Saturday, July22, 2017 L-36.com


Marine Weather and Tides
Lomita, 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 5:57AMSunset 8:01PM Saturday July 22, 2017 7:52 PM PDT (02:52 UTC) Moonrise 5:12AMMoonset 7:31PM Illumination 0% Phase: New Moon; Moon at 29 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- 216 Pm Pdt Sat Jul 22 2017
Tonight..W winds 10 to 15 kt in the evening...becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 8 seconds and S 2 ft at 14 seconds. Patchy fog after midnight.
Sun..Winds variable 10 kt or less...becoming sw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 3 ft at 8 seconds and S 2 ft at 13 seconds. Patchy fog in the morning.
Sun night..SW winds 10 to 15 kt in the evening...becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 3 ft at 9 seconds and S 2 ft at 12 seconds. Patchy fog after midnight.
Mon..Winds variable 10 kt or less...becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 3 ft at 9 seconds and S 2 ft at 12 seconds. Patchy fog in the morning. Slight chance of Thunderstorms in the afternoon.
Mon night..SW winds 10 kt in the evening...becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 3 ft at 10 seconds and S 2 ft at 12 seconds. Slight chance of Thunderstorms in the evening.
Tue..Winds variable 10 kt or less...becoming sw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 9 seconds and S 2 ft at 12 seconds.
Tue night..SW winds 10 to 15 kt in the evening...becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 ft at 9 seconds and S 2 ft at 12 seconds. Patchy fog after midnight.
Wed..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and S 2 ft. Patchy fog.
Thu..W winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and S 2 ft. Patchy fog.
PZZ600 216 Pm Pdt Sat Jul 22 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 21z...or 2 pm pdt...1026 mb surface high pressure was centered 550 nm miles northwest of point conception and a 1006 mb thermal low was located over southern nevada.

7 Day Forecast for Marine Location Near Lomita, CA
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location: 33.77, -118.25     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 230148
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
648 pm pdt Sat jul 22 2017

Synopsis
For the next few days a typical summer weather pattern will bring
night through morning low clouds and fog to the coasts and some of
the valleys. Temperatures will be near normal. There is a slight
chance of thunderstorms in the afternoons and evenings for the
deserts and mountains on Monday and Tuesday.

Update
Forecast is on track this evening and no updates are planned.

Temps today at the coast were very close to yesterdays readings
and were a couple of degrees above normal. Valley and inland
temps warmed 3 to 6 degrees as warmer air aloft pushed into the
area. The 850 temps at klax rose 3 degrees c in the last 24 hours
while the 950 temps were unchanged.

Mondays convection is the big forecast question. Looking forward
to the 00z run of the ec to see if it bends towards the active
fcst of the GFS nam or continues dry.

Short term (sat-tue)
high pressure aloft centered over oklahoma will continue to weaken
and recenter over the southwest united states through early next
week. 500 mb heights will fall into Monday as a weak trough of
low pressure near 37n and 130w approaches the north coast of
california. Onshore flow will increase later today and the marine
layer should deepen slightly tonight and into Sunday. Night
through morning stratus clouds should penetrate a little farther
into the valley areas late tonight or early Sunday morning. As a
result, a cooling trend will take shape into Sunday, best along
the coastal areas.

The forecast gets a little more complicated on late Sunday as
monsoonal moisture moves northwest into southern california. Model
solutions are in good agreement that a decent monsoonal surge will
take place over southern california through Monday night, then
start to dry out between late Monday night and Tuesday night. The
marine layer stratus forecast will get difficult and low
confidence should placed in the cloud cover forecast between
Sunday night and Tuesday night as the moisture moves into the
region. Pops have been bumped up accordingly as convective showers
and thunderstorms could spill over into the coastal and valley
areas on Monday and Monday night. Precipitable water values
increase to near 1.50-2.00 inches by Monday afternoon. 850-700 mb
dewpoints and mixing ratios remain favorable supporting pops at
this time across the area.

The air mass should start to dry out as drier southwest flow
entrains into the air mass on Tuesday. Convective shower activity
should become confined to the mountains and desert on Tuesday and
Tuesday night. Pops have been pretty much untouched for this
period.

Long term (wed-sat)
ridging aloft to the east of the region will wobble west through
Thursday, then strengthen across the desert southwest. A warming
trend should take place for the latter half of next week. The
marine layer depth will shrink and onshore flow will weaken as
subsidence aloft presses down on top of the marine layer. 500 mb
heights increase and 1000-500 mb thickness values climb into late
week. Monsoonal activity will likely remain east of the area for
Wednesday through Friday.

The developing story could be tropical depression nine-e currently
off the mexican coast near 10n and 99w. This tropical system is
expected to become more developed over the next several days,
possibly becoming a hurricane on Monday. While this system has a
moderately-high probability of producing high surf and strong rip
currents for southern california beaches as early as next Friday,
there is still the possibility, albeit lower that remnant
moisture associated with the tropical system could move north into
the southwest united states next weekend and into the following
week. Stay tuned as this developing system could be the main
weather story.

Aviation 23 0000z
at 2345z, the marine inversion at klax was based around 1400
feet. The top of the inversion was 2300 feet with a temperature
of 28 degrees celsius.

High confidence in return of stratus fog to all coastal sites,
but only moderate confidence in timing which could be off by as
much as 2 hours. There is a 30 percent chc that CIGS could be 1
flight cat lower than fcst. Clearing times could be an hour
earlier than fcst.

Low confidence in kbur and kvny with a 40 percent chc of ifr cigs
12z-17z.

Klax... Moderate confidence in taf. Arrival of MVFR CIGS could be
+ - 2 hours of current 09z forecast. There is a 30 percent chc
of ifr CIGS through 16z.

