Wednesday, May24, 2017 L-36.com


Marine Weather and Tides
Lomas, 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 5:46AMSunset 6:55PM Wednesday May 24, 2017 11:20 PM AST (03:20 UTC) Moonrise 4:47AMMoonset 5:49PM 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
    EDIT      (on/off)   Help
AMZ712 Coastal Waters Of Northern Puerto Rico Out 10 Nm- 925 Pm Ast Wed May 24 2017
.small craft should exercise caution...
Rest of tonight..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 through the night.
Thursday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. North swell 4 to 5 feet. Isolated showers.
Thursday night..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. North swell 4 to 5 feet. Isolated showers through the night.
Friday..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. Isolated showers.
Friday night..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. 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. Northeast swell around 4 feet. Scattered showers.
Sunday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
Monday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
AMZ700 925 Pm Ast Wed May 24 2017
Synopsis for puerto rico and the uS. Virgin islands waters... A broad surface high pressure will hold over the central atlantic through the weekend. Moderate trade winds will continue through early next week. A 4 to 5 feet long dominant period northeasterly swell will continue across the atlantic waters and passages through late Thursday night. A tropical wave is expected to increase winds by next Tuesday across the caribbean waters.

7 Day Forecast for Marine Location Near Lomas, PR
   Hourly   EDIT   Help
location: 18.28, -65.93     debug


Area Discussion for - San Juan, PR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxca62 tjsj 250126
afdsju
area forecast discussion
national weather service san juan pr
926 pm ast Wed may 24 2017

Update Continue to expect a fair weather pattern with mostly
clear skies and hazy conditions through the end of the workweek
due to a mid level ridge pattern across the forecast area and
suspended dust particles. Warm to hot temperatures will also
continue to prevail across the northern slopes of puerto rico
under an east southeast wind flow. As the ridge pattern erodes the
upcoming weekend, an increase in low level moisture is expected
with a better chance for showers and thunderstorms.

Aviation Vfr conds throught the forecast period. Although
hazy skies will continue, visibilities should remain p6sm.

Light and variable winds overnight.

Marine No change to previous discussion. A 4 to 5 feet long
dominant period northeasterly swell will continue across the
atlantic waters and passages through late Thursday night, peaking
overnight. A high rip current risk is in effect for the northern
beaches of puerto rico and culebra through Thursday.

Prev discussion issued 500 pm ast Wed may 24 2017
synopsis... Broad surface high pressure will continue across the
central atlantic. Sal will linger through the end of the week.

Overall fair weather expected to continue through the weekend. An
upper level trough is forecast to move over the area by early
next week. A tropical wave is expected to enter the eastern
caribbean by Tuesday.

Short term... Today through Friday...

hazy skies and hot temperatures were observed today across the
forecast area. A few clouds developed over the mountains and
northwest portions of pr during the afternoon hours, however no
significant rainfall was detected over land areas. The temperature
at the international airport in san juan reached 93 degrees, this
tied the record set in 1990.

Limited shower activity is expected to continue across the
islands. Saharan air layer will continue to result in hazy skies
and dry mid levels. Above normal temperatures will continue
through the short term period. A slight increase in moisture is
expected on Friday afternoon, this moisture in combination with
diurnal effects will lead to better chances for showers across the
islands. However, no significant rainfall amounts are expected at
the moment.

Long term from previous discussion... Saturday through
Thursday...

an upper level low and an associated trough is forecast to
develop just to the east northeast of the region during the
upcoming weekend. This feature is expected to erode the mid to
upper level ridge that persisted over the region for the last few
days. However, the upper trough axis is forecast to remain east of
the region, maintaining the islands on the subsidence side of the
trough. Surface high pressure across the central atlantic is
expected to maintain moderate easterly trade winds across the
region until early next week. Optical thickness model guidance
suggests that the saharan air layer will persist over the region
through most of the work week and into the upcoming weekend,
resulting in hazy and a relatively dry airmass across the local
islands. Latest surface analysis depicted a tropical wave across
the tropical atlantic. This wave will continue to move westward
and approach to the lesser antilles late Monday and Tuesday. It is
then forecast to move over the eastern caribbean and over the
local islands Tuesday through Wednesday. This feature should bring
an increase in tropical moisture transport and consequently
increase the chance for showers and thunderstorms over the local
islands and surrounding waters next week.

Aviation... MainlyVFR conditions will prevail during the next 24
hours. Surface winds e-ese at 10-15 knots. Light and variable
overnight. Hz due to saharan dust will continue but vsby should
remain p6sm.

Marine... San juan and rincon buoys were indicating a 13-14 second
northeasterly swell at 3-4 feet during the last couple of hours.

Winds are near 15 knots from the east with some gusts in the low
20s. A high rip current risk is in effect for the northern beaches
of puerto rico and culebra through Thursday. Northerly swell will
peak overnight.

Preliminary point temps pops
Sju 78 89 77 88 10 10 10 20
stt 79 89 78 87 10 10 20 40

Sju watches warnings advisories
Pr... High rip current risk until 6 am ast Thursday for culebra-
northeast-southeast.

