Friday, July21, 2017 L-36.com


Marine Weather and Tides
Esperanza, 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 5:56AMSunset 7:02PM Friday July 21, 2017 6:45 PM AST (22:45 UTC) Moonrise 3:59AMMoonset 5:23PM 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- 336 Pm Ast Fri Jul 21 2017
Tonight..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Scattered showers.
Saturday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Numerous showers through the day. Isolated Thunderstorms in the afternoon.
Saturday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Scattered showers and isolated Thunderstorms.
Sunday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Isolated Thunderstorms in the morning. Scattered showers through the day.
Sunday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 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 7 seconds. Isolated showers.
Tuesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers.
Wednesday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Scattered showers.
AMZ700 336 Pm Ast Fri Jul 21 2017
Synopsis for puerto rico and the uS. Virgin islands waters... A broad surface high pressure across the central atlantic will continue to promote moderate to locally fresh easterly trade winds through at least Tuesday. Small craft operators should continue to exercise caution due to choppy marine conditions until winds and seas subside on Saturday. A tropical wave is forecast to enter the eastern caribbean on Saturday, increasing shower and Thunderstorm activity across the regional waters.

7 Day Forecast for Marine Location Near Esperanza, PR
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location: 18.12, -65.46     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 212016
afdsju
area forecast discussion
national weather service san juan pr
416 pm ast Fri jul 21 2017

Synopsis Moisture will ramp up during the day Saturday ahead of
a tropical wave expected to cross through the u.S. Virgin islands
Saturday evening and puerto rico overnight Saturday into Sunday.

Then somewhat drier air and some saharan dust will move over the
area early next week. Moisture will increase on Wednesday and
again Thursday afternoon and evening with the passage of the next
tropical wave.

Short term Tonight through Monday
at upper levels, winds remain light as low pressure over the
bahama islands gives way to a high pressure north northeast of the
area on Sunday.

The main features in the met picture today are the high pressure
that continues driving moderate to fresh easterly trade winds
across the area and the approaching tropical wave now just east of
60 west as evidenced by an area of convection at its apex near 22
north 58 west. Moisture will increase ahead of the wave on
Saturday increasing showers and thunderstorms, and then cross
through the area on Saturday night. The best divergence aloft will
also occur over puerto rico between midnight Sunday and Sunday
morning before 10 am ast. Therefore we may have some atypical (at
least for this season so far) thunderstorms in the early morning
hours across eastern puerto rico and possibly the u.S. Virgin
islands.

Although drier air follows on Sunday, enough residual moisture is
expected to keep good shower activity going in western puerto
rico until Sunday evening. Showers will begin to taper off in the
morning for the u.S. Virgin islands and in the afternoon in
eastern puerto rico. Although moisture reaches a minimum for the
next several days on Monday evening, showers will continue since
that minimum columnar moisture is still around 1.65 inches.

Long term Tuesday through Friday
moisture will wrap around a 700 mb high north of us on Sunday and
return to the area from the northeast early Tuesday morning. Then
a brief dry slot on Wednesday night will herald the arrival of
another tropical wave from the east southeast Thursday and
Thursday afternoon. Moisture associated with this wave will
continue into the following weekend.

Although the tutt low forming to our northeast next week will
move west, it will generally be too far away to be of much effect.

However a very weak low will move in early next weekend and could
increase the frequency of thunderstorms Friday and Saturday of
next week as it interacts with the increased moisture from the
tropical wave.

Aviation Mount obscurations expected to cont across the
interior and western sections of pr til 21 23z. Shra expected at
tjmz and in the vcty of tjbq til 21 23z. Dry air expected to move
in over the usvi, with vcsh elsewhere. Northerly winds at 15 to 20
knots with gusty winds in near shra, then decreasing at 10 kts or
less btwn 21 23z-22 12z, but increasing once again at 15kt aft
22 13z. Winds alf less than 20 knots aft 21 21z and E to ese blo
fl280.

Marine After tonight maritime conditions are expected to remain
at 5 feet or less through the last weekend of july. And during
that time no small craft advisories are expected. However,
vigorous thunderstorms will be capable of generating, in their
immediate vicinity, local seas of 7 feet or better during the
passage of the tropical waves.

