Friday, December14, 2018 L-36.com


Marine Weather and Tides
La Parguera comunidad, 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 6:50AMSunset 5:55PM Saturday December 15, 2018 12:47 AM AST (04:47 UTC) Moonrise 12:51PMMoonset 12:10AM Illumination 51% Phase: First Quarter Moon; Moon at 8 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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AMZ745 Coastal Waters Of Southwestern Puerto Rico Out 10 Nm- 922 Pm Ast Fri Dec 14 2018
Rest of tonight..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Isolated showers.
Saturday..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. West swell around 4 feet in the afternoon. Isolated showers.
Saturday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. South swell around 4 feet in the evening. Isolated showers through the night.
Sunday..East winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Southeast swell around 4 feet in the afternoon. Scattered showers.
Sunday night..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Southeast swell around 4 feet. Isolated showers through the night.
Monday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 11 seconds. Isolated showers.
Tuesday..East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Isolated showers.
Wednesday..East winds 5 to 10 knots. Seas 2 feet or less. Dominant period 7 seconds. Isolated showers.
AMZ700 922 Pm Ast Fri Dec 14 2018
Synopsis for puerto rico and the uS. Virgin islands waters... A strong high pressure ridge will continue spread across the west and central atlantic waters into the weekend. This ridge will aid in increasing local winds and seas through early Sunday. By late Sunday through Monday, the atlantic high is forecast to shift into the central and northeast atlantic resulting in a weakening of the local pressure gradient. Therefore subsiding trade winds as well as gradually diminishing seas is forecast by early next week. Hazardous and choppy conditions are however forecast through Monday.


7 Day Forecast for Marine Location Near La Parguera comunidad, PR
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location: 17.97, -67.05     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 150121
afdsju
area forecast discussion
national weather service san juan pr
921 pm ast Fri dec 14 2018

Update
Tonight's shower activity was due to the combination of breezy
trade winds and a surge of low-level moisture which brought fast
moving showers across portions of the islands. Satellite and radar
imageries detected a slot of dry air which will filter from the
east across the islands overnight.

Strong surface high pressure drifting from the west to central
atlantic will result in breezy conditions across the area through
at least the upcoming week. Mid-upper level ridge will hold aloft.

As a result, patches of low-level moisture will move periodically
across the region, producing a mixture of sunshine clear skies
and clouds with occasional trade wind showers each day.

Aviation
Quit weather conditions will prevailed overnight, but passing
shra -shra can not be ruled out at tjsj tist tisx tncm tkpk at
times through the forecast period. Calm to light and variable
winds are expected at tjps tjmz, but easterly winds around 10
knots with occasional gusts are expected elsewhere overnight.

Easterly winds will increase at 15 to 20 knots with higher gusts
after 15 13z.

Marine Rough seas up to 7 feet are expected across most of the
regional waters. Seas will increase around 8 feet during the
weekend. Therefore, small craft advisories are in effect.

The risk of rip currents is forecast to turn high for the north
and east facing beaches of puerto rico and the u.S. Virgin
islands tomorrow.

Prev discussion issued 520 pm ast Fri dec 14 2018
synopsis... Surface high pressure across the atlantic will move
east, tightening the pressure gradient this weekend. Surface low
to strengthen across the western atlantic on Monday, weakening
the local winds. Mid and high level ridges to prevail for the next
few days, causing a stable atmosphere. Patches of moisture will
bring bring showers through the weekend.

Short term... Tonight through Sunday...

surface high pressure north of the local area is tightening the
local pressure gradient, causing breezy conditions. Patches of
moisture will bring some showers to the local area but these
should be of short duration. This pattern will continue through
the weekend since we have a mid and upper level ridges which will
keep a stable atmosphere. Forecast soundings show a strong
inversion through the weekend, which indicates that the showers
expected will continue to be brief and shallow, deep convection is
not expected. Bottom line is that this weekend we expect breezy
days with near normal temperatures, mix of Sun and clouds with
isolated to scattered brief showers.

Long term... Monday through Saturday...

