Sunday, May28, 2017 L-36.com


Marine Weather and Tides
Las Croabas, PR

Version 3.4
What's New / NOTES
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 5:44AMSunset 6:55PM Sunday May 28, 2017 4:44 AM AST (08:44 UTC) Moonrise 8:37AMMoonset 10:01PM Illumination 8% Phase: Waxing Crescent; Moon at 3 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- 414 Am Ast Sun May 28 2017
Today..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers through the day. Isolated Thunderstorms in the afternoon.
Tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers.
Monday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers and isolated Thunderstorms.
Monday night..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Numerous showers and isolated Thunderstorms.
Tuesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Numerous showers and isolated Thunderstorms.
Wednesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Scattered showers and isolated Thunderstorms.
Thursday..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Isolated Thunderstorms. Scattered showers.
AMZ700 414 Am Ast Sun May 28 2017
Synopsis for puerto rico and the uS. Virgin islands waters... A broad surface high pressure will remain anchored over the central and northeast atlantic through the rest of the holiday weekend. This will result in moderate to locally fresh easterly winds. A tropical wave is forecast to enter the eastern caribbean early Monday morning,then move across the regional waters Monday night through Tuesday. This will increase the chance for Thunderstorms with areas of locally heavy rainfall across the regional waters. Local seas are expected to remain below 5 feet for the next several days.

7 Day Forecast for Marine Location Near Las Croabas, PR
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location: 18.34, -65.57     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 280144
afdsju
area forecast discussion
national weather service san juan pr
944 pm ast Sat may 27 2017

Update An isolated thunderstorm developed early in the evening
over utuado and affected much of the interior and southwestern
municipalities of the island. Rainfall estimates were around one
inch of rain. During the afternoon hours, scattered to numerous
showers developed mainly over the western half of the island.

Several urban and small stream advisories were issued. The
doppler radar as well as raingages estimated between 2-3 inches of
rain with the heaviest showers. For the overnight hours into
Sunday morning, trade wind showers could move over land areas of
the usvi and eastern pr. Overnight temperatures are expected to
range between the low to mid 60s across the higher elevations to
the mid 70s across the coastal areas. No change from previous
forecast. Another round of afternoon convection is expected on
Sunday across the mountain ranges and western portions of pr.

Aviation MainlyVFR expected to prevail overnight across all
terminals. However, trade wind showers are possible at times
across the leeward usvi eastern pr terminals. Resulting in mainly
vcsh and brief -ra with sct bkn CIGS at fl030. Latest tjsj
sounding indicated ene winds at 8-15 knots below fl100. Tsra
is expected to develop on Sunday afternoon across the interior
and NW quadrant of pr.

Marine Buoys across the coastal waters of the islands were
indicating seas between 2-3 feet and northeast winds between
10 to 15 knots. Seas are expected to continue between 2 to 4 feet
through early next week. No change from previous discussion.

Prev discussion issued 342 pm ast Sat may 27 2017
synopsis... Mid to upper level trough with associated low pressure
area across the lesser antilles northeastward into the central
atlantic will slowly drift westward through Sunday. A tropical
wave just east of the lesser antilles will approach the local area
Monday through Tuesday.

Short term... Tonight through Monday night... Mid to upper trough
mentioned before will keep unstable conditions across the
northeast caribbean through Monday. This, coupled with abundant
moisture and diurnal heating will result in an increased chance
for showers thunderstorms across most of the area... Especially
afternoons and early evening hours. On Monday night the leading
edge of a tropical wave currently east of the lesser antilles will
begin to impact the local islands. The interaction of the wave
with the mid upper trough will result in a generalized increase in
showers thunderstorms from east to west. Decided to increase the
chances for precipitation based on the expected interaction of the
two weather feature and the increase in available moisture.

Long term... Tuesday through Sunday... The tropical wave will still
moving across the local area and so the chances for rain will
remain moderate to high with scattered showers and isolated
thunderstorms. Models indicate a slight decrease in the chances
for rain after Tuesday... However it looks like the environment
will remain rather moist and unstable as trofiness at mid high
level remains across the eastern caribbean.

Aviation... Shra expected through the usvi which will cause at
least vcsh across the tist and tisx terminals this afternoon.

Vcts likely at the terminals in puerto rico this afternoon. Winds
from the e-ese with sea breeze variations at around 15kt with
occasional gusts. Shra activity to diminish after 27 23z and winds
to diminish as well into the overnight hours, however, vcsh is
possible for tist, tisx, and tjsj in brief passing showers.

