Friday, May24, 2019 L-36.com


Marine Weather and Tides
Emajagua, PR

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 5:46AMSunset 6:53PM Friday May 24, 2019 5:25 AM AST (09:25 UTC) Moonrise 12:00AMMoonset 10:42AM Illumination 72% Phase: Waning Gibbous; Moon at 20 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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AMZ735 Coastal Waters Of Southern Puerto Rico Out 10 Nm- 403 Am Ast Fri May 24 2019
Today..Southeast winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Scattered showers and isolated Thunderstorms.
Tonight..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Scattered showers.
Saturday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers.
Saturday night..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Scattered showers.
Sunday..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 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Scattered showers. Isolated Thunderstorms.
Tuesday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 11 seconds. Isolated Thunderstorms. Scattered showers.
AMZ700 403 Am Ast Fri May 24 2019
Synopsis for puerto rico and the uS. Virgin islands waters... A weak surface trough moving across the caribbean waters will increase the potential for showers and Thunderstorms through this morning. A moderate east to southeast wind flow will continue across the region for the next several days. Seas will increase up to 5 feet across the atlantic waters and passages on Saturday due to a small northerly swell. A second larger, northerly swell is forecast to arrive across the atlantic waters by early next week. Isolated Thunderstorms are expected each afternoon over the western waters of puerto rico.


7 Day Forecast for Marine Location Near Emajagua, PR
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location: 18, -65.88     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 240908
afdsju
area forecast discussion
national weather service san juan pr
508 am ast Fri may 24 2019

Synopsis
A mid- to upper-level low will dominate local weather conditions
through early this weekend. Plenty of tropical moisture will
continue across the islands through at least next week. Shower and
thunderstorm development is likely each day across portions of the
islands.

Short term Today through Sunday...

a mid to upper level trough continues to be the dominant feature
during the short term forecast period. Model guidance suggests that
this system will cross the forecast area today, maintaining somewhat
favorable conditions aloft. These conditions combined with
sufficient moisture content--model pw estimates of 1.90 inches--will
support the development of showers and thunderstorms. This activity
is forecast to cluster over the waters during the morning hours and
along the interior and northwestern quadrant of puerto rico in the
afternoon. Showers and thunderstorms affecting the san juan
metropolitan area cannot be ruled out. Rainfall accumulations
between 1-2 inches with isolated higher amounts are expected with
this activity. That said, the potential for urban and small stream
flooding, as well as mudslides near areas of steep remains remains
elevated today.

Conditions aloft are to gradually turn unfavorable as the mid to
upper level trough continues to drift eastward and away from the
region tonight and continuing into the weekend. Although the
intensity and areas coverage of showers and thunderstorms are
expected to diminish during the weekend, sufficient moisture content
supported by diurnal heating and local effects will enhance the
development of localized afternoon convection across the interior
and western sectors of puerto rico each day. Rainfall accumulations
are forecast to peak at 1.0-1.5 inches on Saturday and 0.5-1.0
inches on Sunday with isolated higher amounts. Although with a lower
potential, the threat for urban and small stream flooding will
continue during the weekend.

Long term Monday through Friday...

although a mid- to upper-level ridge is forecast to build across
northeast caribbean, plenty of tropical moisture will move from
the caribbean sea into the local region increasing the potential
for showers and locally induced thunderstorms Monday and Tuesday.

Model guidance continues to indicate a weak tropical wave moving
off to the south across the caribbean sea by Wednesday or
Thursday. Another mid- to upper-level trough is forecast to
amplify near the region Thursday and Friday. If models are
correct, a wet pattern with favorable conditions for shower and
thunderstorm development may be possible next week.

Aviation Shra tsra will result in vcsh vcts conds and brief MVFR
conditions at tjps, usvi and leeward terminals through 24 14z.

Similar conditions with brief MVFR conds possible are expected at
tjsj between 24 14-18z and tjmz tjbq after 24 18z. Bkn to ovc
between fl020-040 expected with this activity. Light and variable
winds through 24 14z, turning from the ese at 10-15 kt with sea
breeze variations and occasional gusts after 23 14z, particularly
near shra tsra.

