Friday, September22, 2017 L-36.com


Marine Weather and Tides
Cata�o, PR

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 6:12AMSunset 6:21PM Friday September 22, 2017 8:11 PM AST (00:11 UTC) Moonrise 8:14AMMoonset 8:16PM Illumination 6% Phase: Waxing Crescent; Moon at 2 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- 353 Pm Ast Fri Sep 22 2017
.small craft should exercise caution...
Tonight..Southeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 10 seconds. Northeast swell 4 to 5 feet. Scattered Thunderstorms.
Saturday..Southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Northwest swell around 4 feet.
Saturday night..Southeast winds 5 to 10 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Northwest swell around 4 feet. Widespread Thunderstorms through the night.
Sunday..Southeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. Northwest swell 4 to 5 feet. Numerous Thunderstorms through the day.
Sunday night..Southeast winds 5 to 10 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 12 seconds. Northwest swell 4 to 5 feet. Scattered Thunderstorms through the night.
Monday..Southeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 12 seconds. Northwest swell 4 to 5 feet. Numerous Thunderstorms.
Tuesday..East winds 5 to 10 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 12 seconds. Northwest swell 4 to 5 feet. Scattered Thunderstorms.
Wednesday..East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 12 seconds. Northwest swell 4 to 5 feet. Isolated Thunderstorms.
AMZ700 353 Pm Ast Fri Sep 22 2017
Synopsis for puerto rico and the uS. Virgin islands waters... Small craft advisory conditions exist in the atlantic waters to the north of puerto rico and gradually improve from northwest to southeast. Small craft should exercise caution in much of the remaining marine zones. Otherwise, showers and scattered Thunderstorms with heavy rain and locally higher wind gusts and waves are possible through this weekend.

7 Day Forecast for Marine Location Near Cata?o, PR
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location: 18.46, -66.12     debug


Area Discussion for - San Juan, PR
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Fxca62 tjsj 221814
afdsju
area forecast discussion
national weather service san juan pr
issued by national weather service miami fl
214 pm ast Fri sep 22 2017

Short term
Deep tropical moisture coupled with a south to southeast flow will
keep precipitable water values well over 2 inches through the
weekend. This will allow for any showers and thunderstorms that do
develop to have the potential for heavy rainfall.

Any additional rainfall that puerto rico receives will continue to
aggravate the ongoing flooding on many of the rivers. Also, there
is standing water away from the rivers, in many locations, as
well. Mudslides have occurred across the island and will likely
continue if additional rainfall is received. Thus, in coordination
with the office in san juan, we will keep the flash flood watch
up across all of puerto rico through 8 am. But, the flash flood
watch outside of puerto rico will be allowed to expire.

Reiterating, it is difficult to ascertain conditions in the area
as nearly all communications links are down. However, some gauges
continue to report. Some river and stream levels are slowly
falling but still remain in flood.

Heat index values will begin to rise at or above 100 for the
weekend. This will make recovery efforts difficult and overall
living unpleasant as electricity remains out across the island.

Long term
The pattern will change Tuesday into Tuesday night. Flow will
become easterly and precipitable water values will drop to around
1.75 inches. This will bring relatively drier conditions to the
forecast area.

Aviation
South to southeast flow will continue to favor showers and scattered
thunderstorms today over puerto rico along with considerable mid to
high level clouds. Highest chance for rain will be in the high
terrain and upslope regime over southern puerto rico. The us virgin
islands is experiencing a drier airmass with conditions improving.

Marine
Small craft advisory will remain in effect over the coastal waters
to the northwest of puerto rico because seas will be around 7 feet
in this area. Elsewhere, small craft exercise caution will be
headlined as conditions have improved to below SCA criteria. Showers
and thunderstorms with heavy rain, locally higher winds and
waves, and reduced visibilities will be possible the rest of today
through the weekend.

Preliminary point temps pops
Sju 82 85 82 87 20 20 50 50
stt 83 83 83 83 20 20 60 50

Sju watches warnings advisories
Pr... Flash flood watch through Saturday morning for central interior-
eastern interior-mayaguez and vicinity-north central-
northeast-northwest-ponce and vicinity-san juan and
vicinity-southeast-southwest-western interior.

Vi... None.

Am... Flash flood watch through Saturday morning for coastal waters of
southwestern puerto rico out 10 nm-coastal waters of
southern puerto rico out 10 nm.

Small craft advisory until 8 am ast Saturday for atlantic waters
of puerto rico and usvi from 10 nm to 19.5n.

Short term... Md
marine... ... .Md
aviation... ..Lak


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SJNP4 - 9755371 - San Juan, PR 0 mi42 min 83°F 81°F1010.5 hPa
41053 - San Juan, PR 1 mi42 min SE 5.8 G 9.7 84°F 1009.8 hPa
AROP4 - 9757809 - Arecibo, PR 31 mi42 min SSW 1.9 G 2.9
YABP4 - 9754228 - Yabucoa Harbor, PR 32 mi42 min 85°F
41056 38 mi72 min SE 12 G 14 83°F 1010.4 hPa (+0.0)
CLBP4 - 9752235 - Culebra, PR 45 mi42 min 82°F 83°F1010.9 hPa
42085 - Southeast of Ponce, PR 47 mi72 min ESE 12 G 16 85°F 83°F1009.4 hPa (+0.5)

Wind History for San Juan, PR
(wind in knots)    EDIT      (on/off)   Help
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NE13
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Airport Reports
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Tide / Current Tables for San Juan, La Puntilla, San Juan Bay, Puerto Rico
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San Juan
Click for Map
Fri -- 04:05 AM AST     0.35 feet Low Tide
Fri -- 06:13 AM AST     Sunrise
Fri -- 08:14 AM AST     Moonrise
Fri -- 10:32 AM AST     1.75 feet High Tide
Fri -- 04:52 PM AST     0.47 feet Low Tide
Fri -- 06:20 PM AST     Sunset
Fri -- 08:16 PM AST     Moonset
Fri -- 10:38 PM AST     1.42 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.310.70.40.40.40.60.91.31.61.71.71.61.310.70.50.50.60.811.21.41.4

Tide / Current Tables for Boca De Cangrejos, Isla Verde, San Juan, Puerto Rico
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Boca De Cangrejos
Click for Map
Fri -- 04:24 AM AST     0.07 feet Low Tide
Fri -- 06:12 AM AST     Sunrise
Fri -- 08:13 AM AST     Moonrise
Fri -- 10:51 AM AST     1.35 feet High Tide
Fri -- 05:08 PM AST     0.20 feet Low Tide
Fri -- 06:19 PM AST     Sunset
Fri -- 08:16 PM AST     Moonset
Fri -- 10:55 PM AST     1.09 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.70.40.20.10.10.30.50.81.11.31.41.310.80.50.30.20.20.40.60.911.1

Weather Map and Satellite Images
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Weather Map
wmap_A
IR Satellite Image from GEOS
carb_satellite

GOES Local Image of Puerto Rico    EDIT
Geos

Wind Forecast for (20,4,5,8)
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Ground Weather Radar Station Puerto Rico,Virgin Islands
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weather_mapweather_map weather_map

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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.