Tuesday, February20, 2018 L-36.com


Marine Weather and Tides
Rossmoor, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
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.

Sunrise 6:28AMSunset 5:42PM Tuesday February 20, 2018 7:28 AM PST (15:28 UTC) Moonrise 10:28AMMoonset 11:34PM Illumination 28% Phase: Waxing Crescent; Moon at 5 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- 251 Am Pst Tue Feb 20 2018
Today..N winds 10 to 15 kt. Wind waves 2 ft or less. W swell 3 to 5 ft at 12 seconds.
Tonight..NW winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 4 ft at 11 seconds.
Wed..W winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft at 13 seconds.
Wed night..W winds 10 to 15 kt, becoming nw 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 3 ft at 15 seconds. Slight chance of rain.
Thu..NW winds 5 to 10 kt, becoming W 15 to 20 kt with gusts to 25 kt in the afternoon. Wind waves 1 to 3 ft. W swell 2 to 3 ft at 15 seconds. Slight chance of rain.
Thu night..Western portion, W winds 20 to 30 kt. Elsewhere, sw winds 15 to 25 kt. Combined seas 4 to 6 ft dominant period 15 seconds. Slight chance of rain.
Fri..W winds 15 to 25 kt with gusts to 30 kt. Combined seas 3 to 5 ft. Slight chance of rain.
Sat..W winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft.
PZZ600 251 Am Pst Tue Feb 20 2018
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 09z...or 1 am pst...a 1039 mb high was located 700 nm W of eureka and a 993 mb low was in colorado. Improving conditions are forecast for later today and Wednesday.

7 Day Forecast for Marine Location Near Rossmoor, CA
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location: 33.79, -118.07     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 201135
afdlox
area forecast discussion
national weather service los angeles oxnard ca
335 am pst Tue feb 20 2018

Synopsis 20 333 am.

A trough of low pressure will likely persist over the west coast
through the next seven days, supporting below normal temperatures
with showers possible at times.

Short term (tdy-thu) 20 333 am.

Latest IR satellite imagery indicated low clouds banking up
against the northern slopes near the kern county border rapidly
diminishing with clear skies prevailing elsewhere. There have been
gusty northerly winds focused across the la vta mountains
overnight. Those have generally fallen below advisory criteria
(save for whitaker peak). With winds expected to continue to
weaken this morning, have allowed the wind advisory to expire. The
clear skies and cold air mass over the area has supported well
below normal temperatures across the area with current suite of
frost freeze advisories looking representative of the latest
trends this morning and again into early Wednesday morning.

A long wave trough of low pressure is expected to be persist near
the west coast for at least the next week supporting continued
below normal temperatures. Short-wave troughs are are expected
rotate around the trough from the north or northwest into the
region, possibly supporting showers at times. The first is set to
arrive Wednesday some increase in northwest to onshore flow
supporting breezy conditions for some areas and milder overnight
temperatures by Thursday morning. A second, more pronounced short-
wave trough is expected to push into the great basin Thursday,
bringing gusty northwest to onshore winds to prone areas beginning
Thursday afternoon. Given the overland trajectory of this system,
it will likely be moisture starved, supporting only a slight
chance of rain and mountain snow showers with generally light
amounts expected. This will be another cold system, with snow
levels initially 4000-5500 feet will likely drop to around 3000
feet.

Long term (fri-mon) 20 334 am.

The trough of low pressure will push east of the region by this
weekend with any lingering shower activity coming to an end
Friday. Gusty northerly winds will likely continue Friday in the
wake of the system. A weak ridge of high pressure will likely make
a brief appearance this weekend. This combined with weak offshore
flow will allow temperatures to warm some, most notable at higher
elevations, and approaching seasonal normals.

Low confidence exists in the forecast for early next week, other
than continued below average temperatures seem likely. Model
guidance suggests the trough which has been largely situated over
land to scoot westward, possibly off the west coast.

Climatologically, this is a favorable position for widespread and
potentially significant rain and mountain snow across the region.

The models hint at this potential but are having difficulty with
the details. The current forecast package only hints the storm
potential, given the uncertainty. At this time its does look
somewhat likely that it will rain sometime early next week. The
big questions are exactly when and how much.

Aviation 20 1109z.

At 1105z at klax, there was no marine layer nor a sfc based
inversion.

High confidence in cavu conds for the next 24 hours.

Klax... High confidence in cavu conds for the next 24 hours.

Kbur... High confidence in cavu conds for the next 24 hours.

Marine 20 308 am.

For the outer waters... High confidence in current forecast. Local
small craft advisory (sca) level winds are possible on later this
afternoon and evening. After a lull on Wednesday, winds will
likely increase to SCA levels again Thursday afternoon through
Friday, possibly continuing into Saturday.

For the inner waters... High confidence in current forecast. Sca
level winds are likely Thursday afternoon and Friday.

