Friday, April20, 2018 L-36.com


Marine Weather and Tides
Dana Point, CA

Version 3.4
What's New / NOTES
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.
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.

Sunrise 6:11AMSunset 7:27PM Friday April 20, 2018 11:35 AM PDT (18:35 UTC) Moonrise 10:07AMMoonset 12:00AM Illumination 29% Phase: Waxing Crescent; Moon at 5 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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PZZ750 Coastal Waters From San Mateo Point To The Mexican Border And Out To 30 Nm- 205 Am Pdt Fri Apr 20 2018
Today..Wind E to 10 kt...becoming W with gusts to 20 kt in the afternoon. Wind waves 2 ft or less...becoming 3 ft in the afternoon. SWell W 4 to 5 ft at 8 seconds.
Tonight..Wind W 10 to 15 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft at 10 seconds.
Sat..Wind W to 10 kt. Gusts to 15 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 to 3 ft at 11 seconds.
Sat night..Wind sw 10 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 3 ft at 10 seconds and S 3 ft at 16 seconds.
Sun..Wind variable less than 10 kt...becoming W 10 kt with gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 15 seconds and S 3 ft at 15 seconds.
Sun night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft.
Mon..Wind variable less than 10 kt...becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 to 3 ft.
Mon night..Wind sw 10 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft.
Tue..Wind variable less than 10 kt...becoming W 10 kt with gusts to 15 kt in the afternoon. Wind waves 2 ft or less. SWell W 1 to 2 ft.
Tue night..Wind sw 10 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 to 2 ft.
PZZ700 205 Am Pdt Fri Apr 20 2018
Synopsis for the far southern california coast.. At 2 am, a 1030 mb high was 500 nm west of san francisco and a 1006 mb low was over the great salt lake. Weaker onshore flow will continue with occasional eddy circulations today through Monday.

7 Day Forecast for Marine Location Near Dana Point city, CA
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location: 33.45, -117.68     debug


Area Discussion for - San Diego, CA
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Fxus66 ksgx 201647
afdsgx
area forecast discussion
national weather service san diego ca
947 am pdt Fri apr 20 2018

Synopsis
A low pressure system over the southwestern states will move east
with high pressure aloft and weaker onshore flow for southern
california through early next week. High temperatures for inland
areas will warm to near average this afternoon... And to 5 to 10
degrees above average for Saturday through Monday. The marine
layer and weak onshore flow will keep coastal temperatures near
average with areas of night and morning low clouds and fog. For
Tuesday through Friday... A low pressure system over the eastern
pacific will move slowly towards the west coast. This will bring
slowly increasing onshore flow and slow deepening of the marine
layer with night and morning low clouds and fog extending into
portions of the valleys. Slow cooling will spread into the valleys
with periods of gusty southwest to west winds in the mountains
and deserts.

Discussion For extreme southwestern california including orange...

san diego... Western riverside and southwestern san bernardino
counties...

Update...

a warmer day is set for today with plentiful sunshine through just
a few clouds from orange county to the san bernardinos as high
pressure aloft re-gains control. No changes are needed to the
forecast this morning. See previous discussion below for further
forecast details.

Previous discussion (issued at 301 am pdt Fri apr 20 2018)...

the low pressure system that moved through southern california
Thursday is now centered across arizona and utah and continuing to
move to the east. Onshore lower level flow and northwest flow
aloft are continuing to weaken across southern california early
this morning. Strongest gusts at whitewater in the northern
coachella valley below the san gorgonio pass are still around 50
mph... But gusts elsewhere across the mountains and deserts of san
diego and riverside counties are mostly less than 40 mph and
continuing to subside.

Aircraft soundings late Thursday evening showed the main
subsidence inversion aloft around 600 mb with multiple weaker
inversions below that. Satellite imagery shows patchy stratus
across the coastal waters into orange county... And in a few inland
valley locations near the coastal mountain slopes. Higher
resolution models show some increase in coverage this morning past
sunrise across the inner coastal waters and adjacent coastal areas
of orange and san diego counties with patchier coverage farther
inland to the lower coastal mountain slopes.

High temperatures will warm today... Returning to near average. For
Saturday through Monday... High pressure aloft and weaker onshore
flow will bring additional warming with high temperatures for
inland areas 5 to 10 degrees above average. For coastal
areas... Weak onshore flow and the marine layer will keep high
temperatures near average with areas of night and morning low
clouds and fog.

For Tuesday through Friday... A low pressure system over the
eastern pacific will move slowly towards the west coast with
slowly strengthening onshore flow. Slow cooling will spread into
the valleys as the marine layer slowly deepens with night and
morning coastal low clouds and fog extending into portions of the
valleys. The stronger onshore flow will bring periods of gusty
southwest to west winds in the mountains and deserts.

