Saturday, September23, 2017 L-36.com


Marine Weather and Tides
Pasadena, 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 6:41AMSunset 6:47PM Saturday September 23, 2017 1:04 PM PDT (20:04 UTC) Moonrise 9:57AMMoonset 9:13PM Illumination 10% Phase: Waxing Crescent; Moon at 3 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- 853 Am Pdt Sat Sep 23 2017
Today..E to se winds 5 to 10 kt...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 7 seconds.
Tonight..W winds 10 to 15 kt...becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 3 ft at 7 seconds.
Sun..Winds variable 10 kt or less...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 ft at 7 seconds.
Sun night..W winds 10 to 15 kt...becoming N 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 ft at 10 seconds.
Mon..N winds 5 to 10 kt...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 2 ft at 11 seconds.
Mon night..W winds 10 to 15 kt...becoming N 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 ft at 11 seconds.
Tue..NW winds 10 to 15 kt. Wind waves 2 ft or less. S swell 2 ft.
Wed..NW winds 5 to 10 kt. Wind waves 2 ft or less. S swell 2 ft.
PZZ600 853 Am Pdt Sat Sep 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 pdt....A 1028 mb high pressure center was located 800 nm west of eureka and a 1004 mb low was over the four corners region. The high will push into nevada through early next week. Short period choppy seas will persist into next week.

7 Day Forecast for Marine Location Near Pasadena, CA
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location: 34.16, -118.14     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 231650
afdlox
area forecast discussion
national weather service los angeles oxnard ca
945 am pdt Sat sep 23 2017
updated aviation discussion

Synopsis
A high along with offshore winds, breezy at times, should bring a
significant warming trend and mostly clear skies into Friday.

Short term (tdy-mon)
upper level trough digging into great basin today, with northwest
flow aloft across southwest california. Near the surface, weak
offshore flow beginning to develop this morning as evident by
some surface observations across the mountains and foothills.

As a result, satellite imagery showing mostly clear skies
across the district as of 9 am. Warming and drying trend underway
today, which will continue the next few days as offshore pressure
gradients gradually ramp upwards. For today, highs will mostly
be in the 70s in most location, with some readings into the
lower to mid 80s across the valleys. The combination of locally
gusty offshore winds, warming temperatures, lowering humidities,
and dry fuels will bring elevated fire danger to portions of
southwest california tomorrow through much of next week.

*** from previous discussion ***
forecast-wise, main concerns in the short term will be offshore
winds and temperatures. With respect to winds, the gradual
increase in offshore gradients will result in an increase in north
to northeast winds across the area. At this time, the upper level
support is not overly impressive, so do not anticipate any
widespread advisory-level winds through Monday. However, there
will be some locally gusty offshore winds in the usual spots
(across southern sba county early this morning then shifting to
ventura and los angeles counties today and continuing through
Monday).

Otherwise, the overall synoptic pattern (increasing offshore
surface gradients and increasing thicknesses h5 heights) will
result in a warming trend across the area through Monday. In fact
by Monday, most coastal and valley areas will be a few degrees
above seasonal normals. Additionally, overnight lows will be
gradually increasing through the period.

As for clouds, generally mostly clear skies will prevail through
the period. There will be some patchy stratus fog this morning
along the central coast, but otherwise coastal and valley areas
are expected to remain stratus-free through the period.

Long term (tue-fri)
overall, 00z models exhibit decent synoptic agreement through the
period. At upper levels, low develops over the eastern deserts on
Tuesday and meanders across the eastern deserts and great basin
through the period. Near the surface, offshore flow will continue
although the flow should weaken by the end of next week.

Forecast-wise, main concerns will continue to be offshore winds
and temperatures. Northeasterly winds will continue through the
period with the strongest winds likely Tuesday Wednesday.

Depending on exactly where the upper low meanders, the upper level
support could increase or decrease. At this time, still do not
anticipate any widespread advisory-level winds across the area,
but this possibility will need to be closely monitored the next
few days. As the offshore winds continues, skies should remain
mostly clear for all areas as stratus development should be nil.

With the continued offshore flow, temperatures will remain well
above seasonal normals through the period with next Friday
potentially the warmest day. Overnight lows will also remain warm
through the period.

Aviation 23 1700z.

At 17z at klax... There was no marine layer or inversion.

High confidence inVFR conditions almost everywhere through
Sunday. Only exceptions being a 20 percent chance of lifr fg at
ksmx 10z-16z Sunday, and a 10 percent chance of bkn015 conditions
at klgb klax 09-16z Sunday. Onshore winds today will be similar
but slightly weaker than yesterday. Extended period of offshore
winds for valleys and mountains will begin on Sunday.

Klax... 10 percent chance of bkn015 09-16z Sunday, otherwise high
confidence inVFR. East winds likely Sunday morning, but only a 10
percent chance of exceeding 8 kt.

