Sunday, June24, 2018 L-36.com


Marine Weather and Tides
Luis M. Cintr�n, PR

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:47AMSunset 7:03PM Sunday June 24, 2018 1:07 AM AST (05:07 UTC) Moonrise 4:09PMMoonset 3:07AM Illumination 82% Phase: Waxing Gibbous; Moon at 11 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- 932 Pm Ast Sat Jun 23 2018
.small craft advisory in effect from late Sunday night through Monday afternoon...
Rest of tonight..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Scattered showers.
Sunday..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Scattered showers.
Sunday night..East winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 7 seconds. Isolated showers.
Monday..East winds 15 to 20 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 7 seconds. Isolated showers.
Monday night..East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 7 seconds. Isolated showers.
Tuesday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Wednesday..East winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 7 seconds. Isolated showers.
Thursday..East winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
AMZ700 932 Pm Ast Sat Jun 23 2018
Synopsis for puerto rico and the uS. Virgin islands waters... Surface high pressure moving across the west-central atlantic will tighten the local pressure gradient and increase the local winds. This will create moderate to fresh east to southeast winds across the local waters, resulting in hazardous seas starting Sunday and lasting through early Tuesday morning.

7 Day Forecast for Marine Location Near Luis M. Cintrn, PR
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location: 18.32, -65.64     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 240211
afdsju
area forecast discussion
national weather service san juan pr
1011 pm ast Sat jun 23 2018

Update No change to previous discussion. Forecast on track.

Aviation Vfr conds expected to continue overnight with easterly
winds at 10 mph or less.

Marine Seas will continue to deteriorate as winds and seas
increases.

Prev discussion issued 701 pm ast Sat jun 23 2018
synopsis... Tropical wave and tutt low will continue to move away
from the region, ending the threat of organized and widespread
convection across the forecast area. A more stable and drier weather
pattern is expected tomorrow and continuing through next week
with saharan dust expected.

Short term... Tonight through Monday...

a very active morning was observed across the forecast area with
widespread showers and thunderstorms across most of puerto rico
and portions of the usvi. Average rainfall accumulations between
1-3 inches were common across the eastern and southern half of
puerto rico.

Improving weather conditions are expected the rest of the day as
the tropical wave and its associated moisture field continues to
move away and the tutt low, which has provided the upper-level
support, continues to retrograde towards the western atlantic.

Therefore, only some isolated passing showers are expected across
eastern portions of puerto rico and the usvi during the overnight
and morning hours.

A much less active day is expected on Sunday, however, there will
still be sufficient low-level moisture in place to result in
periods of passing showers across portions of eastern pr and the
usvi during the morning hours followed by locally and diurnally
induced showers and isolated thunderstorms across the northwest
quadrant of puerto rico during the afternoon. Some streamers may
also develop downwind from EL yunque, affecting the san juan
metro area, and downwind from the usvi as the low-level flow
increases due to surface high pressure moving across the west-
central atlantic and tightening the pressure gradient.

An extensive area of saharan dust is expected to move over the
forecast area starting on Monday, therefore, expect hazy skies
with very limited shower activity across the forecast area.

Long term... Tuesday through Sunday (from previous discussion)...

although an upper level trough across the central atlantic is
expected to amplify into the north central and northeast caribbean
through the forecast cycle; moisture will remain below the normal
range which will be the limiting factor for shower and thunder
development the upcoming week. At lower levels, a tropical wave
passage is expected late in the week with bulk of moisture remaining
south of the area. A surface high pressure across the central
atlantic will yield fresh easterly winds much of the forecast
period.

If the long term forecast holds, expect a fair weather pattern
across the local islands with locally induced afternoon showers
and thunderstorms across western areas of puerto rico each day.

Under easterly winds, temperatures should remain near normal
values.

Aviation... Rain is dissipating over pr, but some tsra are
present in the vicinity of tist. Mtn obscurations. Conds briefly
MVFR for vsby CIGS and tsra still psbl til 23 22z since clds are
thinning. Conds impvg til arnd 24 04z when new area of moisture
moves in from se. Areas of MVFR psbl in ra aft 24 04z exc aft
23 23z in the leeward islands. Sfc winds variable less than 10
knots across pr usvi but ese in leeward islands. Winds becoming
ese in pr usvi aft 24 02z.

