Saturday, November17, 2018 L-36.com


Marine Weather and Tides
Hermosa Beach, 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 6:27AMSunset 4:50PM Saturday November 17, 2018 3:30 PM PST (23:30 UTC) Moonrise 2:59PMMoonset 1:48AM Illumination 75% Phase: Waxing Gibbous; Moon at 10 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- 211 Pm Pst Sat Nov 17 2018
Tonight..SW winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. S swell 3 ft at 13 seconds. Patchy fog.
Sun..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. S swell 2 ft at 13 seconds. Patchy fog.
Sun night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 ft at 13 seconds and S 2 ft at 13 seconds. Patchy fog.
Mon..S winds 5 to 10 kt in the morning, becoming variable 10 kt or less. Wind waves 2 ft or less. S swell 2 ft at 16 seconds. Patchy fog in the morning.
Mon night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. S swell 2 ft at 16 seconds. Patchy fog after midnight.
Tue..Winds variable 10 kt or less, becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. S swell 2 ft at 16 seconds. Patchy fog in the morning.
Tue night..SW winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. S swell 2 ft at 16 seconds.
Wed..S winds 5 to 10 kt. Wind waves 2 ft or less. S swell 2 ft. Chance of rain.
Thu..NW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 ft. Slight chance of showers.
PZZ600 211 Pm Pst Sat Nov 17 2018
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 22z...or 2 pm pst, a 1018 mb high 50 nm west of point conception was producing weak onshore flow across the waters.


7 Day Forecast for Marine Location Near Hermosa Beach, CA
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location: 33.85, -118.4     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 172212
afdlox
area forecast discussion
national weather service los angeles oxnard ca
212 pm pst Sat nov 17 2018

Synopsis 17 103 pm.

Onshore flow will keep temperatures near normal in most areas
through Sunday. A brief period of offshore flow may bring some
warming on Monday, then cooler weather is expected for Tuesday
and Wednesday with below normal temperatures for the rest of the
week. A couple of low pressure systems moving into the west coast
could bring some rain to portions of southwestern california at
times Wednesday into Friday.

Short term (tdy-tue) 17 210 pm.

After a bit of a reprieve today, a large batch of high clouds are
bruin, and will stream into the region late today and tonight
like a losing trojan horse. This will likely keep low clouds and
fog coverage rather tattered, albeit present and hard to see by
satellite. Pockets of dense fog are likely again, especially over
northern sba and slo counties.

A weak short wave trough currently moving through the great basin
will generate a weak surface high over northern utah later Sunday
through Monday. Offshore flow will spin up over the interior
valleys and mountains of los angeles and ventura counties by
Sunday afternoon, as the lax-dag gradient becomes neutral. The
winds will become more east to southeast Sunday night and Monday,
while spreading into the coastal and valley areas, as well as
interior slo and sba counties. Gusts between 25 and 35 mph are
likely in the windier areas. This will disrupt the low clouds and
fog to some unknown degree. Temperatures should warm up a few
degrees over the coastal and valley areas on Sunday, with little
change on Monday. Interior areas will change little from today to
Sunday, while cooling on Monday with a shot of cold air advection.

Periods of high clouds will remain.

By Tuesday, onshore flow will return quickly as an upper level low
moves through. Pretty confident that all the moisture with this
feature will stay to our south, but temperatures should lower by
about 5 degrees from Monday.

Long term (wed-sat) 17 210 pm.

An upper low currently over the aleutian islands will swing into
northern california on Wednesday, with a cold front sweeping down
the west coast ahead of it. Fairly confident that the cold front
will hold together and bring steady light to moderate rain to slo
and sba counties on Wednesday, as the last few model runs have
been consistently hitting Wednesday with the trough digging so
far to the south. Upped pops to 60-70 percent as a result. Still
uncertain on amounts, but based on the ensembles, 0.25 to 1.00
inches looks like a good first guess. There will be unstable air
closer to the trough, and while not in the forecast yet,
thunderstorms could nip the central coast. The cold front will die
somewhere between los angeles and mexico, but the latest
projections have been consistently holding the front together all
the way to the mexican border. Upped pops for ventura and los
angeles county as a result, now up into the 40-50 percent range
for Wednesday afternoon or night. Future projections could kill
the front further to the north, so it is still not a done deal for
rain there, but the trends are favoring rain rather than not.

With rain in the forecast, there will be concern for debris flows
over recent burn areas. While the current projections do not favor
heavy enough rain rates to cause debris flows, the chance is
higher than zero, especially with the outside threat of
thunderstorms. Residents in vulnerable areas in and near recent
burn scars should monitor the forecast regularly and closely... Not
only for this storm, but for the rest of the rain season.

For Thursday and Friday, some showers may linger, but projections
have been wavering each day so cannot hang my hat on much. The
overall pattern however remains unsettled, and would expect
additional rounds of rain or showers through next weekend with
cool conditions and periods of clouds.