From previous discussion...

a strong ridge of high pressure is forecast to hold northwest of
puerto rico through the extended period. The ridge will generate
trade wind showers over the area with easterly winds ranging from
15 to 20 mph. On Tuesday the GFS shows a weak jet stream moving
through puerto rico, then the ridge is expected to strengthen over
the region again. The middle to upper levels of the atmosphere
will remain devoid of significant moisture, thus only scattered
showers are forecast mainly over portions of northern, eastern,
interior areas of puerto rico, and the u.S. Virgin islands.

Showers that develop will be brief and only produce light rainfall
amounts. Otherwise stable weather is forecast through the long-
term period with an occasional passing shower.

Aviation...VFR except for passing low level clds and ocnl shra ovr
regional waters and en route btw islands. Wnds fm E 20-25 kts blo
fl250. Sfc wnds fm E 15-20 kts W ocnl hir gusts bcmg 10 kts or less
aft 14 22z. Sct ocnl bkn lyrs nr fl025... Fl040... Fl080 durg prd.

No sig wx impacts attm.

Marine... High risk of rip currents continue across the northern
beaches of pr and culebra, now also for cramer park in saint
croix. As the winds continue to increase and seas deteriorate
further, northwestern saint thomas will have a high risk of rip
currents as well. Northerly swell to invade the local waters
through the weekend, deteriorating the local seas in combination
of increasing seas. Small craft advisory in effect for most of the
local waters for seas up to 7 feet tonight, increasing up to 8
feet by Saturday.

Preliminary point temps pops
Sju 76 84 75 84 50 50 50 50
stt 76 82 75 81 50 50 50 50

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

Vi... High rip current risk through late Saturday night for st croix.

High rip current risk from 6 am ast Saturday through late
Saturday night for st.Thomas... St. John... And adjacent
islands.

Am... Small craft advisory until 2 am ast Monday for anegada passage
southward to 17n-caribbean waters of puerto rico from 10 nm
to 17n-coastal waters of northern puerto rico out 10 nm-
coastal waters of northern usvi and culebra out 10 nm-
coastal waters of southern usvi vieques and eastern puerto
rico out 10 nm-mona passage southward to 17n.

Small craft advisory until 2 pm ast Monday for atlantic waters
of puerto rico and usvi from 10 nm to 19.5n.

Update... Cam
aviation... Cam


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
MGIP4 - 9759110 - Magueyes Islands, PR 0 mi54 min E 1.9 G 7 78°F 79°F1019.9 hPa
MGZP4 - 9759394 - Mayaguez, PR 18 mi54 min 76°F 82°F1019.7 hPa
42085 - Southeast of Ponce, PR 29 mi108 min ENE 16 G 19 83°F 81°F5 ft1019.1 hPa
41115 - Rincon, Puerto Rico (181) 31 mi48 min 82°F5 ft
AROP4 - 9757809 - Arecibo, PR 40 mi48 min E 5.1 G 6
JOXP4 - Jobos Bay Reserve, Puerto Rico 44 mi63 min ENE 2.9 78°F 1021 hPa70°F
MISP4 - 9759938 - Mona Island, PR 48 mi48 min 78°F 81°F1019.8 hPa (+0.0)

Wind History for Magueyes Island, PR
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Airport Reports
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Tide / Current Tables for Magueyes Island, Caribbean Sea, Puerto Rico
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Magueyes Island
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Fri -- 02:08 AM AST     0.10 feet Low Tide
Fri -- 06:50 AM AST     Sunrise
Fri -- 12:14 PM AST     Moonrise
Fri -- 02:17 PM AST     0.58 feet High Tide
Fri -- 05:54 PM AST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.10.10.10.10.10.20.20.30.30.40.50.50.50.60.60.60.60.50.50.40.40.30.30.2

Tide / Current Tables for Guanica, Puerto Rico
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Guánica
Click for Map
Fri -- 04:06 AM AST     0.11 feet Low Tide
Fri -- 06:50 AM AST     Sunrise
Fri -- 12:13 PM AST     Moonrise
Fri -- 02:46 PM AST     0.56 feet High Tide
Fri -- 05:54 PM AST     Sunset
Fri -- 08:37 PM AST     0.33 feet Low 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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wmap_A
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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Wind Forecast for (23,6,7,8)
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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.