Lox watches warnings advisories
Ca... Hard freeze warning in effect until 9 am pst this morning for
zones 34>36-38-44. (see laxnpwlox).

High surf advisory in effect until 2 pm pst this afternoon
for zones 34-35. (see laxcfwlox).

Hard freeze warning in effect from 1 am to 9 am pst Wednesday
for zones 34>36-38-44. (see laxnpwlox).

Freeze warning in effect until 9 am pst this morning for
zones 39-40-45-46. (see laxnpwlox).

Freeze warning in effect from 1 am to 9 am pst Wednesday for
zones 39-40-45. (see laxnpwlox).

Frost advisory in effect until 9 am pst this morning for
zones 88-547. (see laxnpwlox).

Pz... None.

Hazard potential outlook (thu-mon)
Rain and mountain snow could return to the area Thursday into
Friday, possibly making for hazardous travel in the mountains.

Public... Munroe
aviation... Rorke
marine... Rorke
synopsis... Munroe
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRJC1 7 mi41 min NNE 5.1 G 8
PFXC1 8 mi41 min NNE 1.9 G 5.1 45°F
PSXC1 8 mi41 min NNE 5.1 G 5.1
BAXC1 9 mi41 min NE 4.1 G 5.1
46256 9 mi37 min 55°F2 ft
PFDC1 10 mi41 min NW 2.9 G 4.1
PXAC1 10 mi47 min N 5.1 G 5.1
AGXC1 11 mi41 min N 6 G 7 47°F 1020.4 hPa
OHBC1 - 9410660 - Los Angeles, CA 12 mi41 min 61°F1020.6 hPa
46253 16 mi29 min 59°F5 ft
46222 - San Pedro, CA (092) 18 mi29 min 60°F5 ft
ICAC1 - 9410840 - Santa Monica Pier 27 mi47 min N 8 G 15 46°F 59°F1020.4 hPa
46221 - Santa Monica Bay, CA (028) 30 mi29 min 59°F4 ft

Wind History for Los Angeles Pier J, CA
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NW12
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N6
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Los Alamitos Army Airfield, CA1 mi33 minN 010.00 miFair37°F20°F52%1020.6 hPa
Long Beach, Long Beach Airport, CA5 mi36 minN 010.00 miFair40°F21°F49%1020.5 hPa
Fullerton, Fullerton Municipal Airport, CA7 mi36 minE 410.00 miFair39°F19°F45%1020.1 hPa
John Wayne-Orange County Airport, CA13 mi36 minNNE 410.00 miA Few Clouds40°F21°F49%1020.3 hPa
Torrance, Zamperini Field Airport, CA14 mi41 minS 410.00 miClear37°F21°F52%1020.7 hPa
Hawthorne, Hawthorne Municipal Airport, CA17 mi36 minN 010.00 miFair42°F21°F43%1020.6 hPa
Los Angeles / USC Campus Downtown, CA19 mi42 minN 010.00 miFair41°F19°F43%1020.2 hPa
Los Angeles, Los Angeles International Airport, CA20 mi36 minE 410.00 miFair42°F19°F40%1020.4 hPa

Wind History from SLI (wind in knots)
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Last 24hrNW12NW13NW10
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SW9W5NW7N10
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NW11NW9NW6W5NE3CalmNE4NE3Calm
1 day agoW3CalmCalmSW7S7S9S11SW10S11SW10W9SW9SW8W3CalmW3W6SW7SW9SW12W6W8NW13
G18
W9
2 days agoNE4CalmCalmSW7S8SW9SW8SW9SW8W8W7W5NW3CalmCalmCalmCalmCalmCalmNE3CalmCalmNE3E3

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
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Tue -- 12:45 AM PST     3.74 feet High Tide
Tue -- 06:31 AM PST     Sunrise
Tue -- 07:03 AM PST     0.79 feet Low Tide
Tue -- 09:28 AM PST     Moonrise
Tue -- 12:41 PM PST     3.24 feet High Tide
Tue -- 05:41 PM PST     Sunset
Tue -- 07:03 PM PST     0.56 feet Low Tide
Tue -- 10:33 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.63.73.52.92.21.510.811.42.12.73.13.232.51.81.20.70.60.71.222.8

Tide / Current Tables for Long Beach, Inner Harbor, California
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Long Beach
Click for Map
Tue -- 05:57 AM PST     1.34 feet Low Tide
Tue -- 06:31 AM PST     Sunrise
Tue -- 09:29 AM PST     Moonrise
Tue -- 11:46 AM PST     3.81 feet High Tide
Tue -- 05:41 PM PST     Sunset
Tue -- 05:56 PM PST     0.99 feet Low Tide
Tue -- 10:34 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.34.13.52.721.51.31.522.73.33.73.83.632.31.61.211.21.72.53.34

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 (10,2,3,4)
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Ground Weather Radar Station Santa Ana Mtns, 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.