Sunday, June16, 2019 L-36.com


Marine Weather and Tides
Isabela, PR

Version 3.4
NOTICE
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 5:51AMSunset 7:07PM Sunday June 16, 2019 1:25 PM AST (17:25 UTC) Moonrise 6:38PMMoonset 5:12AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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
AMZ742 Coastal Waters Of Northwestern Puerto Rico Out 10 Nm- 1044 Am Ast Sun Jun 16 2019
Rest of today..Northeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated Thunderstorms in the afternoon.
Tonight..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Scattered showers.
Monday..Northeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated Thunderstorms in the afternoon.
Monday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Tuesday..East 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..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated Thunderstorms. Scattered showers.
Thursday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated Thunderstorms. Scattered showers.
AMZ700 1044 Am Ast Sun Jun 16 2019
Synopsis for puerto rico and the uS. Virgin islands waters... Surface high pressure spread across the west and central atlantic, will continue to yield moderate to fresh trade winds across the region during the next several days. This will result in choppy seas across the regional waters and local passages. A weak tropical wave will continue to cross the local caribbean waters during the rest of the day. This will aid in bringing periods of showers and isolated Thunderstorms with areas of locally heavy rains over portions of the caribbean waters and local passages. Increasing winds and seas are forecast for the southern part of the Mona channel and the outer caribbean waters by Wednesday.


7 Day Forecast for Marine Location Near Isabela zona urbana, PR
   Hourly   EDIT   Help
location: 18.5, -67.01     debug


Area Discussion for - San Juan, PR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxca62 tjsj 161522
afdsju
area forecast discussion
national weather service san juan pr
1122 am ast Sun jun 16 2019

Update
Cloudiness and shower activity in and around the islands continued
to diminish and disappear by late morning, leaving mostly sunny
to partly cloudy skies. Recent tjsj 16 12z upper air sounding data
suggest a gradual drying trend with layered precipitable water
now down to 1.73 inches compared to recent days. Moderate easterly
low level easterly winds continued across the region with a fairly
decent trade wind inversion noted setting up around 800 millibars
in response to the overall subsidence aloft, and the dry saharan
air layer quickly moving in from the east behind and accompanying
the weak tropical wave now moving across the eastern caribbean waters.

No changes made to the inherited forecast package and reasoning at
this time. Still expect sufficient available trailing moisture across
the islands to combine with daytime heating and local effects to favor
afternoon convective development across portions of the islands. This
will lead to periods of moderate to locally heavy downpours, mostly
of short duration due to the fairly strong low level steering winds.

Aviation update No chg to previous avn discussion. Prevailing
vfr conds durg prd. Isold-sct aftn shra isold still expected in
and around the local islands at least til 17 00z. Sfc wnds mainly
fm E 15-20 kts W ocnl hir gusts and sea breeze variations... Bcmg
e-se less than 10 kts aft 16 23z.

Marine update Choppy wind driven seas expected to continue
during the period. Winds of 15-20 knots and seas occasionally up
to 6 feet expected over most of the regional waters and passages
during the rest of the afternoon and evening hours. Small craft
operators should exercise caution.

Prev discussion issued 337 am ast Sun jun 16 2019
synopsis...

a tropical wave moving across the caribbean waters will bring
additional tropical moisture to the region today. As the tropical
wave exits the region, a saharan air layer will bring hazy skies
due to suspended saharan dust through much of the upcoming work-
week. Another tropical wave will reach the islands by late
Wednesday night or Thursday, increasing the chances of rain across
the islands. A surface high pressures across the atlantic waters
will induce an easterly wind flow across the region.

Short term... Today through Tuesday...

a surface high pressure extending over the atlantic will maintain a
moderate to fresh easterly wind flow across the region. On Sunday, a
weak tropical wave moving across the caribbean and south of the
forecast area will draw a plume of tropical moisture into the
forecast area with expected pw values to peak around 2.10 inches
during the afternoon. This will result in an increase of showers and
isolated thunderstorms streaming over the waters into portions of
eastern puerto rico and the u.S. Virgin islands during the morning
hours and then on Sunday night into Monday. In response to high
moisture content and supported by daytime heating and local effects,
showers and thunderstorms are expected to develop over the interior
and western puerto rico in the afternoon. Showers and possible
isolated thunderstorms moving over the san juan metropolitan area
and eastern puerto rico from EL yunque and the local islands cannot
be ruled out. However, the lack of upper level support, associated
to the convergent subsident flank of a tutt and a building mid-level
ridge, will limit the chance for deep and organized convection.

Rainfall accumulation totals should peak around an inch with
isolated higher amounts with this activity. By Monday, expect a drop
in moisture content and convective development as drier air
accompanied by suspended saharan dust moves in from the east. That
said, mostly stable and hazy skies are expected to prevail across
the region through the rest of the short-term forecast period.

Nevertheless, diurnally induced showers and possible isolated
thunderstorms may develop over western puerto rico each afternoon.

Limited shower activity expected across the u.S. Virgin islands.