Marine... Pleasant marine conditions should remain in place
through Tuesday with winds at or below 15 kts and seas at or below
5 feet. Locally higher winds and rough conditions in the vicinity
of showers and thunderstorms... Especially Monday night through
Tuesday as the tropical wave moves through the coastal waters.

Preliminary point temps pops
Sju 77 89 77 88 20 30 30 50
stt 78 88 78 87 20 30 40 60

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Update... Ds
prev discussion... .Rgh


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
FRDP4 - 9753216 - Fajardo, PR 3 mi44 min E 7 G 8.9 80°F 72°F
41056 8 mi44 min ENE 7.8 G 12 80°F 82°F2 ft1015.6 hPa (-1.8)
CLBP4 - 9752235 - Culebra, PR 14 mi44 min 79°F 83°F1015.6 hPa (-1.9)
VQSP4 - 9752619 - Isabel Segunda, Vieques, PR 15 mi44 min ESE 1.9 G 2.9 78°F
ESPP4 - 9752695 - Esperanza, PR 18 mi44 min NE 1.9 G 4.1 76°F 84°F1015.5 hPa (-1.9)
YABP4 - 9754228 - Yabucoa Harbor, PR 24 mi44 min NW 1 G 2.9
SJNP4 - 9755371 - San Juan, PR 30 mi44 min ESE 5.1 G 6 79°F 82°F1016.2 hPa (-1.5)
41053 - San Juan, PR 30 mi44 min ESE 5.8 G 7.8 80°F 82°F3 ft1015.5 hPa (-1.5)
CHAV3 - 9751639 - Charlotte Amalie, VI 34 mi44 min ESE 1.9 G 2.9 79°F 84°F
41052 - South of St. John, Virgin Islands 43 mi44 min E 12 G 16 82°F 83°F3 ft1014.6 hPa (-1.6)
JOXP4 - Jobos Bay Reserve, Puerto Rico 44 mi59 min Calm 76°F 1016 hPa69°F
LAMV3 45 mi44 min 80°F 83°F

Wind History for Fajardo, PR
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR24 mi48 minN 010.00 miA Few Clouds79°F72°F79%1016.1 hPa

Wind History from JSJ (wind in knots)
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Last 24hrCalmSE3E5E8E12E10NE14NE17NE15NE17
G21
E19NE15E13E12E11E10E11E8E8E8SE5E4CalmCalm
1 day agoCalmCalmSE3CalmSE8E5NE9NE13NE12NE13NE12
G22
3S5CalmE8E6E6E5E5E4E4E4SE4SE3
2 days agoE6E6E4E8E9E10NE15NE15E16E18E16NE18
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NE16E13E13E10E11E13E11E7E5SE3SE4Calm

Tide / Current Tables for Playa de Fajardo, Puerto Rico
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Playa de Fajardo
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Sun -- 05:30 AM AST     0.17 feet Low Tide
Sun -- 05:46 AM AST     Sunrise
Sun -- 08:38 AM AST     Moonrise
Sun -- 10:32 AM AST     0.88 feet High Tide
Sun -- 04:31 PM AST     -0.35 feet Low Tide
Sun -- 06:53 PM AST     Sunset
Sun -- 10:01 PM AST     Moonset
Sun -- 11:46 PM AST     1.85 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.81.51.10.70.40.20.20.30.50.70.90.90.70.50.1-0.1-0.3-0.3-0.10.20.71.11.51.8

Tide / Current Tables for Vieques Passage, Puerto Rico Current
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Vieques Passage
Click for Map
Sun -- 12:26 AM AST     0.95 knots Max Flood
Sun -- 03:37 AM AST     -0.00 knots Slack
Sun -- 05:46 AM AST     Sunrise
Sun -- 07:08 AM AST     -1.13 knots Max Ebb
Sun -- 08:38 AM AST     Moonrise
Sun -- 10:50 AM AST     0.00 knots Slack
Sun -- 01:34 PM AST     0.67 knots Max Flood
Sun -- 04:34 PM AST     -0.00 knots Slack
Sun -- 06:53 PM AST     Sunset
Sun -- 07:17 PM AST     -0.56 knots Max Ebb
Sun -- 09:55 PM AST     0.00 knots Slack
Sun -- 10:00 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.90.70.3-0.2-0.6-1-1.1-1-0.8-0.40.10.40.60.60.50.2-0.1-0.4-0.6-0.5-0.300.4

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 (4,6,7,8)
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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.