Sunday, June25, 2017 L-36.com


Marine Weather and Tides
Santo Domingo, 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 5:52AMSunset 7:07PM Sunday June 25, 2017 11:32 PM AST (03:32 UTC) Moonrise 7:26AMMoonset 8:46PM Illumination 4% Phase: Waxing Crescent; Moon at 2 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- 925 Pm Ast Sun Jun 25 2017
.small craft should exercise caution...
Rest of tonight..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Scattered showers.
Monday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Scattered showers.
Monday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers through the night.
Tuesday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Tuesday 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.
Wednesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
Thursday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Friday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
AMZ700 925 Pm Ast Sun Jun 25 2017
Synopsis for puerto rico and the uS. Virgin islands waters... Surface high pressure across the central atlantic will maintain a moderate to locally fresh easterly wind flow across the regional waters much of this week. Winds are expected to slightly increase overnight through Monday as a tropical wave moves across the caribbean waters. This will create choppy and hazardous seas.

7 Day Forecast for Marine Location Near Santo Domingo, PR
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location: 18.1, -66.75     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 260042
afdsju
area forecast discussion
national weather service san juan pr
842 pm ast Sun jun 25 2017

Update The combination of diurnal heating and local effects
produced scattered showers and a couple of thunderstorms during
the afternoon hours across northwestern sections of puerto rico.

This activity dissipates rapidly after sunset.

A tropical wave across the caribbean waters will continue to move
westward tonight and Monday. The moisture associated with this
wave will continue to spread west and north across the caribbean
waters, st croix and southeastern and southern sections of puerto
rico this evening. This moisture advection should favor the
development of showers and thunderstorms across the caribbean
waters and portions of the u.S. Virgin islands and pr on Monday.

The wave is expected to move quickly westward and exit the region
tomorrow afternoon and tomorrow night. In the wake of the
wave, a drier air mass associated with an extensive area of
saharan dust will spread over the region tomorrow afternoon and
continue through Tuesday. This drier airmass is then expected to
encompass the region and limit shower activity.

Aviation Shra tsra associated with a tropical wave will move
into the local flying area tonight and early Monday. Most of the
tsra activity will remain over the caribbean waters... However
brief shra may affect the leeward islands, usvi, eastern and
southern puerto rico at times. MostlyVFR conditions will return
to the region by 26 22z as the wave moves westward and away from
the local flying area.

Marine Mariners can expect overall seas of 3-5 ft, and prevailing
easterly winds of 15-20 knots across most of the coastal waters and
local passages overnight through Monday. This will create choppy
seas. A tropical wave moving across the caribbean overnight
through Monday will increase the chance for isolated thunderstorms
mainly across the caribbean waters. This will also create
hazardous sea conditions mainly across the caribbean waters.

Prev discussion issued 433 pm ast Sun jun 25 2017
synopsis... An overall dry and stable air mass prevailed across
much of the region today with little or no shower activity observed
across the region. The exception was over the west interior of puerto
rico where showers and an isolated thunderstorms developed and produced
brief periods of moderate to locally heavy rainfall. This activity however
was of short duration. A tropical wave continued to cross the eastern
caribbean with associated moisture spreading westward along the leading
edge now just south of the u.S. Virgin islands.

Short term... Rest of today through Tuesday...

moisture associated with the tropical wave will continue to spread
west and north across the region overnight through early Monday
as this wave will quickly move westward and exit the region by
Monday afternoon. This moisture advection should favor the development
of additional showers and thunderstorms across the caribbean waters
and portions of the u.S. Virgin islands and eastern pr. In the wake
of the tropical wave, a drier air mass associated with an extensive
area of saharan dust will spread over the region by Monday afternoon
and continue through Tuesday. This drier airmass is then expected
to encompass the region and limit shower activity.

Long term... Wednesday through Monday...

overall dry and somewhat hazy conditions are expected to prevail across
the islands at least through Wednesday, with shower and thunderstorm
development limited to mainly across the west sections of puerto rico
during the afternoons. Elsewhere, mostly fair weather skies and somewhat
hazy conditions should prevail.

Moisture is expected to quickly increase across the forecast area once
again on Thursday and through the remainder of next week as another
easterly disturbance will arrive and spread across the region area.

Recent model guidance all continue to suggest a fairly moist and unstable
environment will persist across the region at least into the weekend.

