Monday, June18, 2018 L-36.com


Marine Weather and Tides
Central Aguirre, PR

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:17AMSunset 6:06PM Monday June 18, 2018 1:19 AM CST (07:19 UTC) Moonrise 11:05AMMoonset 11:29PM Illumination 24% 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- 925 Pm Ast Sun Jun 17 2018
Rest of tonight..Southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers through the night.
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.
Monday night..Southeast 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 night.
Tuesday..East winds 15 to 20 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.
Tuesday night..Southeast 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.
Wednesday..Southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated Thunderstorms, then isolated showers.
Thursday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
Friday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
AMZ700 925 Pm Ast Sun Jun 17 2018
Synopsis for puerto rico and the uS. Virgin islands waters... Surface high pressure located across the northeastern atlantic will continue to promote a light to moderate east to southeasterly wind flow throughout the forecast period. Another tropical wave is forecast to enter the eastern caribbean and move across the forecast area Tuesday through Wednesday, increasing the shower and Thunderstorm activity across the regional waters.

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 180130
afdsju
area forecast discussion
national weather service san juan pr
930 pm ast Sun jun 17 2018

Update Showers overnight... If any... Will be focused across the
usvi and the eastern third of puerto rico. Showers and thunderstorms
are then expected once again tomorrow afternoon across the western
interior and the northwest quadrant of puerto rico. Tropical wave
still expected on Tuesday. No changes were introduced to the
forecast package at this time, forecast on track.

Aviation Vfr at all TAF sites with vcsh at jsj as well as usvi
and leeward terminals overnight and tomorrow morning. Shra tsra
in and around jmz and jbq and possibly jsj between 18 16-22z.

Ese winds at around 10 knots, becoming 10 to 15 with some sea
breeze variations aft 18 12z.

Marine No change to previous discussion. Seas of 3 to 5
feet are expected across the local waters with easterly winds
around 15 knots. An increase in shower and thunder activity
is expected early this week as a tropical wave moves across the
eastern caribbean.

Prev discussion issued 536 pm ast Sun jun 17 2018
synopsis... Broad surface high pressure will continue across the
northeastern atlantic for the next several days. A cold front
will remain north of the region through mid-week. This will
promote a southeasterly wind flow across the local area through at
least Wednesday. Upper level trough pattern will establish north
and over the region through Tuesday. A tropical wave will move
across the eastern caribbean on Tuesday. Normal to above normal
temperatures will continue for the next few days.

Short term... Today through Tuesday...

a weak saharan air layer will continue through Monday across the
region. A southeasterly wind flow will prevail during the short
term period as surface ridge continues over the azores. This will
result in hot temperatures along the coastal areas of the islands.

An upper level trough north of the area will aid in the
development of afternoon showers and thunderstorms, once again on
Monday along the interior and north central portions of puerto
rico. On Tuesday, low level moisture increases as a tropical wave
moves mainly south of the islands. The wave and favorable upper
levels will result in an increase on the areal coverage of
showers and thunderstorms across puerto rico and across the
caribbean waters. Urban and small stream flooding is expected each
afternoon with the thunderstorms as well as periods of frequent
lightning. The best chances for showers across the usvi are
expected from Monday evening through Tuesday.

Long term... Wednesday through Monday(from previous discussion)...

the potential for shower and thunderstorm activity will continue
on Wednesday as lingering moisture left behind the tropical wave
will prevail over the area. With the low-level wind flow
prevailing from the southeast, the areas that have the highest
probability of seeing rainfall activity will be across the
northern half of puerto rico. The u.S. Virgin islands should see
lesser rainfall than over puerto rico as drier air will be moving
in from the east.

As the deeper moisture continues to retreat later on Wednesday
night, drier air along with some saharan dust will move in across
the forecast area. Therefore, for Thursday and Friday, mostly
fair weather conditions along with hazier skies are expected
across most of the forecast area with limited shower activity
developing across northwest pr each afternoon.

Model guidance is hinting at another tropical wave moving across
the eastern caribbean and spreading deeper moisture into the
forecast area later Friday night through the day Saturday.

