Tuesday, June27, 2017 L-36.com


Marine Weather and Tides
GuŠnica, PR

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
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 5:53AMSunset 7:07PM Tuesday June 27, 2017 1:24 PM AST (17:24 UTC) Moonrise 9:30AMMoonset 10:30PM Illumination 14% Phase: Waxing Crescent; Moon at 4 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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AMZ745 Coastal Waters Of Southwestern Puerto Rico Out 10 Nm- 1043 Am Ast Tue Jun 27 2017
Rest of today..South winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds.
Tonight..Northeast winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds.
Wednesday..East winds 5 to 10 knots veering southeast in the afternoon. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated Thunderstorms in the afternoon.
Wednesday night..Northeast winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated Thunderstorms in the evening. Scattered showers through the night.
Thursday..East winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated Thunderstorms, then isolated showers.
Friday..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
Saturday..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Scattered showers and isolated Thunderstorms.
AMZ700 1043 Am Ast Tue Jun 27 2017
Synopsis for puerto rico and the uS. Virgin islands waters... Surface high pressure extending across the central atlantic will maintain moderate to locally fresh easterly winds across the regional waters through the end of the week. The next tropical wave is forecast to enter and move across the eastern caribbean waters between Thursday and Friday.

7 Day Forecast for Marine Location Near Gu√°nica, PR
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location: 17.97, -66.92     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 271559
afdsju
area forecast discussion
national weather service san juan pr
1159 am ast Tue jun 27 2017

Update Hazy has prevailed across the local islands this
morning. Moisture levels remain just below normal and conditions
are somewhat stable as saharan air layer spread over the northeast
caribbean. As a result... Visibilities are slightly reduced in some
locations. However, diurnal heating will combine with available
moisture and local effects to produce scattered showers over
western pr this afternoon. No significant rainfall accumulations
are anticipated with this activity.

Aviation Vfr conds expected at all TAF sites except tjmz where
brief MVFR conds are possible between 18z-22z with shra isold tsra.

Easterly winds of 15-20 kts will prevail thru forecast period.

Marine Typical marine conditions will continue to prevail
through at least midweek. Mariners can expect seas of 3-5 ft and
winds of 10-20 kts across most waters. Locally fresh winds may
along the coastal waters north and south puerto rico may create
create choppy seas through 21z.

Prev discussion issued 504 am ast Tue jun 27 2017
synopsis... A saharan air layer with extensive area of suspended
saharan dust particulates will linger across the region through
at least Wednesday creating somewhat hazy conditions over the
land areas. A tropical wave will move across the region Thursday.

Short term... Today through Thursday... A surface high pressure
across the central atlantic and an upper low to the north
northeast of the local islands will dominate the weather pattern
today and Wednesday. A relatively dry airmass with a decent
concentration of saharan dust is expected today across the local
area, causing hazy skies and mainly fair weather for most of the
local area, especially in the morning hours. For the afternoon,
the upper trough to the north of the local islands may cause some
instability across the local area, which could cause showers and
thunderstorms to develop across the western sections of pr when
combined with the sea breeze convergence, diurnal heating, and
limited but available moisture. High resolution guidance insists
in afternoon showers and thunderstorms across western pr, although
some guidance suggests the activity across western pr and others
on sw-pr. Bottom line is that the highest chance of rain and
thunder will be in areas of sea breeze convergence across western
into southwestern pr.

Wednesday looks similar to today but the shower activity in the
afternoon should be a bit further north, for western and nw-pr. Then
on Thursday, a tropical wave is expected to move in with rather deep
moisture. This is expected to cause an increase in the shower and
thunderstorm activity coverage across the local forecast area.

Long term... Friday through Wednesday... Lingering moisture
associated with the tropical wave affecting us on Thursday will
maintain high chances for showers and thunderstorms across the
region Friday into Saturday. After the passage of the wave, a much
drier air, with some saharan dust will encompass the region from
the east. Overall, seasonable weather conditions are expected in
the long term.

Aviation...VFR conditions will prevail across all TAF sites through
the next 24 hours across the local terminals, except maybe tjmz
between 27 17z and 27 21z, where shra tsra could develop nearby and
cause tempo MVFR conds. Otherwise fair wx is expected with light
vcsh across the area. Hazy skies are expected across the local area
but visibilities will remain p6sm. Sfc winds will be mainly from the
east at 10 to 15kt with sea breeze variations developing by
27 14z.

Marine... Tranquil marine conditions are expected. Seas up to 5
feet and winds up to 15 knots are expected. Moderate risk of rip
current is expected in some beaches of northwestern puerto rico
and the south coast.

Preliminary point temps pops
Sju 90 79 89 79 10 30 30 10
stt 91 80 90 80 20 30 30 20

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Er


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGIP4 - 9759110 - Magueyes Islands, PR 7 mi66 min SSE 8.9 G 13 85°F 83°F1016.7 hPa
IMGP4 7 mi49 min SE 4.1 G 8.9 94°F
MGZP4 - 9759394 - Mayaguez, PR 21 mi72 min N 1 G 2.9 89°F 88°F1016.7 hPa
42085 - Southeast of Ponce, PR 22 mi84 min ESE 14 G 18 85°F 84°F4 ft1015.7 hPa (-0.6)
PTRP4 33 mi49 min NE 8 G 13 87°F
41115 - Rincon, Puerto Rico (181) 34 mi61 min 84°F2 ft
JOXP4 - Jobos Bay Reserve, Puerto Rico 37 mi99 min E 7 88°F 1018 hPa74°F
AROP4 - 9757809 - Arecibo, PR 37 mi66 min ENE 8 G 14

Wind History for Magueyes Island, PR
(wind in knots)    EDIT      (on/off)   Help
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S8
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G9
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NE1
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G4
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SE10
G16
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G9
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G6
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SE5
G16
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G12
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G9
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G5
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G7
SE4
G11
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G11
S5
G9
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G13
S9
G15
S8
G13

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from JPS (wind in knots)
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Last 24hr------------------------------------E6NE5CalmCalmCalmCalm
1 day agoNE5----------------------------------E6NE6E6NE5CalmCalm
2 days ago--E5----E13E12--SE15
G22
SE15
G20
SE12
G22
SE15
G20
E17
G26
------------NE5NE5NE5NE5----

Tide / Current Tables for Guanica, Puerto Rico
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Guanica
Click for Map
Tue -- 05:54 AM AST     Sunrise
Tue -- 09:30 AM AST     Moonrise
Tue -- 02:14 PM AST     -0.10 feet Low Tide
Tue -- 07:06 PM AST     Sunset
Tue -- 10:29 PM AST     Moonset
Tue -- 11:26 PM AST     0.66 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.70.60.60.50.40.40.30.20.10.10-0-0.1-0.1-0.1-00.10.20.30.40.50.60.7

Tide / Current Tables for Magueyes Island, Caribbean Sea, Puerto Rico
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Magueyes Island
Click for Map
Tue -- 12:27 AM AST     0.72 feet High Tide
Tue -- 05:55 AM AST     Sunrise
Tue -- 09:30 AM AST     Moonrise
Tue -- 01:56 PM AST     -0.10 feet Low Tide
Tue -- 07:07 PM AST     Sunset
Tue -- 10:30 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.70.70.70.60.60.50.40.30.20.20.10-0.1-0.1-0.1-0.1-000.10.20.40.50.60.6

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 (13,3,4,5)
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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.