Tuesday, January21, 2020
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Marine Weather and Tides
Rolling Hills Estates, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 6:54AMSunset 5:14PM Tuesday January 21, 2020 9:35 AM PST (17:35 UTC) Moonrise 5:14AMMoonset 3:31PM Illumination 13% Phase: Waning Crescent; Moon at 26 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- 852 Am Pst Tue Jan 21 2020
Today..W winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft at 16 seconds. S swell 2 ft.
Tonight..W winds 10 to 15 kt, becoming N 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 3 ft at 16 seconds. S swell 2 ft.
Wed..N winds 10 to 15 kt, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 15 seconds.
Wed night..W winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 2 to 3 ft at 13 seconds. S swell 2 ft.
Thu..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. W swell 3 to 5 ft at 13 seconds.
Thu night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 2 to 4 ft at 13 seconds.
Fri..NW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 4 ft.
Sat..W winds 5 to 10 kt. Wind waves 2 ft or less. W swell 3 to 5 ft.
PZZ600 852 Am Pst Tue Jan 21 2020
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 16z or 8 am pst, a 1023 mb high was centered around 200 nm south of point conception. A moderately large and long period swell will affect the coastal waters through Wednesday night.


7 Day Forecast for Marine Location Near Rolling Hills Estates, CA
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location: 33.72, -118.27     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 211611 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 811 AM PST Tue Jan 21 2020

SYNOPSIS. 21/200 AM.

It will be cool with decreasing clouds today. It will be dry Wednesday through Saturday with a gradual warm up. There is a slight chance of rain on Sunday.

SHORT TERM (TDY-THU). 21/809 AM.

Latest satellite and surface observations indicate partly to mostly cloudy skies across the district this morning. Moisture axis that generated light precipitation overnight has moved south of the area. So, expect dry conditions today with partly to mostly cloudy skies. Temperatures today will be on the cool side (a couple degrees below normal) due to cloud cover and moderate onshore gradients. With the onshore gradients, there will be some locally gusty southwesterly winds across interior sections, but speeds should remain well below advisory-level concerns.

For tonight through Thursday, initial look at 12Z model data indicates no major issues. For tonight, the tail end of a weak system will clip San Luis Obispo county, bringing a chance of some very light precipitation to northern SLO county. Otherwise, partly cloudy conditions will continue overnight for all areas with some possibility of low clouds across the coastal plain. On Wednesday, skies should clear out with mostly clear conditions across the area. For Wednesday night and Thursday, there will likely be some interior clouds during the night and morning hours due to north to northeast flow. Also, some increasing high clouds can be expected on Thursday across northern sections. However, conditions will remain dry.

As for temperatures, today will be the coolest day in the short term. With upper level ridge building overhead and weak north to northeast surface gradients developing, Wednesday and Thursday will exhibit a nice warming trend with many coastal/valley areas in the upper 60s to mid 70s on Thursday.

As for winds, northerly gradients will develop this evening and continue through Wednesday evening with northerly winds in the usual spots (Santa Ynez Range and I-5 Corridor). The gradients are not too strong and upper level support is limited, so do not anticipate any widespread advisory-level winds (although the windy spots like Gaviota and Refugio will likely have localized advisory level gusts). For Wednesday night and Thursday, the gradients turn northeasterly. So, there will be some northeast winds across the area, but again speeds should remain below advisory levels.

LONG TERM (FRI-MON). 21/307 AM.

Both the GFS and EC agree that Friday and Saturday will be rather pleasant as ridging will hold sway over the area. Hgts will be near 573 DM. There will be enough northerly offshore flow to keep the low clouds away. The ridge is not strong enough to deflect the mid and high level clouds and skies will be partly cloudy. Max temps will rise a couple of degrees Friday and then hold steady on Saturday. Most max temps will end up 3 to 6 degrees above normal.

The EC and the GFS continue to agree on the forecast through Sunday. Both show a quick moving trof and associated cold front moving through the state. Most of the front's energy will remain fairly far to the north and the front will likely lose much of its punch as it rounds Pt Conception. Quite a number of both the GFS and EC's ensemble members keep LA county dry. The Central Coast will likely see rain and the only reason POPs are a little on the low side is due to timing issues. Whatever happens not much rain will fall. A half inch might be a generous estimate for the Central Coast with substantially less south of Pt Conception. Max temps will fall 3 to 6 degrees across the board.

Moderate north flow is forecast to develop behind the front on Sunday night and last into Monday. If the current mdl fcst comes true this event would produce advisory level gusts. Skies will clear and max temps will once again begin to rise.

AVIATION. 21/1204Z.

At 11Z, there was a moist layer up to about 12000 feet across the region. There were several different cloud layers, and ceilings will likely be quite variable today. In general, expect mostly MVFR conds this morning, with local IFR conds, improving to VFR in most areas (with the possible exception of coastal sections of L.A. County) this afternoon. Expect areas of MVFR cigs tonight across coastal sections of L.A. County and the Central Coast.

KLAX . Low confidence in the 12Z TAF. There is a 40-50% chance that cigs will either scatter out or rise into the VFR category this afternoon between 20Z and 01Z.

KBUR . Low to moderate confidence in the 12Z TAF. There is a 30-40% chance of MVFR cigs between 12Z and 19Z this morning, and again after 08Z tonight.

MARINE. 21/804 AM.

Hazardous seas are overspreading the outer waters and inner waters north of Point Sal this morning, and will continue through late Wed night. There is a 30% chance that seas will remain above Small Craft Advisory (SCA) levels into Thu morning.