Aviation 17 1857z.

At 1730z, the marine layer was 1500 ft deep. The top of the
inversion was at 2700 feet with a temperature of 16c.

Made some changes to the TAF package at 18z. Model data was
hinting at the marine clouds arriving earlier than forecast in
many coastal sections. Also, it appears that due to calm to light
winds, the marine influence was overperforming in terms of lower
visibilities ceilings. Therefore, the tafs were tweaked toward
ifr or lifr tonight. Finally, a tough call on the valley tafs. It
now looks likely that the marine clouds will return to kbur kvny,
but it is not a sure thing.

Klax... Moderate confidence in the 18z taf. There is a 30 percent
chc of lifr conditions. There is a 20 percent chc of east winds
8-9kt Sun morning.

Kbur... Low confidence in the 18z taf. There is a 30-40 percent
chance that marine clouds will not make it to the airfield.

Marine 17 211 pm.

High confidence in winds staying below small craft advisory (sca)
through at least Tuesday. Patchy dense fog will be possible
anywhere through this weekend.

Lox watches warnings advisories
Ca... None.

Pz... None.

Hazard potential outlook (tue-sat)
Rain is possible for the middle to end of next week. There is a
small possibility of moderate rainfall over recent burn areas
leading to minor debris flows.

Public... Kittell
aviation... Sweet
marine... Sweet
synopsis... Sirard
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PXAC1 9 mi55 min S 6 G 8
BAXC1 10 mi37 min SSW 7 G 8
OHBC1 - 9410660 - Los Angeles, CA 11 mi31 min 66°F1016.2 hPa (-1.1)
PSXC1 11 mi31 min S 8 G 8.9
PFDC1 12 mi31 min S 8 G 8.9
PFXC1 12 mi31 min SSW 8.9 G 8.9 66°F
46221 - Santa Monica Bay, CA (028) 12 mi31 min 67°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 12 mi31 min W 5.1 G 5.1 64°F 65°F1016.3 hPa (-1.1)
AGXC1 12 mi31 min SW 8 G 9.9 65°F 1016.2 hPa (-1.3)
PRJC1 14 mi31 min SW 7 G 8
46256 15 mi31 min 65°F3 ft
46222 - San Pedro, CA (092) 17 mi31 min 67°F3 ft
46253 22 mi31 min 67°F2 ft
46262 34 mi31 min 67°F3 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 35 mi21 min SSE 1.9 G 1.9 65°F 66°F1015.7 hPa61°F

Wind History for Los Angeles Berth 161,
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Torrance, Zamperini Field Airport, CA5 mi40 minW 1010.00 miPartly Cloudy68°F57°F69%1015.6 hPa
Los Angeles, Los Angeles International Airport, CA6 mi38 minW 710.00 miMostly Cloudy66°F57°F73%1015.9 hPa
Hawthorne, Hawthorne Municipal Airport, CA6 mi38 minWSW 510.00 miFair68°F57°F68%1015.7 hPa
Los Angeles / USC Campus Downtown, CA13 mi44 minVar 39.00 miFair69°F55°F63%1015.2 hPa
Long Beach, Long Beach Airport, CA13 mi38 minSSW 610.00 miFair68°F57°F68%1015.7 hPa
Santa Monica, Santa Monica Municipal Airport, CA13 mi40 minSW 510.00 miFair69°F55°F61%1015.7 hPa
Los Alamitos Army Airfield, CA19 mi93 minWSW 510.00 miPartly Cloudy70°F55°F60%1016.2 hPa
Fullerton, Fullerton Municipal Airport, CA22 mi38 minSSW 410.00 miFair71°F48°F44%1015.3 hPa
Burbank - Bob Hope Airport, CA24 mi38 minS 410.00 miFair71°F43°F36%1014.5 hPa

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Last 24hrW9W6W7S3S3--------------------E3Calm3555CalmW10W10
1 day agoW9SW5SW5CalmCalm--------------------3CalmCalmCalm434SW3W7
2 days agoW9W11W10W9W5--------------------CalmCalmCalmCalm3W8SW8SW9W6

Tide / Current Tables for King Harbor, Santa Monica Bay, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Los Angeles Harbor, Mormon Island, California
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Los Angeles Harbor
Click for Map
Sat -- 12:48 AM PST     Moonset
Sat -- 05:52 AM PST     4.54 feet High Tide
Sat -- 06:26 AM PST     Sunrise
Sat -- 11:53 AM PST     2.11 feet Low Tide
Sat -- 01:57 PM PST     Moonrise
Sat -- 04:48 PM PST     Sunset
Sat -- 05:21 PM PST     3.90 feet High Tide
Sat -- 11:34 PM PST     0.97 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.72.43.23.94.44.54.33.83.22.62.22.12.32.73.23.63.93.83.52.82.11.41

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 (18,4,5,8)
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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.