Thursday, May23, 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 5:51AMSunset 6:57PM Thursday May 23, 2019 10:43 AM AST (14:43 UTC) Moonrise 11:20PMMoonset 9:55AM Illumination 79% Phase: Waning Gibbous; Moon at 19 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
AMZ735 Coastal Waters Of Southern Puerto Rico Out 10 Nm- 1024 Am Ast Thu May 23 2019
Rest of today..Southeast winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
Tonight..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Scattered showers.
Friday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Scattered showers.
Friday night..East winds 10 to 15 knots. Seas 1 to 3 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. Isolated showers.
Sunday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Isolated showers.
Monday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Scattered showers. Isolated Thunderstorms.
AMZ700 1024 Am Ast Thu May 23 2019
Synopsis for puerto rico and the uS. Virgin islands waters... A light to moderate east southeast wind flow will continue across the local waters for the next several days. There is a chance for isolated Thunderstorms across the regional waters during the afternoon and overnight hours. Seas will increase up to 5 feet across the atlantic waters and passages on Saturday due to a small northerly swell. A second northerly swell is forecast to arrive across the atlantic waters by early next week.

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

Area Discussion for - San Juan, PR
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxca62 tjsj 230908
area forecast discussion
national weather service san juan pr
508 am ast Thu may 23 2019

A mid- to upper-level low northwest of the islands will dominate
the local weather conditions through the upcoming weekend. This
feature along with plenty of tropical moisture will enhance the
formation of showers and thunderstorms throughout the day. As this
feature moves eastward, weather conditions should improve
somewhat Friday and Saturday. However, locally induced showers
and thunderstorms are expected each afternoon.

Short term Today through Saturday...

a light to moderate east to southeast wind flow will prevail across
the region. A mid to upper level southeastward propagating trough
will continue to sink across the western atlantic and remain north
of the region through the short term forecast period. As this
feature approaches the forecast area, favorable conditions with a
divergence pattern aloft will persist today. These conditions
combined with plenty tropical moisture--model precipitable water
estimates between 1.7 and 2.0 inches--will result in enhanced shower
and thunderstorm development. However, a layer of mid to upper level
clouds could significantly reduce the impact of these conditions
and limit the intensity and areal coverage of this activity.

Overall, overnight and morning showers are expected to stream over
the waters into portions of eastern and southern puerto rico, as
well as over the u.S. Virgin islands. As the day progresses, the
bulk of this activity is forecast to shift and cluster along the
interior and western sectors of puerto rico. Showers and isolated
thunderstorm are possible over the san juan metropolitan area, the
u.S. Virgin islands and local waters. Rainfall accumulations are
forecast to peak between 1-2 inches with isolated higher amounts. As
a result, there is a potential for urban and small streams flooding,
as well as mudslides in areas near steep terrain.

Conditions aloft are to gradually turn unfavorable as the mid to
upper level trough continues to drift eastward and away from the
region on Friday into the weekend. Although conditions are expected
to improve during this period, afternoon convection is still
expected to develop and affect the interior and western sectors of
puerto rico each day. Rainfall accumulations are forecast to peak
at around an inch on Friday and half an inch on Saturday with
isolated higher amounts. Given that soils are saturated, the
potential for urban and small stream flooding will continue,
particularly across the northwestern quadrant of puerto rico.

Long term Sunday through Thursday...

model guidances continue to show plenty of tropical moisture next
week. However, model guidance is now backing-up about the final
position of the amplifying trough aloft. Although pw values could
peak between 1.7 and 2.2 inches, the upper-level dynamic could
fade-away during that period. Confidence is low to moderate due to
inconsistencies in the previous solutions. But, if model guidance
is correct, shower and thunderstorm activity will be associated
to low level convergence, and local and diurnal effects through
at least Tuesday.

A tropical wave is forecast to move off to the south of the
islands by Wednesday. Then, another mid- to upper-level trough is
forecast to amplify from the northwest near the islands by
Thursday, which could interact with the lingering tropical

Aviation MainlyVFR conds expected through at least 23 16z.

However, brief shra will result in vcsh at tjsj tist tisx tncm tkpk.

Enhanced afternoon convection will result in vcsh vcts with bkn
to ovc at fl025-030 at tjmz tjbq tjps between 23 16z and 03 06z,
where MVFR conditions are possible. Light and variable winds will
continue, turning from the ese at 10-15 kt with sea breeze
variations and occasional gusts after 23 14z.

Mariners can expect seas of 5 feet or less across the regional
waters. East to southeast winds will prevail at 10 to 15 knots,
although local effects will promote higher winds up to 20 knots
each afternoon. A northerly swell will move across the atlantic
waters next week. There is a moderate risk of rip currents for
the north facing beaches of puerto rico.

Thunderstorm formation are expected across the western coastal
waters of puerto rico this afternoon.

Preliminary point temps pops
Sju 88 78 88 78 40 40 40 40
stt 87 78 86 77 40 40 20 30

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

Short term... Icp
long term... .Cam
aviation... Icp

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
MGIP4 - 9759110 - Magueyes Islands, PR 18 mi50 min SSE 6 G 9.9 84°F 83°F1015.3 hPa
42085 - Southeast of Ponce, PR 20 mi104 min ENE 9.7 G 12 83°F1013.6 hPa (+0.4)
MGZP4 - 9759394 - Mayaguez, PR 23 mi50 min 82°F 83°F1015.2 hPa
AROP4 - 9757809 - Arecibo, PR 26 mi50 min NE 7 G 9.9
JOXP4 - Jobos Bay Reserve, Puerto Rico 30 mi89 min ENE 2.9 85°F 1016 hPa73°F
PTRP4 32 mi34 min NNE 2.9 G 6 83°F
41115 - Rincon, Puerto Rico (181) 34 mi44 min 82°F1 ft
SJNP4 - 9755371 - San Juan, PR 42 mi50 min ENE 9.9 G 11 81°F 82°F1015 hPa
41053 - San Juan, PR 43 mi44 min E 9.7 G 12 81°F 81°F2 ft1014.1 hPa (+0.0)
YABP4 - 9754228 - Yabucoa Harbor, PR 49 mi50 min 86°F 73°F

Wind History for Penuelas (Punta Guayanilla), PR
(wind in knots)    EDIT      (on/off)   Help
1 day
2 days

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
Click EDIT to select an airport
Tide / Current Tables for Punta Guayanilla, Puerto Rico
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
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
   EDIT      (on/off)   Help   One Week of Data
Playa de Ponce
Click for Map
Thu -- 02:21 AM AST     0.86 feet High Tide
Thu -- 05:51 AM AST     Sunrise
Thu -- 09:54 AM AST     Moonset
Thu -- 02:40 PM AST     0.05 feet Low Tide
Thu -- 06:54 PM AST     Sunset
Thu -- 11:18 PM AST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map and Satellite Images
       (on/off)   HelpWeather Map
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (10,2,3,4)
      (on/off)   Help

Ground Weather Radar Station Puerto Rico,Virgin Islands
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.