Thursday, November22, 2018 L-36.com


Marine Weather and Tides
El Segundo, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 6:32AMSunset 4:47PM Thursday November 22, 2018 3:05 AM PST (11:05 UTC) Moonrise 5:51PMMoonset 6:46AM Illumination 100% Phase: Full Moon; Moon at 14 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- 219 Am Pst Thu Nov 22 2018
.small craft advisory in effect from noon pst today through late tonight...
Today..W winds 10 to 15 kt, becoming 15 to 25 kt in the afternoon. Combined seas 2 to 3 ft dominant period 14 seconds, building to 4 to 5 ft dominant period 6 seconds in the afternoon. Chance of showers in the morning.
Tonight..W winds 10 to 20 kt with gusts to 25 kt, becoming nw 10 to 15 kt after midnight. Combined seas 4 to 6 ft dominant period 6 seconds.
Fri..Western portion, nw winds 15 to 20 kt becoming 20 to 25 kt in the afternoon. Elsewhere, N winds 5 to 10 kt becoming W 10 to 15 kt in the afternoon. Combined seas 4 to 6 ft dominant period 6 seconds.
Fri night..Western portion, W winds 20 to 25 kt. Elsewhere, W winds 10 to 15 kt becoming nw 5 to 10 kt after midnight. Combined seas 5 to 7 ft dominant period 6 seconds.
Sat..Western portion, nw winds 20 to 25 kt becoming 15 to 20 kt in the afternoon. Elsewhere, nw winds 5 to 10 kt. Combined seas 4 to 6 ft dominant period 6 seconds.
Sat night..W winds 15 to 20 kt in the evening, becoming variable 10 kt or less. Wind waves 1 to 3 ft. W swell 3 to 4 ft at 6 seconds.
Sun..N winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft.
Mon..NW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 ft.
PZZ600 219 Am Pst Thu Nov 22 2018
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 10z...or 2 am pst, a frontal system will continue to move over the coastal waters through this morning. A 1024 mb surface high about 500 nm south of point conception will build in through the weekend. An extended period of widespread choppy seas likely through Saturday, mainly south of point conception.


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 220639
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
1039 pm pst Wed nov 21 2018

Synopsis 21 902 pm.

The slight chance of thunderstorms across some areas are expected
tonight, but will be scattered by thanksgiving morning. Dry
weather will prevail through the weekend and into early next week.

There is a slight chance of showers across north of point
conception Friday and Friday night. Cool temperatures through
Friday, but will warm up by going into the weekend.

Short term (wed-sat) 21 728 pm.

***update***
the cold front is draped across the central coast. A weak warm
front has developed across the sba south coast. These two fronts
have brought rain to most of slo and sba counties. Rainfall rates
across coastal slo county are mostly a quarter to a half inch per
hour with one reading of .70 per hour. Rainfall rates across the
interior of slo county and sba county are much lighter. A few
showers were reported across vta county. The front will march
across the area tonight and will reach la county around 4 am.

There is no thunder with with main front but the post frontal trof
which is about 120 miles west of the central coast has a potent
vorticity maximum at its base which is generating quite a bit of
lightning. This vort MAX will enter the outer waters a little
before midnight and will move across the land after midnight and
before dawn.

Current forecast for timing and amounts looks on track based on
current rainfall rates, satellite imagery and the 00z nam.

***from previous discussion***
the upper level trof will accelerate tonight as it interacts with
a 160-170 kt jet.

The front will spread rain across the rest of the forecast area
tonight. There will also be enough instability with the upper trof
and front to warrant a slight chance of thunderstorms this evening
over slo sba counties and over most of the forecast area later
tonight, including the woolsey and hill burn areas. The main jet
core should stay over northern and central parts of the district
tonight which is not the most favorable location for heavy rain
across SRN vtu l.A. Counties, but some enhance rainfall will be
possible even in these areas, especially if any thunderstorms
develop. Pwat values are forecast to be in the 1.00 to 1.20 inch
range, enough to contribute to moderate to locally heavy rain at
times with the front especially in any thunderstorms and along s
facing slopes.

Rain will turn to scattered showers in l.A. County by Thu morning,
with showers mostly ending elsewhere. Skies should become partly
cloudy in all areas Thu afternoon and Thu night.

