Friday, July10, 2020
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Marine Weather and Tides
El Segundo, 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 5:49AMSunset 8:08PM Friday July 10, 2020 9:06 AM PDT (16:06 UTC) Moonrise 11:59PMMoonset 11:06AM Illumination 73% 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- 240 Am Pdt Fri Jul 10 2020
Today..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.
Tonight..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. S swell 2 ft at 12 seconds. Patchy fog.
Sat..Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. S swell 2 ft at 12 seconds. Patchy fog in the morning.
Sat night..W winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 ft at 8 seconds and S 2 ft at 12 seconds. Patchy fog after midnight.
Sun..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. S swell 3 to 4 ft at 13 seconds. Patchy fog in the morning.
Sun night..W winds 5 to 10 kt. Wind waves 2 ft or less. S swell 3 to 4 ft at 12 seconds. Patchy fog after midnight.
Mon..SW winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and S 2 to 4 ft. Patchy fog.
Tue..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and S 2 ft. Patchy fog.
PZZ600 240 Am Pdt Fri Jul 10 2020
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 09z, or 2 am pdt, a 1024 mb high was located around 800 nm west of san francisco, and a 1007 mb thermal low was over nevada. There will be an extended period of moderate to strong nw winds across the outer coastal waters through the period, mainly nw of point conception. Hazardous steep seas are also expected.


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 101551 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 851 AM PDT Fri Jul 10 2020

SYNOPSIS. 10/227 AM.

High pressure over the Four Corners region will expand westward through Sunday. This will bring a warming trend to Southwest California with temperatures well above normal on Saturday and Sunday. The high pressure will weaken early next week, bringing cooler temperatures to most areas, and a return of coastal low clouds and fog by mid-week.

SHORT TERM (TDY-SUN). 10/845 AM.

The marine inversion early this morning ranged from near surface- based at VBG to around 1200 ft deep at LAX. Low clouds and fog covered the much of the coast especially S of Point Conception, and extended locally into some of the vlys in VTU/L.A. Counties. The low clouds are expected to clear to or off the coast by mid to late morning, with some low clouds possibly lingering at a few beaches into the afternoon. Otherwise, mostly sunny skies with a few hi clouds at times will prevail across the forecast area today.

The NAM was forecasting pressure gradients from LAX-DAG to be around +7.3 mb late this afternoon. These good onshore gradients will help to bring breezy to gusty S to W winds to the region this afternoon into early evening, with the highest gusts expected in the Antelope Valley and adjacent foothills.

Temps across the forecast area today are expected to warm to about 3- 8 deg above normal away from the immediate coast, with the warmest vlys and lower mtns reaching the 90s to around 100, except 100-104 in the Antelope Vly.

A large and increasingly strong upper level high pressure system will build over AZ/NM into the weekend. Southern CA will be under the western periphery of the upper level high, with H5 heights over southwestern CA increasing to 593-595 dm today, and to 596-597 dm on Sat before lowering slightly to around 594-595 dm for Sun.

The strong upper level ridging into srn CA will shrink the marine layer depth down to about 600 ft or less tonight thru Sun morning. Marine layer low clouds and fog should only affect portions of the SBA County Central coast and L.A. County coast tonight and Sat morning, and perhaps just the L.A. County coast late Sat night into Sun morning. Otherwise, mostly clear skies can be expected thru Sun with just a few hi clouds at times.

Boundary layer, 950 mb and 850 mb temps will warm significantly thru Sun as well. As a result, surface temps will warm significantly thru the period, with very warm overnight lows in the 70s to around 80 this weekend especially in the foothills, lower mtns and deserts. Highs will be about 4-10 deg above normal on Sat, and about 6-12 deg above normal on Sun. The warmest vlys and lower mtns should reach the upper 90s to 104 Sat, and 100-106 on Sun. The Antelope Valley will be even hotter each day, and could reach as high as 105-110 degrees on Sun.

