Wednesday, January23, 2019 L-36.com


Marine Weather and Tides
Carolina, 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 6:57AMSunset 6:13PM Wednesday January 23, 2019 5:17 AM AST (09:17 UTC) Moonrise 9:04PMMoonset 9:06AM Illumination 94% Phase: Waning Gibbous; Moon at 17 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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AMZ712 Coastal Waters Of Northern Puerto Rico Out 10 Nm- 419 Am Ast Wed Jan 23 2019
.small craft advisory in effect through Saturday morning...
Today..East winds 15 to 20 knots. Seas 8 to 10 feet with occasional seas up to 11 feet. Dominant period 7 seconds. Northwest swell around 4 feet. Scattered showers.
Tonight..East winds 15 to 20 knots. Seas 10 to 12 feet with occasional seas up to 14 feet. Dominant period 9 seconds. Northwest swell 4 to 6 feet. Scattered showers.
Thursday..East winds 15 to 20 knots. Seas 10 to 12 feet with occasional seas up to 14 feet. Dominant period 9 seconds. Northwest swell 5 to 6 feet shifting to the east 4 to 5 feet in the afternoon. Scattered showers.
Thursday night..East winds 15 to 20 knots. Seas 8 to 10 feet with occasional seas up to 13 feet. Dominant period 9 seconds. East swell 4 to 5 feet. Scattered showers.
Friday..East winds 15 to 20 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Dominant period 9 seconds. Northeast swell around 4 feet. Scattered showers.
Saturday..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 8 seconds. Isolated showers.
Sunday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 11 seconds. Northeast swell around 4 feet. Isolated showers.
AMZ700 419 Am Ast Wed Jan 23 2019
Synopsis for puerto rico and the uS. Virgin islands waters... High pressure will build across the western atlantic, causing fresh winds across the local area through tonight. This will create hazardous marine conditions for the next few days. A cold front to the northwest of the local area will move just north of the forecast area, adding some moisture to the area. A lingering pre-frontal trough will bring showers to the local waters. Winds will slowly decrease Friday through Sunday.


7 Day Forecast for Marine Location Near Carolina, PR
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location: 18.46, -65.99     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 230202
afdsju
area forecast discussion
national weather service san juan pr
1002 pm ast Tue jan 22 2019

Update
Trade wind showers were observed across the local waters, north
and east puerto rico. The remnants of a cold front stalled north
of the islands will continue to promote a northeasterly wind flow
between 15 and 20 mph with higher gusts, increasing at 20 to 25
tomorrow and Thursday. This flow will favor low level convergence
and moisture transport increasing the frequency of showers moving
across the waters into coastal areas of northern and eastern
puerto rico early Wednesday morning. This activity will then moved
into the interior and western sections late Wednesday morning into
the afternoon hours. Rainfall accumulations will remain minimal
due to a mid to upper level ridge and the expected rapid movement
of this showers.

Aviation
Trade wind showers could briefly affect tjsj tist tisx tncm tkpk
at times. In general,VFR conditions expected to prevail across
all terminals through the forecast period. Surface winds will
continue e-ene at 10 to 15 increasing at 15-25 kt and gusty after
23 13z.

Marine
No changes were made to the inherited marine forecast. Hazardous
marine conditions are forecast Wednesday through at least Saturday
morning. The risk of rip current will increase to high along the
atlantic coastline of puerto rico and the u.S. Virgin islands as
well as across some north facing beaches of st croix and vieques.

Dangerous breaking wave heights are forecast along the north and
northwest facing beaches of puerto rico and the u.S. Virgin
islands. This breaking waves are forecast to peak between
Wednesday night and early early Thursday morning where minor
coastal beach erosion should not be ruled out.

Prev discussion issued 532 pm ast Tue jan 22 2019
synopsis... The proximity of a cold front and a pre-frontal trough
will bring showers to the local area and increasing winds tonight
through Wednesday night. Marine conditions will become
increasingly hazardous through Wednesday night. Showers will
continue as winds abate Thursday and Friday, then scattered
showers will result from patches of moisture in a more relaxed
easterly flow.

Short term... Tonight through Friday...

high pressure at the surface and in lower levels will drive into
the western atlantic during the period followed by another cold
front. This will tighten the gradient considerably over the area
so that winds as low as 925 mb could reach 25 to 30 knots and will
boost the surface winds across the area. At this time sustained
winds are not expected to reach 25 mph except in local passes and
restrictions but gusts to 30 mph are quite likely Wednesday
through Thursday. Gradients will relax on Friday. Moisture from a
pre-frontal trough will continue over the area through the period
and the area around the front will also be quite moist at 850 mb.

The front is expected to move very close to the local outer waters
by Wednesday and then sag into the northeast corner as it slowly
dissipates Thursday through Friday. This will spread light to
moderate showers through the area, but especially in the atlantic
waters and on the northeast coasts and slopes of puerto rico and
in the northern u.S. Virgin islands.

At upper levels, a 60-80 knot jet will continue over the area
through the period from the west northwest wrapping around a high
centered over venezuela.

At mid levels, although moisture intrudes into the mid levels
somewhat Wednesday through Friday, generally speaking mid levels
above around 12 kft are very dry throughout the period and will
limit rainfall amounts.

