Monday, October14, 2019

Marine Weather and Tides
Esperanza, PR

Version 3.4
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at Allen

Sunrise 6:14AMSunset 6:02PM Monday October 14, 2019 9:03 PM AST (01:03 UTC) Moonrise 6:49PMMoonset 6:46AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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- 439 Pm Ast Mon Oct 14 2019
Tonight..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated Thunderstorms through the night. Scattered showers after midnight.
Tuesday..Southeast winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Scattered showers through the day. Isolated Thunderstorms in the afternoon.
Tuesday night..Southeast winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 8 seconds. Isolated Thunderstorms in the evening. Scattered showers through the night.
Wednesday..Southeast winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 8 seconds. Isolated showers.
Wednesday night..East winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Scattered showers.
Thursday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 8 seconds. Scattered showers.
Friday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Scattered showers.
Saturday..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 11 seconds. Scattered showers.
AMZ700 439 Pm Ast Mon Oct 14 2019
Synopsis for puerto rico and the uS. Virgin islands waters... A northerly swell continues to weaken across the regional waters. Winds are expected to be a bit stronger starting tonight, coming out of the east at 10 to 15 knots. There is a chance of showers and Thunderstorms each afternoon across the waters surrounding western puerto rico.

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 141747
area forecast discussion
national weather service san juan pr
147 pm ast Mon oct 14 2019

An increase in showers and thunderstorms are expected over the
next several days as moisture increases from an approaching
tropical wave, and a tutt low cutoff from the main flow. Then by
the middle of the week unsettled and wet continues are expected
to prevail through the weekend. These conditions are a result of
increasing moisture from the deep tropics combining with a cutoff
low to the south of puerto rico. Also, this activity will be
propelled by local and diurnal effects.

Short term... Rest of today through Wednesday...

light easterly winds and increasing low level moisture convergence
will continue across the region today. The tutt and weak upper low
northeast of the northern leewards will remain in place, but is
expected to gradually become amplified and sink southwest across the
northern leewards and northeast caribbean by Wednesday while
strengthening. This will maintain a nw-n anticyclonic wind flow in
the upper levels through Wednesday and thus provide good ventilation
across the region through the period. Forecast soundings continue to
suggest increasing instability aloft resulting in better chance for
convection over the region during the period. This along with an
induced surface trough in place, and a tropical wave approaching the
area will favor a fairly moist and unstable environment at least
through Tuesday. This expected scenario will be followed a gradually
drying trend on Wednesday as a drier air mass accompanying a saharan
air layer will move across the region.

That said and given the current and expected weather pattern, the
forecast calls for mostly scattered showers across the local waters
during the rest of today with increasing potential for thunderstorm
activity throughout the day through Tuesday. Afternoon thunderstorm
activity over land should be focused across the interior and western
pr this afternoon, with enough periods of locally heavy rainfall to
cause urban and small stream flooding in isolated areas. Similar
conditions expected on Tuesday, however increasing cloud coverage
and rainfall intensity is forecast across the islands especially
during the afternoon hours.

On Wednesday, a drier airmass is forecast as an area of saharan dust
crosses the region trailing the tropical wave. Therefore expect
early morning and afternoon convection to be of lesser coverage.

Showers and isolated thunderstorm development will however remain
possible in isolated areas over and around the local islands.

Long term... Thursday through Wednesday...

the long-term period looks unsettled and wet as a result of deep
tropical moisture provided by several tropical waves, and a tutt low
that is forecast to cutoff south of puerto rico.

Thursday, a tutt low beings to deepen to the northeast of puerto
rico during the morning. Additionally, northerly winds will pull
moisture from the central atlantic into puerto rico Thursday
afternoon. The added moisture will combine diurnal and local effect
to produce showers and isolated thunderstorms. Late Thursday night a
tropical wave is forecast to move into the southern caribbean waters
just east of the u.S. Virgin islands.

Friday, the tropical wave will continue to transverse over the u.S.

Virgin islands, culebra and st.Thomas during the morning. Therefore
showers are expected during the morning across the aforementioned
areas. Also on Friday morning the tutt low is forecast to become
cutoff from main flow just to the southeast of puerto rico. The
position of the tutt low is the feature to watch closely if the
tutt low cutoff more to the southwest of the area this will
increase the upper-level divergence over puerto rico, would support
favorable upper-level conditions conducive for the development of
deep convection in the form of numerous showers and thunderstorms.

However, at this time guidance shows puerto rico remaining on the
substance side of the cutoff low, with available moisture and local
effects supporting the development of diurnal convection.

