Friday, December15, 2017 L-36.com


Marine Weather and Tides
Culebra, PR

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 6:43AMSunset 5:47PM Friday December 15, 2017 11:22 PM AST (03:22 UTC) Moonrise 4:22AMMoonset 4:05PM Illumination 5% Phase: Waning Crescent; Moon at 27 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- 909 Pm Ast Fri Dec 15 2017
.small craft should exercise caution...
Rest of tonight..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. East swell around 4 feet. Isolated showers.
Saturday..Northeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. East swell around 4 feet. Scattered showers.
Saturday night..Northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Scattered showers.
Sunday..Northeast winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 7 seconds. Scattered showers.
Sunday night..Northeast winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 7 seconds. North swell around 4 feet. Scattered showers.
Monday..Northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. 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. East swell 4 to 5 feet. Scattered showers.
Wednesday..Northeast 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 909 Pm Ast Fri Dec 15 2017
Synopsis for puerto rico and the uS. Virgin islands waters... Surface high pressure ridge will build and spread across the forecast area, tightening the local pressure gradient. This will result in a moderate to fresh east to northeast wind flow through the weekend. A northerly swell will continue to affect the atlantic waters and local passages through early Saturday.

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 160030
afdsju
area forecast discussion
national weather service san juan pr
830 pm ast Fri dec 15 2017

Update Doppler radar detected only isolated showers mostly
across the surrounding waters, with few of them affecting the
eastern sections of puerto rico as well as the northern u.S.

Virgin islands from time to time. However, not significant
precipitation was detected elsewhere across the local islands.

Local weather conditions will continue to be dominated by a strong
upper level ridge over the area. Under this ridge pattern aloft,
continue to expect fair weather conditions with trade wind showers
at times as well as locally induced showers across the southwest
quadrant of puerto rico each afternoon and pleasant daytime and
overnight temperatures during the next few days. A developing
surface high pressure across the northeast central atlantic will
continue to maintain an east to east-northeast wind flow across
the region for the next couple of days.

Aviation A north swell between 4-6 feet will continue to affect
the atlantic waters and passages overnight. This will result in a
high risk of rip currents across the atlantic beaches of puerto
rico, culebra and st. Thomas. Moderate to fresh east to northeast
winds will continue at 10-15 knots with higher gusts at times increasing
to 15 to 20 knots over the weekend. Small craft advisory will remain
in effect overnight through Saturday for the offshore atlantic waters.

Marine Across the regional waters, seas up to 7 feet will
continue across the atlantic water and local passages. Winds will
remain from the east to east-northeast at 10 to 20 knots. For the
beach goers, there is a high risk of rip currents along the north
facing beaches of puerto rico and culebra and along the north
facing beaches of saint thomas and saint john.

Prev discussion issued 445 pm ast Fri dec 15 2017
synopsis... A mid to upper level ridge will hold across the forecast
area through the weekend and into early next week. Surface high pressure
ridge will continue to build and spread across the east central atlantic
yielding moderate to strong east to northeast winds through the weekend.

Mostly fair weather skies and seasonal condtions expected to persist
for the next several days.

Short term... Today through Sunday...

the dominant high pressure ridge pattern, will continue to favor
a strong trade wind cap inversion across the region supporting
mostly fair weather skies across the islands. Model guidance,
satellite imagery and recent upper air sounding continued to suggest
a relatively dry and stable air mass to persist through Sunday.

In addition moisture advection will be limited except for that
brought in across the north and east coastal areas by the moderate
to strong east northeast trades. Expect plenty of sunshine and
few passing clouds with pleasant daytime and overnight temperaturesalong the north facing
beaches of saint thomas and saint john.During the next few days.

Occasional light passing showers will remain possible during the
overnight and early morning hours followed by limited shower
activity during the afternoons.

Long term... Monday through Saturday...

a mid to upper level ridge will hold across the forecast area through
at least Wednesday. The ridge pattern aloft is then expected to gradually
erode during the latter part of next week, as a polar trough will move
across the central atlantic then sink southwards into the northeastern
caribbean. The surface high pressure ridge pattern north of the region
is forecast to persist through the forecast period. This will result
in moderate to strong east northeast winds. Expect a fair and mainly
stable weather pattern across the islands and coastal waters through
most of next week, except for passing showers especially during the
early morning and late evening hours. Seasonable temperatures are
expected to continue. By the end of the period low level moisture
is forecast to gradually increase as the ridge aloft erodes in response
to an upper trough sinking southwards across the region. This will
result in a better chance for shower activity across the local islands.

Widespread and significant rainfall accumulations as not forecast
at this time.

Aviation...VFR conditions will prevail across all terminals through
the forecast period. Afternoon shra over the SW quadrant of pr could
affect briefly tjps tjmz. Winds will continue ene at 10-15 kts with
higher gusts at times.

Marine... A north swell between 4-6 feet will continue to affect
the atlantic waters and passages overnight. This will result in a
high risk of rip currents across the atlantic beaches of puerto
rico, culebra and st. Thomas. Moderate to fresh east to northeast
winds will continue at 10-15 knots with higher gusts at times increasing
to 15 to 20 knots over the weekend. Small craft advisory will remain
in effect overnight through Saturday for the offshore atlantic waters.

Preliminary point temps pops
Sju 76 85 77 84 20 20 30 30
stt 76 86 75 87 20 30 30 30

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

Vi... High rip current risk through Saturday afternoon for
st.Thomas... St. John... And adjacent islands.

Am... High rip current risk through Saturday afternoon 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 8 am ast Saturday for atlantic waters
of puerto rico and usvi from 10 nm to 19.5n.

Short term... Jf
long term... .Ram


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41052 - South of St. John, Virgin Islands 17 mi53 min ENE 14 G 18 82°F 1015.9 hPa
LAMV3 21 mi53 min 80°F 82°F
CLBP4 - 9752235 - Culebra, PR 39 mi53 min 78°F 83°F1018.4 hPa
41056 45 mi53 min E 12 G 14 80°F 1018 hPa

Wind History for Christiansted Harbor, St Croix, VI
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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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Fri -- 04:21 AM AST     Moonrise
Fri -- 06:41 AM AST     Sunrise
Fri -- 08:24 AM AST     0.78 feet High Tide
Fri -- 04:06 PM AST     Moonset
Fri -- 05:46 PM AST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-000.10.30.40.60.70.70.80.80.70.70.60.50.40.40.40.40.30.20.10.10-0

Tide / Current Tables for Benner Bay, St. Thomas, Virgin Islands
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Benner Bay
Click for Map
Fri -- 04:23 AM AST     Moonrise
Fri -- 06:43 AM AST     Sunrise
Fri -- 08:20 AM AST     0.81 feet High Tide
Fri -- 04:06 PM AST     Moonset
Fri -- 05:45 PM AST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0-00.10.20.40.50.70.80.80.80.80.70.60.50.40.40.30.30.30.20.20.10-0

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
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GOES Local Image of Puerto Rico    EDIT
Geos

Wind Forecast for (22,6,7,8)
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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.