Long term... Saturday through Tuesday...

flow at lower levels shifts to a more easterly direction and
moisture becomes patchy Saturday through Tuesday over the local
area. As the surface high pressure moves away into the central
atlantic the cold front that follows will stall farther away from
puerto rico and the u.S. Virgin islands. With relaxed gradients
winds will also return to normal. This will leave variably cloudy
skies with scattered showers during the period--mostly in the
eastern two thirds of puerto rico. Accumulations will be mostly
light due to the shallow nature of the good moisture and the very
dry aspect of the mid layers through the period and beyond.

Aviation... MainlyVFR conditions expected to prevail across all
terminals through the forecast period. However, trade wind showers
could briefly cause tempo MVFR CIGS across the pr usvi terminals.

Low level winds will continue e-ene at 15-25 kt and increase to 15
to 30 knots aft 23 12z. Maximum winds 65-75 knots btwn fl380-480.

Marine... Northerly swell will peak late Wednesday night and east
northeast winds will begin to subside about the same time. Seas
will become hazardous during the next several days just about
everywhere in the forecast area, from the western side of puerto
rico which will experience up to 7 foot seas to the outer atlantic
and nearshore waters of puerto rico and the north side of the
northern u.S. Virgin islands whose seas will reach up to 12 feet.

Small craft advisories are expected to be down everywhere by the
end of Saturday if not sooner. A high surf advisory will likely be
needed on Wednesday night and continue until early Friday. The
high risk of rip currents will also spread to the exposed coasts
of saint croix and vieques by Wednesday.

Preliminary point temps pops
Sju 73 83 73 83 70 70 70 40
stt 73 85 73 83 50 70 70 50

Sju watches warnings advisories
Pr... High rip current risk through Friday afternoon for north central-
northeast-northwest-san juan and vicinity-southeast-western
interior.

Small craft advisory from 2 pm Wednesday to 2 am ast Friday for
southeast.

High rip current risk from Wednesday evening through Thursday
afternoon for vieques.

High rip current risk through late Friday night for culebra.

Small craft advisory from 8 pm Wednesday to 2 pm ast Thursday
for southwest.

High rip current risk from 6 am ast Wednesday through Friday
afternoon for mayaguez and vicinity.

Vi... High rip current risk through Friday afternoon for
st.Thomas... St. John... And adjacent islands.

Small craft advisory from 2 am Wednesday to 8 am ast Saturday
for st.Thomas... St. John... And adjacent islands.

High rip current risk from Wednesday evening through Friday
afternoon for st croix.

Am... High rip current risk through Friday afternoon 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 from 2 pm Wednesday to 2 am ast Friday for
coastal waters of southern puerto rico out 10 nm.

Small craft advisory from 2 am Wednesday to 8 am ast Saturday
for atlantic waters of puerto rico and usvi from 10 nm to
19.5n-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-mona passage
southward to 17n.

Small craft advisory from 8 pm Wednesday to 2 am ast Saturday
for coastal waters of southern usvi vieques and eastern
puerto rico out 10 nm.

Small craft advisory from 8 pm Wednesday to 2 pm ast Thursday
for coastal waters of southwestern puerto rico out 10 nm.

Small craft advisory from 2 pm Wednesday to 8 am ast Saturday
for anegada passage southward to 17n.

Small craft advisory from 2 am Wednesday to 8 am ast Friday for
coastal waters of northwestern puerto rico out 10 nm.

Short term... Cam
long term... .Ws
aviation... Cam


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41053 - San Juan, PR 6 mi48 min ENE 18 G 21 79°F 1018.5 hPa
SJNP4 - 9755371 - San Juan, PR 7 mi36 min ENE 15 G 20 78°F 80°F1019.2 hPa
YABP4 - 9754228 - Yabucoa Harbor, PR 29 mi30 min 78°F 68°F
41056 31 mi48 min ENE 16 G 19 78°F 1018.1 hPa
ESPP4 - 9752695 - Esperanza, PR 37 mi36 min ENE 4.1 G 6 74°F 79°F1018.7 hPa
AROP4 - 9757809 - Arecibo, PR 38 mi30 min ENE 9.9 G 15
CLBP4 - 9752235 - Culebra, PR 38 mi30 min 76°F 80°F1019.1 hPa

Wind History for San Juan, PR
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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Tide / Current Tables for Boca De Cangrejos, Isla Verde, San Juan, Puerto Rico
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Boca De Cangrejos
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Wed -- 04:22 AM AST     -0.18 feet Low Tide
Wed -- 06:58 AM AST     Sunrise
Wed -- 09:06 AM AST     Moonset
Wed -- 11:23 AM AST     1.58 feet High Tide
Wed -- 05:49 PM AST     0.28 feet Low Tide
Wed -- 06:12 PM AST     Sunset
Wed -- 09:04 PM AST     Moonrise
Wed -- 11:09 PM AST     1.01 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.70.50.2-0-0.2-0.100.40.71.11.41.61.51.41.10.80.50.30.30.40.50.80.91

Tide / Current Tables for San Juan, La Puntilla, San Juan Bay, Puerto Rico
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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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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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (4,6,7,8)
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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.