Marine
Mariners can expect seas around 4 feet across most of the local
waters. A small northerly swell will persist across the atlantic
waters through at least Saturday. Trade winds will continue from
the east to southeast between 10 and 15 knots, although local
effects will promote higher winds up to 20 knots each afternoon. A
northerly swell will move across the atlantic waters early next
week. There is a moderate risk of rip currents for some north
facing beaches of puerto rico.

Thunderstorm formation are expected across portions of the
coastal waters of puerto rico and the u.S. Virgin islands.

Preliminary point temps pops
Sju 88 77 89 77 50 40 40 40
stt 86 77 88 77 40 40 20 30

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Icp
long term... .Cam
aviation... Icp


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
YABP4 - 9754228 - Yabucoa Harbor, PR 5 mi56 min 77°F 74°F
JOXP4 - Jobos Bay Reserve, Puerto Rico 18 mi101 min N 2.9 77°F 1014 hPa72°F
ESPP4 - 9752695 - Esperanza, PR 23 mi62 min ESE 6 G 8.9 80°F 82°F1013.6 hPa
41056 28 mi86 min E 9.7 G 12 80°F 82°F1012.3 hPa (-0.6)
SJNP4 - 9755371 - San Juan, PR 34 mi56 min Calm G 1 78°F 82°F1013.4 hPa
41053 - San Juan, PR 35 mi86 min S 1.9 G 3.9 79°F 81°F3 ft1012.5 hPa (-0.6)
42085 - Southeast of Ponce, PR 35 mi86 min N 3.9 G 5.8 83°F3 ft1012.2 hPa (-0.5)
CLBP4 - 9752235 - Culebra, PR 37 mi56 min 83°F1013.5 hPa

Wind History for Yabucoa Harbor, PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR30 mi30 minN 010.00 miA Few Clouds79°F73°F82%1013.5 hPa

Wind History from JSJ (wind in knots)
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Last 24hrCalmCalmE6E9E10NE14NE12
G19
E7NE13S6E9E12S3E8E4E7S3CalmS3CalmCalmCalmCalmCalm
1 day agoE5CalmE7E8E10E9
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E100NE5E14E15E14E13E10E9E7E6E7CalmE4E3E4SE4Calm
2 days agoCalmCalmSE5SE6E9SE9NE9NE13
G19
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E13E13E10E9E5E5E6E6SE3E4CalmCalmSE3Calm

Tide / Current Tables for Puerto Maunabo, Puerto Rico
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Puerto Maunabo
Click for Map
Fri -- 02:54 AM AST     0.73 feet High Tide
Fri -- 05:48 AM AST     Sunrise
Fri -- 10:43 AM AST     Moonset
Fri -- 04:59 PM AST     0.11 feet Low Tide
Fri -- 06:52 PM AST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.60.70.70.70.70.70.70.60.60.60.60.50.50.40.30.20.10.10.10.20.20.30.40.5

Tide / Current Tables for Vieques Passage, Puerto Rico Current
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Vieques Passage
Click for Map
Fri -- 02:33 AM AST     0.58 knots Max Flood
Fri -- 05:33 AM AST     -0.00 knots Slack
Fri -- 05:46 AM AST     Sunrise
Fri -- 09:13 AM AST     -0.82 knots Max Ebb
Fri -- 10:41 AM AST     Moonset
Fri -- 12:57 PM AST     0.00 knots Slack
Fri -- 03:49 PM AST     0.52 knots Max Flood
Fri -- 06:51 PM AST     Sunset
Fri -- 07:03 PM AST     -0.00 knots Slack
Fri -- 09:36 PM AST     -0.34 knots Max Ebb
Fri -- 11:58 PM AST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.20.40.60.60.40.2-0.1-0.5-0.7-0.8-0.8-0.6-0.300.30.50.50.40.20-0.2-0.3-0.3-0.2

Weather Map and Satellite Images
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wmap_A
GOES Local Image of    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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (5,6,7,8)
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Ground Weather Radar Station Puerto Rico,Virgin Islands
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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.