Wednesday, March29, 2017 L-36.com


Marine Weather and Tides
Cataño, PR

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:19AMSunset 6:38PM Wednesday March 29, 2017 5:08 AM AST (09:08 UTC) Moonrise 7:36AMMoonset 8:24PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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
AMZ712 Coastal Waters Of Northern Puerto Rico Out 10 Nm- 400 Am Ast Wed Mar 29 2017
Today..North winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers.
Tonight..Northeast winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Isolated showers.
Thursday..Northeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Isolated showers.
Thursday night..Northeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. North swell 4 to 5 feet after midnight. Isolated showers.
Friday..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. Northeast swell 4 to 5 feet. Isolated showers.
Saturday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. North swell 4 to 5 feet. Scattered showers.
Sunday..East winds 10 to 15 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 13 seconds. North swell 5 to 6 feet. Isolated showers.
AMZ700 400 Am Ast Wed Mar 29 2017
Synopsis for puerto rico and the uS. Virgin islands waters... The local winds will be light and will gradually shift from a northerly direction today as a surface high across the southwest atlantic push the low pressure system north of the islands rapidly to the northeast. The low pressure system is expected to develop a northerly swell, which is forecast to reach the atlantic offshore waters and caribbean passages by Thursday.

7 Day Forecast for Marine Location Near Cataño, PR
   Hourly   EDIT   Help
location: 18.46, -66.12     debug


Area Discussion for - San Juan, PR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxca62 tjsj 290753
afdsju
area forecast discussion
national weather service san juan pr
353 am ast Wed mar 29 2017

Synopsis A surface high across the southwest atlantic will
push the surface low to the northeast of the region further
northeast well away from the local islands. As this happens, the
local winds will shift to the north northeast today. Lingering
moisture across the region will combine with local effects to
induce the development of showers and possible thunderstorms along
and south of cordillera central today. Winds are expected to
become more easterly by the weekend as the surface high drift
eastward while weakening. North swell is expected to affect the
local waters late Wednesday and Thursday.

Short term Today through Friday...

partly cloudy skies prevailed across the local islands overnight.

Some light passing showers were seen across the caribbean coastal
waters. Local area remains under the influence of a surface low
pressure system which was located several hundred miles northeast of
the area. Trailing moisture associated with this feature will
continue to aid in the development of showers and possible
thunderstorms mainly over the cordillera central of puerto rico. The
difference today it is that the wind has shifted northerly. As a
result,shower activity will be focus mainly over the southern slopes
of puerto rico.

As the aformentioned area of low pressure continue to move away from
the area, a drier airmass is expected to encompass the region
Thursday and Friday as a high pressure system builds across the
western atlantic.

Long term Saturday through Wednesday...

a weak surface high pressure is expected to develop across the
central atlantic early in the weekend to maintain an easterly trade
wind flow across the local islands Saturday and Sunday. At the same
time a surface low emerging across the northeastern united states
seaboard will push the surface high eastward while weakening. As
this happens patches of moisture associated with a frontal
remnants will combine with local effects both days to produce an
increase in cloudiness and shower activity across puerto rico and
the u.S. Virgin islands during the weekend, but at this time not
widespread or significant precipitation is expected during this
period.

As the aforementioned surface low and associated frontal boundary
moves northeastward toward the north central atlantic, another
stronger surface high is expected to develop and drift across the
western atlantic. This feature will bring an east northeast trade
wind flow across the forecast area late Monday through at least
Wednesday. An upper level ridge is expected to build and
strengthening over the northeast caribbean during the weekend and
is expected to persist over the region through at least Wednesday.

This feature will inhibit the development of widespread or deep
convection across the local islands during the forecast period,
but moisture embedded in the trades will continue to combine with
local effects to produce some shower activity across western and
interior puerto rico each day.

Aviation MainlyVFR conditions are expected to prevail across all
taf sites through at least 29/16z. Periods of MVFR conditions can be
expected across tjps and tjmz between 29/16z through 29/22z in shra.

Low level winds will be mainly north and northwest at 10 kts or
less.

Marine Seas of 3 to 5 feet will continue to prevail across
the atlantic waters, with seas 2 to 4 feet across the caribbean
waters. A moderate risk of rip current will continue across the
atlantic shoreline of puerto rico today and tonight. A northerly
swell will arrive across the local waters late Wednesday into
Thursday with seas increasing up to 6 feet.

