Monday, March27, 2017 L-36.com


Marine Weather and Tides
Daguao, 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 6:18AMSunset 6:36PM Monday March 27, 2017 6:39 AM AST (10:39 UTC) Moonrise 6:01AMMoonset 6:21PM Illumination 0% Phase: New Moon; Moon at 29 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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AMZ725 Coastal Waters Of Southern Usvi Vieques And Eastern Puerto Rico Out 10 Nm- 401 Am Ast Mon Mar 27 2017
Today..South winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 8 seconds. Scattered showers.
Tonight..South winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Scattered showers.
Tuesday..South winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Scattered showers.
Tuesday night..East winds 5 to 10 knots backing north after midnight. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Scattered showers.
Wednesday..North winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers.
Thursday..Northeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
Friday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
AMZ700 401 Am Ast Mon Mar 27 2017
Synopsis for puerto rico and the uS. Virgin islands waters... Light south to southwest winds are expected through at least Tuesday as a surface low north of hispaniola continues to move northeastward. The northerly swell will continue to subside today. Another northerly swell generated by the surface low is forecast to reach the atlantic waters and passages by the middle of the week.

7 Day Forecast for Marine Location Near Daguao, PR
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location: 18.19, -65.62     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 270801
afdsju
area forecast discussion
national weather service san juan pr
401 am ast Mon mar 27 2017

Synopsis A surface low over the atlantic waters northwest of
pr will continue to move north northeast into the western atlantic for
the next few days. A surface high will build across the western
atlantic just northwest of the surface low, spreading into the
local area by midweek as the surface low moves east into the
central atlantic. Drier air at mid levels is expected to continue
moving in through the end of the week. Light southerly winds will
continue until Monday, becoming very light on Tuesday, then
northerly and increasing on Wednesday and Thursday.

Short term Today through Wednesday...

doppler weather radar indicated isolated to scattered showers
moving northward from the caribbean waters across the u.S. Virgin
islands, vieques, culebra as well as across the eastern sections
of puerto rico overnight and early this morning. However, no
significant rainfall amounts were measured. Elsewhere over land
areas not significant precipitation was detected.

A surface low pressure system to the north of hispaniola this
morning will continue to bring a relatively moist southerly wind
flow across puerto rico and the u.S. Virgin islands today. Less
cloud cover is expected today across the region and therefore
diurnal heating in combination with sea breeze convergence and
other local effects will induce the development of showers and
possible thunderstorms along and north of cordillera central,
including the san juan metro area during the afternoon hours.

Urban and small stream flooding are possible over northern puerto
rico. As the low moves further northeastward over the atlantic
waters, moisture will continue to decrease across the local
islands tonight and Tuesday. However, the lingering moisture in
combination with local effects will induce the development of
some convection each afternoon specially across the interior and
northern sections of puerto rico. Due to the expected southerly
wind flow, warmer than normal temperatures are possible across
the northern coastal municipalities of puerto rico during the
next few days.

Long term Thursday through Monday...

the surface low will continue to move north into the north
central atlantic on Thursday and the ridge across the western
atlantic builds north of the islands through the end of the week.

This will generate a northerly wind flow from Wednesday through at
least Saturday. A much drier airmass will prevail over the region
from Thursday through late Friday... This will result fair weather
conditions through this period. East to southeast winds return
from early Saturday through Sunday with moisture increasing from
the southeast... Associated with remnants of the surface
low/frontal boundary.

Aviation Brief periods of MVFR conds will remain possible at
the leeward and usvi TAF sites this morning. Shra/tsra expected
aft 27/16z in and around tjmz, tjbq and tjsj. Light and variable
winds are expected overnight. Latest tjsj sounding indicated a
south southwesterly wind flow at all levels, but very strong
aloft.

Marine Seas will continue to subside this morning. Early this
morning local buoy 41115 in rincon indicated seas of 5 feet while
bouy 41053 in san juan indicated also seas of 5 feet. The small
craft advisories were cancelled. A moderate risk of rip currents
will continue to prevail across some areas during the next few
days.