Kbur... High confidence inVFR through Sunday. Breezy offshore
winds will form over the region starting Sunday, but will not
surface at the airport.

Marine 23 900 am.

Confident in low-end small craft advisory (sca) level winds
continuing over the outer waters through tonight, especially
between point conception and san nicolas island. The western santa
barbara channel will also see low-end SCA winds this evening, but
should be localized and brief enough to not need an advisory. All
areas will experience a short-period chop from these winds into
Sunday. No expecting SCA winds through the middle of next week,
but afternoon and evening onshore winds will get into the 10 to 20
kt range everywhere starting Sunday with the warm conditions
inland. Pockets of dense fog at times cannot be ruled... Please
stay aware of your immediate environment.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect until 3 am pdt Sunday for
zones 670-673-676. (see laxmwwlox).

Hazard potential outlook (mon-fri)
it will be hot through next week, especially away from the coast.

There will be gusty northeast winds at times, especially across
los angeles and ventura counties Tuesday and Wednesday. The
combination of heat, gusty winds and low relative humidity values
will bring heightened fire danger, especially to the mountains and
valleys through the week.

Public... Gomberg thompson
aviation... Kittell
marine... Kittell
synopsis... Stu
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 22 mi53 min WSW 8 G 8.9 65°F 67°F1011.6 hPa
PSXC1 27 mi47 min SSE 8 G 12
BAXC1 28 mi47 min S 9.9 G 12
PXAC1 28 mi47 min SSE 6 G 8
PFXC1 29 mi47 min S 8.9 G 9.9 67°F
PRJC1 30 mi47 min S 8 G 8
PFDC1 30 mi47 min SE 5.1 G 8.9
AGXC1 31 mi47 min SSE 8 G 8.9 66°F 1011.5 hPa
OHBC1 - 9410660 - Los Angeles, CA 31 mi47 min 65°F1011.6 hPa
46256 32 mi43 min 65°F3 ft
46221 - Santa Monica Bay, CA (028) 34 mi35 min 67°F3 ft
46222 - San Pedro, CA (092) 39 mi35 min 65°F3 ft
46253 40 mi35 min 67°F2 ft

Wind History for Santa Monica, CA
(wind in knots)    EDIT      (on/off)   Help
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W16
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
El Monte, CA8 mi80 minSSE 610.00 miFair75°F48°F39%1011.5 hPa
Los Angeles / USC Campus Downtown, CA12 mi78 minN 010.00 miFair75°F50°F42%1010.5 hPa
Burbank - Bob Hope Airport, CA12 mi72 minVar 410.00 miFair70°F45°F41%1009.8 hPa
Los Angeles, Whiteman Airport, CA16 mi70 minE 510.00 miClear68°F44°F43%1012.2 hPa
Santa Monica, Santa Monica Municipal Airport, CA19 mi74 minSW 910.00 miFair69°F54°F59%1011.2 hPa
Brackett Field Airport, CA19 mi78 minW 810.00 miA Few Clouds66°F50°F56%1012.2 hPa
Van Nuys, Van Nuys Airport, CA19 mi74 minVar 410.00 miFair72°F43°F35%1010.2 hPa
Hawthorne, Hawthorne Municipal Airport, CA19 mi72 minW 810.00 miMostly Cloudy72°F55°F55%1011.1 hPa
Los Angeles, Los Angeles International Airport, CA21 mi72 minWSW 1010.00 miA Few Clouds70°F55°F61%1011.1 hPa
Fullerton, Fullerton Municipal Airport, CA22 mi72 minSW 710.00 miPartly Cloudy72°F53°F52%1010.6 hPa
Long Beach, Long Beach Airport, CA23 mi72 minSSW 810.00 miFair70°F55°F61%1011.2 hPa

Wind History from MWS (wind in knots)
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1 day agoSW5
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2 days agoCalmW1
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Tide / Current Tables for Santa Monica, Municipal Pier, California
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Santa Monica
Click for Map
Sat -- 05:24 AM PDT     1.43 feet Low Tide
Sat -- 06:43 AM PDT     Sunrise
Sat -- 09:57 AM PDT     Moonrise
Sat -- 11:38 AM PDT     5.21 feet High Tide
Sat -- 06:15 PM PDT     0.92 feet Low Tide
Sat -- 06:48 PM PDT     Sunset
Sat -- 09:14 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.64.23.42.61.91.51.522.83.84.65.15.24.84321.30.911.52.33.13.7

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Sat -- 05:24 AM PDT     1.46 feet Low Tide
Sat -- 06:43 AM PDT     Sunrise
Sat -- 09:57 AM PDT     Moonrise
Sat -- 11:39 AM PDT     5.25 feet High Tide
Sat -- 06:16 PM PDT     0.95 feet Low Tide
Sat -- 06:48 PM PDT     Sunset
Sat -- 09:14 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.64.23.52.61.91.51.522.83.84.65.15.24.8432.11.311.11.62.33.13.8

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 (16,3,4,5)
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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.