Saturday, July21, 2018 L-36.com


Marine Weather and Tides
Rolling Hills Estates, CA

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7/21/2018 Trying to make page Mobile Friendly

Sunrise 5:56AMSunset 8:02PM Saturday July 21, 2018 8:14 PM PDT (03:14 UTC) Moonrise 3:04PMMoonset 1:27AM Illumination 68% Phase: Waxing Gibbous; Moon at 9 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 Pdt Sat Jul 21 2018
Tonight..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 ft at 9 seconds and sw 2 ft at 18 seconds. Patchy fog after midnight.
Sun..Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 1 to 3 ft. Mixed swell W 2 to 3 ft at 6 seconds and sw 2 ft at 17 seconds. Patchy fog in the morning.
Sun night..W winds 10 to 20 kt with gusts to 25 kt. Strongest western portion. Wind waves 1 to 3 ft. W swell 3 to 4 ft at 5 seconds. Patchy fog after midnight.
Mon..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 4 ft at 7 seconds. S swell 2 ft. Patchy fog in the morning.
Mon night..W winds 15 to 20 kt, becoming 10 to 15 kt after midnight. Wind waves 2 to 3 ft. Mixed swell W 3 to 5 ft at 7 seconds and S 3 ft at 18 seconds. Patchy fog after midnight.
Tue..W winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 3 to 5 ft and S 3 ft. Patchy fog in the morning.
Tue night..W winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 1 to 3 ft. Mixed swell W 3 to 5 ft and S 3 ft.
Wed..W winds 10 to 15 kt. Wind waves 1 to 3 ft. W swell 3 to 5 ft.
Thu..S winds 5 to 10 kt. Wind waves 2 ft or less. W swell 3 to 5 ft.
PZZ600 211 Pm Pdt Sat Jul 21 2018
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 20z...or 1 pm pdt, a 1034 mb surface high was located about 1200 nm nw of point conception, and a 1011 mb thermal low was centered near las vegas. This pattern will change little through Sun 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 220059
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
559 pm pdt Sat jul 21 2018

Synopsis 21 1243 pm.

Hot temperatures are expected through much of next week as high
pressure builds over the area. Night to morning low clouds and fog
is expected across coastal areas, helping temperatures to remain
slightly cooler.

Short term (tdy-tue) 21 249 pm.

***update***
a thunderstorm has formed over the vta mountains west of lockwood
valley. As a result, have added a slight chance of thunderstorms
to this region as well as the typical eastern san gabriel
mountains with steering currents possibly carrying any storms that
develop into the antelope valley.

***from previous discussion***
latest satellite imagery continued to show the mesoscale
convective system falling apart as it moves into southern nevada
early this afternoon. Outflow from this disturbance has sent a
fairly solid shield of high level cirrus clouds over la county
this afternoon. There also have been some buildups across the
typical la and ventura county mountain locations, however with
limited available moisture, showers and thunderstorms are not
anticipated. Low clouds are parked just offshore of the central
coast with better clearing south of point conception. The high
clouds associated with the disturbance are expected to push out of
the region this evening and give way to mostly clear skies. The
one exception being a return of night to morning low clouds to the
coastal plain.

The main story through Tuesday continues to be the building heat.

A very strong 600 dm ridge of high pressure is still expected to
park itself over arizona Monday and stick around through
Wednesday. This combined with offshore flow from the north and
only weak onshore flow to the east will support significant
warming to the region. Sunday is expected to be a transition day
with areas above and inland from the marine layer kicking off the
warming trend with highs already into the 90s to around 100. By
Tuesday 597 dm 500 mb heights overhead will likely squash the
marine layer to the immediate coast at best, with significant
warming just about everywhere. High temperatures Tuesday will
likely be a dangerous 100 to locally 110 coastal valleys and
further inland. Highs in the 90s to near 100 are likely across
inland coastal sections, hottest south of point conception. A heat
warning continues, in effect Monday through Thursday for areas
south of point conception due to the extended heat wave with a
watch to the north of point conception due to lower uncertainty
(see npwlox for the latest).

Advisory sundowner winds are possible as early as Sunday evening
and likely by Monday and Tuesday evenings (sba-smx gradient
peaking near -5 or stronger) focused from gaviota to goleta.

Breezy but likely sub- advisory northerly winds are also likely in
the mountains of la and vta counties near the i-5 corridor by
Tuesday evening. The hot and dry conditions will lead to
widespread elevated fire weather concerns with critical fire
weather conditions possible for areas with sundowner winds where a
fire weather watch is now in effect for Tuesday late afternoon
through Thursday morning (see rfwlox for the latest). The offshore
flow will likely remove low clouds south of point conception by
Tuesday.

Long term (wed-sat) 21 200 pm.