Marine... Lingering moisture from a departing tropical wave will continue to
result in scattered showers and isolated thunderstorms across the
local waters through tonight. A high pressure system in the central
atlantic will move into the west-central atlantic, tightening the
local pressure gradient and increasing the winds. This will result
in hazardous seas across the caribbean waters, local passages,
and offshore atlantic waters starting early Sunday morning, with
seas between 5 to 8 feet expected.

Preliminary point temps pops
Sju 77 89 78 89 40 40 20 20
stt 79 88 79 88 40 40 20 20

Sju watches warnings advisories
Pr... High rip current risk from 6 am ast Sunday through Monday
afternoon for central interior-northeast-southeast.

Small craft advisory from 8 am Sunday to 2 am ast Tuesday for
southeast.

Vi... High rip current risk from 6 am ast Sunday through Monday
afternoon for st croix.

Small craft advisory from 2 am to 2 pm ast Monday for
st.Thomas... St. John... And adjacent islands.

Am... High rip current risk from 6 am ast Sunday through Monday
afternoon for coastal waters of southern puerto rico out 10
nm.

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

Small craft advisory from 8 am Sunday to 2 am ast Tuesday for
coastal waters of southern puerto rico out 10 nm.

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

Small craft advisory from 2 am Sunday to 8 am ast Tuesday for
caribbean waters of puerto rico from 10 nm to 17n.

Small craft advisory from 8 am Sunday to 8 am ast Tuesday for
mona passage southward to 17n.

Small craft advisory from 2 pm Sunday to 8 pm ast Monday for
atlantic waters of puerto rico and usvi from 10 nm to 19.5n.

Short term... 99
long term... .99


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
41056 10 mi68 min E 14 G 19 82°F 82°F3 ft1017.2 hPa (+0.0)
CLBP4 - 9752235 - Culebra, PR 18 mi56 min 78°F 83°F1018 hPa
YABP4 - 9754228 - Yabucoa Harbor, PR 21 mi50 min 77°F
41053 - San Juan, PR 27 mi68 min ESE 7.8 G 9.7 80°F 82°F2 ft1017.4 hPa (+0.0)
SJNP4 - 9755371 - San Juan, PR 27 mi56 min 78°F 82°F1018.2 hPa
JOXP4 - Jobos Bay Reserve, Puerto Rico 40 mi83 min NE 2.9 77°F 1018 hPa72°F
LAMV3 49 mi50 min 81°F 82°F

Wind History for Fajardo, PR
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24hr
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Airport Reports
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Tide / Current Tables for Playa de Fajardo, Puerto Rico
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Playa de Fajardo
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Sun -- 12:27 AM AST     0.43 feet Low Tide
Sun -- 03:07 AM AST     Moonset
Sun -- 05:26 AM AST     0.94 feet High Tide
Sun -- 05:48 AM AST     Sunrise
Sun -- 11:43 AM AST     -0.13 feet Low Tide
Sun -- 04:09 PM AST     Moonrise
Sun -- 06:58 PM AST     1.56 feet High Tide
Sun -- 07:01 PM AST     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.40.50.70.80.90.90.80.60.30.1-0.1-0.1-00.20.60.91.31.51.61.51.310.7

Tide / Current Tables for Vieques Passage, Puerto Rico Current
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Vieques Passage
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Sun -- 02:27 AM AST     -0.80 knots Max Ebb
Sun -- 03:07 AM AST     Moonset
Sun -- 05:48 AM AST     Sunrise
Sun -- 06:18 AM AST     0.00 knots Slack
Sun -- 08:38 AM AST     0.34 knots Max Flood
Sun -- 11:07 AM AST     -0.00 knots Slack
Sun -- 02:05 PM AST     -0.45 knots Max Ebb
Sun -- 04:08 PM AST     Moonrise
Sun -- 04:45 PM AST     0.00 knots Slack
Sun -- 07:01 PM AST     Sunset
Sun -- 08:26 PM AST     0.80 knots Max Flood
Sun -- 11:48 PM AST     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.3-0.6-0.8-0.8-0.6-0.4-0.10.20.30.30.20-0.2-0.4-0.4-0.4-0.20.10.40.60.80.80.60.3

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 (1,6,7,8)
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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.