Therefore, the potential exists for an increase in shower and
thunderstorm activity across the region during the first half of
next weekend.

Aviation...VFR at local terminals and en route btw islands. Isold
shra ovr coastal waters... Sct lyrs nr fl030... Fl050... Except sct-bkn
with aftn shra isold tsra ovr W and NW pr vcnty tjmz tjbq til
17 22z. Sfc wnds fm e-se 10-15 kts with ocnl higher gusts
bcmg lgt vrb aft 17 23z.

Marine... Seas of 2 to 4 feet along with east to southeast
generally between 10 to 15 knots will continue to prevail across
the local waters through at least Tuesday. Thunderstorms are
possible on Tuesday across the caribbean waters as a tropical
wave moves south of the region. A low risk of rip currents will
prevail across most of the beaches through the workweek.

Preliminary point temps pops
Sju 79 90 77 89 0 40 40 60
stt 80 87 80 87 20 50 50 60

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Update... Om
aviation... .Om


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SJNP4 - 9755371 - San Juan, PR 11 mi50 min 81°F 84°F1017.3 hPa
41053 - San Juan, PR 12 mi50 min SSE 1.9 G 3.9 81°F 1016.5 hPa
YABP4 - 9754228 - Yabucoa Harbor, PR 25 mi50 min 83°F
JOXP4 - Jobos Bay Reserve, Puerto Rico 25 mi95 min N 1.9 78°F 1018 hPa73°F
AROP4 - 9757809 - Arecibo, PR 30 mi50 min SSE 5.1 G 6
42085 - Southeast of Ponce, PR 36 mi80 min E 9.7 G 12 85°F 83°F3 ft1016.3 hPa (-1.4)
41056 38 mi50 min ESE 9.7 G 12 82°F 1016.3 hPa
CLBP4 - 9752235 - Culebra, PR 47 mi50 min 81°F 84°F1017.1 hPa

Wind History for San Juan, PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR1343 mi84 minN 010.00 miFair79°F75°F88%1017.5 hPa

Wind History from JSJ (wind in knots)
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Last 24hrCalmCalmCalmCalmE43N5Calm44S74SE7S4S7S4S3S3CalmE4CalmE5CalmCalm
1 day agoCalmS3CalmCalmE4E6E7NE13NE15NE16E18NE19NE16E15E14E10E9E7E6E4CalmCalmCalmCalm
2 days agoSE4E5CalmS3E7E9E9E17NE15
G22
E17
G21
NE17NE16E17E18NE15E12E8E6E8SE4SE3SE3CalmCalm

Tide / Current Tables for San Juan, La Puntilla, San Juan Bay, Puerto Rico
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San Juan
Click for Map
Mon -- 12:46 AM AST     1.78 feet High Tide
Mon -- 05:48 AM AST     Sunrise
Mon -- 07:28 AM AST     0.17 feet Low Tide
Mon -- 10:46 AM AST     Moonrise
Mon -- 12:50 PM AST     0.98 feet High Tide
Mon -- 06:44 PM AST     -0.05 feet Low Tide
Mon -- 07:02 PM AST     Sunset
Mon -- 11:43 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.71.81.61.410.60.30.20.20.30.50.80.910.90.70.40.2-0-00.10.40.71.1

Tide / Current Tables for San Juan, Puerto Rico
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San Juan
Click for Map
Mon -- 12:47 AM AST     1.80 feet High Tide
Mon -- 05:48 AM AST     Sunrise
Mon -- 07:28 AM AST     0.18 feet Low Tide
Mon -- 10:46 AM AST     Moonrise
Mon -- 12:52 PM AST     1.00 feet High Tide
Mon -- 06:45 PM AST     -0.04 feet Low Tide
Mon -- 07:02 PM AST     Sunset
Mon -- 11:43 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.71.81.71.410.60.40.20.20.30.60.80.910.90.70.40.20-00.10.40.71.1

Weather Map and Satellite Images
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wmap_A
GOES Local Image of Puerto Rico    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
target = "new">Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (3,6,7,8)
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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.