Sunday, July5, 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 5:47AMSunset 8:08PM Sunday July 5, 2020 1:13 PM PDT (20:13 UTC) Moonrise 8:59PMMoonset 6:08AM Illumination 100% Phase: Full Moon; Moon at 15 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- 902 Am Pdt Sun Jul 5 2020
Today..Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 8 seconds and S 3 ft at 15 seconds. Patchy fog in the morning.
Tonight..SW winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 3 to 5 ft at 8 seconds and S 3 ft at 15 seconds. Patchy dense fog with vsby 1 nm or less after midnight.
Mon..Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft at 8 seconds and S 3 ft at 15 seconds. Patchy dense fog with vsby 1 nm or less in the morning.
Mon night..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 3 to 5 ft at 9 seconds. Patchy dense fog with vsby 1 nm or less after midnight.
Tue..SE winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 3 to 4 ft at 8 seconds. Patchy dense fog with vsby 1 nm or less in the morning.
Tue night..W winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 3 to 4 ft at 9 seconds. Patchy fog.
Wed..SW winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft. Patchy fog.
Thu..W winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft. Patchy fog.
PZZ600 902 Am Pdt Sun Jul 5 2020
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 15z, or 8 am pdt, a 1028 mb high pressure center was located 900 nm west of eureka and a 1003 mb thermal low was centered over southern nevada. There will be an extended period of strong nw winds across the coastal waters through at least Tue night, along with large steep seas.


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 051910 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 1210 PM PDT Sun Jul 5 2020

SYNOPSIS. 05/1202 PM.

After a very warm Monday, temperatures will cool Tuesday through Thursday with a gradual increase in coastal low clouds and fog. Gusty Sundowner winds will be likely tonight and Monday night. For Friday through next weekend, building high pressure will bring a return of heat to the area.

SHORT TERM (TDY-TUE). 05/1138 AM.

Overall, 12Z models in good synoptic agreement through the short term period. At upper levels, broad trough will develop over the West Coast through Tuesday then ridge will slowly begin to rebuild over the area on Wednesday. Near the surface, moderate onshore flow will continue with some northerly offshore gradients the next couple of nights.

Forecast-wise, main concern in the short term is the winds. Moderate onshore gradients will generate gusty southwesterly winds across interior sections each afternoon through Wednesday. At this time, these southwesterly winds will remain below advisory levels. Additionally, there is a concern about Sundowner winds the next couple of evenings. Models indicate SBA-SMX gradient ranging between -3.0 to -3.5 mb the next three evenings with marginal upper level support. So, will anticipate some gusty northerly winds through/below the Santa Ynez Range (especially west of Goleta), but do not anticipate widespread advisory-level winds. Also, there will be some gusty northerly winds through the I-5 Corridor, but these winds will also remain below advisory levels.

Otherwise, the short term period should be rather benign. Main challenge will be forecasting extent of marine layer stratus. Currently, marine inversion is quite shallow (under 1000 feet deep). Over the next three evenings, will anticipate a slight deepening of the inversion and a gradual increase in stratus coverage due to continued onshore gradients and slight lowering of H5 heights. Any stratus/fog tonight and Monday night should be confined to the coastal plain (with some dense fog likely) with stratus pushing into the lower coastal valleys Tuesday night. Dissipation of stratus each day should be pretty good. Other than any potential stratus, skies should remain mostly clear.

As for temperatures, today will be the warmest day in the short term. A cooling trend is anticipated Monday through Wednesday with most areas falling to around seasonal normals by Wednesday.

LONG TERM (WED-SAT). 05/1156 AM.

For the extended, 12Z models continue to exhibit good synoptic agreement. At upper levels, high pressure builds near the Four Corners through the period. Near the surface, weak to moderate onshore flow will prevail with a bit of northerly offshore gradients thrown in.

Forecast-wise, a very classic Summertime pattern is on tap for the area in the extended period. As the upper level high develops near the Four Corners area, the marine inversion will become more shallow from day-to-day and the areal extent of stratus/fog will follow suit each night (with little, if any, stratus by Saturday and Sunday). Other than any potential stratus, will expect mostly clear skies through the period. However, will definitely have to watch exactly where the upper level high develops as some monsoonal moisture could move into the area this weekend. So, the mostly clear forecast may need to be adjusted in a few days, depending on how things develop.

As for temperatures, increasing thicknesses/H5 heights and less marine influence will bring a warming trend to the area with Saturday/Sunday likely the warmest days (valleys in the mid to upper 90s and interior sections in the low 100s). In fact, would not be surprised to see temperatures actually a little warmer than currently forecast. Will have to watch the situation closely over the next few model runs.

