Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
Naranjito, 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 5:50AMSunset 7:05PM Wednesday June 28, 2017 3:07 PM AST (19:07 UTC) Moonrise 10:24AMMoonset 11:12PM Illumination 22% Phase: Waxing Crescent; Moon at 5 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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AMZ712 Coastal Waters Of Northern Puerto Rico Out 10 Nm- 1035 Am Ast Wed Jun 28 2017
.small craft should exercise caution...
Rest of today..East winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers.
Tonight..East winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
Thursday..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Thursday night..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated Thunderstorms through the night. Scattered showers after midnight.
Friday..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Scattered showers and isolated Thunderstorms.
Saturday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Isolated Thunderstorms. Scattered showers.
Sunday..East winds 15 to 20 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Isolated showers, then isolated Thunderstorms.
AMZ700 1035 Am Ast Wed Jun 28 2017
Synopsis for puerto rico and the uS. Virgin islands waters... Surface high pressure across the central atlantic will maintain moderate to locally fresh easterly winds across the regional waters through the end of the week. A tropical wave is forecast to enter and move across the eastern caribbean waters Thursday through Friday. This will bring an increase in winds and seas as well as the chance for showers and Thunderstorms.

7 Day Forecast for Marine Location Near Naranjito, PR
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location: 18.31, -66.18     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 281500
afdsju
area forecast discussion
national weather service san juan pr
1100 am ast Wed jun 28 2017

Update near term Locally induced showers and thunderstorms are
still expected this afternoon across west puerto rico. However,
this activity should be short-lived as a drier air as well as
subsidence ahead of an approaching tropical wave encompass the
forecast area this evening into tonight. Moisture associated with
the approaching tropical wave is expected to reach the area tomorrow.

Minor changes were introduced to the near term grids at this
time.

Aviation Vfr conds expected to prevail at all TAF sites with
brief MVFR conds in shra tsra at jmz between 28 16z and 28 22z.

Easterly winds 10-15 knots with sea breeze variations expected
through 28 22z, becoming at 10 knots or less overnight. Cloudiness
and shra tsra activity will increase across the leeward terminals
overnight.

Marine Tranquil marine conditions will continue to prevail
across the regional waters with seas up to 4 feet and winds 15-20
knots. Winds and seas will increase across the area tonight into
Thursday as a tropical wave moves across the eastern caribbean.

This will also increase the chance for showers and thunderstorms.

Prev discussion issued 501 am ast Wed jun 28 2017
synopsis... A tropical wave will move across the area Thursday and
Friday increasing the shower and thunderstorm activity across the
area. A drier air mass will encompass the region behind the wave
during the weekend.

Short term... Today through Friday... The upper low to the north
northeast of the local area will remain over the central atlantic
for the next few days while a weaker upper low develops just north
of the local islands late Wednesday into Thursday. There is also
a strong sfc high across the north central atlantic which will
also prevail for the next few days. Saharan dust is present and
will affect the local area today so there will be some haze.

However, just like it was the case yesterday, showers and isolated
thunderstorms are expected this afternoon across western pr.

Thursday and Friday are expected to be more active as a tropical
wave approaches the local area late on Thursday, increasing the
available moisture significantly and causing much more coverage of
showers and thunderstorms when combined with the upper low just
north of the local islands late on Thursday into Friday.

Long term... Saturday through Thursday... Saturday and Sunday, a
dry airmass will dominates the region before a tropical wave
affect the local area Monday. Another dry airmass is forecast by
computer models to encompass the region from the east by mid next
week, with patches of low level moisture embedded in the trade
winds affecting the region throughout the period.

Aviation...VFR conds expected for the next 24 hours across the
local terminals. Vcsh is expected early in the morning for tist,
tisx, and tjsj. Afternoon convection is expected mainly across the
western sections of pr, which could affect tjmz and cause tempo MVFR
conds after 28 18z. Saharan dust is still present, causing haze but
visibility will still be p6sm. Winds from the east at 5-10kt
expected early this morning, increasing to about 15kt with
occasional gusts after 28 13z.

