Saturday, December7, 2019
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Marine Weather and Tides
Hermosa Beach, CA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
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 6:44AMSunset 4:46PM Saturday December 7, 2019 6:17 AM PST (14:17 UTC) Moonrise 3:16PMMoonset 3:16AM Illumination 81% Phase: Waxing Gibbous; Moon at 11 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- 228 Am Pst Sat Dec 7 2019
Today..E winds 5 to 10 kt, becoming se 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 15 seconds. Showers likely.
Tonight..S winds 5 to 10 kt. Wind waves 2 ft or less. W swell 3 to 5 ft at 13 seconds. Showers likely in the evening, then chance of showers.
Sun..Winds variable 10 kt or less, becoming sw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 3 to 5 ft at 12 seconds. Chance of showers.
Sun night..W winds 10 to 15 kt, becoming nw 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 3 to 5 ft at 11 seconds. Slight chance of showers.
Mon..Winds variable 10 kt or less, becoming nw 10 kt in the afternoon. Except between point mugu to malibu in the morning, nearshore ne winds 10 to 20 kt. Wind waves 1 to 3 ft. W swell 2 to 4 ft at 10 seconds.
Mon night..NW winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 2 to 3 ft at 10 seconds.
Tue..NW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 ft.
Wed..NW winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft and S 2 ft.
PZZ600 228 Am Pst Sat Dec 7 2019
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 997 mb low was 300 nm west of eureka. A cold front was extending S from san francisco than sw several hundred miles off san diego coast. There was a 1027 mb high over western colorado. This front will move E tonight and into the coastal waters on Sat with gusty se winds and choppy seas over much of the area. A relatively large wnw swell will affect the coastal waters through tonight.


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 071222 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 422 AM PST Sat Dec 7 2019

SYNOPSIS. 07/306 AM.

A cloudy and showery weather pattern will continue across the region into Sunday as a moist air mass with a storm system moves over the area. Dry weather will develop for much of next week along with some warming for latter half of the week.

SHORT TERM (TDY-MON). 07/351 AM.

A showery weather pattern continues to develop across the area this morning as an upper-level trough near 40N and 130W continues to move toward the North Coast of California. A moist air mass continues to stream over the area this morning. A look into some breaks in the cirrus deck on GOES-West shows a large swath of clouds moving northeast into southern California. NAM-WRF solutions show 850 mb mixing ratios greater than 8 g/kg across the area pushing into the southern area this morning. An upslope flow with weak warm air advection will interact with the moisture and continue precipitation across the region. Orographic lift should enhance precipitation totals right along the south facing slopes of foothills and mountains. PoPs have been nudged high across the coastal and valley areas today.

Around an additional 0.33 to 0.50 inch of rainfall is forecast across the coastal and valley areas into Sunday night, with up to between an additional 0.75 inch to 1.50 inches in the foothills and mountains. Storm total precipitation should come in around 0.50-1.00 inch across the coastal and valley areas. Mountain locations could do a tad better with some local amounts between 2.00 and 2.50 inches possible. Much drier conditions are forecast for the desert with totals ranging around 0.10-0.20 inch.

Some marginal instability moving across the region late tonight and Sunday could bring isolated thunderstorms to portions of the area, mainly north and west of Ventura County, which includes the Cave burn area in Santa Barbara County. Isolated higher rainfall rates up to around 0.50 inch per hour are possible as this instability moves, but rainfall should remain less than USGS estimates for mud and debris flows.

While snow levels will largely remain above 6000 feet with this storm system, colder air aloft with the trough moves into the region Sunday night and into early Monday, which could lower the snow levels as low as 5000 to 5500 feet in some locations. With the moisture source region of this system, snow to water ratios should be a little lower and only an inch or two of snow is expected above 7000 feet.

LONG TERM (TUE-FRI). 07/340 AM.

