Friday, May26, 2017 L-36.com


Marine Weather and Tides
Dorado, PR

Version 3.4
What's New / NOTES
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 5:47AMSunset 6:57PM Friday May 26, 2017 8:29 PM AST (00:29 UTC) Moonrise 6:38AMMoonset 8:01PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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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AMZ712 Coastal Waters Of Northern Puerto Rico Out 10 Nm- 502 Pm Ast Fri May 26 2017
Tonight..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Northeast swell around 4 feet after midnight. Scattered showers through the night.
Saturday..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Northeast swell around 4 feet. Scattered showers.
Saturday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Isolated showers.
Sunday..East winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers.
Sunday 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.
Monday..East winds 15 to 20 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 8 seconds. Scattered showers. Isolated Thunderstorms.
Wednesday..East winds 15 to 20 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated Thunderstorms. Scattered showers.
AMZ700 502 Pm Ast Fri May 26 2017
Synopsis for puerto rico and the uS. Virgin islands waters... A broad surface high pressure will remain anchored over the central atlantic through the upcoming weekend. This will result in moderate easterly winds. A tropical wave is forecast to reach the eastern caribbean by early next week. A tutt low is also forecast to develop north and west of the region during this time. This forecast pattern should then increase the potential for Thunderstorms across the regional waters as well as increase local winds and seas.

7 Day Forecast for Marine Location Near Dorado, PR
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location: 18.47, -66.29     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 262055
afdsju
area forecast discussion
national weather service san juan pr
455 pm ast Fri may 26 2017

Synopsis Weakening ridge aloft and lesser saharan dust across
the region, allowed better transport of trade wind showers and
convective development across the coastal waters and parts of the
islands today. Tutt low and associated trough across the lesser
antilles will lift northwards across the region over the weekend.

Broad high pressure ridge across the central atlantic will hold and
allow better transport of trade wind moisture across the forecast
areas overnight and through the weekend.

Short term Rest of today through Sunday...

recent satellite imagery and sal products all suggests the saharan
dust has diminished or moved away from the region. The weakening
of the mid to upper level ridge across the region has also allow
for better moisture transport in the easterlies and for afternoon
convective development especially over puerto rico. Expect activity
over land areas to diminish after sunset. However late evening and
overnight passing showers will remain possible over portions of the
coastal waters, with some brushing the east coastal sections some
of the the islands by early morning.

On Saturday through Sunday the gradual increase in the trade wind
moisture will allow for showers and isolated thunderstorm development
each afternoon. The activity however should be focused mainly over
parts of the central interior and west sections of puerto rico. Isolated
streamer like convection will remain possible over the east interior
and parts of the san juan metro each day.

The tutt is expected to lift north and east of the region through Sunday
while gradually weakening. Conditions aloft should therefore be less
favorable for significant convective development. However, isolated
to scattered afternoon showers will remain likely mainly over western
pr with lesser activity over the adjacent islands and the usvi.

Long term Monday through Saturday...

tutt low will linger north and east of the region, while a short wave
trough will move eastward across the west and southwest atlantic. The
trough is forecast to become amplified just north and west of the region
Monday through Tuesday of next week. The deepening of this mid to upper
level trough along with the approach of a weak tropical wave will increase
the chance for showers and thunderstorms across the forecast area especially
during the early part of next week. So far models all in agreement on
the increase in precipitable water to near two inches across the area
through Tuesday of next week. This should result in increased potential
for convective development and instability at least until the middle
of next week.

For the rest of the week another surge of saharan dust is expected
to accompany or trail the aforementioned wave. This should allow
for a gradual depletion of the trade wind moisture transport and
thus lesser chance for widespread convection. However, lingering
moisture across the islands as well as the proximity of the upper
trough will allow for afternoon convection each day mainly over
parts of the interior and west sections of puerto rico. By then
only isolated showers are forecast elsewhere.

