Monday, April6, 2020
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Marine Weather and Tides
Moorpark, 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 6:33AMSunset 7:21PM Monday April 6, 2020 8:41 AM PDT (15:41 UTC) Moonrise 6:00PMMoonset 6:01AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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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PZZ650 East Santa Barbara Channel From Pt. Conception To Pt. Mugu Ca Including Santa Cruz Island- 252 Am Pdt Mon Apr 6 2020
Today..W winds 5 to 10 kt. Wind waves 2 ft or less. W swell 3 to 4 ft at 9 seconds. Chance of showers. Slight chance of tstms in the afternoon.
Tonight..W 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 9 seconds. Slight chance of showers in the evening.
Tue..W winds 5 to 10 kt, becoming nw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 9 seconds. Slight chance of tstms.
Tue night..NW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 3 ft at 10 seconds. Slight chance of tstms in the evening. Chance of showers.
Wed..NW winds 10 to 15 kt, becoming W 10 to 20 kt with gusts to 25 kt in the afternoon. Combined seas 3 to 4 ft dominant period 8 seconds. Chance of showers.
Wed night..W winds 15 to 25 kt, becoming nw 10 to 15 kt after midnight. Combined seas 3 to 5 ft dominant period 7 seconds. Slight chance of showers.
Thu..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 3 ft. Slight chance of showers.
Fri..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 ft.
PZZ600 252 Am Pdt Mon Apr 6 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 1002 mb low was about 100 nm sw of eureka with a cold front extending through the state and then out from sba county and to the sw. This storm system will affect the coastal waters through Thursday. There is a slight chance of Thunderstorms over all the waters through Wednesday.


7 Day Forecast for Marine Location Near Moorpark, CA
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location: 34.28, -118.89     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 061508 AFDLOX

Area Forecast Discussion . UPDATED National Weather Service Los Angeles/Oxnard CA 808 AM PDT Mon Apr 6 2020

SYNOPSIS. 06/256 AM.

Significant rain and mountain snow will impact the region today with showers lingering through Thursday. There is a slight chance of thunderstorms today through Tuesday. For Friday into the weekend, dry and warmer conditions are expected.

SHORT TERM (TDY-WED). 06/807 AM.

***UPDATE***

The focus of the storm is over Ventura and Los Angeles Counties right now. Heavy rainfall rates, near to one inch per hour, have been seen along the foothills and a flood advisory remains in effect until 0845 for Los Angeles County. Rates are much less along the coast, at about one quarter inch per hour. Downtown LA has received nearly an inch of rain in the last 24 hours. Still expecting rain to turn to showers this afternoon with a slight chance of isolated thunderstorms. Most impactful will be the dropping snow level late tonight and Tuesday morning where the lower snow levels will likely bring snow to Interstate 5 near the Grapevine.

***From Previous Discussion***

Very interesting non April like weather on tap for the next three days.

Currently a cold front is draped over SLO and SBA counties and is moving slowly to the east. There is a large area of precipitation ahead of the front. The winds ahead of the front are almost due south and this has greatly enhanced the rainfall totals on the south facing coastal slopes which are receiving 4 to 5 times greater rainfall amounts than the beaches. So far the SBA south coast has been the big winner with rainfall where the coasts have received between .75 and 1.5 inches of rain while the foothills and south facing slopes of the Santa Ynez range have collected 2 to 5.5 inches so far.

Synoptically there was a 1004 mb SFC low 60 miles off the coast half way between San Francisco and Eureka. An unseasonably cold 536 DM upper low was 150 miles west of Monterey.

The heaviest rain is currently over eastern SBA county and western VTA counties. It will continue to march to the east and the heaviest rain will enter LA county a few hours before dawn.

The rain has turned to showers SLO and nrn SBA counties in the wake of the front. The front will exit VTA county shortly after dawn and will be out of LA county around noon.

There is enough low level lift, jet dynamics and upper level diffluence to create a slight chc of TSTMs just ahead of and with the front. That said the front, so far, has not produced any TSTMs and its looking more likely the main TSTM threat will be with the unstable air behind the front.

