Monday, August21, 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 6:18AMSunset 7:34PM Sunday August 20, 2017 9:24 PM PDT (04:24 UTC) Moonrise 5:05AMMoonset 7:01PM Illumination 1% Phase: Waning Crescent; Moon at 29 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- 821 Pm Pdt Sun Aug 20 2017
Tonight..SW winds 5 to 10 kt through late 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. Patchy fog after midnight.
Mon..Winds variable 10 kt or less...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 10 seconds and S 2 ft at 13 seconds. Patchy fog in the morning.
Mon night..W winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 ft at 10 seconds and S 2 ft at 12 seconds.
Tue..NW winds 5 to 10 kt...becoming W 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 ft at 9 seconds and S 2 ft at 12 seconds.
Tue night..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 9 seconds and S 2 ft at 12 seconds.
Wed..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 and S 3 ft.
Wed night..W winds 10 to 15 kt...becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 ft and S 2 ft.
Thu..SW winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft. Patchy fog.
Fri..SW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 3 ft. Patchy fog.
PZZ600 821 Pm Pdt Sun Aug 20 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 1027 mb surface high was centered about 800 nm W of san francisco...and a 1008 mb low was near las vegas.

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 210320
afdlox
area forecast discussion
national weather service los angeles oxnard ca
820 pm pdt Sun aug 20 2017

Synopsis
Possible afternoon and evening showers and thunderstorms into
Monday for the mountains of ventura and santa barbara. A low will
bring local drizzle into Monday morning, with overnight low clouds
and fog into next week. The temperatures will be near normal into
Thursday, then a warmup on Friday and the weekend as a high moves
in.

Short term (tonight-wed)
weak upper level low pressure system centered off the coast of
point conception will move very little through Wednesday,
though it will weaken and fill slightly Tue into wed. There were
some afternoon cumulus buildups over the mountains of santa
barbara and ventura counties that produced a couple of showers,
but no thunderstorms this afternoon. Otherwise satellite imagery
showing a solid bank of low clouds for the central coast this
evening, with some low clouds beginning to fill in across coastal
areas south of point conception. With the upper level low pressure
system off the coast and fairly strong onshore flow in place,
looking for marine layer clouds to fill in across most coastal
and valley areas tonight into Monday morning, with possibly
some patchy drizzle in the foothill areas. By 10 am tomorrow
for the eclipse, low clouds are expected to have burned off
across interior sections, but some coastal areas will likely
have lingering cloud coverage.

The upper level low pressure system is expected to bring some
drier air aloft from the east into our forecast area on Monday,
with precipitable water values continuing to trend downward,
especially los angeles and ventura counties. However, still some
residual moisture and instability to warrant a slight chance of
tstms for the sba county mountains and adjacent cuyama valley on
Monday afternoon. But mostly just expecting some afternoon cumulus
buildups across the local mountains.

*** from previous discussion ***
with the upper low weakening Tue and Wed expect temps to start
climbing, especially inland, with less overnight marine lyr
coverage and earlier clearing times.

Long term (thu-sun)
inland warming trend expected to continue into next weekend as
high pressure returns and onshore gradients weaken. Could see
warmer valley highs reaching triple digits by the weekend,
especially Sunday with weak offshore flow possible in the morning.

Coastal areas also expected to see some warm up by Sunday. Today's
model runs didn't suggest any return of monsoon moisture through
early next week, though this could change as the door is open for
some should a source develop.

Aviation 20 2345z
at 0930z at klax, the marine layer depth was near 2400 feet. The
top of the inversion was 3100 feet with a temperature of 19
degrees celsius.

Low clouds lingering this afternoon across much of the central
coast and will advance inland quickly this evening, reaching kprb
overnight. South of point conception, low clouds have generally
cleared well off the coast, except a few patches across la ventura
coastal areas. Less confidence in arrival of low clouds tonight
for TAF locations south of point conception, but have trended
back arrival times based on latest satellite and model trends.

Klax... Have delayed onset of MVFR CIGS at klax in latest taf
based on latest satellite model trends. However, there is fairly
low confidence in arrival time, and could see + - 3 hours from
07z indicated in taf.

Kbur... Have delayed onset of MVFR CIGS at kbur in latest taf
based on latest satellite model trends. However, there is fairly
low confidence in arrival time, and could see + - 2 hours from
12z indicated in taf. Thee is a 20 percent chance that CIGS could
lower to ifr category.

Marine 20 800 pm
outer waters... High confidence in forecast. Winds and seas will
remain below small craft advisory (sca) levels through Tuesday. On
Wednesday through Friday, SCA level winds are likely. Gale force
gusts will be possible over the northern portion Thursday
afternoon and evening.