Rainfall totals thru Thu morning can be expected to be about 0.50 to
0.75 inches across slo and sba counties, with local totals of 1 to
1.50 inches in the foothills and mountains. Isolated totals up to 2
inches are possible across the higher terrain of northwestern slo
county. Across ventura and los angeles counties, rainfall totals of
generally between 0.30 and 0.70 inches are forecast. Local totals of
0.70 inches to 1.25 inches are possible in the foothills and
mountains of vtu and l.A. Counties, especially in western ventura
county and in the santa monica mountains.

The rain should still be significant enough to cause some issues
in and around the recent burn areas, especially the woolsey and
hill burn areas, with the potential for rock slides, mud slides
and minor debris flows. Residents in and near the burn areas
should stay tuned to the latest forecasts and any future
advisories or statements on this rain event.

Flat upper level ridging behind the trof should prevail over srn
ca most of Thu thru fri, with a broad wnw flow aloft. A weak upper
level trof will pass just to the E of the area Fri night with the
tail end of a cold front moving thru northern parts of the area
into Sat morning, followed by weak upper level ridging for sat
afternoon.

A weak disturbance should bring a slight chance of showers mainly to
slo county on fri, followed by another slight chance to chance of
showers for slo sba counties and the vtu l.A. County mtns Fri night
into Sat morning as that second weak front dissipates over the area.

Partly to mostly cloudy skies will prevail across the region fri
into Sat morning, with partly cloudy skies expected across the
entire region Sat afternoon. Rainfall from Fri thru Sat morning will
be generally less than 0.10 inch across slo sba counties into the
mtns of vtu l.A. Counties. Local amounts up to 0.15 inch are
possible along the N mtn slopes and across the foothills in far nw
slo county.

Temps across the region are forecast to remain several degrees below
normal for many areas Thu and fri, then warm to near normal for sat.

Highs for the vlys and coastal areas should reach the mid to upper
60s thu, mid 60s to around 70 on Fri and upper 60s to lower 70s on
sat.

Long term (sun-wed) 21 244 pm.

The ec and GFS are in reasonable agreement Sun and mon, then some
differences start showing up Tue and wed. It looks like a positive
tilted upper level trof will move into ca on sun, then move S of the
region Sun night and Mon with upper ridging building into central
ca. This pattern will bring offshore flow to the area with mostly
clear skies and warmer temps.

On tue, the ec breaks down the upper ridging with gradually
lowering h5 heights while the GFS keeps some upper ridging over
srn ca. The ec also brings a cold front into the area with a
chance of rain by late tue. Opted to lean toward the GFS for tue
and kept dry and mild weather over the region. For Tue night and
wed, the ec forecasts an upper trof with continued lowering of
the h5 heights over the area while the GFS keeps a flat upper
ridge in place. The ec brings the frontal system thru the
forecast area during the period with a chance of rain, while the
gfs indicates the frontal system not approaching the area until
late in the day on wed. For this period, went with a loose blend
of the two models and introduced a slight chance of showers mainly
to slo sba counties mainly for wed. Not much confidence in the
forecast for Tue and Wed due to model differences.

Temps should be several degrees above normal for many areas on sun,
warm to 4 to 8 deg above normal with the offshore flow mon, then
remain several degrees above normal for most areas Tue and wed.

Highs in the warmest vlys and inland coastal areas should be in the
mid 70s on sun, mid 70s to around 80 mon, mid to upper 70s tue, and
mid 70s on wed.

Aviation 22 0638z.

At 06z, there was no marine layer at klax.

Moderate confidence in the current forecast. Periods of MVFR
conditions will continue at regional terminals through 18z as a
frontal system continues to move over the area. There is a chance
of ifr conditions in heavier rain showers.VFR conditions should
develop between 15z and 19z. There is a chance of moderate wind
shear and turbulence on thanksgiving night at ksba.

Klax... MVFR conditions will likely linger through at least 11z or
as late as 16z. There is a 60 percent chance of ceilings at or
below 5000 feet lingering until 19z or 20z. East winds between 5
and 10 knots are possible through 12z.

Kbur... MVFR conditions will likely develop by 07z and linger
through at least 12z or as late as 17z. There is a 70 percent
chance of ceilings at or below 5000 feet lingering until 19z or
20z.

Marine 21 841 pm.

A storm system will move through the waters this evening and
overnight. Gusty SE winds will affect most waters. Thunderstorms
are possible tonight anywhere, but especially off the central
coast.

Gusty west to northwest winds will follow later Thursday and
Friday south and east of point conception, then expand to the
central coast on Saturday. A long duration of SCA conditions is
likely with building short period seas, including the santa
barbara channel and santa monica basin.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect from noon Thursday to 6 am pst
Friday for zones 650-655-676. (see laxmwwlox).

