, Virgin Islands
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St. Croix
Click for Map
Sat -- 03:11 AM AST     0.18 feet Low Tide
Sat -- 06:41 AM AST     Sunrise
Sat -- 09:17 AM AST     0.32 feet High Tide
Sat -- 09:52 AM AST     Moonset
Sat -- 04:11 PM AST     0.11 feet Low Tide
Sat -- 06:23 PM AST     Sunset
Sat -- 10:38 PM AST     Moonrise
Sat -- 11:41 PM AST     0.31 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.20.20.20.20.20.20.30.30.30.30.30.20.20.20.10.10.10.10.20.20.30.30.3

Weather Map and Satellite Images
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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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Wind Forecast for (10,2,3,4)
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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.