Saturday through the rest of the weekend guidance shows the cutoff
low weakening and moving to the northwest, or over puerto rico. Deep
tropical moisture is expected to continue to move over puerto rico
and the u.S. Virgin islands. Precipitable water values during this
time are forecast to range from 1.8 to 2.2 inches. The moisture and
local effects will support the development of showers and
thunderstorms during the afternoon mainly across the interior and
western areas of puerto rico. However, we can not rule out can't
showers and thunderstorms developing elsewhere during the afternoon.

On Sunday, another surge of moisture is forecast to push across the
u.S. Virgin islands and puerto rico this will continue the unsettled and
unsettled conditions across the region through Tuesday.

Tuesday, moisture is expected to decrease in the afternoon as a
drier air mass enters the area from the east, however, patches of
moisture are expected to move through the area with showers and
isolated thunderstorms as a result of diurnal and local effects.

Wednesday, a tropical wave is forecast to enter the caribbean waters
and increase moisture and showers and isolated thunderstorms.

PrevailingVFR durg prd. Shra isold tsra ovr ctrl and west interior
of pr and vcty usvi and northern leeward islands til 14 23z. Sct-bkn
lyrs nr fl022... Fl050 en route btw islands with isold shra tsra ovr
rest of flying area durg prd. Sfc winds fm e-se btw 10-15 kts with
sea breeze variations bcmg lgt vrb aft 14 23z. Shra isold tsra with
cause brief mtn top obscr ovr ctrl pr til 14 23z.

Choppy seas will continue this afternoon as a northerly swell
continues to weaken across the regional waters. Seas up to 5 feet
are expected over the next several days with the possibility of
showers and isolated thunderstorms. The high risk of rip currents
will continue to decrease as the northerly swell energy continues
to diminish across the local waters this afternoon.

Preliminary point temps pops
Sju 77 89 77 89 40 50 50 30
stt 79 88 77 88 50 50 50 20

Sju watches warnings advisories
Pr... High rip current risk until 6 pm ast this evening for north
central-northeast-northwest-san juan and vicinity-southeast.

Vi... None.

Am... None.

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

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ESPP4 - 9752695 - Esperanza, PR 2 mi63 min NE 1.9 G 2.9 80°F 87°F1014.9 hPa (+0.8)
41056 10 mi63 min ENE 7.8 G 9.7 84°F 86°F3 ft1013.6 hPa (+0.8)
CLBP4 - 9752235 - Culebra, PR 15 mi63 min 83°F 88°F1014.9 hPa (+1.0)
YABP4 - 9754228 - Yabucoa Harbor, PR 20 mi63 min 82°F 76°F
CHAV3 - 9751639 - Charlotte Amalie, VI 32 mi63 min 83°F 1014.8 hPa (+1.1)
41052 - South of St. John, Virgin Islands 38 mi63 min ENE 9.7 G 12 85°F 86°F2 ft1013.5 hPa (+1.0)
LAMV3 41 mi63 min 82°F 87°F
41053 - San Juan, PR 42 mi63 min S 3.9 G 5.8 83°F 86°F4 ft1013.8 hPa (+0.8)
JOXP4 - Jobos Bay Reserve, Puerto Rico 42 mi78 min Calm 80°F 1016 hPa73°F
SJNP4 - 9755371 - San Juan, PR 42 mi63 min S 4.1 G 5.1 82°F 87°F1014.9 hPa (+0.9)
CHSV3 - 9751364 - Christiansted Harbor, Virgin Islands 48 mi63 min E 2.9 G 4.1 83°F 87°F1014.5 hPa (+1.1)
LTBV3 - 9751401 - Lime Tree Bay, VI 48 mi63 min E 1.9 G 5.1 84°F 88°F1014.8 hPa (+1.0)

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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Mon -- 02:08 AM AST     -0.00 knots Slack
Mon -- 05:09 AM AST     -0.52 knots Max Ebb
Mon -- 06:15 AM AST     Sunrise
Mon -- 06:46 AM AST     Moonset
Mon -- 08:02 AM AST     0.00 knots Slack
Mon -- 11:19 AM AST     0.66 knots Max Flood
Mon -- 02:26 PM AST     -0.00 knots Slack
Mon -- 05:49 PM AST     -0.74 knots Max Ebb
Mon -- 06:00 PM AST     Sunset
Mon -- 06:49 PM AST     Moonrise
Mon -- 09:21 PM AST     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
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GEOS 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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Wind Forecast for (21,6,7,8)
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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.