High rip current risk through Thursday afternoon for north
central-northwest-san juan and vicinity-western interior.

Vi... None.

Am... None.

Short term... Om
long term... .Om


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 16 mi50 min ESE 7 G 8.9 82°F 83°F1018.9 hPa
FRDP4 - 9753216 - Fajardo, PR 16 mi50 min E 11 G 14 82°F 75°F
YABP4 - 9754228 - Yabucoa Harbor, PR 16 mi50 min ENE 2.9 G 5.1
41053 - San Juan, PR 16 mi50 min E 9.7 G 12 82°F 1018.1 hPa
41056 25 mi50 min E 12 G 16 82°F 1018.6 hPa
VQSP4 - 9752619 - Isabel Segunda, Vieques, PR 27 mi50 min ESE 1 G 4.1 80°F
JOXP4 - Jobos Bay Reserve, Puerto Rico 27 mi95 min N 2.9 80°F 1018 hPa72°F
ESPP4 - 9752695 - Esperanza, PR 28 mi50 min ESE 5.1 G 8.9 81°F 84°F1018.6 hPa
CLBP4 - 9752235 - Culebra, PR 33 mi50 min 82°F 83°F1018.8 hPa
42085 - Southeast of Ponce, PR 43 mi50 min E 14 G 16 84°F 1017.4 hPa
AROP4 - 9757809 - Arecibo, PR 43 mi50 min SSE 2.9 G 4.1 79°F

Wind History for Fajardo, PR
(wind in knots)    EDIT      (on/off)   Help
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
Last
24hr
E10
E9
E9
E11
G14
E11
G14
E11
E10
G13
E9
G12
E10
SE7
G14
SE6
G11
E8
G16
SE7
G12
SE7
G16
E10
G15
E5
G13
E7
G15
SE7
G13
SE5
G11
SE6
G13
SE6
G12
SE8
G12
E8
G12
E10
G13
1 day
ago
E12
G15
E11
G14
E8
E9
E9
G12
E7
E9
E10
E8
E9
E8
G13
E9
G12
SE8
G11
SE7
G10
SE6
G12
SE9
G12
E8
G12
E9
E8
G12
E6
G13
E6
G11
E10
G14
E10
G13
E10
G13
2 days
ago
NE12
NE10
G14
NE8
G11
E9
E9
E9
E7
E8
E9
E7
G10
E9
E7
E6
E6
G9
E6
G10
E6
G9
E5
G9
E9
E8
G11
E7
E9
NE12
E11
E11

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Juan, Luis Munoz Marin International Airport, PR11 mi24 minESE 410.00 miFair82°F73°F77%1018.7 hPa

Wind History from JSJ (wind in knots)
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
Last 24hrE9E6E7E5E7E10E8E8E10E9E15
G22
E13
G21
E8
G17
E17SE8SE9
G17
E13E10E9E7E10E4E9SE4
1 day agoE10E7E7E5SE3E5SE3SE3E7E9E13NE14NE16NE16E16E17
G22
E16E16E15E11E8E8E8E7
2 days agoE11E9E11E7E6E5E5SE3E7E11E10E12NE15NE13NE15
G22
E17E17
G23
E16E13E13E10E12E9E11

Tide / Current Tables for Boca De Cangrejos, Isla Verde, San Juan, Puerto Rico
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Boca De Cangrejos
Click for Map
Wed -- 02:26 AM AST     0.36 feet Low Tide
Wed -- 04:47 AM AST     Moonrise
Wed -- 05:47 AM AST     Sunrise
Wed -- 07:30 AM AST     0.96 feet High Tide
Wed -- 01:47 PM AST     -0.19 feet Low Tide
Wed -- 05:49 PM AST     Moonset
Wed -- 06:53 PM AST     Sunset
Wed -- 08:55 PM AST     1.62 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.50.40.40.50.70.80.90.90.80.60.30-0.1-0.2-0.10.20.611.31.61.61.51.3

Tide / Current Tables for Vieques Passage, Puerto Rico Current
   EDIT      (on/off)   Help   One Week of Data
Vieques Passage
Click for Map
Wed -- 12:17 AM AST     -0.00 knots Slack
Wed -- 03:43 AM AST     -0.97 knots Max Ebb
Wed -- 04:46 AM AST     Moonrise
Wed -- 05:46 AM AST     Sunrise
Wed -- 07:23 AM AST     0.00 knots Slack
Wed -- 09:58 AM AST     0.53 knots Max Flood
Wed -- 12:42 PM AST     -0.00 knots Slack
Wed -- 03:36 PM AST     -0.58 knots Max Ebb
Wed -- 05:47 PM AST     Moonset
Wed -- 06:17 PM AST     0.00 knots Slack
Wed -- 06:51 PM AST     Sunset
Wed -- 09:50 PM AST     0.95 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.1-0.3-0.7-0.9-1-0.8-0.5-0.10.20.40.50.40.2-0.1-0.4-0.5-0.6-0.4-0.10.30.60.90.90.8

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 (23,6,7,8)
      (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.