Aviation
201630z... Coast valleys... Few-sct low clouds with bases mostly abv
3000 ft msl through this afternoon. Patchy low clouds return to the
coastal areas after 02z sat, increasing in coverage after 07z with
bases around 1000 ft msl. Confidence in impacts at coastal TAF sites
is low.

Marine
No hazardous marine weather is expected through Tuesday.

Skywarn
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.

Sgx watches warnings advisories
Ca... None.

Pz... None.

Public... Gregoria (update) 17 (prev discussion)
aviation marine... Pg


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46242 - Camp Pendleton Nearshore, CA (043) 20 mi67 min 59°F3 ft
46224 - Oceanside Offshore, CA (045) 22 mi35 min 58°F4 ft
46253 28 mi35 min 56°F3 ft
PRJC1 33 mi47 min E 6 G 7
46256 33 mi35 min 56°F4 ft
PFXC1 35 mi47 min NE 5.1 G 8 64°F
AGXC1 35 mi47 min NE 8 G 8 57°F 1019.9 hPa
PSXC1 36 mi47 min NE 2.9 G 9.9
46222 - San Pedro, CA (092) 36 mi35 min 55°F5 ft
PFDC1 36 mi47 min NNE 6 G 6
OHBC1 - 9410660 - Los Angeles, CA 37 mi47 min 57°F1019.8 hPa
BAXC1 37 mi53 min Calm G 0
PXAC1 38 mi47 min N 2.9 G 4.1
46225 - Torrey Pines Outer, CA (100) 39 mi74 min 59°F4 ft
46254 46 mi65 min 60°F4 ft
LJPC1 - La Jolla, CA (073) 46 mi75 min WNW 7 4 ft
LJAC1 - 9410230 - La Jolla, CA 46 mi53 min W 8 G 9.9 58°F 1019.3 hPa
46258 49 mi35 min 62°F4 ft

Wind History for Los Angeles Pier J, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mcolf Camp Pendleton (Red Beach), CA17 mi1.7 hrsNNE 7 G 1410.00 miFair66°F45°F47%1028.1 hPa
John Wayne-Orange County Airport, CA19 mi42 minVar 310.00 miFair63°F46°F54%1019.7 hPa
Oceanside, Camp Pendleton, Marine Corps Air Station, CA20 mi40 minNE 610.00 miFair68°F43°F40%1018.8 hPa
Oceanside, Oceanside Municipal Airport, CA24 mi43 minENE 910.00 miFair69°F42°F38%1018.7 hPa

Wind History from SNA (wind in knots)
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Last 24hrS116SW8
G18
SW8SW9
G17
SW7SW7W75S6S5SE4S7SE6SE6SE8SE7E5E6E5E6443
1 day agoSW11SW12SW10S10S10SW7SW8
G15
SW74SW63SW4SW6SW7W3SW3S3W3CalmCalm4SE65SW12
2 days agoSW9SW8W8
G15
SW8SW8SW9SW7SW5NW4NW3CalmCalmCalmSW5CalmCalmNE4CalmN3E4CalmS10SW10S10

Tide / Current Tables for San Clemente, California
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San Clemente
Click for Map
Fri -- 12:08 AM PDT     5.33 feet High Tide
Fri -- 06:14 AM PDT     Sunrise
Fri -- 07:33 AM PDT     -0.41 feet Low Tide
Fri -- 10:06 AM PDT     Moonrise
Fri -- 02:11 PM PDT     3.21 feet High Tide
Fri -- 06:46 PM PDT     2.12 feet Low Tide
Fri -- 07:24 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.35.14.53.52.21.10.2-0.3-0.40.10.81.72.433.23.12.82.52.22.12.32.83.54.2

Tide / Current Tables for Newport Beach, Newport Bay Entrance, Corona del Mar, California (sub)
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Newport Beach
Click for Map
Fri -- 12:11 AM PDT     5.39 feet High Tide
Fri -- 06:14 AM PDT     Sunrise
Fri -- 07:36 AM PDT     -0.31 feet Low Tide
Fri -- 10:07 AM PDT     Moonrise
Fri -- 02:26 PM PDT     3.21 feet High Tide
Fri -- 06:43 PM PDT     2.32 feet Low Tide
Fri -- 07:26 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.45.24.63.62.41.20.3-0.2-0.30.10.81.62.42.93.23.22.92.62.42.32.533.64.3

Weather Map and Satellite Images
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wmap_P
GOES Local Image of Southwest    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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Diego, CA (14,3,4,5)
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Ground Weather Radar Station Santa Ana Mtns, CA
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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.