Thursday, March23, 2017 L-36.com


Marine Weather and Tides
Simi Valley, CA

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:51AMSunset 7:11PM Thursday March 23, 2017 9:19 AM PDT (16:19 UTC) Moonrise 4:03AMMoonset 2:52PM Illumination 16% 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- 859 Am Pdt Thu Mar 23 2017
.small craft advisory in effect until 4 pm pdt this afternoon...
Today..Western portion...nw winds 15 to 25 kt. Elsewhere...nw winds 10 to 15 kt. Combined seas 6 to 8 ft dominant period 13 seconds...subsiding to 5 to 6 ft dominant period 13 seconds in the afternoon.
Tonight..Western portion...nw winds 20 to 25 kt becoming 10 to 15 kt after midnight. Elsewhere...nw winds 10 to 15 kt becoming variable 10 kt or less after midnight. Combined seas 3 to 5 ft dominant period 13 seconds. Patchy fog after midnight.
Fri..E winds 5 to 10 kt...becoming sw in the afternoon. Wind waves 2 ft or less. W swell 3 ft at 13 seconds. Patchy fog in the morning.
Fri night..NW winds 10 to 15 kt. Wind waves 1 to 3 ft. W swell 2 to 3 ft at 12 seconds. Slight chance of rain after midnight.
Sat..W winds 10 to 15 kt. Wind waves 1 to 3 ft. W swell 3 ft at 11 seconds. Chance of showers in the morning.
Sat night..Western portion...nw winds 20 to 25 kt becoming 5 to 10 kt after midnight. Elsewhere...sw winds 10 to 15 kt becoming variable 10 kt or less after midnight. Wind waves 1 to 3 ft. W swell 4 to 5 ft at 8 seconds.
Sun..NW winds 15 to 20 kt with gusts to 25 kt. Combined seas 4 to 5 ft.
Mon..NW winds 20 to 30 kt with gusts to 35 kt. Combined seas 7 to 9 ft.
PZZ600 859 Am Pdt Thu Mar 23 2017
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 pst...a 992 mb low was 800 nm W of portland...with a cold front trailing sw of the the low. A 1027 mb high was located around 500 nm sw of point conception.

7 Day Forecast for Marine Location Near Simi Valley, CA
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location: 34.27, -118.8     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 231150
afdlox
area forecast discussion
national weather service los angeles/oxnard ca
450 am pdt Thu mar 23 2017
updated aviation discussion

Synopsis
It will dry and warmer today and Friday along with some northerly
winds. By Friday night and Saturday, a weak storm system will
bring another shot of rain to the area. For early next week, high
pressure will build over the area, resulting in dry and warmer
conditions.

Short term (tdy-sat)
a fast moving ridge is moving into the area. Skies are clear save
for some north slopes clouds and showers which will only last
through the morning. There is a weak offshore push from the north
and this will create local pass and canyon winds but nothing will
be strong enough for a wind advisory. There airmass is still
fairly cool so despite the added sunshine and offshore flow there
will still be little if any warming today compared to ydy.

A little eddy will spin up tonight and this along with the falling
hgts in the wake of the departing ridge. This eddy will be strong
enough to bring some stratus to the la coast overnight.

Hgts will fall and skies will begin to cloud up as a weak trof
approaches. The area will be dry in the morning but a chance of
rain will move into the central coast in the afternoon. Not much
change in the temp parameters though and MAX temps will not change
much with almost all coast and vly temps in the 60s or about 5
degrees blo normal.

The trof along with a weak cold front will continue to move into
the area Friday night and Saturday. The GFS and the NAM agree on
the timing of the rain but the ec is about 6 hours faster. Rain is
likely for the central coast overnight but more than likely the
rain will hold off for areas south of pt conception until
Saturday. Rain will diminish with the front as it heads south but
it looks like the front will hold together enough to bring a
chance of rain all the way through la county. Rain will begin to
taper off from the NW early in the afternoon and then work its was
to the SE rain should end everywhere except for the north slopes
by late afternoon.

Rainfall amounts will be nothing to write home about. About a half
inch for the central coast... A quarter inch for the sba south
coast and the vta coasts and vlys. The rest of the area including
the la coasts and vlys will likely only see about a tenth of an
inch of rain. This will not be cold storm and the snow level will
only dip to 6500 feet but will for the most part be above 7000
feet. There will not be much in the way of snow accumulations. The
clouds, rain and cooler air will contribute to a 3 to 6 degree
drop in MAX temps.

Long term (sun-wed)
the ec and the GFS are in pretty good agreement through the
extended period.

Sunday will see the clouds clear out and a small ridge will pop
in. MAX temps will rise 2 to 4 degrees. There will be some north
winds but again they will likely be below advisory criteria.

A little inside but not too inside slider moves through the area
of Monday. It does not have much moisture to work with but it
looks like there is a chance of a couple of showers across the
mtns the antelope vly and the interior vlys. Rainfall amounts look
pretty minimal if any. Lots of cold air will pour in and MAX temps
will nose dive 4 to 8 degrees and will be 5 to 10 degrees blo
normal.

Ridging... Clear skies and offshore flow will combine to bring two
nice days with each day warmer than the last. MAX temps will be a
couple of degrees above normal Tuesday and the 3 to 6 degrees
above normal on Wednesday.

Aviation 23/1145z
at 1130z, there was no marine inversion present at klax.

Good confidence in tafs through 06z. There is a 30 percent chc
that northerly winds will be strong enough to affect ksmo and
klax. There is a 30 percent chance MVFR possibly ifr cigs/vsbys do
not form at klax, klgb, and ksmo. There is a 20 percent chance of
low MVFR to ifr cigs/vsbys after 09z at kbur kvny koxr and kcma.