Hazard potential outlook (sat-wed)
No significant hazards expected.

Public... Sirard rorke
aviation... Hall
marine... Rorke
synopsis... Delerme
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 8 mi36 min W 1.9 G 5.1 60°F 65°F1019.2 hPa
46221 - Santa Monica Bay, CA (028) 11 mi36 min 66°F3 ft
PXAC1 13 mi36 min SW 6 G 8
BAXC1 14 mi36 min SW 15 G 17
PSXC1 15 mi36 min SW 12 G 16
PFXC1 16 mi36 min SW 12 G 16 61°F
PFDC1 16 mi36 min S 11 G 12
OHBC1 - 9410660 - Los Angeles, CA 16 mi36 min 66°F1018.9 hPa
AGXC1 17 mi36 min SW 11 G 14 62°F 1018.9 hPa
PRJC1 18 mi36 min W 15 G 19
46256 19 mi36 min 66°F2 ft
46222 - San Pedro, CA (092) 21 mi36 min 66°F3 ft
46253 27 mi36 min 66°F2 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 35 mi26 min WNW 12 G 14 64°F 66°F1018.4 hPa61°F

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 mi73 minENE 71.25 miRain Fog/Mist59°F57°F93%1018.7 hPa
Hawthorne, Hawthorne Municipal Airport, CA5 mi73 minN 03.00 miLight Rain Fog/Mist58°F57°F100%1018.8 hPa
Santa Monica, Santa Monica Municipal Airport, CA8 mi75 minENE 32.00 miLight Rain Fog/Mist63°F59°F87%1018.6 hPa
Los Angeles / USC Campus Downtown, CA11 mi79 minN 01.75 miHeavy Rain Fog/Mist58°F55°F93%1018.5 hPa
Long Beach, Long Beach Airport, CA16 mi73 minN 02.00 miHeavy Rain Fog/Mist61°F59°F93%1018.8 hPa
Burbank - Bob Hope Airport, CA20 mi73 minESE 78.00 miLight Rain55°F55°F100%1017.8 hPa
Van Nuys, Van Nuys Airport, CA21 mi75 minESE 72.00 miLight Rain Fog/Mist58°F55°F90%1018 hPa
Los Alamitos Army Airfield, CA22 mi68 minE 53.00 miLight Drizzle Fog/Mist59°F58°F100%1018.9 hPa
Fullerton, Fullerton Municipal Airport, CA24 mi73 minE 73.00 miLight Rain Fog/Mist59°F55°F90%1018.4 hPa

Wind History from LAX (wind in knots)
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Last 24hrNE3E3E3SE4E453SE4S5W8W8W11W6W7SW3W5435SE7E6E5NE7NE9
1 day agoNE3E6CalmCalmCalmS3W3SW54W5W8W11W10W8W9SW4CalmE4SE5CalmNE5E3NE3E3
2 days agoE4CalmE5E6E5E6CalmCalmSW5W6W6W7NW4SW6W5SW4SW4E4NE4NE3NE5CalmCalm3

Tide / Current Tables for El Segundo, Santa Monica Bay, California
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El Segundo
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Thu -- 01:50 AM PST     1.34 feet Low Tide
Thu -- 05:46 AM PST     Moonset
Thu -- 06:32 AM PST     Sunrise
Thu -- 08:06 AM PST     6.08 feet High Tide
Thu -- 03:00 PM PST     -0.53 feet Low Tide
Thu -- 04:46 PM PST     Sunset
Thu -- 04:51 PM PST     Moonrise
Thu -- 09:16 PM PST     4.14 feet High Tide
Thu -- 09:41 PM PST     Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.11.51.31.72.53.74.85.76.15.84.93.62.10.7-0.2-0.5-0.20.61.72.93.74.143.5

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Thu -- 01:39 AM PST     1.42 feet Low Tide
Thu -- 05:46 AM PST     Moonset
Thu -- 06:33 AM PST     Sunrise
Thu -- 07:55 AM PST     6.34 feet High Tide
Thu -- 02:49 PM PST     -0.51 feet Low Tide
Thu -- 04:46 PM PST     Sunset
Thu -- 04:51 PM PST     Moonrise
Thu -- 09:05 PM PST     4.29 feet High Tide
Thu -- 09:41 PM PST     Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.11.51.41.92.845.26.16.35.94.93.51.90.6-0.3-0.5-0.10.923.244.34.13.5

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 (6,6,7,8)
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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.