Preliminary point temps/pops
Sju 88 75 86 77 / 60 40 40 10
stt 84 75 84 75 / 40 40 40 20

Sju watches/warnings/advisories
Pr... High rip current risk until 6 am ast early this morning for
north central-northwest-san juan and vicinity-western
interior.

Vi... None.

Am... None.

Short term... Jf
long term... .Em


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
VQSP4 - 9752619 - Isabel Segunda, Vieques, PR 10 mi52 min S 1.9 G 2.9 76°F
FRDP4 - 9753216 - Fajardo, PR 10 mi52 min S 1.9 G 4.1 75°F 72°F
ESPP4 - 9752695 - Esperanza, PR 10 mi52 min S 8.9 G 11 79°F 79°F1012 hPa
41056 10 mi70 min S 7.8 G 9.7 78°F 1010.9 hPa
YABP4 - 9754228 - Yabucoa Harbor, PR 15 mi52 min N 1.9 G 2.9
CLBP4 - 9752235 - Culebra, PR 19 mi52 min 77°F 79°F1012.2 hPa
41053 - San Juan, PR 32 mi70 min SSE 5.8 G 9.7 77°F 1011.1 hPa
SJNP4 - 9755371 - San Juan, PR 32 mi52 min S 4.1 G 6 76°F 80°F1011.9 hPa
JOXP4 - Jobos Bay Reserve, Puerto Rico 36 mi115 min Calm 74°F 1012 hPa72°F
CHAV3 - 9751639 - Charlotte Amalie, VI 38 mi52 min SSE 1 G 2.9 78°F 81°F
41052 - South of St. John, Virgin Islands 46 mi70 min SE 9.7 G 12 80°F 1011.1 hPa
LAMV3 48 mi52 min 78°F 81°F

Wind History for Isabel Segunda, Vieques Island, PR
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR26 mi44 minSSE 310.00 miA Few Clouds75°F73°F94%1011.9 hPa

Wind History from JSJ (wind in knots)
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Last 24hrCalmS4SE7SE7S9
G17
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SE5SE5SE7SE6S3CalmSE3CalmCalmS3CalmCalmCalmCalmS3
1 day agoSE7SE7SE85SE8
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S7S4SE6S7CalmCalmCalmNW3SW4S6S4
2 days agoS3CalmSE3CalmE4E9E9E5SW3NE4E6E6E6SE5SE4SE3E5SE4E4SE3S5SE5CalmS5

Tide / Current Tables for Roosevelt Roads, Puerto Rico
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Roosevelt Roads
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Mon -- 02:27 AM AST     0.00 feet Low Tide
Mon -- 06:01 AM AST     Moonrise
Mon -- 06:20 AM AST     Sunrise
Mon -- 08:30 AM AST     0.87 feet High Tide
Mon -- 02:55 PM AST     0.06 feet Low Tide
Mon -- 06:21 PM AST     Moonset
Mon -- 06:35 PM AST     Sunset
Mon -- 08:48 PM AST     0.89 feet High Tide
Mon -- 10:59 PM AST     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.30.1000.10.30.60.70.90.90.80.60.40.20.10.10.10.30.50.70.90.90.80.7

Tide / Current Tables for Vieques Passage, Puerto Rico Current
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Vieques Passage
Click for Map
Mon -- 01:13 AM AST     -0.00 knots Slack
Mon -- 04:25 AM AST     -0.71 knots Max Ebb
Mon -- 06:01 AM AST     Moonrise
Mon -- 06:20 AM AST     Sunrise
Mon -- 07:36 AM AST     0.00 knots Slack
Mon -- 10:35 AM AST     0.65 knots Max Flood
Mon -- 01:34 PM AST     -0.00 knots Slack
Mon -- 04:43 PM AST     -0.72 knots Max Ebb
Mon -- 06:21 PM AST     Moonset
Mon -- 06:35 PM AST     Sunset
Mon -- 07:49 PM AST     0.00 knots Slack
Mon -- 10:55 PM AST     0.73 knots Max Flood
Mon -- 10:59 PM AST     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.1-0.3-0.5-0.7-0.7-0.5-0.20.10.40.60.60.50.2-0.2-0.5-0.7-0.7-0.6-0.30.10.40.60.7

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 (6,6,7,8)
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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.