Tuesday, August20, 2019 L-36.com


Marine Weather and Tides
El Segundo, CA

Version 3.4
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7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:17AMSunset 7:36PM Tuesday August 20, 2019 9:28 AM PDT (16:28 UTC) Moonrise 10:39PMMoonset 10:49AM Illumination 75% Phase: Waning Gibbous; Moon at 20 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- 911 Am Pdt Tue Aug 20 2019
Today..Variable winds 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 15 seconds. Patchy fog in the morning.
Tonight..W winds 10 to 15 kt, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 3 ft at 10 seconds.
Wed..Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 7 seconds. SW swell 2 ft.
Wed night..SW winds 10 to 15 kt, becoming se 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 3 ft at 7 seconds.
Thu..S winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft at 9 seconds.
Thu night..Winds variable 10 kt or less, becoming se 10 to 15 kt after midnight. Wind waves 2 ft or less. W swell 2 to 3 ft at 9 seconds. SW swell 2 ft.
Fri..S winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and sw 2 ft.
Sat..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 ft.
PZZ600 911 Am Pdt Tue Aug 20 2019
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 16z, or 9 am pdt, a 1019 mb surface high was located about 6560 nm west of san diego with a 994 mb low located 650 nm W of portland or. A 1007 mb thermal low was centered near yuma az.


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 201226
afdlox
area forecast discussion
national weather service los angeles oxnard ca
526 am pdt Tue aug 20 2019

Synopsis 20 526 am.

Temperatures will trend warmer through midweek with many valley
locations in the mid to upper 90s, while the antelope valley
climbs back into triple digit heat Wednesday and Thursday.

Temperatures will cool slightly on Friday, then a modest warming
trend this weekend. Night through morning low clouds will remain
limited to coastal areas and the santa ynez valley each day
through Thursday then increase coverage again beginning this
weekend affecting coastal valleys.

Short term (tdy-thu) 20 253 am.

There is no eddy tonight and there are 1 to 2 mb offshore trends
in all directions. These two items have combined to eliminate the
marine layer stratus south of pt conception. Brisk NW flow has
brought stratus to all of the central coast and the santa ynez
vly.

It now seems almost certain that the mdl fcst given last weekend
is not going to pan out. Instead of a ridge or upper high, there
will be broad cyclonic flow albeit with fairly high hgts.

591 dm hgts and only weak onshore flow will combine today to bring
3 to 6 degrees of warming today to all areas except the beaches
which will see little change. The interior will be 3 to 6 degrees
warmer than usual... The vlys and the interior coastal sections
will be near normal, while the coastal areas nearer to the beaches
will still be several degrees blo normal.

It does not look like there is any mechanism to develop stratus
south of pt conception again tonight so looks for clear skies. The
central coast will still have plenty of stratus due to the NW flow
off of the waters. The bigger news tonight will be the sundowner.

The ksmx-ksba gradient will approach -4mb this evening and this
should bring about 35 to 45 mph gusts through and below the
passes and canyons of the santa ynez range. The strongest winds
will be west of goleta. A wind advisory has been issued for this
area starting at 6pm.

There is actually offshore flow from the north on Wednesday
morning. The hgts stay about the same. Still the low level air
mass will be warmer and MAX temps will climb a few more degrees.

There could be locally bigger warm ups in and around north
oriented canyons due to the morning offshore flow. At this time it
just looks like a warmer than normal day, but there should not be
a need for any heat products.

There will be another sundowner focused on gaviota it will flirt
with minimal advisory levels.

Hgts fall and onshore flow increases on Thursday. There may be a
few patches of stratus south of pt conception. MAX temps will slip
a bit but for the most part will remain above normal.

Long term (fri-mon) 20 304 am.

Fairly ambiguous weak upper level flow will be over southern ca
as all of the major features will be to the north west and east of
the area. Hgts will remain near 591 dm through the period. The
forecast dilemma resides in the low level flow. The GFS brings
back moderate onshore flow for the period, which would bring low
clouds back along with a cooling trend. The ec, on the other hand,
has weak onshore and even some weak offshore flow during the
period. The ec solution would be sunnier and warmer. The ec
struggles with sfc pressure and given the patter feel the GFS is
the way to go.

At one time there looked as if the remnants of a tropical system
could affect the area but both the ec and GFS no longer see this
threat.

Aviation 20 1058z.

At 08z at klax, the marine layer was 900 ft deep. The top of the
inversion was around 1300 ft with a temp of 24c.

High confidence in ksba, kbur, kvny, kpmd and kwjf tafs.

Otherwise..

N of point concepton... Moderate confidence with ifr cigs. There is
a 30% chance for lifr CIGS at kprb after 11z. Scour out times
should be + - 1 hour this morning, with similar timing expected
for CIGS to redevelop this evening.

S of point conception... Moderate confidence forVFR conds for
coastal TAF sites. There is a 30% chance for ifr MVFR CIGS to
develop at klax and koxr after 12z. Low confidence that any cigs
across coastal TAF sites will develop.

Klax... Moderate confidence in 12z taf. There is a 30% chance for
ifr MVFR CIGS to develop between 12-16z. Low clouds will be patchy
in nature. There will be a 50% chance of MVFR CIGS after 11z wed
morning. Good confidence in no east wind component over 3 kt.

Kbur... High confidence in cavu 12z taf. Confidence in taf.

Marine 20 246 am.

Outer waters... Moderate to high confidence in current forecast.

