Thursday, October19, 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 6:13AMSunset 5:55PM Thursday October 19, 2017 11:24 PM AST (03:24 UTC) Moonrise 6:00AMMoonset 6:06PM 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
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AMZ725 Coastal Waters Of Southern Usvi Vieques And Eastern Puerto Rico Out 10 Nm- 920 Pm Ast Thu Oct 19 2017
.small craft advisory in effect through Friday morning...
Rest of tonight..East winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 7 seconds. Isolated showers through the night.
Friday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 8 seconds. Isolated showers.
Friday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Isolated showers.
Saturday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers through the day.
Saturday night..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Sunday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Monday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Isolated showers.
Tuesday..East winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers.
AMZ700 920 Pm Ast Thu Oct 19 2017
Synopsis for puerto rico and the uS. Virgin islands waters... A trade wind surge will continue to produce choppy and hazardous seas particularly across the offshore waters and local passages through at least Saturday. Saharan dust over the local area will continue to cause reduced visibility due to haze tonight and Friday. A moderate to fresh easterly wind flow will prevail Sunday and into early next week.

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 200130
afdsju
area forecast discussion
national weather service san juan pr
930 pm ast Thu oct 19 2017

Update near term A dry and stable air mass will continue to
prevail across the forecast area through at least early next week
under ridge pattern aloft. Therefore a fair weather pattern is
expected to prevail tonight and into the upcoming weekend.

Shower activity, if any, will be focused across western areas of
puerto rico each afternoon. Maximum temperatures are expected to
remain warm to hot particularly across the northern slopes of
puerto rico.

Aviation MostlyVFR conds expected to prevail at all TAF sites
through the forecast period. Brief periods of MVFR conds still
possible due to reduced visibilities. Light and variable winds
overnight. &&

Marine A trade wind surge will continue to produce choppy and
hazardous seas particularly across the offshore waters and local
passages through at least Saturday. Saharan dust over the local
area will continue to cause reduced visibility due to haze tonight
and Friday.

Prev discussion issued 354 pm ast Thu oct 19 2017
synopsis... Upper level ridge will continue to dominates the local
region through the weekend. A tutt low will dig south across the
northeast caribbean early next week.

Short term... Thursday through Sunday... Very dry, hazy and hot
conditions prevailed across puerto rico and the u.S.Virgin islands
this afternoon. A very dry air mass has moved across the region,
limiting any shower development across the area. 19 12z tjsj
sounding showed precipitable water of only 1.35 inches, and local
models indicated it could get even drier tonight and tomorrow.

Therefore, no shower activity is expected. In addition, a saharan
air layer has moved across the area since late yesterday night,
which has produced very hazy skies across the local islands. No
changes in this weather pattern in expected through Sunday.

Long term... Monday through Thursday... Relative dry weather
conditions are expected to continue Monday as upper level ridge
maintains control of the weather locally. However, as upper level
trough dig south across the area, better chances for showers are
expected from Tuesday through the rest of the work week.

Aviation...VFR conds mainly expected but haze will occasionally
cause MVFR visibility due to its high concentration of saharan dust.

This dust will improve slightly tonight, which should cause
prevailingVFR conds across all of the local terminals. Easterly
winds expected for the rest of today at 10-15kt with gusts 20-25kt.

Winds and haze improving slightly after 20 00z, continued easterly
but at around 10kt. Fair weather expected for the next 24 hours.

Marine... Seas up to 7 feet and winds up to 20 knots are expected
across the local waters through at least Friday. Small craft
advisories continue in effect for most coastal waters.

Preliminary point temps pops
Sju 79 89 79 89 0 0 10 20
stt 80 85 80 85 0 0 30 30

Sju watches warnings advisories
Pr... High rip current risk through Friday afternoon for central
interior-northeast-ponce and vicinity-southeast-southwest-
vieques.

Small craft advisory until 8 am ast Friday for southeast.

Vi... High rip current risk through Friday afternoon for st croix.

Small craft advisory until 8 am ast Friday for st.Thomas... St.

John... And adjacent islands.

Am... High rip current risk through Friday afternoon for coastal
waters of southwestern puerto rico out 10 nm-coastal waters
of southern puerto rico out 10 nm.

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

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

Small craft advisory until 2 pm ast Friday for anegada passage
southward to 17n-atlantic waters of puerto rico and usvi
from 10 nm to 19.5n.

Near term... Om
aviation... .Om


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41052 - South of St. John, Virgin Islands 17 mi55 min E 16 G 21 84°F 1014.7 hPa
LAMV3 21 mi55 min 83°F 84°F
CLBP4 - 9752235 - Culebra, PR 39 mi55 min 83°F 85°F1016.8 hPa
41056 45 mi85 min E 16 G 19 84°F 4 ft1016.3 hPa (+1.4)

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
Click for Map
Thu -- 01:31 AM AST     0.11 feet Low Tide
Thu -- 05:59 AM AST     Moonrise
Thu -- 06:13 AM AST     Sunrise
Thu -- 08:20 AM AST     0.64 feet High Tide
Thu -- 02:54 PM AST     0.29 feet Low Tide
Thu -- 03:12 PM AST     New Moon
Thu -- 05:53 PM AST     Sunset
Thu -- 06:06 PM AST     Moonset
Thu -- 06:50 PM AST     0.43 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.10.10.20.30.40.50.60.60.60.60.50.50.40.30.30.30.40.40.40.40.30.30.2

Tide / Current Tables for Benner Bay, St. Thomas, Virgin Islands
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Benner Bay
Click for Map
Thu -- 01:56 AM AST     0.12 feet Low Tide
Thu -- 06:00 AM AST     Moonrise
Thu -- 06:14 AM AST     Sunrise
Thu -- 09:07 AM AST     0.66 feet High Tide
Thu -- 03:12 PM AST     New Moon
Thu -- 03:50 PM AST     0.28 feet Low Tide
Thu -- 05:54 PM AST     Sunset
Thu -- 06:07 PM AST     Moonset
Thu -- 08:07 PM AST     0.38 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.10.10.20.20.30.40.60.60.70.60.60.50.40.30.30.30.30.30.40.40.40.30.3

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 (23,6,7,8)
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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.