Preliminary point temps pops
Sju 80 88 78 90 40 60 50 40
stt 80 90 80 87 40 70 40 30

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Cam
long term... .Ws


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VQSP4 - 9752619 - Isabel Segunda, Vieques, PR 2 mi45 min ESE 6 G 8.9 86°F
ESPP4 - 9752695 - Esperanza, PR 2 mi45 min ESE 8.9 G 13 84°F 85°F1015.9 hPa (+0.4)
41056 10 mi45 min E 12 G 14 84°F 3 ft1015.9 hPa (+0.4)
CLBP4 - 9752235 - Culebra, PR 15 mi45 min 87°F 85°F1016.1 hPa (+0.4)
FRDP4 - 9753216 - Fajardo, PR 17 mi45 min ENE 11 G 14 84°F 75°F
YABP4 - 9754228 - Yabucoa Harbor, PR 20 mi45 min ENE 8 G 11 86°F
CHAV3 - 9751639 - Charlotte Amalie, VI 32 mi45 min ENE 5.1 G 9.9 85°F 85°F
41052 - South of St. John, Virgin Islands 38 mi45 min E 14 G 18 85°F 84°F5 ft1014.5 hPa (-0.0)
LAMV3 41 mi45 min 84°F 85°F
JOXP4 - Jobos Bay Reserve, Puerto Rico 42 mi60 min E 5.1 86°F 1016 hPa75°F
41053 - San Juan, PR 42 mi45 min E 16 G 19 84°F 84°F5 ft1015.5 hPa (+0.5)
SJNP4 - 9755371 - San Juan, PR 42 mi45 min E 15 G 21 84°F 85°F1016.2 hPa (+0.5)
LTBV3 - 9751401 - Lime Tree Bay, VI 48 mi45 min ESE 5.1 G 11 85°F 85°F1016.6 hPa (-0.0)
CHSV3 - 9751364 - Christiansted Harbor, Virgin Islands 48 mi45 min ENE 5.1 G 8.9 85°F 85°F1015.8 hPa (-0.0)

Wind History for Isabel Segunda, Vieques Island, PR
(wind in knots)    EDIT      (on/off)   Help
8
PM
-12
PM
10
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11
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AM
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Last
24hr
E6
G10
E7
G11
E5
G9
E8
G15
E5
G9
E4
G10
E6
G11
E3
SE2
G6
SE5
G9
E2
SE3
SE2
E5
G9
E7
G14
E7
G13
E9
G14
E7
G11
E9
G16
E7
G12
E6
G11
E7
G13
E6
G9
1 day
ago
E6
G12
E4
G7
E5
G11
E4
G8
E5
G8
E6
G10
E4
G9
E6
G13
E4
G8
E4
G7
E6
G10
E3
G7
E5
G9
E7
G12
E6
G12
E5
G11
NE7
G14
NE6
G12
E4
G8
NE7
G16
E7
G15
E6
G11
E9
G16
E6
G11
2 days
ago
SE6
G10
SE5
G8
SE6
G11
E7
G11
SE3
G6
SE4
G9
SE4
G8
E8
G16
SE4
G7
E4
E4
E6
G11
E6
G11
E11
G15
E6
G12
E9
G15
E9
G13
E8
G17
E7
G11
E6
G11
NE11
G17
E10
G18
E7
G12
E6
G9

Airport Reports
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Tide / Current Tables for Vieques Island, Puerto Rico
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Vieques Island
Click for Map
Fri -- 03:58 AM AST     Moonrise
Fri -- 05:56 AM AST     Sunrise
Fri -- 11:12 AM AST     -0.22 feet Low Tide
Fri -- 05:23 PM AST     Moonset
Fri -- 06:59 PM AST     Sunset
Fri -- 09:00 PM AST     0.91 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.60.60.50.40.40.20.1-0-0.1-0.2-0.2-0.2-0.100.20.40.60.70.80.90.90.90.8

Tide / Current Tables for Vieques Passage, Puerto Rico Current
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Vieques Passage
Click for Map
Fri -- 03:03 AM AST     -0.98 knots Max Ebb
Fri -- 03:59 AM AST     Moonrise
Fri -- 05:57 AM AST     Sunrise
Fri -- 06:53 AM AST     0.00 knots Slack
Fri -- 09:20 AM AST     0.46 knots Max Flood
Fri -- 11:58 AM AST     -0.00 knots Slack
Fri -- 02:52 PM AST     -0.53 knots Max Ebb
Fri -- 05:23 PM AST     Moonset
Fri -- 05:31 PM AST     0.00 knots Slack
Fri -- 07:00 PM AST     Sunset
Fri -- 09:09 PM AST     0.94 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.2-0.6-0.9-1-0.9-0.7-0.300.30.50.40.3-0-0.3-0.5-0.5-0.4-0.20.20.50.80.90.90.6

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 (18,4,5,8)
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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.