Friday, August18, 2017 L-36.com


Marine Weather and Tides
El Segundo, CA

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 6:16AMSunset 7:38PM Thursday August 17, 2017 11:44 PM PDT (06:44 UTC) Moonrise 1:59AMMoonset 4:19PM Illumination 17% Phase: Waning Crescent; Moon at 26 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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PZZ655 Inner Waters From Point Mugu To San Mateo Pt. Ca Including Santa Catalina And Anacapa Islands- 822 Pm Pdt Thu Aug 17 2017
Tonight..W winds 10 to 15 kt...becoming 5 to 10 kt after midnight. Wind waves 1 to 3 ft becoming 2 ft or less. Mixed swell W 2 ft at 11 seconds and S 2 ft at 15 seconds. Patchy fog after midnight.
Fri..Winds variable 10 kt or less...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 11 seconds and S 3 ft at 16 seconds. Patchy fog in the morning.
Fri night..W winds 10 to 15 kt in the evening...becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 ft at 12 seconds and S 3 ft at 15 seconds. Patchy fog after midnight.
Sat..Winds variable 10 kt or less...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 11 seconds and S 3 ft at 15 seconds. Patchy fog in the morning.
Sat night..W winds 10 to 15 kt in the evening...becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 ft at 11 seconds and S 3 ft at 14 seconds.
Sun..Winds variable 10 kt or less...becoming sw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 11 seconds and S 3 ft at 14 seconds.
Sun night..SW winds 10 kt in the evening...becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 ft at 10 seconds and S 3 ft at 13 seconds.
Mon..SW winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and S 2 ft.
Tue..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and S 2 ft.
PZZ600 822 Pm Pdt Thu Aug 17 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 03z...or 8 pm pdt...a 1024 mb surface high was about 500 nm west of eureka...while a 1008 mb low was near yuma, arizona. Light to moderate W to nw winds will continue across the coastal waters through the weekend.

7 Day Forecast for Marine Location Near El Segundo, CA
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location: 33.91, -118.43     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 180606
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
1106 pm pdt Thu aug 17 2017

Synopsis
Night through morning low clouds and fog will occur at the
coast and some valleys through Saturday as a weak low pressure
over the area remains in place. The low pressure should deepen
early next week and deepen the marine layer and spread low clouds
and fog farther inland. The low will weaken by midweek for a
temperature warmup into Friday.

Short term (thu-sun)

Update As a weak trough of low pressure is replaced by high
pressure aloft, a stronger inversion is expected near the surface
resulting in better marine layer cloud coverage overnight. A
fairly extensive low cloud layer is expected to push inland later
tonight, covering coastal areas and even some of the coastal
valleys by early Friday morning. Weak offshore trends should bring
similar to slightly higher daytime highs to the area on Friday
for inland areas. Coastal locations are likely to cool by a degree
or two due to the morning cloud coverage and delayed warming.

Little change is expected on Saturday with highs near-normal for
coastal areas and slightly below normal inland.

From previous discussion A trough along the west coast will
deepen Sunday, leading to a deeper marine lyr and a cooling trend.

Could even see some patchy drizzle during the morning hours. The
presence of the upper low aloft and a little bit of mid level
moisture should generate some afternoon clouds over the mountains
but at this time there doesn't appear to be enough moisture to go
with any thunderstorms.

Long term (mon-thu)
the trough will deepen further Monday then weaken tue-thu with
some height thickness rises. Forecast temps Monday still seem a
bit warm given the upper pattern and likely a fairly deep marine
lyr. Then slight warming through mid week but temps still a couple
degrees below normal.

Aviation 18 0600z.

At 06z, the marine layer depth was around 1000 ft deep at klax.

The top of the marine inversion was around 2000 ft with a
temperature near 23 degrees celsius. There was another inversion
up to around 5800 ft.

Low confidence in the current forecast. Through 17z, there is a
chance of lifr to ifr conditions north of point conception and
ifr to MVFR conditions south of point conception.

Klax... There is a 60 percent chance of ifr to MVFR conditions
developing as soon as 08z, or as late as 13z.VFR conditions
should redevelop between 16z and 17z.

Kbur... There is a 30 percent chance of ifr conditions developing
between 13z and 16z.

Marine 17 800 pm.

Moderate to high confidence in the forecast. Winds should remain
below small craft advisory levels through early next week. There
is a 40 percent chance of small craft advisory conditions
developing Friday afternoon and evening across the outer waters
between point conception and san miguel island. There is a 10 to 20
percent chance of small craft advisory conditions across the
western santa barbara and san pedro channels each afternoon and
evening through the weekend.

