Friday, February22, 2019 L-36.com


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 6:49AMSunset 6:32PM Friday February 22, 2019 11:36 PM AST (03:36 UTC) Moonrise 9:50PMMoonset 9:17AM Illumination 86% Phase: Waning Gibbous; Moon at 18 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- 914 Pm Ast Fri Feb 22 2019
.small craft should exercise caution...
Rest of tonight..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Saturday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Saturday night..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Sunday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Sunday night..Northeast winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Monday..Northeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Scattered showers.
Tuesday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Scattered showers.
Wednesday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Northeast swell 4 to 5 feet. Isolated showers.
AMZ700 914 Pm Ast Fri Feb 22 2019
Synopsis for puerto rico and the uS. Virgin islands waters... A surface high pressure will remain north of the region until it weakens on Saturday. In addition, another strong surface high pressure will move over the western atlantic and north of the area late this weekend into early next week. These features will promote a fresh to strong easterly wind flow across the regional waters, Thus generating hazardous marine conditions over the next several days.


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 230046
afdsju
area forecast discussion
national weather service san juan pr
846 pm ast Fri feb 22 2019

Update
A relative quiet day was observed across the region as a result of
limited moisture, and a strong mid and upper-level ridges.

However, some light showers were observed over the u.S. Virgin
islands and puerto rico, but these showers produced less than a
tenth of rainfall. Tonight temperatures are forecast to be near
the upper 60s to lower 70s near coastal location's, and the lower
to middle 60s in higher elevations. Winds will be out of the east
at 10 to 15 mph.

The mid and upper-level ridge will continue to hold over the
region through the weekend. This will continue to suppress the
vertical development of showers, and promote a strong trade wind
cap. However, at the surface, low-level moisture embedded in the
trades winds will periodically move over the island, and cause
scattered showers through the weekend.

Aviation
Vrf conds will continue to prevail across all terminal sites
through 23 00z. Some -shra are possible across the u.S. Virgin
islands and eastern puerto rico through 23 12z. Sfc winds will
continue from the east at 10 to 15 kts during the overnight
hours, then higher gusts likely during the afternoon.

Marine
Hazardous marine conditions will continue for most local and outer
waters through early Sunday. These conditions are being created by
a surface high that will continue to get stronger north of
island. The high will promote fresh to strong easterly winds of
10 to 15 kts during overnight, then winds will increase to 15 to
20 kts with higher gusts on Saturday. Seas are expected to reach
up to 8 feet tonight through early Sunday morning. A high risk of
rip currents for the most of the beaches of puerto rico except for
the southern beaches. There is a high risk of rip currents for
the u.S. Virgin islands and saint croix.

Prev discussion issued 455 pm ast Fri feb 22 2019
synopsis... Surface high pressure north of the local area will be
replaced by another high pressure slightly further north across
the western into central atlantic. This will maintain breezy
conditions for the next several days. Available moisture will
remain limited through the weekend, causing mainly fair weather
conditions. The marine and surf zone conditions will remain
hazardous until Sunday.

Short term... Tonight through Sunday...

fair weather is expected tonight with the exception of a few
brief showers across the local waters, usvi and northern and
eastern pr. The limited available moisture will allow for these
brief showers but there is no mid or upper level support to cause
the development of afternoon heavy showers, so a fairly stable
atmosphere with a ridge aloft is expected. The local temperatures
are expected to be near normal for the next few days. Overall a
fairly benign weather pattern is expected through the weekend.

Winds would be around 15 mph with occasional higher gusts. The
only hazard is the marine conditions, more details in the marine
section below.

Long term... Monday through Saturday...

from previous discussion...

the ridge aloft will continue to maintain fair weather conditions
on Monday. By Tuesday and Wednesday, model guidance continues to
indicate that the ridge aloft will begin to weaken somewhat as a
deep polar trough moves across the western atlantic. This would
cause a weakening of the trade wind cap and allow for better
moisture pooling across the region through the end of the work
week. If current model guidance continues to hold on its current
solution, the potential exists for better shower activity to
affect the local area starting on Tuesday and continuing through
the end of the work week.

Aviation... MainlyVFR conditions are expected to prevail across all
terminals during the next 24 hours. Vcsh expected mainly across the
local terminals through late this afternoon. Surface winds will
continue from the east between 15-20 kt through at least 23z,
decreasing between 10-15 kt overnight but with occasional higher
gusts.