Winds are expected to remain below SCA levels through Thu, though there is a 30-40% chance of SCA level wind gusts across portions of the outer waters today and Wed in the afternoon and evening. SCA level NW winds are likely across the outer waters Fri thru Sat, possibly beginning as early as late Thu night.

SCA level NW winds are expected across the northern inner waters Fri afternoon and evening.

SCA conds are not expected thru the period across the southern inner waters or the Santa Barbara Channel.

BEACHES. 21/810 AM.

A large long-period mostly northwest swell will affect the coastal waters through Wednesday night. Surf of 9 to 12 feet is expected on west and northwest facing beaches of the Central Coast. The peak of the surf is expected this evening when max sets to 14 feet are possible. A High Surf Advisory is in effect for the Central Coast beaches through 6 PM Wednesday.

A marginal High Surf Advisory was added for the Los Angeles and Ventura County beaches based upon the beach observations and offshore buoy observations last evening. Surf is expected to subside this afternoon, but may increasing again by late Wednesday.

With the high surf, there is 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 6 PM PST Wednesday for zones 34-35. (See LAXCFWLOX). High Surf Advisory in effect until 2 PM PST this afternoon for zones 40-41-87. (See LAXCFWLOX). PZ . Small Craft Advisory in effect until 3 AM PST Thursday for zones 645-670-673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (THU-MON).

No significant hazards expected.



PUBLIC . Thompson/Rorke AVIATION . DB MARINE . Sweet/DB BEACHES . Sweet/Hall SYNOPSIS . 30

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OHBC1 - 9410660 - Los Angeles, CA 0 mi53 min 60°F1021.4 hPa
AGXC1 1 mi77 min SE 2.9 G 4.1
PFDC1 2 mi77 min ESE 1.9 G 1.9
PFXC1 3 mi77 min SSE 2.9 G 4.1
PXAC1 3 mi77 min E 1 G 1.9
46256 4 mi35 min 60°F3 ft
BAXC1 4 mi77 min SE 2.9 G 4.1
PSXC1 4 mi77 min ESE 1.9 G 2.9
PRJC1 5 mi77 min SSE 1.9 G 2.9
46222 - San Pedro, CA (092) 7 mi42 min 61°F3 ft
46253 11 mi35 min 61°F2 ft
46221 - Santa Monica Bay, CA (028) 21 mi39 min 60°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 23 mi53 min 57°F 59°F1021.1 hPa
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 42 mi35 min WNW 7.8 G 9.7 57°F 60°F1021.2 hPa (+1.5)54°F

Wind History for Angels Gate, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Torrance, Zamperini Field Airport, CA6 mi48 minW 710.00 miOvercast0°F0°F%1021 hPa
Long Beach, Long Beach Airport, CA10 mi42 minN 09.00 miOvercast57°F52°F83%1020.9 hPa
Los Alamitos Army Airfield, CA13 mi39 minN 010.00 miMostly Cloudy56°F51°F84%1021.3 hPa
Hawthorne, Hawthorne Municipal Airport, CA15 mi42 minW 410.00 miOvercast58°F51°F78%1020.9 hPa
Los Angeles, Los Angeles International Airport, CA17 mi42 minWSW 69.00 miMostly Cloudy59°F51°F75%1020.7 hPa
Fullerton, Fullerton Municipal Airport, CA19 mi42 minS 310.00 miMostly Cloudy58°F51°F78%1020.6 hPa
John Wayne-Orange County Airport, CA21 mi42 minN 010.00 miMostly Cloudy59°F50°F72%1020.7 hPa
Los Angeles / USC Campus Downtown, CA21 mi43 minN 010.00 miFair59°F51°F75%1020.5 hPa
Avalon Catalina Airport, CA23 mi44 minW 310.00 miOvercast51°F46°F83%1020.9 hPa
Santa Monica, Santa Monica Municipal Airport, CA23 mi44 minN 010.00 miMostly Cloudy57°F48°F74%1020.7 hPa

Link to 5 minute data for KTOA

Wind History from TOA (wind in knots)
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Last 24hr5E6CalmW9W6Calm33W4W4Calm----------------------SW3W7
1 day agoCalmCalmCalmW3W4W7W6CalmN3Calm----------------------CalmCalm3
2 days agoCalmCalmCalmCalmW7W8W5W7SW7SW7SW3--------------------CalmS5Calm

Tide / Current Tables for Los Angeles, California
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Los Angeles
Click for Map
Tue -- 12:01 AM PST     2.13 feet Low Tide
Tue -- 04:14 AM PST     Moonrise
Tue -- 06:24 AM PST     6.14 feet High Tide
Tue -- 06:55 AM PST     Sunrise
Tue -- 01:45 PM PST     -0.81 feet Low Tide
Tue -- 02:30 PM PST     Moonset
Tue -- 05:13 PM PST     Sunset
Tue -- 08:18 PM PST     3.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.12.32.93.84.85.66.165.44.32.81.40.1-0.6-0.8-0.40.51.62.63.43.73.73.22.7

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
Click for Map
Tue -- 01:13 AM PST     1.28 feet Low Tide
Tue -- 04:13 AM PST     Moonrise
Tue -- 06:55 AM PST     Sunrise
Tue -- 07:24 AM PST     5.10 feet High Tide
Tue -- 02:29 PM PST     Moonset
Tue -- 02:57 PM PST     -0.48 feet Low Tide
Tue -- 05:12 PM PST     Sunset
Tue -- 09:18 PM PST     3.11 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.51.31.41.92.73.74.6554.53.72.61.40.4-0.3-0.5-0.20.41.32.22.83.132.6

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 (12,3,4,5)
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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 numerous 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.