Lox watches warnings advisories
Ca... None.

Pz... None.

Hazard potential outlook (sun-thu)
no significant hazards expected.

Public... Mw
aviation... Hall
marine... Smith
synopsis... Hall stu
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 8 mi45 min SW 6 G 7 66°F 72°F1015.9 hPa (+0.8)
46221 - Santa Monica Bay, CA (028) 11 mi45 min 67°F3 ft
BAXC1 14 mi45 min NNW 4.1 G 4.1
PSXC1 15 mi45 min NW 1.9 G 2.9
PFXC1 16 mi45 min NW 2.9 G 2.9 68°F
OHBC1 - 9410660 - Los Angeles, CA 16 mi45 min 69°F1015.6 hPa (+0.7)
AGXC1 17 mi45 min WSW 6 G 7 67°F 1015.5 hPa (+0.7)
PRJC1 18 mi45 min WSW 4.1 G 4.1
46256 19 mi53 min 70°F4 ft
46222 - San Pedro, CA (092) 21 mi45 min 70°F3 ft
46253 27 mi45 min 70°F3 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 35 mi35 min NW 9.7 G 9.7 70°F1015.6 hPa

Wind History for Santa Monica, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Los Angeles, Los Angeles International Airport, CA3 mi52 minW 810.00 miA Few Clouds67°F61°F81%1015.4 hPa
Hawthorne, Hawthorne Municipal Airport, CA5 mi52 minWSW 710.00 miFair67°F62°F84%1015.6 hPa
Santa Monica, Santa Monica Municipal Airport, CA8 mi54 minWSW 410.00 miFair66°F62°F87%1015.6 hPa
Torrance, Zamperini Field Airport, CA9 mi4 hrsno data10.00 miPartly Cloudy66°F60°F83%1014.6 hPa
Los Angeles / USC Campus Downtown, CA11 mi58 minVar 410.00 miFair68°F61°F78%1015.3 hPa
Long Beach, Long Beach Airport, CA16 mi52 minWNW 410.00 miFair67°F62°F84%1015.5 hPa
Burbank - Bob Hope Airport, CA20 mi52 minSSE 510.00 miFair69°F59°F70%1014.3 hPa
Van Nuys, Van Nuys Airport, CA21 mi54 minSE 410.00 miFair70°F55°F61%1015.6 hPa
Los Alamitos Army Airfield, CA22 mi47 minNW 510.00 miFair66°F60°F83%1015.8 hPa
Fullerton, Fullerton Municipal Airport, CA24 mi52 minNW 310.00 miFair69°F63°F81%1015.1 hPa

Wind History from LAX (wind in knots)
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Last 24hrSW7S5S4SW4S3CalmCalm3CalmSW6W6W9W9W9
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1 day agoW6SW5SW4W4W4CalmS5SE84E4CalmW9W10W14W13W13W13W13W12W11W11W8W9SW7
2 days agoS4SE5SW8W6S3S4W5W6W4CalmW5SW10SW10W11W11W12
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Tide / Current Tables for El Segundo, Santa Monica Bay, California
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El Segundo
Click for Map
Fri -- 01:57 AM PDT     -0.38 feet Low Tide
Fri -- 02:57 AM PDT     Moonrise
Fri -- 06:17 AM PDT     Sunrise
Fri -- 08:26 AM PDT     3.99 feet High Tide
Fri -- 01:20 PM PDT     1.95 feet Low Tide
Fri -- 05:18 PM PDT     Moonset
Fri -- 07:35 PM PDT     6.23 feet High Tide
Fri -- 07:36 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.7-0.1-0.4-0.10.71.72.73.53.93.93.52.92.3222.63.54.55.56.16.25.64.53

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Fri -- 01:48 AM PDT     -0.37 feet Low Tide
Fri -- 02:57 AM PDT     Moonrise
Fri -- 06:17 AM PDT     Sunrise
Fri -- 08:15 AM PDT     4.09 feet High Tide
Fri -- 01:08 PM PDT     2.04 feet Low Tide
Fri -- 05:19 PM PDT     Moonset
Fri -- 07:24 PM PDT     6.47 feet High Tide
Fri -- 07:36 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.6-0.2-0.400.91.933.74.143.52.92.322.22.83.84.95.96.46.45.74.42.9

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of Southwest    EDIT
Geos

Wind Forecast for Los Angeles/Oxnard, CA (2,6,7,8)
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Ground Weather Radar Station Santa Ana Mtns, CA
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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.