Wednesday, April25, 2018 L-36.com


Marine Weather and Tides
Jobos, PR

Version 3.4
What's New / NOTES
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.
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.

Sunrise 5:59AMSunset 6:44PM Wednesday April 25, 2018 7:35 PM AST (23:35 UTC) Moonrise 2:59PMMoonset 3:00AM Illumination 81% Phase: Waxing Gibbous; Moon at 11 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- 343 Pm Ast Wed Apr 25 2018
Tonight..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
Thursday..Southeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers.
Thursday 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.
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.
Friday night..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 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
Sunday..East winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers.
Monday..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 343 Pm Ast Wed Apr 25 2018
Synopsis for puerto rico and the uS. Virgin islands waters... A moderate east southeast wind flow will prevail through the weekend then becoming easterly early next week. Showers will increase across the local waterways late night and Thursday with improving conditions on Friday.

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 252017
afdsju
area forecast discussion
national weather service san juan pr
417 pm ast Wed apr 25 2018

Synopsis
An increase in low level moisture is expected tonight and
Thursday, with increasing rain chances tomorrow. A mid to upper
level ridge will build over the area late Thursday and prevail
across the region through early next week with fair weather and an
occasional shower.

Short term Tonight through Friday...

mostly sunny skies prevailed over the u.S. Virgin islands and
puerto rico today with easterly winds ranging from 5 to 15 mph.

Some showers were observed over the atlantic waters but other than
those isolated showers today has been tranquil. A weakening
surface trough near the lesser antilles has pulled low level
moisture into the caribbean and north atlantic waters today with
the bulk of the moisture expected to reach the u.S. Virgin
islands and puerto rico tonight and Thursday morning. As a result
an increase in showers with the possibility for isolated
thunderstorms is expected on Thursday. Early Friday a
strengthening upper and mid level ridge will build across the area
and prevail through the weekend with brisk easterly winds of 15
to 20 mph. Drier air and strong trade winds will limit shower
development across the area on Friday through the weekend.

Long term
A mid to upper level ridge will hold across the forecast area through
the weekend. This feature is expected to quickly erode early the next
workweek as a broad upper level trough establishes across the western
atlantic and into the eastern caribbean. The aforementioned trough
will promote moisture advection across the eastern caribbean Wednesday
onwards. If the long term forecast holds, expect seasonably conditions
Saturday through Tuesday with locally induced afternoon showers
and a few isolated thunderstorms across the western interior and
west areas of puerto rico each day. The chance for showers and
thunderstorms are expected to increase by midweek under deep
tropical moisture and plenty of upper level dynamics associated
with the upper level trough.

Aviation
MainlyVFR conditions are expected to prevail early in
the forecast period. Shra expected to increase from the east across
the usvi terminals by 26 06z then by 26 12z across the eastern pr
terminals. This will be followed by tsra developing after 16z across
the interior and western pr. Tempo MVFR to brief ifr possible with
afternoon activity at tjmz tjbq. Sct-bkn CIGS btw fl030-fl060 and
mtns obscd expected across the pr terminals on Thursday. Winds will
continue from the ese blo fl100 at 8-18 kt with sea breeze
variations at the northern and western terminals aft 26 14z.

Marine
Seas are expected to range from 3 to 4 feet across the coastal
waters while the offshore waters and passages will be near 3 to 5
feet. East southeast winds 10 to 20 kts will prevail over the next
several days. There is a moderate risk of rip currents across the
northern beaches of puerto rico today.

Preliminary point temps pops
Sju 76 89 76 89 20 40 20 20
stt 76 87 76 87 40 20 20 20

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Tw
long term... .Om


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
JOXP4 - Jobos Bay Reserve, Puerto Rico 4 mi111 min E 9.9 81°F 1015 hPa69°F
YABP4 - 9754228 - Yabucoa Harbor, PR 19 mi48 min 82°F
SJNP4 - 9755371 - San Juan, PR 37 mi54 min 82°F 81°F1014.9 hPa
41056 44 mi66 min E 9.7 G 12 80°F 1015 hPa
MGIP4 - 9759110 - Magueyes Islands, PR 47 mi48 min SE 1.9 G 8 81°F 82°F1014.7 hPa
AROP4 - 9757809 - Arecibo, PR 48 mi48 min ENE 8.9 G 13

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

Wind History from JPS (wind in knots)
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
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
Last 24hr----------------------------------------------SE7
1 day ago------------------------------------------------
2 days ago------------------------------------------------

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 -- 02:59 AM AST     Moonset
Wed -- 06:01 AM AST     Sunrise
Wed -- 06:51 AM AST     0.54 feet High Tide
Wed -- 02:52 PM AST     0.16 feet Low Tide
Wed -- 02:59 PM AST     Moonrise
Wed -- 06:43 PM AST     Sunset
Wed -- 10:07 PM AST     0.30 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.30.30.40.50.50.50.50.50.50.40.30.20.20.20.20.20.20.20.30.30.30.30.3

Tide / Current Tables for Arroyo, Puerto Rico
   EDIT      (on/off)   Help   One Week of Data
Arroyo
Click for Map
Wed -- 02:59 AM AST     Moonset
Wed -- 06:00 AM AST     Sunrise
Wed -- 07:53 AM AST     0.80 feet High Tide
Wed -- 09:25 AM AST     0.45 feet Low Tide
Wed -- 02:58 PM AST     Moonrise
Wed -- 06:43 PM AST     Sunset
Wed -- 07:16 PM AST     0.72 feet High Tide
Wed -- 09:15 PM AST     0.22 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.40.40.50.60.70.80.80.80.50.50.50.50.50.60.60.60.70.70.70.60.20.20.2

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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 (19,4,5,8)
      (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.