Marine... Seas up to 5 feet and winds up to 20 knots are expected
across the coastal waters. Small craft should exercise caution
across the atlantic and caribbean nearshore waters due to winds.

Preliminary point temps pops
Sju 89 80 89 77 30 10 40 50
stt 90 80 88 79 30 30 40 50

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SJNP4 - 9755371 - San Juan, PR 11 mi49 min ENE 15 G 19
41053 - San Juan, PR 12 mi67 min E 14 G 16 83°F 83°F3 ft1015.3 hPa (-1.2)
JOXP4 - Jobos Bay Reserve, Puerto Rico 25 mi82 min E 9.9 88°F 1016 hPa74°F
YABP4 - 9754228 - Yabucoa Harbor, PR 25 mi49 min ENE 8 G 12 87°F
FRDP4 - 9753216 - Fajardo, PR 29 mi49 min ENE 7 G 8 83°F 76°F
AROP4 - 9757809 - Arecibo, PR 30 mi49 min ENE 12 G 18
42085 - Southeast of Ponce, PR 36 mi127 min ESE 18 G 21 84°F 84°F4 ft1014.5 hPa (-1.1)
41056 38 mi67 min E 9.7 G 12 83°F 84°F3 ft1015.6 hPa (-1.2)
VQSP4 - 9752619 - Isabel Segunda, Vieques, PR 40 mi49 min E 8 G 12 87°F
ESPP4 - 9752695 - Esperanza, PR 40 mi49 min SE 11 G 17 84°F 85°F1015.2 hPa
CLBP4 - 9752235 - Culebra, PR 47 mi49 min 87°F 84°F1015.4 hPa

Wind History for San Juan, PR
(wind in knots)    EDIT      (on/off)   Help
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NE10
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G17
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NE11
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E18
G22
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G14
E7
G10
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NE9
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E17
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G21
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E11
G16
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G20
E17
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E18
G22
E17
E19
G24

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR13 mi71 minENE 1310.00 miPartly Cloudy88°F75°F68%1015.8 hPa

Wind History from JSJ (wind in knots)
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Last 24hrE14E12NE12E12E10E12E10E8E8E7E5E5NE8CalmSE3CalmNE9E15NE13NE14
G19
NE16E16
G22
NE13NE16
1 day agoNE17E16E13E12E11E8E5E7E4SE3E4CalmCalmCalmE5E5E9NE13NE12NE13NE14NE14NE12NE14
2 days agoE14E13E15E15E11E11SE8
G18
NE3CalmSW3CalmCalmS3SE5E7E8E11E14E16E16
G21
E17
G23
E17NE18E16

Tide / Current Tables for San Juan, La Puntilla, San Juan Bay, Puerto Rico
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San Juan
Click for Map
Wed -- 12:24 AM AST     1.72 feet High Tide
Wed -- 05:50 AM AST     Sunrise
Wed -- 07:00 AM AST     0.17 feet Low Tide
Wed -- 10:23 AM AST     Moonrise
Wed -- 12:32 PM AST     1.03 feet High Tide
Wed -- 06:25 PM AST     0.01 feet Low Tide
Wed -- 07:04 PM AST     Sunset
Wed -- 11:11 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.71.71.51.20.80.50.20.20.20.40.70.9110.90.70.40.2000.20.50.91.2

Tide / Current Tables for San Juan, Puerto Rico
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San Juan
Click for Map
Wed -- 12:25 AM AST     1.73 feet High Tide
Wed -- 05:50 AM AST     Sunrise
Wed -- 07:01 AM AST     0.17 feet Low Tide
Wed -- 10:23 AM AST     Moonrise
Wed -- 12:33 PM AST     1.05 feet High Tide
Wed -- 06:27 PM AST     0.02 feet Low Tide
Wed -- 07:04 PM AST     Sunset
Wed -- 11:11 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.71.71.51.20.80.50.30.20.20.40.70.9110.90.70.40.2000.20.50.91.2

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 (15,3,4,5)
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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.