Long term... Wednesday through Sunday...

a ridge pattern aloft will limit organize convection through much
of the long-term period. Advective showers should not be ruled
out each day across the windward sections of the u.S. Virgin
islands and puerto rico. Locally induced showers and thunderstorms
will remain possible each afternoon across western puerto rico.

However, a saharan air layer with suspended saharan dust particles
is forecast to move across the islands throughout much of the
work-week. Therefore, hazy skies will remain possible through much
of this period. Another tropical wave will move over the eastern
caribbean by late Wednesday night or Thursday, which could
increase the potential for showers and thunderstorms development.

Model guidance continues to indicate the bulk of moisture off to
the south of the forecast area. A second tropical wave will move
across the eastern caribbean sea on Sunday.

Aviation...

mainlyVFR conditions will prevail during the next 24
hours. However, shra will result in vcsh across the terminals of e-
pr usvi leeward islands through most of the forecast period.

Afternoon convection will bring shra tsra to tjmz tjbq between
16 16z and 17 00z. Brief MVFR conditions possible with this
activity. Light and vrb winds expected overnight, returning from the
e at 15 to 20 knots with higher gusts and sea breeze variations
after 16 14z.

Marine...

the local buoy network was indicating seas between 3 and 4 feet,
except in rincon were seas are below 2 feet. Winds were between 15
and 10 knots across the near-shore waters of puerto rico and the
u.S. Virgin islands. A surface high pressure across the atlantic
ocean, north of the region will produce a moderate to fresh
easterly trade wind flow through the next several days. Mariners
should exercise caution across the local waters due to seas up to
6 feet and winds between 15 and 20 knots.

Winds will increase through this week, and small craft advisories
will remain possible between Wednesday night and Saturday across
the outer caribbean waters and the mona channel.

Preliminary point temps pops
Sju 87 79 89 78 40 40 30 20
stt 88 80 87 79 40 40 20 20

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

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


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
PTRP4 16 mi105 min NNE 8 G 14 89°F
41115 - Rincon, Puerto Rico (181) 17 mi25 min 83°F3 ft
41053 - San Juan, PR 48 mi55 min E 16 G 19 82°F 1016.7 hPa

Wind History for Arecibo, PR
(wind in knots)    EDIT      (on/off)   Help
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
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
Last
24hr
NE10
G16
NE8
G14
E9
G17
NE9
G18
NE11
G17
E6
G12
E8
G13
E6
G10
E5
G8
E4
G7
E6
G11
SE3
SE4
SE3
SE4
SE5
SE2
SE2
E10
G14
E9
G12
NE11
G17
NE9
G15
NE13
G21
NE10
G18
1 day
ago
NE12
G19
NE11
G17
E10
G18
NE15
G24
E12
G20
SE6
G9
SE4
SE4
SE3
SE3
SE4
S4
SE2
SE3
S4
SE3
SE3
S3
--
NE7
G13
E11
G19
E10
G18
NE8
G13
NE10
G18
2 days
ago
NE8
G15
NE13
G23
NE10
G21
NE12
G19
NE13
G20
E6
G12
E7
G13
E6
G10
E4
G8
E3
SE3
SE4
SE4
SE4
S5
SE5
SE4
SE4
E6
E6
G12
NE9
G15
NE7
G12
NE12
G17
NE9
G17

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Aquadilla, Rafael Hernandez Airport, PR6 mi36 minE 18 G 2210.00 miFair and Breezy86°F73°F66%1017.6 hPa

Wind History from JBQ (wind in knots)
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
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
Last 24hrE19
G26
E16
G22
E14
G18
E13E13
G18
E8E10
G15
E13
G17
E6SE7E6E8E8--------E8E8E9E12
G17
E14
G16
E16E18
G22
1 day agoE16
G22
E16
G22
E14
G20
E11E11
G22
CalmE6CalmCalmSE4SE3E4----------E4E3E10E10
G17
E14
G19
E17
G24
E17
G25
2 days agoE17
G22
E16
G23
E15
G21
E12
G19
S5E7E7E6------------------E7E9--E11
G15
E15E16
G22
E18
G20

Tide / Current Tables for Aguadilla, Crashboat Beach, Puerto Rico
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Mayaguez, Puerto Rico
   EDIT      (on/off)   Help   One Week of Data
Mayaguez
Click for Map
Sun -- 02:36 AM AST     0.32 feet Low Tide
Sun -- 05:13 AM AST     Moonset
Sun -- 05:52 AM AST     Sunrise
Sun -- 07:05 AM AST     0.80 feet High Tide
Sun -- 01:24 PM AST     -0.29 feet Low Tide
Sun -- 06:37 PM AST     Moonrise
Sun -- 07:06 PM AST     Sunset
Sun -- 08:34 PM AST     1.73 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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
0.70.50.30.30.40.60.70.80.80.60.40.1-0.1-0.3-0.3-0.10.30.71.21.51.71.71.61.3

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (13,3,4,5)
      (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.