Drier weather is the theme for next week. Ridging aloft will build in across the region between Monday and Tuesday, then a weak weather system will brush the area. A slight cool down is expected for Tuesday and Wednesday with a bit more clouds. By late next week, ridging aloft should grab ahold of the weather pattern for the latter half of next week and bring warmer temperatures.

AVIATION. 07/1220Z.

At 0945Z, there was no marine inversion at KLAX.

Low to moderate confidence in all 12Z TAFs. MVFR conditions are likely through the period. During periods of heavier rainfall, cigs and vis may briefly drop to IFR levels with the best confidence after 00Z.

KLAX . Low to moderate confidence in TAF. MVFR conditions will become likely through the period after 15Z. There is a 30 percent chance of IFR conditions in heavier rainfall through 03Z, then a better chance afterward. East winds up to 8 knots are likely to continue through 21Z. There is a 40 percent chance that east winds up to 6 knots may linger into the evening.

KBUR . Low to moderate confidence in TAF. MVFR conditions are likely through the period. There is a 30 percent chance of IFR conditions in heavier rainfall through 02Z, then better chance afterward.

MARINE. 07/258 AM.

For the Outer Waters, moderate confidence through this afternoon, than high confidence through at least Monday. A Small Craft Advisory (SCA) remains in effect for the northern zone PZZ670 through this afternoon and for PZZ673 just to the south through mid morning. There is a 30% chance that the southern zone PZZ676 will need a SCA through mid morning as well. On Tuesday and Wednesday, there is a 60% chance of SCA level winds across PZZ673 and PZZ676.

For the Inner Waters north of Point Sal, moderate to high confidence in current forecast. A SCA remains in effect. There is an 80% chance of SCA level winds and seas this morning. There is a 60% chance of SCA winds continuing into Saturday afternoon. For Sunday through Wednesday, high confidence in winds and seas remaining below SCA levels.

For the Inner Waters south of Point Conception, moderate to high confidence in current forecast. There is a 30%-40% chance of SCA level southeast winds across the northwestern half of the Santa Barbara Channel tonight through this morning. Otherwise, high confidence in winds and seas remaining below SCA levels through Tuesday. On Wednesday, there is a 50% chance of SCA level northwest winds across the western half of the Santa Barbara Channel.

BEACHES. 07/302 AM.

A relatively large, long-period, west to northwest swell will bring high surf conditions to the Central Coast as well as the Ventura county coast through Sunday morning.

For the Central Coast, surf heights will peak between 9 and 12 feet with local sets to 14 feet. For west-facing beaches of Ventura county, surf heights between 4 and 7 feet. Local sets to 9 feet can be expected through tonight. High surf will continue for these areas as HIGH SURF ADVISORIES will remain in effect through mid Sunday morning. For the west-facing beaches of southern Santa Barbara county and Los Angeles county, elevated surf conditions can be expected across exposed west facing beaches through Sunday with surf heights of 3-6 feet for Los Angeles county and 3-5 feet for southern Santa Barbara county.

For all coastal areas . there will be an increased risk for ocean drowning. Rip currents can pull swimmers and surfers out to sea. Large breaking waves can cause injury . wash people off beaches and rocks . and capsize small boats near shore.

LOX WATCHES/WARNINGS/ADVISORIES. CA . High Surf Advisory in effect until 8 AM PST Sunday for zones 34-35-40. (See LAXCFWLOX). PZ . Small Craft Advisory in effect until 3 PM PST this afternoon for zones 645-670. (See LAXMWWLOX). Small Craft Advisory in effect until 9 AM PST this morning for zone 673. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (MON-FRI).

No significant hazards expected.