Potential for record breaking heat continues into the long term
with excessive heat watches warnings continuing through Thursday
(again see npwlox for the latest). The aforementioned ridge of
high pressure is expected to gradually break down while shifting
nearly overhead through Thursday before shifting northeast into
the interior. This will support continued hot conditions for
interior areas through Thursday before gradual cooling commences
heading into next weekend. Closer to the surface, gusty and
possibly advisory level sundowner winds may continue for western
portions of the sba south coast into Wednesday or Thursday evening
with breezy but sub- advisory winds also possibly continuing in
the la and vta mountains near the i-5 corridor. Once these winds
relax, models are indicating the development of a moderate eddy
circulation by Thursday or Friday which could bring significant
cooling and moistening of the lower atmosphere to the coastal
plain, especially south of point conception. It may also mark the
return of more widespread night to morning low clouds to these
areas.

If the ridge of high pressure does reposition near the great basin
in nevada, it would open the door for a potential return of
monsoonal moisture to the region.

Aviation 22 0058z.

At 00z, the marine layer depth was around 900 feet deep at klax.

The top of the marine inversion was around 1300 feet with a
temperature near 21 degrees celsius. There was another inversion
up to around 4000 feet.

Moderate-to-high confidence in the current forecast. Higher
confidence for inland terminals, lower confidence for coastal
terminals.

South of point conception, ifr to MVFR conditions will likely
spread into coastal terminals through 13z. Highest confidence in
MVFR conditions south of ksmo. Conditions will improve one
category between 15z and 17z. There is a 20 percent chance that
vfr conditions could delay up to two to four hours later than
forecast.

North of point conception, lifr to ifr conditions will likely
spread into coastal and lower valley terminals through 10z.

Highest chance of lifr conditions expected between 07z and 15z.

Conditions will improve toVFR between 15z and 17z, possibly
lingering along the shoreline into the afternoon on Sunday.

Klax... There is an 80 percent chance of MVFR conditions spreading
into klax between 04z and 09z. There is a 10 percent chance of ifr
conditions between 04z and 07z. There is a 20 percent chance that
vfr conditions could delay until as late as 20z.

Kbur...VFR conditions are expected throughout the period.

Marine 21 123 pm.

Generally good confidence in the current forecast. For the
southern two outer waters zones (pzz673 pzz676), small craft
advisory (sca) winds are not forecast thru sun, then there is a
60%-70% chance of at least SCA winds Sun night thru thu, with a
30% chance of gale force winds at times. For the northern outer
waters zone pzz670, SCA conds are not expected thru Sun night,
then these conditions are likely (60%-70% chance) for Mon thru
thu, with a 20%-30% chance of gale force winds at times Wed and
thu.

For the inner waters N of point conception, SCA conditions are
not expected thru Mon morning, then SCA conds are likely mainly
for each afternoon and evening Mon through thu.

For the inner waters S of pt conception, SCA winds are not expected
for pzz655 thru wed, except for a 40% chance of these winds sun
night for western portions. In the sba channel, pzz650, SCA winds
are not expected through mon, then there is a 40%-50% chance of
sca conds across western portions Mon night thru thu, especially
afternoon and evening hours.

Choppy short-period seas will persist across much of the waters
at least through sun.

A long-period south swell from the southern hemisphere is expected
to move into the waters early next week, with 3-4 ft swell possible.

Fire weather 21 336 pm.

Some residual monsoonal moisture with instability will bring isolated
thunderstorm activity to the mountains of los angeles and ventura
counties and antelope valley through early evening. A strong upper level high
pressure system building over southwest california will bring a long
duration heat wave Sunday through at least Friday, peaking in
strength from Monday through Thursday. High temperatures between 100
and 110 degrees will be common in the valleys, lower mountains, and
deserts during the peak, with humidities likely falling to between
10 and 20 percent by Tuesday. Several nights of gusty sundowner
winds are expected across southern santa barbara county from
Sunday night through Wednesday night when gusts between 30 and 45
mph will be common across western portions, with isolated gusts as
high as 50 mph near gaviota and refugio hills. These persistent
gusty sundowner winds will add to the fire weather threat across
southern santa barbara county, with conditions potentially
reaching critical levels by late Tuesday when humidities fall
between 10 and 20 percent and temperatures potentially climb to
around 100 degrees. The projected sba-smx gradient for Sunday
night is -4.6 mb, and could reach or exceed -5 mb on Monday night,
Tuesday night, and Wednesday night. A fire weather watch has been
issued for the santa barbara south coast and mountains. Breezy
northwest to north conditions are also expected across the
interstate 5 corridor in the los angeles county mountains.

The long duration of hot and dry conditions coupled with dry fuels
will bring an increased risk of large vertical plume growth across
interior sections next week, especially in the foothills and
mountains. Widespread elevated fire weather conditions will occur
next week across southwest california due to the long duration heat
wave. Very warm overnight low temperatures and poor humidity recoveries
in the foothills and mountains will add to the fire weather threat
in those areas.

