Wednesday, January24, 2018 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 6:57AMSunset 6:16PM Wednesday January 24, 2018 7:44 AM AST (11:44 UTC) Moonrise 12:04PMMoonset 12:00AM Illumination 52% Phase: First Quarter Moon; Moon at 8 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
    EDIT      (on/off)   Help
AMZ735 Coastal Waters Of Southern Puerto Rico Out 10 Nm- 351 Am Ast Wed Jan 24 2018
.small craft should exercise caution...
Today..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers through the day.
Tonight..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers through the night.
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..Northeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Friday..Northeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Saturday..Northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Southeast swell 4 to 5 feet. Scattered showers.
Sunday..East winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 10 seconds. Southeast swell 4 to 7 feet. Scattered showers.
AMZ700 351 Am Ast Wed Jan 24 2018
Synopsis for puerto rico and the uS. Virgin islands waters... Surface high pressure will continue to build across the west and central atlantic to maintain moderate to locally fresh trade winds across the local waters through Thursday. Increasing northeast winds and hazardous seas are forecast by Friday and into the weekend due to the arrival of another long dominant period northerly swell.

7 Day Forecast for Marine Location Near Jobos, PR
   Hourly   EDIT   Help
location: 17.93, -66.16     debug


Area Discussion for - San Juan, PR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxca62 tjsj 240750
afdsju
area forecast discussion
national weather service san juan pr
350 am ast Wed jan 24 2018

Synopsis Surface high pressure across the central atlantic
will drift eastward while another strong surface high enters the
western atlantic on Friday. A cold front is forecast to move north
of the region during the upcoming weekend. This will result in
breezy conditions across the region. Upper ridge is expected to
hold over the region through early in the weekend.

Short term Today through Friday...

trade wind moisture transport will continue across the region with
occasional cloudiness and brief showers expected to continue into
early morning hours. Rainfall will be mostly light to moderate but
isolated areas along the east coastal sections of pr may experience
quick bursts of locally heavy rains in isolated spots. Increasing
shallow moisture advection today through Thursday will support
isolated to scattered showers development mainly across the interior
and west sections of pr during the afternoon hours. The shower
activity however is expected to quickly stream westwards in the
prevailing moderate trade winds. This will result in minimal
rainfall accumulations. On Friday, lesser moisture transport as
upper ridge slightly erodes supporting somewhat drier conditions
with mostly fair weather and breezy conditions, except for locally
induced afternoon showers over the west and southwest sections of
pr, under a prevailing northeast wind flow.

Long term Saturday through Thursday of next week...

the upper level ridge is expected to erode rapidly Saturday
through Sunday, as a polar trough amplify and spread eastward
across the west and central atlantic. This will provide better
support for shower activity across the u.S. Virgin islands,
vieques, culebra as well as across the eastern half of puerto
rico during the nights and mornings hours followed by more afternoon
convection across portions of the interior and western sections
of puerto rico.

A strong surface high pressure is forecast to move across the
west and central atlantic behind the cold front Saturday and
Sunday. This feature will remain north of the area, producing
breezy east to east-northeast wind flow across the region during
the weekend and until early next week. As a result, cooler
temperatures but more frequent passing shower activity is expected
due to the increasing northeast winds and frontal boundary
moisture which will sinks southwards and be transported across the
region from time to time. Gradually improving weather conditions
are forecast Tuesday through Wednesday with a return of more
typical passing trade wind showers and isolated to scattered
afternoon showers mainly over the west and interior sections of
puerto rico.

Aviation Sct-bkn cld lyrs nr fl022... Fl040... Fl080 with shra
across the regional waters and en route btw islands as well as vcty
tjsj tist tisx through 24 12z. Fm 24 17z-24 22z... Vcsh at
tjbq tjmz tjsj tjnr with brief MVFR conds in passing shra.

. Sfc wnds calm to lgt vrb til 24 14z bcmg fm ene at 10-15 kts with
higher gusts up to 22 kt til 24 22z.

Marine Small craft are urged to exercise caution as seas will
be up to 6 feet. There is a moderate risk of rip currents across
most of the local beaches. Local seas will remain choppy and up
to 6 feet for the next couple of days. A north to northeasterly
swell will invade the local waters late on Friday, which will
likely cause a significant increase in wave heights and hazardous
seas through the weekend. Stay tuned.

Preliminary point temps pops
Sju 86 76 83 73 40 20 20 30
stt 84 74 84 73 50 30 30 30

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Ram
long term... .Jf


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
YABP4 - 9754228 - Yabucoa Harbor, PR 19 mi44 min 73°F
42085 - Southeast of Ponce, PR 20 mi104 min NNE 9.7 G 12 79°F 81°F1014.2 hPa (+0.5)
SJNP4 - 9755371 - San Juan, PR 37 mi44 min 81°F1016.4 hPa (+1.1)
41053 - San Juan, PR 38 mi44 min SSE 3.9 G 5.8 77°F 81°F4 ft1015.5 hPa (+1.2)
41056 44 mi44 min ENE 12 G 16 78°F 3 ft1015.9 hPa (+1.1)
AROP4 - 9757809 - Arecibo, PR 48 mi44 min SE 5.1 G 6

Wind History for Yabucoa Harbor, PR
(wind in knots)    EDIT      (on/off)   Help
Last
24hr
1 day
ago
2 days
ago

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ponce, Mercedita Airport, PR23 mi2.9 hrsN 010.00 miClear66°F66°F100%1015.9 hPa

Wind History from JPS (wind in knots)
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
Last 24hr----------------------------------NE5NE5Calm------Calm
1 day ago----------------------------------NE5--NE5--------
2 days ago----------------------------------CalmCalmCalm--NE5----

Tide / Current Tables for Las Mareas, Puerto Rico
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Las Mareas
Click for Map
Wed -- 06:58 AM AST     Sunrise
Wed -- 07:20 AM AST     0.50 feet High Tide
Wed -- 12:04 PM AST     Moonrise
Wed -- 06:14 PM AST     Sunset
Wed -- 06:20 PM AST     First Quarter
Wed -- 10:07 PM AST     0.08 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.20.20.30.30.40.50.50.50.50.50.40.40.40.30.30.30.20.20.20.20.10.10.10.1

Tide / Current Tables for Arroyo, Puerto Rico
   EDIT      (on/off)   Help   One Week of Data
Arroyo
Click for Map
Wed -- 04:07 AM AST     0.21 feet Low Tide
Wed -- 04:36 AM AST     0.31 feet High Tide
Wed -- 06:58 AM AST     Sunrise
Wed -- 12:03 PM AST     Moonrise
Wed -- 03:17 PM AST     0.43 feet High Tide
Wed -- 06:01 PM AST     -0.09 feet Low Tide
Wed -- 06:14 PM AST     Sunset
Wed -- 06:20 PM AST     First Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.30.30.20.20.30.30.20.20.20.20.30.30.40.40.40.40.1-0.1-0.1-00.10.10.2

Weather Map and Satellite Images
       (on/off)   Help
Weather Map
wmap_A
IR Satellite Image from GEOS
carb_satellite

GOES Local Image of Puerto Rico    EDIT
Geos

Wind Forecast for (6,6,7,8)
      (on/off)   Help

Ground Weather Radar Station Puerto Rico,Virgin Islands
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.