Therefore the potential will remain high for shower and thunderstorm
development across the regional waters and local islands at least during
the latter part of next week. Passing late evening and early morning
showers should affect the windward areas, followed by locally and diurnally
induced convection across the interior and west sections of puerto rico
during the afternoon. Some of this activity will also be enhanced due
to the proximity of a developing tutt low Thursday through Friday.

Aviation...VFR conditions will prevail across most of the TAF sites
expect tjbq and tjmz where MVFR are possible in shra tsra thru 22z.

Shra tsra associated with a tropical wave will move into the flying
area this evening. Most of the tsra activity will remain over the
caribbean waters... However brief shra may affect the leeward islands
and usvi at times.VFR conds will return by 26 18z. Low level winds
will be mainly east southeast at 10 to 15 kts.

Marine... Mariners can expect overall seas of 3-5 ft, and prevailing
easterly winds of 15-20 knots across most of the coastal waters and
local passages overnight through Monday. This will create choppy
seas. A tropical wave moving across the eastern caribbean overnight
through Monday will also increase the chance for isolated thunderstorms
mainly across the caribbean waters. This will also create hazardous
sea conditions mainly across the offshore coastal waters.

Preliminary point temps pops
Sju 79 89 79 90 40 40 10 30
stt 79 89 79 90 50 50 20 30

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Jf
long term... .Ram


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
IMGP4 18 mi28 min E 12 G 19 76°F
MGIP4 - 9759110 - Magueyes Islands, PR 18 mi45 min ESE 8 G 15 77°F 83°F1018.5 hPa
42085 - Southeast of Ponce, PR 20 mi63 min NE 16 G 19 78°F 1018.1 hPa
MGZP4 - 9759394 - Mayaguez, PR 23 mi51 min E 4.1 G 8 80°F 88°F1018.1 hPa
AROP4 - 9757809 - Arecibo, PR 26 mi45 min E 4.1 G 6
JOXP4 - Jobos Bay Reserve, Puerto Rico 30 mi108 min NE 2.9 72°F 1020 hPa71°F
PTRP4 32 mi28 min E 2.9 G 6 78°F
41115 - Rincon, Puerto Rico (181) 34 mi70 min 84°F2 ft
SJNP4 - 9755371 - San Juan, PR 42 mi51 min SE 8.9 G 13 76°F 83°F1020 hPa
41053 - San Juan, PR 43 mi93 min SE 12 G 16 76°F 82°F4 ft1019.1 hPa (+2.1)
YABP4 - 9754228 - Yabucoa Harbor, PR 49 mi45 min NNW 1 G 1.9 75°F

Wind History for Penuelas (Punta Guayanilla), PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ponce, Mercedita Airport, PR11 mi43 minE 68.00 miLight Rain73°F71°F94%1020 hPa

Wind History from JPS (wind in knots)
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Last 24hrNE5NE5NE5----NE5----------------------------------E6
1 day agoE5--E5--E5--E5----E13E12--SE15
G22
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2 days agoNE5--NE5NE5--------------------------------------E5

Tide / Current Tables for Punta Guayanilla, Puerto Rico
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Punta Guayanilla
Click for Map
Sun -- 12:28 AM AST     0.81 feet High Tide
Sun -- 05:53 AM AST     Sunrise
Sun -- 07:26 AM AST     Moonrise
Sun -- 12:06 PM AST     -0.19 feet Low Tide
Sun -- 07:05 PM AST     Sunset
Sun -- 08:46 PM AST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.80.70.70.50.40.30.20.1-0-0.1-0.2-0.2-0.2-0.1-0.1-00.10.20.30.50.60.60.7

Tide / Current Tables for Playa de Ponce, Puerto Rico
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Playa de Ponce
Click for Map
Sun -- 05:53 AM AST     Sunrise
Sun -- 07:25 AM AST     Moonrise
Sun -- 12:49 PM AST     -0.28 feet Low Tide
Sun -- 07:05 PM AST     Sunset
Sun -- 08:45 PM AST     Moonset
Sun -- 11:18 PM AST     0.88 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.90.80.70.60.50.40.30.20.1-0-0.1-0.2-0.3-0.3-0.2-0.2-00.10.30.50.60.80.80.9

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 (23,6,7,8)
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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.