Sunday, May26, 2019

Marine Weather and Tides
Esperanza, 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 5:45AMSunset 6:54PM Sunday May 26, 2019 3:44 AM AST (07:44 UTC) Moonrise 12:39AMMoonset 12:21PM Illumination 52% Phase: Third Quarter Moon; Moon at 22 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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AMZ725 Coastal Waters Of Southern Usvi Vieques And Eastern Puerto Rico Out 10 Nm- 846 Pm Ast Sat May 25 2019
Rest of tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
Sunday..East winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Scattered showers in the morning, then isolated Thunderstorms in the afternoon.
Sunday night..East winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Scattered showers.
Monday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated Thunderstorms in the morning. Scattered showers through the day.
Monday night..East winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. East swell around 4 feet after midnight. Isolated showers.
Tuesday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Northeast swell around 4 feet. Scattered showers.
Wednesday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated Thunderstorms. Scattered showers.
Thursday..East winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Isolated Thunderstorms. Scattered showers.
AMZ700 846 Pm Ast Sat May 25 2019
Synopsis for puerto rico and the uS. Virgin islands waters... A moderate easterly wind flow will continue across the regional waters through at least Sunday. A more southeasterly wind flow is expected to return from Sunday night through early next week. A slight increase in seas is forecast Monday night through midweek due to the arrival of a northerly swell across the atlantic waters. Showers with possible isolated Thunderstorms are expected to increase across the regional waters on Monday and Tuesday.

7 Day Forecast for Marine Location Near Esperanza, PR
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location: 18.12, -65.46     debug

Area Discussion for - San Juan, PR
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Fxca62 tjsj 260039
area forecast discussion
national weather service san juan pr
839 pm ast Sat may 25 2019

Update Showers and thunderstorms developed across interior and
western portions of puerto rico during the afternoon hours. The
heaviest rainfall was observed across portions of the
municipalities of las marias, anasco, and mayaguez where 1 to 2
inches of rain fell. For tonight, mainly fair weather conditions
are expected across the local area. On Sunday, moisture is
expected to increase once again. This will result in an increase
in the coverage of showers and thunderstorms across the area.

Scattered showers are expected to increase across the local waters
during the morning hours, affecting portions of the usvi and
eastern pr. Then, during the afternoon hours, heavy showers and
isolated thunderstorms are expected to develop across interior and
the northwest quadrant of pr. Additional showers are likely
across eastern portions of pr, including the san juan metro area.

The heaviest rainfall activity could result in urban and small
stream flooding as well as mudslides in areas of steep terrain.

Across the usvi, even though isolated to scattered showers can be
expected from time to time, significant rainfall accumulations are
not expected at this time.

Aviation Periods of bkn ceilings along with vcsh may result in
brief MVFR conditions at times across tncm tkpk through 26 20z.

Vcsh are possible across the usvi terminals after 26 06z. Shra and
isolated TS are expected in the vicinity of tjbq tjmz tjsj tjps
between 26 16z and 26 22z. This may result in MVFR to possibly ifr
conditions at times. Winds are expected to be light and variable
overnight, increasing to 10 to 15 knots from the ese with sea
breeze variations after 26 14z.

Marine Seas between 2 and 5 feet will prevail across the
regional waters along with a moderate risk of rip currents across
the north-facing beaches of pr, culebra, vieques, and saint thomas
through Sunday.

Prev discussion issued 536 pm ast Sat may 25 2019
synopsis... Fair weather conditions should continue overnight
through early Sunday morning across the forecast area. An easterly
perturbation and a moist environment will increase the potential
for showers and thunderstorms on Sunday. A wetter pattern is
expected to prevail through early next week.

Short term...

a pocket of dry air between 850-700mb is expected to move west of
the forecast area by Sunday morning. This should keep the chances
for showers low through the overnight hours across the islands.

Low level moisture is expected to recover quickly on Sunday as an
easterly perturbation currently just east of the leeward islands
moves into the eastern caribbean. Winds are expected to shift once
again from the southeast and diurnally induced afternoon showers
with isolated thunderstorms should develop mainly over the
interior and northwest quadrant of pr as well over the san juan
metro area. Urban and small stream flooding is possible with these

A moist environment will continue on Monday across
the forecast area with the GFS indicating near 2.25 inches of
precipitable water(pwat) across the caribbean waters and near 2.10
across the usvi and pr. Although there will be some divergence
aloft each day, current model guidance indicates that by early
Monday morning scattered to locally numerous showers with
thunderstorms should increase from the caribbean waters and across
the usvi and the east southern sections of pr. Forecast soundings
are indicating a saturated atmosphere after 12z on Monday and
under a southeast steering wind flow, showers could persist across
the southeastern sections of pr through the day. This will be
followed by additional heavy showers with isolated thunderstorms
along the northern and western sections of pr. Saturated soils on
Monday could lead to mudslides and quick river rises with the
heaviest showers.

