Friday, March22, 2019

Marine Weather and Tides
Santo Domingo, 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 6:28AMSunset 6:39PM Friday March 22, 2019 8:10 PM AST (00:10 UTC) Moonrise 8:30PMMoonset 7:49AM Illumination 96% Phase: Waning Gibbous; Moon at 17 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- 345 Pm Ast Fri Mar 22 2019
Tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
Saturday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds.
Saturday 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.
Sunday..East winds 15 to 20 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 7 seconds. Isolated showers.
Sunday night..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 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 10 seconds. Isolated showers.
Wednesday..East winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers.
AMZ700 345 Pm Ast Fri Mar 22 2019
Synopsis for puerto rico and the uS. Virgin islands waters... Moderate southeast wind flow will persist through the end of the week as surface high pressure settles far northeast of the region. A small northeasterly swell will reach the local atlantic waters on Sunday. Winds will increase somewhat early next week as migratory high pressures moves across the western atlantic.

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 221839
area forecast discussion
national weather service san juan pr
239 pm ast Fri mar 22 2019

Synopsis A weak surface trough has moved across the area today
but drier air is already filtering from the east. Fair weather
conditions are expected during the weekend, but diurnally induced
showers are still possible each afternoon. Another surface trough
will move from the east on Sunday. A broad surface high will move
from the western atlantic into the central atlantic by early next
week, this will maintain an east to southeast wind flow across the
region. An upper level trough and another induced surface trough
are forecast to increase shower activity once again by midweek
next week.

Short term Today through Sunday...

a weak surface trough moved across the islands during the day and
this resulted in passing showers across the southern sections of
puerto rico during the morning hours, this was followed by
scattered showers over the eastern, interior and northwest
sections of puerto rico during the early afternoon hours. As of 3
pm, estimated rainfall amounts were less than an inch of a rain
with the heaviest showers. Streamers developed off the u.S.

Virgin islands, but no significant rainfall was observed over land
areas. Light showers could linger into the evening hours over
western pr, but drier air moving from the east will result in
mostly clear skies and rain free conditions across the rest of the
area through Saturday morning.

The mid level ridge northeast of the region will maintain an
overall dry air mass on Saturday, while a weak mid level trough
northwest of the region should not have a significant impact on
the local weather conditions. Regardless, diurnally induced
afternoon showers are still expected over the western sections of
pr and from streamers off the usvi. On Sunday, another surface
trough is expected to move from the east and this will increase
shower activity once again across the islands.

Long term Monday through Friday...

issued 451 am ast Fri mar 22 2019
a short-wave trough over the eastern caribbean will allow
moisture to pool across the local region early next week. With a
weak cap and higher moisture content, showers will likely to
develop across portions of the islands especially over the west
interior and northwest puerto rico each afternoon. Conditions
will become more favorable for showers on Wednesday as a long
wave trough establishes north of the area. The trough will be
strong enough to push a frontal boundary closer to the local
islands. With deeper moisture pooling across the islands and good
upper level dynamics, the environmental conditions will favor the
development of organized convection. If this unsettled pattern
materializes, the local islands may see some beneficial rainfall
later in the week.

Aviation Vfr conditions will persist across all terminals.

Shra will spread over and to the north of the cordillera central
through the evening hours. This activity will affect the vcty of
tsju tjps through at least 22 22z. Tempos in place for tjbq tjmz
btwn 23 18-20z due to occasional bkn ceiling between fl025-040 and
reduce vis around 5sm during this period. E-se between 10-15
knots with sea breeze variations, becoming light and variable
after 22 23z.

Marine Seas are expected to continue between 2-5 feet in
general across the regional waters through Saturday. A northerly
swell is forecast to increase seas between 4-6 feet between Sunday
and early next week, mainly across the atlantic waters and across
portions of the local passages. Small craft operators should
exercise caution then. East to southeast winds will prevail in
general through next week between 10-15 knots. However, a surface
trough will move from the east on Sunday Monday and a more east
wind flow is expected. Scattered showers will also increase
during this period across most of the local waters.

A moderate risk of rip currents will continue across most of the
east and north facing beaches of the islands through the weekend.

The northerly swell may increase the risk to high across the
northern beaches of pr on Sunday.

Preliminary point temps pops
Sju 74 86 74 87 20 20 30 30
stt 75 85 74 85 0 20 40 40

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Gl
long term... .Ds

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGIP4 - 9759110 - Magueyes Islands, PR 18 mi40 min 79°F 81°F1015.9 hPa
42085 - Southeast of Ponce, PR 20 mi70 min E 12 G 14 80°F3 ft1014.7 hPa (+1.3)
MGZP4 - 9759394 - Mayaguez, PR 23 mi46 min 77°F 81°F1015.8 hPa
AROP4 - 9757809 - Arecibo, PR 26 mi70 min E 6 G 9.9
JOXP4 - Jobos Bay Reserve, Puerto Rico 30 mi85 min E 7 79°F 1017 hPa70°F
PTRP4 32 mi35 min E 5.1 G 8 77°F
41115 - Rincon, Puerto Rico (181) 34 mi40 min 80°F3 ft
SJNP4 - 9755371 - San Juan, PR 42 mi46 min 80°F 80°F1016.2 hPa
41053 - San Juan, PR 43 mi40 min ESE 12 G 16 80°F 1015.3 hPa
YABP4 - 9754228 - Yabucoa Harbor, PR 49 mi40 min 81°F 70°F

Wind History for Penuelas (Punta Guayanilla), PR
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1 day
2 days

Airport Reports
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Tide / Current Tables for Punta Guayanilla, Puerto Rico
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Playa de Ponce, Puerto Rico
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Playa de Ponce
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Fri -- 12:30 AM AST     0.18 feet Low Tide
Fri -- 06:29 AM AST     Sunrise
Fri -- 07:48 AM AST     Moonset
Fri -- 09:52 AM AST     0.61 feet High Tide
Fri -- 12:29 PM AST     0.03 feet Low Tide
Fri -- 06:37 PM AST     Sunset
Fri -- 08:29 PM AST     Moonrise
Fri -- 11:01 PM AST     0.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map and Satellite Images
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GOES Local Image of Puerto Rico    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 (20,4,5,8)
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Ground Weather Radar Station Puerto Rico,Virgin Islands
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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 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 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.