Due to the hot daytime temps and very warm overnight lows, a Heat Advisory is in effect for the SLO County interior valleys and mtns, the Cuyama Vly, and the L.A. County vlys and mtns from late Sat morning thru early Sun evening. In addition, an Excessive Heat Watch is in effect for the Antelope Valley for Sun. Please see the latest Non-Precipitation Weather Message (LAXNPWLOX) for further details on the Heat Advisories and Excessive Heat Watch.

Onshore gradients (LAX-DAG) are forecast by the NAM to weaken Sat to +6.7 mb in the afternoon, then increase to +8.2 mb Sun afternoon. Breezy S to W winds are expected to persist for many areas during the afternoon and evening hours. Light offshore flow will be possible night and morning hours over SLO/SBA Counties and interior VTU County as well thru the weekend.

LONG TERM (MON-THU). 10/312 AM.

Both the GFS and the EC agree that the upper high will be pushed to the south and east on Monday by a large and broad trof moving into the PAC NW. From Tuesday through Thursday weak troffing will be over the west coast. Hgts will fall from 592 DM Monday to 588 DM Wed and Thu.

Most importantly there will be a jump in onshore flow both to the north and the east. Afternoon grads will be near 9 mb to the east and between 6 and 7 mb to the north. This increase in onshore flow along with the decreasing hgts and cyclonic flow will allow the marine layer cloud pattern to reform. Such strong afternoon grads may prevent clearing at some of the beaches and will also bring stronger than normal westerly winds to the area.

Max temps will fall each day Mon through Wed and then change little on Thu. Tuesday will see the biggest drop in temps: 3 to 7 degrees. Max temps will be below normal Wed and Thu.

AVIATION. 10/1216Z.

At 1100Z at KLAX . The marine layer was 700 feet deep. The top of the inversion was near 2400 feet with a temperature of 26 degrees Celsius.

Moderate confidence in coastal TAFs through 21Z, and good confidence afterward and for remaining TAFs. There is a 30% chance that coastal sites south of Point Conception may briefly lower into LIFR. Forecast flight cat changes excluding the VFR transition could be off by +/- 1 hour. VFR transition could be off by +/- 2 hours.

KLAX . Moderate confidence in TAF through 21Z. There is a 30% chance that cigs may lower to LIFR briefly. VFR transition could occur anytime between 18Z and 22Z. Good confidence that any east wind component will be 3 KT or less.

KBUR . High confidence in CAVU TAF.

MARINE. 10/849 AM.

Across the outer waters . Winds will be elevated and gusty to Small Craft Advisory (SCA) level across the northern outer waters beginning today and across the remainder of the outer waters beginning Saturday afternoon. The elevated winds will continue through Monday, mostly in the afternoon and evening hours. Otherwise and elsewhere, conditions will remain below SCA level.

Across the nearshore waters of the Central Coast . There is a thirty percent chance of SCA winds Saturday night through Sunday night, otherwise conditions will remain below SCA level.

Across the inner waters south of Point Conception . Winds will increase to SCA level Saturday through Monday from Point Conception to Point Mugu, mostly in the afternoon and evening hours. Otherwise, conditions will be below SCA level.

Steep, hazardous seas will develop across the coastal waters through the coming week.

LOX WATCHES/WARNINGS/ADVISORIES. CA . Heat Advisory in effect from 11 AM Saturday to 8 PM PDT Sunday for zones 37-38-46-51-54-88-547. (See LAXNPWLOX). Excessive Heat Watch in effect from Sunday morning through Sunday evening for zone 59. (See LAXNPWLOX). PZ . Small Craft Advisory in effect until 3 AM PDT Saturday for zone 670. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (SUN-THU).

Hot temperatures will affect the coastal and interior valleys of southwest California Sunday through Monday. Moderate to high heat risk will be possible. Additionally, there will be elevated fire weather conditions away from the coast.