Preliminary point temps/pops
Sju 84 75 84 74 / 20 10 10 10
stt 84 74 85 73 / 40 20 20 20

Sju watches/warnings/advisories
Pr... None.

Vi... None.

Am... None.

Short term... Fc
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
SJNP4 - 9755371 - San Juan, PR 0 mi56 min SSW 4.1 G 5.1 74°F 81°F1013 hPa
FRDP4 - 9753216 - Fajardo, PR 27 mi50 min NW 1.9 G 2.9 74°F 71°F
AROP4 - 9757809 - Arecibo, PR 31 mi50 min S 4.1 G 5.1 73°F
YABP4 - 9754228 - Yabucoa Harbor, PR 32 mi50 min N 1.9 G 1.9
JOXP4 - Jobos Bay Reserve, Puerto Rico 35 mi83 min Calm 72°F 1013 hPa69°F
VQSP4 - 9752619 - Isabel Segunda, Vieques, PR 42 mi50 min N 5.1 G 7 77°F
ESPP4 - 9752695 - Esperanza, PR 43 mi50 min NNE 1 G 1.9 75°F 81°F1012.6 hPa
CLBP4 - 9752235 - Culebra, PR 45 mi50 min 76°F 81°F1012.8 hPa

Wind History for San Juan, PR
(wind in knots)    EDIT      (on/off)   Help
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
12
AM
1
AM
2
AM
3
AM
4
AM
Last
24hr
SE6
SW2
SW3
SW3
W2
E2
N1
G9
NE4
G8
N4
G8
N2
G9
NW5
G8
N5
G9
NW3
G8
SW9
G12
W3
S4
SE4
SE4
S2
SW3
SW4
W3
W3
SW4
1 day
ago
SE6
S4
SE5
G8
SE7
SW1
NW3
G6
NW5
G8
NE4
G7
NE5
G9
E10
G13
NE7
N4
G9
NW2
G5
NW3
G6
NW3
NW1
G4
N1
NW1
SW2
S2
SW3
S2
SE4
S5
2 days
ago
SW6
SW7
S3
SE7
SE9
G12
SE12
SE9
SE7
G13
SE11
G15
W2
W2
S3
W4
SE10
G14
S2
SW6
S5
S5
S4
SE5
S3
SE4
S5
SE8

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR7 mi12 minN 010.00 miPartly Cloudy74°F73°F100%1012.9 hPa

Wind History from JSJ (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 24hrCalmCalmS3S6S7W3NE6NE7N5N5N5N6W8CalmCalmCalmCalmCalmCalmCalmCalmCalmS3Calm
1 day agoS3S3S3S74NW11NW4NE7E6E6N8NW9NW74NW5NW5CalmCalmCalmS3S3S3S3Calm
2 days agoS4CalmS4SE7SE7S9
G17
SE9SE11
G19
SE11S9
G15
SE5SE5SE7SE6S3CalmSE3CalmCalmS3CalmCalmCalmCalm

Tide / Current Tables for San Juan, La Puntilla, San Juan Bay, Puerto Rico
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
San Juan
Click for Map
Wed -- 03:59 AM AST     0.04 feet Low Tide
Wed -- 06:20 AM AST     Sunrise
Wed -- 07:36 AM AST     Moonrise
Wed -- 09:52 AM AST     1.23 feet High Tide
Wed -- 03:57 PM AST     -0.10 feet Low Tide
Wed -- 06:37 PM AST     Sunset
Wed -- 08:23 PM AST     Moonset
Wed -- 10:33 PM AST     1.61 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.10.70.40.100.10.40.711.21.21.10.90.50.2-0-0.100.30.61.11.41.61.6

Tide / Current Tables for Boca De Cangrejos, Isla Verde, San Juan, Puerto Rico
   EDIT      (on/off)   Help   One Week of Data
Boca De Cangrejos
Click for Map
Wed -- 04:24 AM AST     0.15 feet Low Tide
Wed -- 06:20 AM AST     Sunrise
Wed -- 07:35 AM AST     Moonrise
Wed -- 10:11 AM AST     1.12 feet High Tide
Wed -- 04:17 PM AST     -0.03 feet Low Tide
Wed -- 06:37 PM AST     Sunset
Wed -- 08:23 PM AST     Moonset
Wed -- 10:56 PM AST     1.47 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.10.80.50.30.20.20.30.60.811.11.10.90.60.30.1-000.20.50.91.21.41.5

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 (5,6,7,8)
      (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.