AVIATION. 05/1908Z.

At 1730z at KLAX . The inversion was surface based. The top of the inversion was around 3900 feet with a temperature of about 24 degrees Celsius.

Overall . Moderate to high confidence in the current TAFs. IFR/MVFR conditions will return to KLAX, KLGB, and KSMO 09z-16z. There is a less than ten percent chance of IFR/MVFR conditions at KBUR and KVNY 09z-16z. Otherwise and elsewhere, VFR conditions will prevail.

KLAX . Moderate confidence in the current TAF. IFR/MVFR conditions will return 09z-16z. Otherwise, VFR conditions will prevail throughout the forecast period. There will not be any east winds greater than 8 kts.

KBUR . High confidence in the current TAF. There is a less than ten percent chance of IFR/MVFR conditions 09z-16z. Otherwise, VFR conditions will prevail throughout the forecast period.

MARINE. 05/736 AM.

For the northern and central outer waters zones (PZZ670/673), Gale force winds. mainly this afternoon thru Mon night. There is a 25% chance that Gales will continue thru Tue night, but if not, Small Craft Advisory (SCA) level winds and seas will. SCA level winds are likely Tue night/Wed. There is a 40% chance of SCA level winds Thu.

For the southern outer waters zone (PZZ676), SCA level winds and seas will develop today, then continue thru Tue night, There is a 30% chance of Gale force winds Mon/Mon night, northwest of San Nicolas Island. There is a 40% chance of SCA level winds Wed thru Thu.

For the inner waters north of Pt. Sal, SCA level winds will develop this afternoon and continue into tonight. There will be SCA level winds during the afternoon and evening hours Mon and Tue. Otherwise, seas will be at or above SCA thresholds later today thru Tue evening. There is a 30% chance of SCA conds Wed thru Thu.

For the inner waters south of Pt. Conception, winds and seas will remain below SCA levels thru Thu. The exception will be in western Santa Barbara Channel, with SCA level winds likely during the afternoon thru late night hours today and Mon. There is a 35% chance of SCA conds in western portions of the SBA Channel during the late afternoon thru late evening hours Tue thru Thu.

Patchy dense fog, with visibility 1NM or less, will affect the waters south of Pt Conception in the night/morning hours thru Tue.

There will be dangerous seas across much of the waters thru Tue. There will be a combination of a long period south swell creating large waves nearshore and hazards to drifting boaters, and a steep large short period swell.

BEACHES. 05/739 AM.

High surf and strong rip currents will continue through early Monday on Southern California beaches. A long-period south swell will peak today at 3 to 4 feet at 17 seconds. High surf of 5 to 8 feet will occur on exposed south and southwest facing beaches of Los Angeles and Ventura Counties, and 8 to 11 feet on exposed Central Coast beaches. The Santa Barbara south coast will have minimal affects from this swell due to blockage from the Channel Islands, but local sets to 5 feet and hazardous rip currents will occur near Rincon Point.

The high tides this evening will be quite high, between 6.5 and 7 feet. High tides will be between 10 and 1030 PM PDT this evening. Within a couple of hours on either side of high tide, there will likely be minor coastal flooding of beaches and harbor walkways.

Pay attention to beach closures this weekend. In addition to large surf and dangerous rip currents, dangerous breaking waves from long period waves, have a history of ocean rescues and drownings. Stay off the rocks and jetties near the water's edge.

FIRE WEATHER. 05/601 AM.

Hot and dry conditions are expected across interior areas today and Monday, where humidities in the single digits and teens will be common. The driest air will be focused across the Antelope Valley, mountains, and interior valleys of SLO County where humidities as low as 5 percent can be expected. In addition, locally gusty southwest to northwest winds (gusting between 25 and 40 mph) will continue across interior sections, strongest in the Antelope Valley. Warm and dry conditions are also expected to linger through the nighttime hours in the foothills and mountains. The combination of hot temperatures, low humidities, locally gusty winds, and drying fuels will bring elevated fire weather conditions to interior areas today through Monday.

Elevated fire weather conditions are also expected today into Monday across the western portions of the Santa Barbara south coast and adjacent foothills, mainly late afternoon and evening hours. These areas can expect gusty sundowner winds, mainly from Gaviota to San Marcos Pass where wind gusts of 35 to 45 mph will be common. The sundowner wind conditions will also bring warm and dry conditions, with humidities lowering into the teens and 20's across foothill areas, while temperatures climb to around 90 degrees.