PUBLIC . Hall AVIATION . Stewart MARINE . Kaplan BEACHES . Kaplan/RAT SYNOPSIS . Hall

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PXAC1 9 mi53 min NW 2.9 G 2.9
BAXC1 10 mi47 min ENE 8 G 11
OHBC1 - 9410660 - Los Angeles, CA 11 mi47 min 63°F1020.1 hPa
PSXC1 11 mi47 min NNE 5.1 G 7
46221 - Santa Monica Bay, CA (028) 12 mi21 min 62°F3 ft
AGXC1 12 mi53 min N 4.1 G 5.1
ICAC1 - 9410840 - Santa Monica Pier 12 mi47 min NNE 5.1 G 8 61°F 62°F1020.1 hPa
PFDC1 12 mi47 min NW 4.1 G 5.1
PFXC1 12 mi47 min NNE 1.9 G 5.1
PRJC1 14 mi47 min NNE 5.1 G 7
46256 15 mi47 min 61°F2 ft
46222 - San Pedro, CA (092) 17 mi24 min 63°F3 ft
46253 22 mi47 min 63°F2 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 35 mi27 min ENE 5.8 G 9.7 62°F 61°F4 ft1019.8 hPa61°F

Wind History for Los Angeles Berth 161,
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hawthorne, Hawthorne Municipal Airport, CA6 mi24 minN 010.00 miOvercast61°F55°F81%1020 hPa
Los Angeles, Los Angeles International Airport, CA6 mi24 minENE 310.00 miOvercast62°F55°F78%1019.9 hPa
Long Beach, Long Beach Airport, CA13 mi24 minNE 310.00 miOvercast60°F55°F84%1019.8 hPa
Los Angeles / USC Campus Downtown, CA13 mi25 minENE 410.00 miOvercast63°F55°F76%1019.7 hPa
Santa Monica, Santa Monica Municipal Airport, CA13 mi26 minNNE 410.00 miOvercast59°F55°F87%1019.9 hPa
Los Alamitos Army Airfield, CA19 mi79 minNE 410.00 miOvercast59°F56°F91%1019.6 hPa
Fullerton, Fullerton Municipal Airport, CA22 mi24 minE 310.00 miOvercast62°F54°F75%1019.7 hPa
Burbank - Bob Hope Airport, CA24 mi24 minN 02.50 miLight Rain Fog/Mist56°F54°F93%1019.5 hPa

Link to 5 minute data for KTOA

Wind History from TOA (wind in knots)
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Last 24hr--------------------CalmCalmCalmCalmCalmW7W5CalmCalmE6E6CalmCalmS11
1 day ago--------------------CalmCalmCalmCalm4CalmCalmCalmCalmW5NW3CalmSW4Calm
2 days ago--------------------E10E9E7CalmCalmCalm5Calm33SW4Calm--Calm

Tide / Current Tables for El Segundo, Santa Monica Bay, California
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El Segundo
Click for Map
Sat -- 02:15 AM PST     Moonset
Sat -- 06:20 AM PST     4.98 feet High Tide
Sat -- 06:45 AM PST     Sunrise
Sat -- 01:01 PM PST     1.00 feet Low Tide
Sat -- 02:15 PM PST     Moonrise
Sat -- 04:44 PM PST     Sunset
Sat -- 06:51 PM PST     3.59 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.62.233.94.654.94.43.62.71.81.211.21.72.433.53.63.42.92.31.7

Tide / Current Tables for Los Angeles Harbor, Mormon Island, California
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Los Angeles Harbor
Click for Map
Sat -- 02:15 AM PST     Moonset
Sat -- 06:11 AM PST     5.09 feet High Tide
Sat -- 06:44 AM PST     Sunrise
Sat -- 12:50 PM PST     1.04 feet Low Tide
Sat -- 02:15 PM PST     Moonrise
Sat -- 04:44 PM PST     Sunset
Sat -- 06:42 PM PST     3.64 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.41.72.43.34.14.85.14.94.43.52.61.71.211.31.82.53.23.63.63.42.82.21.7

Weather Map
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wmap_P
GEOS 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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Los Angeles/Oxnard, CA (9,2,3,4)
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Ground Weather Radar Station Santa Ana Mtns, CA
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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.