Aviation Mtn top obsc observed over the cordillera central of
pr with shra tsra resulting in sct-bkn ceiling btwn fl020-fl080
at tjbq tjmz and possibly at tjsj til 26 23z. Tempo included for
tjmz due to this activity. Elsewhere isold shra psbl at all other
taf sites til 26 23z. Easterly winds 10-15 knots with higher gusts,
bcmg calm to light and variable aft 26 23z.VFR conds durg rmdr
of prd.

Marine Mariners can expect seas of 5 feet or less and winds 15
knots or less overnight, but increasing to 15 to 20 knots over
some of the local waters on Saturday. There is a moderate risk of
rip currents for the northwest to northeast beaches of puerto rico,
as well as some of the north facing beaches of culebra and saint
thomas and cramer park in saint croix overnight through Saturday
morning.

Preliminary point temps pops
Sju 78 90 77 89 40 40 20 30
stt 78 88 77 89 40 40 30 30

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

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


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SJNP4 - 9755371 - San Juan, PR 9 mi42 min ESE 6 G 8.9
41053 - San Juan, PR 10 mi90 min E 14 G 16 82°F 82°F3 ft1016 hPa (+0.3)
AROP4 - 9757809 - Arecibo, PR 22 mi42 min ESE 4.1 G 5.1 78°F
JOXP4 - Jobos Bay Reserve, Puerto Rico 36 mi105 min ENE 4.1 82°F 1017 hPa73°F
FRDP4 - 9753216 - Fajardo, PR 36 mi42 min E 8 G 11 82°F 75°F
YABP4 - 9754228 - Yabucoa Harbor, PR 38 mi42 min ENE 6 G 9.9
42085 - Southeast of Ponce, PR 44 mi60 min E 14 G 16 83°F 1015.6 hPa
41056 46 mi70 min E 12 G 14 82°F 1016.8 hPa
MGZP4 - 9759394 - Mayaguez, PR 49 mi42 min E 1 G 4.1 76°F 88°F1016.8 hPa

Wind History for San Juan, 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, PR16 mi34 minE 610.00 miPartly Cloudy83°F73°F72%1017.4 hPa

Wind History from JSJ (wind in knots)
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Last 24hrE11E13E11E7E5SE3SE4CalmCalmCalmSE3CalmSE8E5NE9NE13NE12NE13NE12
G22
3S5CalmE8E6
1 day agoE4E9SE4E3E4E7E5E4E6E6E4E8E9E10NE15NE15E16E18E16NE18
G23
NE16E13E13E10
2 days agoE8E8E7E9E6E7E5E7E10E8E8E10E9E15
G22
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G17
E13E10E9E7E10

Tide / Current Tables for San Juan, Puerto Rico
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San Juan
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Fri -- 03:49 AM AST     0.19 feet Low Tide
Fri -- 05:47 AM AST     Sunrise
Fri -- 06:38 AM AST     Moonrise
Fri -- 08:49 AM AST     0.95 feet High Tide
Fri -- 02:56 PM AST     -0.43 feet Low Tide
Fri -- 06:55 PM AST     Sunset
Fri -- 08:00 PM AST     Moonset
Fri -- 10:08 PM AST     1.97 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.20.80.50.30.20.30.50.70.90.90.80.60.3-0.1-0.3-0.4-0.300.511.51.821.9

Tide / Current Tables for San Juan, La Puntilla, San Juan Bay, Puerto Rico
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San Juan
Click for Map
Fri -- 03:50 AM AST     0.18 feet Low Tide
Fri -- 05:47 AM AST     Sunrise
Fri -- 06:38 AM AST     Moonrise
Fri -- 08:48 AM AST     0.93 feet High Tide
Fri -- 02:56 PM AST     -0.45 feet Low Tide
Fri -- 06:55 PM AST     Sunset
Fri -- 08:00 PM AST     Moonset
Fri -- 10:08 PM AST     1.95 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.20.80.50.20.20.30.50.70.90.90.80.60.2-0.1-0.4-0.4-0.3-00.511.51.821.9

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 (20,4,5,8)
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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.