For the rest of the day the coasts of LA and VTA county will see about .50 to 1.00 of an inch of rain (down from earlier estimates because this system really needs a little orographic help), the vlys of LA and VTA should see an additional 1.00 to 1.50 inches of rain while the coastal slopes will see 2 to 5 more inches of rain. Due to the showery nature of the precipitation over SLO and SBA counties additional rainfall totals will be less homogeneous but will, on average, range form a third to three quarters of an inch.

The upper low will slowly spin to the south and will be just to the west of Pt Conception by Tuesday afternoon. This will keep the area under SW cyclonic flow. The showery regime will continue although it will be most focused on areas south of Pt Conception which will have the most conducive upper level pattern. There will be just enough instability to keep a slight risk of TSTMs going.

Additional rainfall Mon night and Tue should be around 0.05 to 0.25 inch for the coast and vlys, and 0.20 to 0.50 inch in the mtns, except up to 1.00 inches in the eastern San Gabriel mtns.

Snow levels will 5500 feet this morning and will then, in the wake of the cold front drop to 5000-5500 feet this afternoon, and then to 4000-4500 feet by late tonight. There will likely be significant snow accumulations above 6000 feet. A Winter Storm Warning is in effect for the VTA/LA county mtns through Tuesday afternoon. Wind gusts up to 45 to 55 mph are expected in the high mountains today. Snow accumulations of 15 to 30 inches or more are possible above 6000 feet, and about 4 to 12 inches between 4500 and 6000 feet. The bulk of this snow will fall today. In addition, lower snow levels late tonight and Tue morning will likely bring snow to Interstate 5 near the Grapevine. Please see the latest Winter Weather Message (LAXWSWLOX) for further details.

The EC and GFS disagree on the exact timing and positioning but both generally agree that the upper low will swing to the east and move along the CA/Mex border. This movement is forecast to bring a significant uptick in rainfall due to the wrap around cyclonic flow. An additional half inch of rain will likely fall across the interior from the Cuyama Vly the to Antelope Vly including the northern sections of the SBA/VTA/LA mtns. A notable exception will be the eastern San Gabriels which could see an additional inch and a half of rain. More snow is expected above 5000 feet Tue night and Wed, with 3 to 6 locally 12 inches possible especially above 5500 feet.

Max temps all three days will be 5 to 10 degrees blo normal across the coasts. 10 to 15 degrees blo normal for the vlys and interior.

LONG TERM (THU-SUN). 06/306 AM.

Thursday's forecast is still very much in limbo. It will either be partly cloudy and dry with the GFS soln of the upper low over New Mexico or Partly to mostly cloudy with scattered showers with the EC soln of the upper low over Las Vegas. Ensembles are not much help as they stick close to their respective operational mdl. EC has been doing a better job of late and biased the forecast to its cloudier and wetter fcst. If the EC does verify the greatest threat of rain and highest rainfall totals will again be across the interior due to the NNE flow pattern.

Weak ridging will dry the area out on Friday and persist into Saturday. Brisk dry NW flow sets up over the state on Sun as the state finds itself between a long wave trof to the east and an east Pac Ridge.

Cst and vly temps will remain mired in the lower to mid 60s on Thursday and Friday. There will be about 5 degrees of warming on Saturday and little change in the temps for Sunday.

AVIATION. 06/1240Z.

At 12Z, there was no marine inversion at KLAX.

Overall, low confidence in TAFs. Steady rain will continue to push through the area, tapering off from west to east later this morning to this afternoon. Behind this region of steady rain, there will be a chance of showers everywhere through this afternoon and evening. Therefore low confidence in timing of rain and associated flight categories. During periods of rain, MVFR conditions will be most likely, but IFR conditions may occur in heavier cells. There will be a slight chance of thunderstorms for all sites through the TAF period.

KLAX . Low confidence in 12Z TAF. Good confidence in MVFR conditions continuing, but there is a chance of IFR conditions during heavier rain. Southeast winds up to 8 kt will likely continue through 18Z with a 40% chance they may exceed 10 kt.

KBUR . Low confidence in 12Z TAF. Good confidence in MVFR conditions continuing, but there is a chance of IFR conditions during heavier rain.

MARINE. 06/236 AM.