Lox watches warnings advisories
Ca... Excessive heat watch in effect from Tuesday morning through
Thursday evening for zones 34>38-51. (see laxnpwlox).

Excessive heat warning in effect from 10 am Monday to 8 pm
pdt Thursday for zones 39>41-44>46-52>54-59-88-547. (see laxnpwlox).

Fire weather watch in effect from Tuesday afternoon through
Thursday morning for zones 239-252. (see laxrfwlox).

Pz... None.

Hazard potential outlook (tue-sat)
An extended heat wave is expected Monday through at least
Thursday of next week, especially for inland areas. Widespread
elevated fire weather conditions are expected to develop during
this time. Elevated to high surf is likely Monday through
Wednesday, focused across south facing beaches.

Public... Munroe
aviation... Hall
marine... Sirard
fire... Gomberg
synopsis... Delerme
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
OHBC1 - 9410660 - Los Angeles, CA 0 mi44 min 66°F1014.3 hPa
AGXC1 1 mi44 min WSW 14 G 18 69°F 1014.4 hPa
PFDC1 2 mi44 min SSW 8.9 G 9.9
PFXC1 3 mi44 min SW 5.1 G 6 74°F
PXAC1 3 mi44 min NNW 6 G 8
PSXC1 4 mi44 min WNW 5.1 G 6
BAXC1 4 mi44 min NW 8 G 8.9
46256 4 mi44 min 67°F3 ft
PRJC1 5 mi44 min W 14 G 15
46222 - San Pedro, CA (092) 7 mi44 min 70°F3 ft
46253 11 mi44 min 71°F3 ft
46221 - Santa Monica Bay, CA (028) 21 mi44 min 73°F4 ft
ICAC1 - 9410840 - Santa Monica Pier 23 mi44 min WSW 12 G 16 68°F 73°F1014.7 hPa
46262 39 mi44 min 72°F4 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 42 mi34 min W 16 G 19 68°F 1014.3 hPa68°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 mi84 minW 15 G 1810.00 miA Few Clouds72°F64°F78%1013.9 hPa
Long Beach, Long Beach Airport, CA10 mi81 minWNW 1110.00 miFair78°F57°F48%1013.9 hPa
Hawthorne, Hawthorne Municipal Airport, CA15 mi81 minW 1310.00 miFair74°F64°F74%1014.1 hPa
Los Angeles, Los Angeles International Airport, CA17 mi81 minWSW 1610.00 miPartly Cloudy73°F64°F74%1013.9 hPa
Fullerton, Fullerton Municipal Airport, CA19 mi81 minW 910.00 miMostly Cloudy80°F57°F45%1013.4 hPa
Los Angeles / USC Campus Downtown, CA21 mi87 minVar 310.00 miFair76°F63°F64%1013.6 hPa
John Wayne-Orange County Airport, CA21 mi81 minSW 510.00 miPartly Cloudy76°F57°F54%1013.8 hPa
Santa Monica, Santa Monica Municipal Airport, CA23 mi83 minWSW 810.00 miFair70°F63°F79%1014 hPa
Avalon Catalina Airport, CA23 mi83 minWSW 1010.00 miFair64°F60°F87%1014.8 hPa

Wind History from TOA (wind in knots)
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Last 24hr--------------------W9W9W6W11W12W14W15W15W18W17
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1 day ago--------------------W6W4W7W8W13W14W13W15W15W6W17W16W16W15
2 days ago--------------------CalmCalm45W7W10W10W14W15W15W14W13W11W10

Tide / Current Tables for Los Angeles, California
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Los Angeles
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Sat -- 12:16 AM PDT     1.11 feet Low Tide
Sat -- 01:26 AM PDT     Moonset
Sat -- 05:57 AM PDT     Sunrise
Sat -- 06:14 AM PDT     3.43 feet High Tide
Sat -- 11:18 AM PDT     1.95 feet Low Tide
Sat -- 03:03 PM PDT     Moonrise
Sat -- 06:01 PM PDT     5.50 feet High Tide
Sat -- 08:01 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.11.21.62.22.83.23.43.332.62.2222.43.13.94.75.35.55.34.73.72.71.7

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
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Sat -- 01:25 AM PDT     0.66 feet Low Tide
Sat -- 01:26 AM PDT     Moonset
Sat -- 05:56 AM PDT     Sunrise
Sat -- 07:10 AM PDT     2.78 feet High Tide
Sat -- 12:27 PM PDT     1.16 feet Low Tide
Sat -- 03:02 PM PDT     Moonrise
Sat -- 07:00 PM PDT     4.49 feet High Tide
Sat -- 08:00 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.70.71.11.62.22.62.82.72.41.91.51.21.21.52.22.93.74.34.54.33.83.12.2

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 (23,6,7,8)
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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.