PUBLIC . Sirard/Rorke AVIATION . Stewart MARINE . Kj SYNOPSIS . Smith

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 8 mi49 min SW 1 G 2.9 65°F 69°F1016.2 hPa
46221 - Santa Monica Bay, CA (028) 11 mi44 min 69°F3 ft
PXAC1 13 mi109 min SE 4.1 G 5.1
BAXC1 14 mi103 min ESE 5.1 G 5.1
PSXC1 15 mi49 min SSE 5.1 G 7
OHBC1 - 9410660 - Los Angeles, CA 16 mi49 min 66°F1016.5 hPa
PFDC1 16 mi109 min E 5.1 G 7
PFXC1 16 mi49 min SSE 6 G 7
AGXC1 17 mi103 min SE 6 G 7
PRJC1 18 mi49 min SSE 5.1 G 7
46256 19 mi41 min 67°F2 ft
46222 - San Pedro, CA (092) 21 mi47 min 70°F2 ft
46253 27 mi41 min 70°F3 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 34 mi147 min SE 5.8 G 7.8 62°F 69°F1015.4 hPa59°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 mi74 minN 04.00 miMostly Cloudy with Haze67°F61°F81%1015.3 hPa
Hawthorne, Hawthorne Municipal Airport, CA5 mi74 minWNW 34.00 miOvercast with Haze67°F60°F79%1015.4 hPa
Santa Monica, Santa Monica Municipal Airport, CA8 mi76 minN 04.00 miFog/Mist64°F61°F90%1015.4 hPa
Los Angeles / USC Campus Downtown, CA11 mi75 minN 03.00 miOvercast with Haze67°F61°F81%1015.1 hPa
Long Beach, Long Beach Airport, CA16 mi74 minN 06.00 miOvercast with Haze67°F62°F84%1015.4 hPa
Burbank - Bob Hope Airport, CA20 mi74 minN 08.00 miFair66°F59°F78%1014.3 hPa
Van Nuys, Van Nuys Airport, CA21 mi76 minN 07.00 miFair69°F59°F70%1014.6 hPa
Los Alamitos Army Airfield, CA22 mi69 minNE 36.00 miFog/Mist70°F60°F73%1015.9 hPa
Fullerton, Fullerton Municipal Airport, CA24 mi74 minN 08.00 miA Few Clouds71°F62°F73%1015 hPa
Los Angeles, Whiteman Airport, CA24 mi67 minN 010.00 miClear68°F55°F64%1016.9 hPa

Link to 5 minute data for KLAX

Wind History from LAX (wind in knots)
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Last 24hrW5W8W10
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1 day agoSE4S4SW9W10W9W10SW9W10W11W11W9W8W7W5W5W5W4Calm3Calm3CalmCalmSW4
2 days agoCalmW8W9W11W12W10W12W12SW12W10W9W6S3W6W7NW4N43CalmCalm3SE3E8E5

Tide / Current Tables for El Segundo, Santa Monica Bay, California
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El Segundo
Click for Map
Fri -- 12:55 AM PDT     4.57 feet High Tide
Fri -- 05:51 AM PDT     Sunrise
Fri -- 08:08 AM PDT     0.43 feet Low Tide
Fri -- 11:06 AM PDT     Moonset
Fri -- 03:10 PM PDT     3.97 feet High Tide
Fri -- 08:06 PM PDT     Sunset
Fri -- 08:26 PM PDT     2.65 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.44.64.43.832.11.30.70.40.61.11.82.63.33.843.93.63.22.92.72.72.93.3

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Fri -- 12:43 AM PDT     4.70 feet High Tide
Fri -- 05:51 AM PDT     Sunrise
Fri -- 07:57 AM PDT     0.46 feet Low Tide
Fri -- 11:06 AM PDT     Moonset
Fri -- 02:57 PM PDT     4.05 feet High Tide
Fri -- 08:07 PM PDT     Sunset
Fri -- 08:10 PM PDT     2.74 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.64.74.43.8321.20.60.50.71.222.83.53.94.13.93.63.22.92.72.83.13.4

Weather Map
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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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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.