Overall, moderate to high confidence in current forecast. The south winds associated with the passing cold front have weakened to below Small Craft Advisory (SCA) level across all the waters except for the waters inside the Southern California Bight. There may be some lingering SCA level short-period seas generated by the winds over the waters from Point Conception to San Nicolas Island early this morning, but high confidence that they will quickly subside below advisory level the next few hours. Gusty south winds will remain over the waters along the LA/Orange County coast through the morning, with a 40% chance of SCA level seas lingering into the afternoon.

TSTMs will be possible across all of the waters through Tuesday evening. Any thunderstorms will be capable of producing brief heavy rain, small hail, rough seas, and possibly waterspouts.

High confidence that winds and seas will remain below SCA level from Monday afternoon through next week. However, there is a 40% chance of SCA level winds over the outer waters from Tuesday night through Wednesday.

LOX WATCHES/WARNINGS/ADVISORIES. CA . Winter Storm Warning in effect until 5 PM PDT Tuesday for zones 53-54. (See LAXWSWLOX). PZ . Small Craft Advisory in effect until 3 PM PDT this afternoon for zone 655. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (WED-SUN).

Numerous rain and mountain snow showers are expected Wednesday. Showers will decrease on Thursday. Impacts will include minor urban flooding and difficult mountain travel.



PUBLIC . Rorke/jld AVIATION . Stewart MARINE . Stewart SYNOPSIS . RAT

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 28 mi54 min S 13 G 14 56°F 61°F1011.2 hPa
46221 - Santa Monica Bay, CA (028) 32 mi46 min 60°F6 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 37 mi32 min W 14 G 18 56°F 60°F1010.7 hPa56°F
NTBC1 - Santa Barbara, CA - 9411340 43 mi66 min W 1.9 G 4.1 52°F 1010.1 hPa
BAXC1 49 mi108 min SE 19 G 22
PXAC1 49 mi108 min SW 8.9 G 12

Wind History for Santa Monica, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Camarillo, Camarillo Airport, CA12 mi1.8 hrsNW 44.00 miLight Rain56°F51°F84%1010.2 hPa
Point Mugu, Naval Air Warfare Center, CA16 mi1.8 hrsSW 73.00 miLight Rain Fog/Mist54°F52°F93%1009.8 hPa
Oxnard, Oxnard Airport, CA17 mi1.8 hrsN 07.00 miLight Rain54°F53°F97%1009.3 hPa
Van Nuys, Van Nuys Airport, CA22 mi51 minN 07.00 miLight Rain54°F50°F87%1009.6 hPa

Link to 5 minute data for KCMA

Wind History from CMA (wind in knots)
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Tide / Current Tables for Mugu Lagoon (ocean pier), California
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Mugu Lagoon (ocean pier)
Click for Map
Mon -- 02:48 AM PDT     0.39 feet Low Tide
Mon -- 06:01 AM PDT     Moonset
Mon -- 06:36 AM PDT     Sunrise
Mon -- 08:44 AM PDT     5.48 feet High Tide
Mon -- 03:15 PM PDT     -0.68 feet Low Tide
Mon -- 06:01 PM PDT     Moonrise
Mon -- 07:21 PM PDT     Sunset
Mon -- 09:21 PM PDT     5.26 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.41.30.60.40.91.93.24.45.35.54.93.82.41-0.1-0.7-0.50.41.83.34.65.25.14.4

Tide / Current Tables for Port Hueneme, California
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Port Hueneme
Click for Map
Mon -- 02:50 AM PDT     0.41 feet Low Tide
Mon -- 06:01 AM PDT     Moonset
Mon -- 06:36 AM PDT     Sunrise
Mon -- 08:51 AM PDT     5.60 feet High Tide
Mon -- 03:17 PM PDT     -0.71 feet Low Tide
Mon -- 06:01 PM PDT     Moonrise
Mon -- 07:22 PM PDT     Sunset
Mon -- 09:28 PM PDT     5.38 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.51.40.60.40.91.93.24.45.35.65.14.12.61.1-0.1-0.7-0.50.41.83.34.65.35.34.6

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 (11,2,3,4)
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Ground Weather Radar Station Los Angeles, 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.