Inner waters... High confidence in forecast. For the waters north
of point sal, winds and seas will remain below SCA levels through
Tuesday. On Wednesday and Thursday, SCA level winds are likely
each afternoon and evening. For the waters south of point
conception, winds and seas are expected to remain below SCA levels
through Thursday.

Lox watches warnings advisories
Ca... Beach hazards statement in effect until midnight pdt tonight
for zones 40-41. (see laxcfwlox).

Pz... None.

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

Public... Gomberg mw
aviation... Gomberg
marine... Rorke smith
synopsis... 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 mi55 min WSW 6 G 8 67°F 71°F1013.5 hPa
46221 - Santa Monica Bay, CA (028) 11 mi55 min 71°F3 ft
BAXC1 14 mi55 min NNW 4.1 G 4.1
PSXC1 15 mi55 min W 4.1 G 5.1
PFXC1 16 mi55 min WSW 6 G 8 68°F
OHBC1 - 9410660 - Los Angeles, CA 16 mi55 min 65°F1013.3 hPa
AGXC1 17 mi55 min WSW 9.9 G 12 67°F 1013.3 hPa
PRJC1 18 mi55 min WSW 9.9 G 11
46256 19 mi63 min 71°F2 ft
46222 - San Pedro, CA (092) 21 mi55 min 69°F2 ft
46253 27 mi55 min 69°F2 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 35 mi45 min W 3.9 G 5.8 70°F1012.8 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 mi32 minWSW 910.00 miPartly Cloudy67°F61°F81%1013.4 hPa
Hawthorne, Hawthorne Municipal Airport, CA5 mi32 minSW 510.00 miFair68°F60°F76%1013.6 hPa
Santa Monica, Santa Monica Municipal Airport, CA8 mi34 minWSW 610.00 miPartly Cloudy67°F61°F81%1013.4 hPa
Torrance, Zamperini Field Airport, CA9 mi98 minWNW 810.00 miPartly Cloudy64°F59°F83%1012.9 hPa
Los Angeles / USC Campus Downtown, CA11 mi38 minW 310.00 miA Few Clouds69°F61°F76%1013.2 hPa
Long Beach, Long Beach Airport, CA16 mi32 minNW 710.00 miPartly Cloudy69°F61°F76%1013.4 hPa
Burbank - Bob Hope Airport, CA20 mi32 minSSE 810.00 miFair67°F57°F73%1012.3 hPa
Van Nuys, Van Nuys Airport, CA21 mi34 minSE 710.00 miFair66°F60°F81%1012.7 hPa
Los Alamitos Army Airfield, CA22 mi87 minS 410.00 miFair68°F60°F77%1013.1 hPa
Los Angeles, Whiteman Airport, CA24 mi90 minE 510.00 miClear68°F59°F73%1014.2 hPa
Fullerton, Fullerton Municipal Airport, CA24 mi32 minS 610.00 miOvercast69°F62°F78%1013.1 hPa

Wind History from LAX (wind in knots)
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Last 24hrW8W7W6W5SW6W3SW4W6SW3CalmSW3SW43W8W10W12W13W13W14SW14W13W12W9W9
1 day agoW8W8W7W5W5W3W3W3W3SW4SW5SW6SW4SW8W11SW10W13W12W13W12W12
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2 days agoW9W8W8W6W5S5SW53S5S5W4W4W7W8W9W14W12W15W13
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Tide / Current Tables for El Segundo, Santa Monica Bay, California
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El Segundo
Click for Map
Mon -- 04:02 AM PDT     -0.90 feet Low Tide
Mon -- 06:10 AM PDT     Moonrise
Mon -- 06:19 AM PDT     Sunrise
Mon -- 10:22 AM PDT     4.79 feet High Tide
Mon -- 11:31 AM PDT     New Moon
Mon -- 03:47 PM PDT     1.18 feet Low Tide
Mon -- 07:32 PM PDT     Sunset
Mon -- 07:44 PM PDT     Moonset
Mon -- 09:54 PM PDT     6.36 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.82.20.6-0.5-0.9-0.60.41.73.14.24.74.743.12.11.41.21.62.63.95.26.16.45.9

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Mon -- 03:53 AM PDT     -0.88 feet Low Tide
Mon -- 06:10 AM PDT     Moonrise
Mon -- 06:20 AM PDT     Sunrise
Mon -- 10:12 AM PDT     4.90 feet High Tide
Mon -- 11:31 AM PDT     New Moon
Mon -- 03:36 PM PDT     1.28 feet Low Tide
Mon -- 07:33 PM PDT     Sunset
Mon -- 07:44 PM PDT     Moonset
Mon -- 09:44 PM PDT     6.57 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.720.4-0.6-0.9-0.40.623.44.44.94.74321.41.31.92.94.35.56.46.56

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 (0,6,7,8)
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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.