Kbur... Low confidence in taf. There is a 40% chance of ifr cigs
12z-17z.

Marine 22 100 pm...

for the outer waters, good confidence in current forecast. Winds
and seas are expected to remain below small craft advisory (sca)
levels through Thursday.

For the inner waters, good confidence in current forecast. Winds
and seas are expected to remain below SCA levels through Thursday.

There will be a chance of thunderstorms Monday afternoon and
evening across the entire coastal waters.

Beaches 22 230 pm.

Significant surf conditions may impact the southern california
beaches late next week. A tropical cyclone developing off the
mexican coast will generate a long period southeasterly swell
across the coastal waters beginning next Friday and continuing
through the weekend. This swell will likely generate high surf and
strong rip currents on south facing beaches.

Lox watches warnings advisories
Ca... Beach hazards statement in effect through Sunday evening for
zones 40-41-87. (see laxcfwlox).

Pz... None.

Hazard potential outlook (tue-sat)
a developing monsoonal flow pattern will continue chances of
showers and thunderstorm across the mountains and desert Tuesday.

A significant surf event could develop as early as Friday as
swells from what could become tropical cyclone hilary arrive at
southern california beaches. High surf and strong rip currents
could develop Friday, possibly peaking over the weekend.

Public... Hall rorke
aviation... Rorke
marine... Thompson
beaches... Thompson hall
synopsis... Sweet
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PXAC1 1 mi58 min NNW 7 G 8
PSXC1 1 mi52 min WNW 4.1 G 7
BAXC1 1 mi58 min NNW 6 G 7
PFDC1 2 mi52 min SSW 4.1 G 4.1
PFXC1 2 mi52 min SW 7 G 8 76°F
PRJC1 4 mi52 min WSW 12 G 13
OHBC1 - 9410660 - Los Angeles, CA 4 mi52 min 71°F1010.8 hPa (-0.3)
AGXC1 4 mi58 min WSW 11 G 13 71°F 1010.8 hPa
46256 5 mi60 min 71°F3 ft
46222 - San Pedro, CA (092) 11 mi52 min 72°F2 ft
46253 14 mi52 min 72°F3 ft
46221 - Santa Monica Bay, CA (028) 21 mi52 min 72°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 21 mi52 min WSW 8.9 G 11 69°F 74°F1011.2 hPa (-0.4)
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 43 mi42 min W 7.8 G 9.7 71°F1010.5 hPa

Wind History for Los Angeles Pier S, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Torrance, Zamperini Field Airport, CA5 mi65 minWNW 1510.00 miA Few Clouds72°F62°F73%1010.8 hPa
Long Beach, Long Beach Airport, CA7 mi59 minSSE 710.00 miFair77°F63°F62%1010.4 hPa
Los Alamitos Army Airfield, CA11 mi3.9 hrsSSW 1010.00 miFair77°F65°F67%1011.1 hPa
Hawthorne, Hawthorne Municipal Airport, CA12 mi59 minWNW 710.00 miFair73°F64°F74%1010.7 hPa
Los Angeles, Los Angeles International Airport, CA14 mi59 minWSW 1110.00 miA Few Clouds71°F64°F79%1010.6 hPa
Fullerton, Fullerton Municipal Airport, CA16 mi59 minSSW 610.00 miA Few Clouds76°F66°F72%1010.2 hPa
Los Angeles / USC Campus Downtown, CA17 mi65 minW 410.00 miFair76°F64°F67%1010.2 hPa
Santa Monica, Santa Monica Municipal Airport, CA21 mi61 minWSW 610.00 miFair71°F64°F79%1010.8 hPa
John Wayne-Orange County Airport, CA21 mi59 minSSW 910.00 miA Few Clouds72°F64°F76%1010.7 hPa

Wind History from TOA (wind in knots)
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Last 24hrNW12--------------------Calm4455NW10NW9NW15NW14NW16W15NW15NW15
1 day agoW11--------------------555Calm4W4NW11NW13NW16W15W17NW16W14
2 days agoNW13--------------------CalmCalm--4CalmW6NW10W10NW14NW17W16NW16NW15

Tide / Current Tables for Los Angeles Harbor, Mormon Island, California
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Los Angeles Harbor
Click for Map
Sat -- 03:31 AM PDT     -1.29 feet Low Tide
Sat -- 05:12 AM PDT     Moonrise
Sat -- 05:58 AM PDT     Sunrise
Sat -- 09:58 AM PDT     4.35 feet High Tide
Sat -- 02:54 PM PDT     1.72 feet Low Tide
Sat -- 07:30 PM PDT     Moonset
Sat -- 08:00 PM PDT     Sunset
Sat -- 09:11 PM PDT     7.00 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.81-0.4-1.2-1.2-0.50.623.24.14.44.13.42.61.91.72.12.94.25.56.576.75.7

Tide / Current Tables for King Harbor, Santa Monica Bay, California
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King Harbor
Click for Map
Sat -- 03:34 AM PDT     -1.32 feet Low Tide
Sat -- 05:12 AM PDT     Moonrise
Sat -- 05:58 AM PDT     Sunrise
Sat -- 10:01 AM PDT     4.22 feet High Tide
Sat -- 02:58 PM PDT     1.64 feet Low Tide
Sat -- 07:31 PM PDT     Moonset
Sat -- 08:01 PM PDT     Sunset
Sat -- 09:13 PM PDT     6.80 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.71-0.4-1.2-1.3-0.60.51.83.13.94.243.32.51.91.61.92.845.26.36.86.65.6

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 (22,6,7,8)
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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.