Tuesday, June27, 2017 L-36.com


Marine Weather and Tides
Jobos, 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 7:04PM Tuesday June 27, 2017 10:10 PM AST (02:10 UTC) Moonrise 9:27AMMoonset 10:26PM Illumination 16% Phase: Waxing Crescent; Moon at 4 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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AMZ735 Coastal Waters Of Southern Puerto Rico Out 10 Nm- 917 Pm Ast Tue Jun 27 2017
Rest of tonight..East 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.
Wednesday..East winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
Wednesday night..East winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers through the night.
Thursday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Thursday 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.
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.
Saturday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 8 seconds. Isolated showers.
Sunday..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 917 Pm Ast Tue Jun 27 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 Jobos, PR
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location: 17.93, -66.16     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 280124
afdsju
area forecast discussion
national weather service san juan pr
924 pm ast Tue jun 27 2017

Update Isolated passing showers will continue to affect the
eastern portions of puerto rico and adjacent islands. These
showers will continue to affect these areas through at least mid
morning. Showers and thunderstorms are possible across the western
sections in the afternoon hours.

Aviation MostlyVFR conditions will prevail across the local
flying area overnight. Brief MVFR conditions are possible over w
pr and vcty tjmz and tjbq til from 28 22z in shra and possible
isolated tsra. Haze alqds across local flying area due to
suspended saharan dust spread across the region thru at least
Wednesday. Low level e-se winds up to 10 knots expected tonight,
increasing to 15-20 knots after 28 14z.

Marine Mariners can expect seas of 3-5 ft and winds up to 20
kts across the coastal waters.

Prev discussion issued 421 pm ast Tue jun 27 2017
synopsis... High pressure ridge will remain the dominant feature across
the northeastern caribbean through at least Wednesday. This will therfore
maintain a fairly strong cap inversion and as a result limit moisture
advection and convective activity across the forecast area. In addition
the extensive saharan air layer continued across the region with high
amounts of suspended dust particulates spread across the region. This
lead to mostly fair weather but hazy conditions across most of the
islands.

Short term... Today through Thursday...

local and diurnal effects lead to the formation of a few showers mainly
along the southwest and west interior sections of puerto rico, as well
as on the west end and downwind of the some of the of the islands. This
activity should quickly diminish around sunset leaving mostly clear
to partly cloudy skies overnight.

Similar conditions expected for Wednesday, but expect passing early
morning showers of short duration over the coastal waters and mainly
on the windward side of the islands. This will be followed by diurnally
induced showers over portions of the interior and west sections of
puerto rico. By Thursday, the mid to upper level ridge should slightly
erode overhead leading to a weakening of the cap inversion. A tropical
wave will enter and move across the the eastern caribbean. This overall
pattern will result in an increase in layered moisture and low level
convergence across the forecast area. Therefore the expected surge
of tropical moisture along with good ventilation aloft will enhance
shower and thunderstorm development across the islands and coastal
waters through Thursday. Minor urban and small stream flooding will
therefore be likely in some areas.

Long term... Friday through Wednesday...

Friday through at least Saturday, moisture trailing the wave in
the prevailing east to southeast wind flow should maintain high
chances for showers and isolated thunderstorm activity across the
region each day. Some of the activity may be briefly enhanced especially
during the afternoon hours, and once again lead to minor urban and
small stream flooding in isolated areas. By Sunday and into early
next week expect a return of more seasonal weather pattern with
passing trade winds showers followed by diurnally induced afternoon
convection mainly over the west sections of puerto rico.

Aviation...VFR conds expected at all TAF sites except tjmz where
brief MVFR conds are possible thru 21z with shra isold tsra.

Suspended saharan dust particles will continue to create hazy skies
across the flying area but visibilities are expected to remain p6sm.

Easterly winds of 15-20 kts will prevail below fl150.

Marine... Typical marine conditions will prevail through at least
midweek. Mariners can expect seas of 3-5 ft and winds of 10-20 kts
across most waters. Locally fresh winds may along the coastal waters
north and south puerto rico may create create choppy seas through
21z each day. A tropical wave forecast to move across the region
on Thursday should bring an increase in showers and thunderstorms
as well as winds and seas particularly across the local passages
and caribbean waters.

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

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Em
long term... .Ram


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
JOXP4 - Jobos Bay Reserve, Puerto Rico 4 mi86 min NE 1.9 81°F 1016 hPa72°F
YABP4 - 9754228 - Yabucoa Harbor, PR 19 mi41 min NNE 2.9 G 5.1 82°F
42085 - Southeast of Ponce, PR 20 mi41 min E 16 G 18 85°F 1015 hPa
SJNP4 - 9755371 - San Juan, PR 37 mi41 min E 13 G 17 83°F 84°F1016.9 hPa
41053 - San Juan, PR 38 mi71 min E 14 G 16 83°F 83°F2 ft1015.9 hPa (+1.0)
ESPP4 - 9752695 - Esperanza, PR 38 mi41 min ENE 1 G 4.1 79°F 84°F1016.6 hPa
FRDP4 - 9753216 - Fajardo, PR 40 mi41 min ENE 12 G 14 82°F 75°F
VQSP4 - 9752619 - Isabel Segunda, Vieques, PR 41 mi41 min E 6 G 11 81°F
41056 44 mi41 min ENE 14 G 18 82°F 1016.5 hPa
MGIP4 - 9759110 - Magueyes Islands, PR 47 mi41 min ENE 2.9 G 7 82°F 84°F1015.6 hPa
IMGP4 47 mi21 min NNE 5.1 G 7 81°F
AROP4 - 9757809 - Arecibo, PR 48 mi41 min E 5.1 G 9.9

Wind History for Yabucoa Harbor, PR
(wind in knots)    EDIT      (on/off)   Help
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NE6
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NW1
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NE4
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NE7
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G14
E12
G19
NE8
G15
SE7
G12
E9
G13

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from JPS (wind in knots)
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Last 24hr------------------------------------E6NE5CalmCalmCalmCalm
1 day agoNE5----------------------------------E6NE6E6NE5CalmCalm
2 days ago--E5----E13E12--SE15
G22
SE15
G20
SE12
G22
SE15
G20
E17
G26
------------NE5NE5NE5NE5----

Tide / Current Tables for Las Mareas, Puerto Rico
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Las Mareas
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Tue -- 01:19 AM AST     0.75 feet High Tide
Tue -- 05:51 AM AST     Sunrise
Tue -- 09:27 AM AST     Moonrise
Tue -- 12:41 PM AST     -0.08 feet Low Tide
Tue -- 07:03 PM AST     Sunset
Tue -- 10:26 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.70.70.70.60.50.40.30.20.10.1-0-0.1-0.1-0.1-000.10.20.30.40.40.50.6

Tide / Current Tables for Arroyo, Puerto Rico
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Arroyo
Click for Map
Tue -- 02:20 AM AST     0.83 feet High Tide
Tue -- 03:36 AM AST     0.57 feet Low Tide
Tue -- 05:51 AM AST     Sunrise
Tue -- 09:26 AM AST     Moonrise
Tue -- 11:35 AM AST     0.62 feet High Tide
Tue -- 02:31 PM AST     -0.11 feet Low Tide
Tue -- 07:03 PM AST     Sunset
Tue -- 10:26 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.80.80.70.60.60.60.60.60.60.60.60.60.3-0.1-0.1-0.1-000.10.20.30.50.6

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 (22,6,7,8)
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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.