LOX WATCHES/WARNINGS/ADVISORIES. CA . High Surf Advisory in effect until noon PDT Monday for zones 34-35-40-41-87. (See LAXCFWLOX). PZ . Small Craft Advisory in effect until 3 AM PDT Wednesday for zones 645-676. (See LAXMWWLOX). Small Craft Advisory in effect until 3 AM PDT Monday for zone 650. (See LAXMWWLOX). Gale Warning in effect until 3 AM PDT Tuesday for zones 670-673. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (TUE-SAT).

No significant hazards expected.

PUBLIC . Thompson AVIATION . Kj MARINE . DB/Kj BEACHES . DB/Kj FIRE . Gomberg/Kaplan SYNOPSIS . RAT

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OHBC1 - 9410660 - Los Angeles, CA 0 mi73 min 65°F1014 hPa (-0.7)
AGXC1 1 mi109 min SSW 8.9 G 9.9
PFDC1 2 mi109 min S 8.9 G 12
PFXC1 3 mi73 min SSW 8 G 8.9
PXAC1 3 mi109 min S 6 G 8
46256 4 mi47 min 64°F5 ft
BAXC1 4 mi109 min ESE 7 G 8
PSXC1 4 mi73 min SSE 6 G 8.9
PRJC1 5 mi73 min SW 5.1 G 5.1
46222 - San Pedro, CA (092) 7 mi53 min 71°F3 ft
46253 11 mi47 min 69°F4 ft
46221 - Santa Monica Bay, CA (028) 21 mi50 min 68°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 23 mi73 min WSW 6 G 7 67°F 69°F1014 hPa (-0.5)
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 41 mi43 min SW 3.9 G 5.8 67°F 71°F1013.7 hPa63°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 mi86 minWNW 610.00 miClear81°F64°F58%1013.2 hPa
Long Beach, Long Beach Airport, CA10 mi80 minSSW 610.00 miFair82°F55°F41%1013 hPa
Los Alamitos Army Airfield, CA13 mi75 minVar 47.00 miFair77°F59°F54%1013.5 hPa
Hawthorne, Hawthorne Municipal Airport, CA15 mi80 minW 76.00 miFair with Haze83°F62°F49%1012.9 hPa
Los Angeles, Los Angeles International Airport, CA17 mi80 minWSW 86.00 miFair with Haze78°F62°F58%1013.1 hPa
Fullerton, Fullerton Municipal Airport, CA19 mi80 minN 010.00 miFair89°F54°F30%1012.4 hPa
John Wayne-Orange County Airport, CA21 mi80 minSSW 1010.00 miFair84°F57°F41%1012.7 hPa
Los Angeles / USC Campus Downtown, CA21 mi81 minN 07.00 miFair89°F53°F29%1012.2 hPa
Avalon Catalina Airport, CA23 mi82 minVar 310.00 miFair83°F53°F36%1012.2 hPa
Santa Monica, Santa Monica Municipal Airport, CA23 mi82 minSW 64.00 miFair with Haze80°F62°F54%1013.1 hPa

Link to 5 minute data for KTOA

Wind History from TOA (wind in knots)
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Last 24hrW18W19W12------------------------------CalmCalmCalmCalmW6W10
1 day agoW17
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W17W17------------------------------CalmCalmCalmW5W8W15
2 days agoSE3W13W14------------------------------W8W7W10W11W12W15

Tide / Current Tables for Los Angeles, California
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Los Angeles
Click for Map
Sun -- 04:35 AM PDT     -1.26 feet Low Tide
Sun -- 05:48 AM PDT     Sunrise
Sun -- 06:08 AM PDT     Moonset
Sun -- 11:10 AM PDT     4.00 feet High Tide
Sun -- 03:42 PM PDT     2.26 feet Low Tide
Sun -- 08:07 PM PDT     Sunset
Sun -- 08:58 PM PDT     Moonrise
Sun -- 09:56 PM PDT     6.59 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.32.61-0.4-1.1-1.2-0.60.41.72.93.743.93.42.82.42.32.73.44.55.56.36.66.2

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
Click for Map
Sun -- 05:47 AM PDT     -0.76 feet Low Tide
Sun -- 05:47 AM PDT     Sunrise
Sun -- 06:07 AM PDT     Moonset
Sun -- 12:10 PM PDT     3.32 feet High Tide
Sun -- 04:54 PM PDT     1.36 feet Low Tide
Sun -- 08:06 PM PDT     Sunset
Sun -- 08:57 PM PDT     Moonrise
Sun -- 10:56 PM PDT     5.47 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.83.82.51.20.1-0.6-0.7-0.40.41.42.433.33.22.721.51.41.62.43.44.45.25.5

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 (16,3,4,5)
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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 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.