Long term... Tuesday through Saturday... From prev discussion
recent model guidance, which has been fairly consistent, suggests
that a wet pattern will dominate through most of the long-term
forecast period. This is the result of high tropical moisture
advection into the region with pw model estimated values ranging
from 2.12 inches on Tuesday morning to 1.70 inches on Friday
afternoon. In addition, two independent southeasterly propagating
mid to upper level short-wave troughs will approach the region,
resulting in favorable upper level conditions. The peak of this
activity is expected on Tuesday into Wednesday and then on
Thursday when each trough is forecast to move across hispanola,
which places the associated divergence pattern over the forecast
area. If models are correct, these conditions will support
enhanced shower and thunderstorms development across the local
islands and waters through the end of the workweek. Conditions are
to improve on Saturday, but afternoon convection remains

Aviation...VFR conds entire prd except for shra psbl isold tsra
with brief MVFR mainly ovr ctrl mtn range of pr and vcty
tjmz tjbq tjsj tjnr til 25 23z. Sct-bkn lyr nr fl030... Fl050...

fl100... Mostly clr abv. Few tops abv fl300 W tsra.Sfc wnd fm E 10-15
kt with sea breeze variations and occasional gusts... Bcmg lgt vrb
aft 25 22z.

Marine... Seas between 3-5 feet and east winds up to 15 kt will
continue through the rest of the weekend. Seas will increase
between 4-6 feet later on Monday and continue through at least
Tuesday due to a long period northerly swell. This swell will
increase the risk of rip currents along the northern beaches of
the islands. East to southeast winds will prevail from late
Sunday through early next week.

Preliminary point temps pops
Sju 78 89 77 88 10 40 40 40
stt 79 87 77 85 30 30 30 20

Sju watches warnings advisories
Pr... None.

Vi... None.

Am... None.

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

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ESPP4 - 9752695 - Esperanza, PR 2 mi44 min NNE 1.9 G 4.1 77°F 82°F1014.1 hPa (-1.5)
41056 10 mi44 min ENE 7.8 G 7.8 80°F 82°F1013 hPa (-1.5)
CLBP4 - 9752235 - Culebra, PR 15 mi44 min 78°F 83°F1014.2 hPa (-1.4)
YABP4 - 9754228 - Yabucoa Harbor, PR 20 mi44 min 76°F 73°F
CHAV3 - 9751639 - Charlotte Amalie, VI 32 mi44 min 79°F 1013.6 hPa (-1.7)
41052 - South of St. John, Virgin Islands 38 mi44 min E 12 G 14 81°F 82°F2 ft1012.6 hPa (-1.5)
LAMV3 41 mi44 min 79°F 82°F
41053 - San Juan, PR 42 mi44 min ESE 7.8 G 9.7 80°F 81°F4 ft1013.3 hPa (-1.3)
JOXP4 - Jobos Bay Reserve, Puerto Rico 42 mi119 min N 1.9 77°F 1016 hPa72°F
SJNP4 - 9755371 - San Juan, PR 42 mi44 min E 5.1 G 8 80°F 82°F1014.2 hPa (-1.3)
CHSV3 - 9751364 - Christiansted Harbor, Virgin Islands 48 mi44 min E 4.1 G 8 79°F 83°F1013.2 hPa (-1.3)
LTBV3 - 9751401 - Lime Tree Bay, VI 48 mi44 min E 2.9 G 7 80°F 84°F1014 hPa (-1.3)

Wind History for Isabel Segunda, Vieques Island, PR
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1 day
2 days

Airport Reports
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Tide / Current Tables for Vieques Island, 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 Vieques Passage, Puerto Rico Current
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Vieques Passage
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Sun -- 12:39 AM AST     Moonrise
Sun -- 01:14 AM AST     0.00 knots Slack
Sun -- 04:15 AM AST     0.42 knots Max Flood
Sun -- 05:46 AM AST     Sunrise
Sun -- 07:01 AM AST     -0.00 knots Slack
Sun -- 10:42 AM AST     -0.70 knots Max Ebb
Sun -- 12:21 PM AST     Moonset
Sun -- 12:34 PM AST     Last Quarter
Sun -- 02:15 PM AST     0.00 knots Slack
Sun -- 05:21 PM AST     0.56 knots Max Flood
Sun -- 06:52 PM AST     Sunset
Sun -- 08:43 PM AST     -0.00 knots Slack
Sun -- 11:29 PM AST     -0.39 knots Max Ebb
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 (3,6,7,8)
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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.