Small craft advisory (sca) level winds are expected to continue
through at least early Wednesday afternoon. There is a 30% chance
that winds will briefly drop below SCA levels late tonight and
wed morning. There is a 50% chance for gale force winds to develop
across the outer waters including areas NW of san nicolas island
from Wednesday afternoon through early Thursday morning. Therefore
a gale watch has been issued and valid for that time. There is a
30% chance that winds will briefly drop below SCA levels late tue
night and Wed morning.

Inner waters north of pt sal... Fair confidence in forecast with a
60% chance of SCA level winds during the afternoon and evening
today and Wednesday and a 40-50% chance on Thursday.

For the inner waters south of point conception... Good confidence
in forecast. There is a 60% chance for SCA level NW to N winds
across the western portions of the sba channel late this afternoon
through late tonight and once again during the same times
Wednesday. Not expecting sundowner winds on Thursday.

Lox watches warnings advisories
Ca... Wind advisory in effect from 6 pm this evening to 3 am pdt
Wednesday for zones 39-52. (see laxnpwlox).

Pz... Small craft advisory in effect from 3 pm this afternoon to 3
am pdt Wednesday for zones 645-650. (see laxmwwlox).

Small craft advisory in effect until 3 pm pdt Wednesday for
zones 670-673-676. (see laxmwwlox).

Gale watch in effect from Wednesday afternoon through late
Wednesday night for zones 670-673-676. (see laxmwwlox).

Hazard potential outlook (thu-mon)
Hot temperatures could lead to heat advisories for some inland
areas Thursday. The remnants of a tropical system could move north
into the region and bring chances for shower and thunderstorm
activity early next week. Strong rip currents and elevated surf is
also possible area area beaches.

Public... Rorke
aviation... Kaplan
marine... Kaplan
synopsis... Kaplan
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 8 mi58 min S 4.1 G 4.1 67°F 68°F1014.6 hPa
46221 - Santa Monica Bay, CA (028) 11 mi32 min 70°F2 ft
PSXC1 15 mi58 min E 2.9 G 2.9
OHBC1 - 9410660 - Los Angeles, CA 16 mi58 min 64°F1014.7 hPa
PFXC1 16 mi58 min S 4.1 G 4.1
PRJC1 18 mi58 min Calm G 1
46256 19 mi58 min 65°F2 ft
46222 - San Pedro, CA (092) 21 mi35 min 69°F3 ft
46253 27 mi58 min 67°F3 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 35 mi48 min NNW 12 G 16 1014.8 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 mi95 minN 010.00 miA Few Clouds70°F63°F79%1014 hPa
Hawthorne, Hawthorne Municipal Airport, CA5 mi95 minN 010.00 miFair67°F61°F81%1014.1 hPa
Santa Monica, Santa Monica Municipal Airport, CA8 mi97 minN 010.00 miFair67°F63°F87%1014.2 hPa
Torrance, Zamperini Field Airport, CA9 mi1.7 hrsN 010.00 miClear66°F62°F88%1014.2 hPa
Los Angeles / USC Campus Downtown, CA11 mi96 minN 07.00 miFair71°F62°F73%1013.8 hPa
Long Beach, Long Beach Airport, CA16 mi95 minENE 410.00 miFair69°F61°F76%1014.1 hPa
Burbank - Bob Hope Airport, CA20 mi95 minSSE 310.00 miFair67°F57°F73%1013.2 hPa
Van Nuys, Van Nuys Airport, CA21 mi97 minN 010.00 miFair68°F57°F70%1013.4 hPa
Los Alamitos Army Airfield, CA22 mi90 minN 010.00 miFair67°F59°F78%1014.5 hPa
Fullerton, Fullerton Municipal Airport, CA24 mi95 minENE 48.00 miFair69°F59°F70%1013.9 hPa
Los Angeles, Whiteman Airport, CA24 mi98 minN 010.00 miClear68°F53°F60%1015.9 hPa

Link to 5 minute data for KLAX

Wind History from LAX (wind in knots)
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Last 24hr33SW8W9SW10W12W13W14W12W13W11SW8SW6SW4S4SE5CalmCalmSW3CalmS3E3Calm3
1 day agoSE74W9W8SW10W11W12W13
G17
W13W14W13W10W8SW8SW5SW4W4SW4SW6CalmCalmCalmE3SE5
2 days ago5SE5W8SW10SW11W10W12W12W10W8W8W9W7W44SE4S5CalmE3E3SW4E44S6

Tide / Current Tables for El Segundo, Santa Monica Bay, California
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El Segundo
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Tue -- 12:19 AM PDT     4.33 feet High Tide
Tue -- 06:18 AM PDT     Sunrise
Tue -- 06:45 AM PDT     1.21 feet Low Tide
Tue -- 10:49 AM PDT     Moonset
Tue -- 01:16 PM PDT     4.35 feet High Tide
Tue -- 07:22 PM PDT     2.03 feet Low Tide
Tue -- 07:34 PM PDT     Sunset
Tue -- 10:38 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.34.23.83.22.41.81.31.21.52.12.83.54.14.34.33.93.32.82.322.12.42.83.3

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Tue -- 12:08 AM PDT     4.44 feet High Tide
Tue -- 06:19 AM PDT     Sunrise
Tue -- 06:36 AM PDT     1.22 feet Low Tide
Tue -- 10:49 AM PDT     Moonset
Tue -- 01:07 PM PDT     4.47 feet High Tide
Tue -- 07:10 PM PDT     2.07 feet Low Tide
Tue -- 07:34 PM PDT     Sunset
Tue -- 10:39 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.44.33.83.12.41.71.31.21.62.233.74.24.54.33.93.32.72.32.12.22.533.4

Weather Map and Satellite Images
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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.
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Wind Forecast for Los Angeles/Oxnard, CA (12,3,4,5)
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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.