Marine... Seas are still hazardous and are expected to remain
hazardous through Saturday, improving gradually on Sunday. Seas
up to 8 feet can be expected with winds of about 20 knots,
occasionally higher. There is also a moderate or high risk of rip
currents for many of the local beaches. Seas will be up to 6 feet
on Monday. Latest guidance suggests that another swell could
reach the local areas by Tuesday into the middle of next week,
causing most of the local waters to become hazardous once again.

We still have a small craft advisory in effect and of course the
high risk of rip currents hazard message.

Preliminary point temps pops
Sju 74 84 73 84 40 30 20 20
stt 73 84 72 85 20 20 20 20

Sju watches warnings advisories
Pr... High rip current risk through late Saturday night for culebra-
north central-northeast-northwest-san juan and vicinity-
southeast.

High rip current risk from 6 am ast Saturday through late
Saturday night for mayaguez and vicinity.

Vi... High rip current risk through late Saturday night for st croix-
st.Thomas... St. John... And adjacent islands.

Am... Small craft advisory until 8 pm ast Sunday for anegada passage
southward to 17n-caribbean waters of puerto rico from 10 nm
to 17n.

Small craft advisory until 2 pm ast Sunday for atlantic waters
of puerto rico and usvi from 10 nm to 19.5n-coastal waters
of northern puerto rico out 10 nm.

Small craft advisory until 8 am ast Sunday for coastal waters of
northern usvi and culebra out 10 nm-coastal waters of
southern usvi vieques and eastern puerto rico out 10 nm.

Small craft advisory until 2 am ast Monday for mona passage
southward to 17n.

Small craft advisory until 8 pm ast Saturday for coastal waters
of northwestern puerto rico out 10 nm.

Short term... Tw
long term... .Tw


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGIP4 - 9759110 - Magueyes Islands, PR 18 mi42 min Calm G 1 76°F 79°F1020.4 hPa
42085 - Southeast of Ponce, PR 20 mi96 min ENE 16 G 18 79°F5 ft1019.3 hPa (+1.1)
MGZP4 - 9759394 - Mayaguez, PR 23 mi42 min 76°F 81°F1020.4 hPa
AROP4 - 9757809 - Arecibo, PR 26 mi42 min E 7 G 16
JOXP4 - Jobos Bay Reserve, Puerto Rico 30 mi111 min NNE 2.9 74°F 1022 hPa68°F
PTRP4 32 mi26 min ENE 7 G 12 75°F
41115 - Rincon, Puerto Rico (181) 34 mi36 min 80°F4 ft
SJNP4 - 9755371 - San Juan, PR 42 mi42 min ENE 9.9 G 14 78°F 79°F1021.1 hPa
41053 - San Juan, PR 43 mi36 min E 18 G 21 78°F 79°F6 ft1020 hPa (+0.0)
YABP4 - 9754228 - Yabucoa Harbor, PR 49 mi42 min 79°F 70°F

Wind History for Penuelas (Punta Guayanilla), PR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from JPS (wind in knots)
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Last 24hr--------------------------------------E5NE5NE5--Calm
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Tide / Current Tables for Playa de Ponce, Puerto Rico
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Playa de Ponce
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Fri -- 01:29 AM AST     -0.05 feet Low Tide
Fri -- 06:49 AM AST     Sunrise
Fri -- 09:15 AM AST     Moonset
Fri -- 11:30 AM AST     0.50 feet High Tide
Fri -- 01:56 PM AST     0.03 feet Low Tide
Fri -- 06:30 PM AST     Sunset
Fri -- 09:49 PM AST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.3-0-0-000.10.20.30.30.40.50.50.40.2000.10.10.20.30.30.40.50.5

Tide / Current Tables for Guanica, Puerto Rico
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Guánica
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Fri -- 02:00 AM AST     -0.05 feet Low Tide
Fri -- 06:51 AM AST     Sunrise
Fri -- 09:17 AM AST     Moonset
Fri -- 10:47 AM AST     0.44 feet High Tide
Fri -- 02:27 PM AST     0.02 feet Low Tide
Fri -- 06:31 PM AST     Sunset
Fri -- 09:50 PM AST     Moonrise
Fri -- 11:17 PM AST     0.45 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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Weather Map and Satellite Images
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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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Wind Forecast for (22,6,7,8)
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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.