Klax... High confidence in cavu conds through 24/06z. Lower
confidence about clouds after 24/06z with equal chcs of low
clouds arriving between 07z and 11z. There is also a 20 percent
chc that the clouds will be ifr. There is a 20 percent chc of a
20 kt cross wind through 16z.

Kbur... Good confidence in taf. There is a 20 percent chance of
low MVFR to ifr cigs/vsbys after 09z.

Marine 23/310 am
sca conditions will continue to the south of point conception
through this afternoon, gradually improving this evening into
tonight. There will be a few gale force gusts between san nicolas
island and santa rosa island during this time. There is a 70
percent chance SCA winds will prevail across the outer waters
Saturday night through Tuesday. SCA winds may also extend into the
inner waters at times during this period, mostly likely late
Monday into early Tuesday.

Lox watches/warnings/advisories
Ca... Beach hazards statement in effect through this afternoon for
zones 39>41-87. (see laxcfwlox).

Pz... Small craft advisory in effect until 9 pm pdt this evening
for zone 650. (see laxmwwlox).

Small craft advisory in effect until 4 pm pdt this afternoon
for zone 655. (see laxmwwlox).

Small craft advisory in effect until 3 am pdt Friday for
zones 673-676. (see laxmwwlox).

Hazard potential outlook (sat-wed)
a weak rain event is expected Friday night and Saturday, with
minimal impacts. High surf and strong rip currents are likely
Friday into Sunday.

Public... Rorke
aviation... Munroe
marine... Munroe
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 24 mi49 min W 7 G 11 57°F 60°F1018.7 hPa
46221 - Santa Monica Bay, CA (028) 30 mi49 min 59°F8 ft
46217 - Anacapa Passage, CA (111) 34 mi49 min 57°F7 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 38 mi39 min WNW 21 G 25 56°F 58°F1018.5 hPa47°F
PXAC1 45 mi49 min NW 8 G 11
BAXC1 46 mi49 min NW 17 G 19
PSXC1 46 mi49 min WNW 12 G 17
PFDC1 47 mi49 min W 14 G 17
OHBC1 - 9410660 - Los Angeles, CA 47 mi49 min 60°F1018.4 hPa
NTBC1 - Santa Barbara, CA - 9411340 48 mi49 min NW 6 G 12 54°F 1019.5 hPa
AGXC1 48 mi49 min NW 15 G 17 59°F 1018.4 hPa
PFXC1 48 mi49 min NW 14 G 17 60°F 1017.5 hPa
PRJC1 49 mi49 min NW 12 G 18

Wind History for Santa Monica, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Camarillo, Camarillo Airport, CA16 mi24 minNE 410.00 miFair54°F46°F77%1020 hPa
Van Nuys, Van Nuys Airport, CA17 mi28 minNNW 10 G 1710.00 miFair55°F36°F49%1017.9 hPa
Point Mugu, Naval Air Warfare Center, CA20 mi83 minNE 310.00 miA Few Clouds48°F45°F89%1018.8 hPa
Los Angeles, Whiteman Airport, CA21 mi26 minNW 10 G 2225.00 miClear54°F35°F51%1019.3 hPa
Oxnard, Oxnard Airport, CA22 mi28 minENE 710.00 miFair55°F46°F72%1019.2 hPa
Burbank - Bob Hope Airport, CA24 mi26 minNW 1110.00 miFair55°F36°F49%1017.1 hPa

Wind History from CMA (wind in knots)
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Last 24hr--W7SW9W14W11W17
G25
W15
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W19W15W16W13W14W6NW5W4CalmNE4CalmNE33CalmCalmE5NE4
1 day agoNE7NE5E7NE4NE3NE5SE4NE5E8NE5NE6NE4NE3NE4CalmCalmCalmCalmNW3SW5W9W7W8Calm
2 days agoSE4CalmSW5SW86SW10SW10SW9SW9SW5S3CalmCalmSE3CalmE4NE5E6CalmCalmNE8E6E6NE8

Tide / Current Tables for Mugu Lagoon (ocean pier), California
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Mugu Lagoon (ocean pier)
Click for Map
Thu -- 01:04 AM PDT     2.11 feet Low Tide
Thu -- 04:04 AM PDT     Moonrise
Thu -- 06:49 AM PDT     4.47 feet High Tide
Thu -- 06:55 AM PDT     Sunrise
Thu -- 01:55 PM PDT     0.01 feet Low Tide
Thu -- 02:54 PM PDT     Moonset
Thu -- 07:10 PM PDT     Sunset
Thu -- 08:18 PM PDT     3.82 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.32.12.22.73.33.94.34.54.23.62.71.70.80.200.311.92.83.53.83.73.32.8

Tide / Current Tables for Port Hueneme, California
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Port Hueneme
Click for Map
Thu -- 01:06 AM PDT     2.19 feet Low Tide
Thu -- 04:04 AM PDT     Moonrise
Thu -- 06:55 AM PDT     Sunrise
Thu -- 06:56 AM PDT     4.56 feet High Tide
Thu -- 01:57 PM PDT     0.01 feet Low Tide
Thu -- 02:54 PM PDT     Moonset
Thu -- 07:11 PM PDT     Sunset
Thu -- 08:25 PM PDT     3.88 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.42.22.32.73.33.94.44.64.33.72.81.80.90.200.30.91.82.73.53.83.83.42.9

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of Southwest    EDIT
Geos

Wind Forecast for Los Angeles/Oxnard, CA (12,3,4,5)
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Ground Weather Radar Station Los Angeles, CA
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weather_mapweather_map weather_map

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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.