Saturday, June24, 2017 L-36.com


Marine Weather and Tides
Seal Beach, CA

Version 3.4
What's New / NOTES
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 5:41AMSunset 8:08PM Friday June 23, 2017 10:27 PM PDT (05:27 UTC) Moonrise 5:27AMMoonset 7:49PM Illumination 0% Phase: New Moon; Moon at 0 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- 809 Pm Pdt Fri Jun 23 2017
Tonight..W winds 10 to 15 kt...becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 ft at 9 seconds and se 2 to 3 ft at 16 seconds. Slight chance of Thunderstorms. Patchy dense fog with vsby 1 nm or less after midnight.
Sat..W winds 10 to 15 kt. Wind waves 1 to 3 ft. Mixed swell W 2 ft at 8 seconds and sw 2 ft at 15 seconds. Patchy dense fog with vsby 1 nm or less in the morning. Slight chance of Thunderstorms in the morning.
Sat night..W winds 10 to 15 kt. Wind waves 1 to 3 ft. Mixed swell W 2 ft at 6 seconds and sw 2 ft at 15 seconds. Patchy fog after midnight.
Sun..SW winds 5 to 10 kt...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 6 seconds and sw 2 ft at 16 seconds. Patchy fog in the morning.
Sun night..W winds 10 to 15 kt...becoming variable 10 kt or less after midnight. Wind waves 2 ft or less. Mixed swell W 2 ft at 6 seconds and sw 2 ft at 16 seconds. Patchy fog after midnight.
Mon..Winds variable 10 kt or less...becoming W 10 to 15 kt in the afternoon. Wind waves 1 to 3 ft. Mixed swell W 2 to 3 ft at 7 seconds and sw 2 ft at 16 seconds. Patchy fog in the morning.
Mon night..W winds 10 to 20 kt with gusts to 25 kt...becoming nw 10 to 15 kt after midnight. Wind waves 1 to 3 ft. W swell 2 to 4 ft. Patchy fog after midnight.
Tue..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 to 4 ft. Patchy fog.
Wed..SW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft. Patchy fog.
PZZ600 809 Pm Pdt Fri Jun 23 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 03z...or 8 pm pdt...a 1014 mb surface high centered 200 nm southwest of point conception will build over the offshore waters through the weekend, while a 1002 mb thermal low centered near las vegas remains nearly stationary. Winds will increase through the weekend with small craft advisory conditions possible across the outer coastal waters as early as Saturday.

7 Day Forecast for Marine Location Near Seal Beach, CA
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location: 33.74, -118.12     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 240346
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
846 pm pdt Fri jun 23 2017

Synopsis
An upper-level ridge of high pressure centered over southern
arizona will continue to bring very warm conditions away from the
coast into next week. Subtropical moisture could bring a few
elevated showers and thunderstorms through Saturday, otherwise
night through morning low clouds and fog will continue into next
week. High pressure aloft will weaken Tuesday and a cooling trend
should develop as onshore flow increases.

Short term (fri-mon)
a ridge of high pressure remains centered over southern arizona
this evening. A very warm air mass will remain in place over the
next couple of days as the ridge will dominate the weather
pattern. Near record heat continued across the interior portions
of the area. Current heat headlines look agreeable and will be
continued at this time.

An entrenched stratus deck continues to hug the coast this
evening, but confidence in the marine layer stratus becomes lower
as the middle and high level moisture moves north out of baja
california. The middle and high level cloudiness could play tricks
on the marine layer over the next 24 hours or so, messing with
the marine inversion and weakening it. Some scouring could occur
as the cloudiness moves over the area.

The moisture will continue to move north out of the subtropics
into the region over through Saturday morning. Due to the height
of the moisture, any convection could be high-based and produce
dry thunderstorms. Pops are agreeable with the pattern as the
storm will likely move rapidly and not produce much measurable
rainfall. Best convective parameters are offshore, but showers and
thunderstorms cannot be ruled out over mainly san luis obispo and
santa barbara counties into Saturday. Some lightning strikes are
still occurring along the back edge of the moisture off the baja
california coast.

An update will be issued to tweak stratus coverage into Saturday
morning.

*** from previous discussion ***
air mass stabilizes through the day Saturday so the dry lightning
potential has been confined to the night and early morning hours.

This feature is gone by Sunday leaving behind a warmer air mass
and continued northerly flow at the surface. So temps expected to
warm a couple more degrees Sunday which should be the highest of
the next several days.

Sundowner winds expected to start developing as early as this
evening in the SRN sb area but stronger Saturday and Sunday
evenings. May be borderline advisory level there. Some winds also
through the i-5 corridor but below advisory levels.

A slight cooling trend is expected Monday as a weak trough moves
into or and NRN ca. This will knock the ridge down and cool most
areas by at least a few degrees.

Long term (tue-fri)
both the GFS and ec in pretty good agreement through about
Thursday showing a trough developing along the west coast next
week. While the patterns are similar the ECMWF now has trended
slightly cooler than the gfs. So while the magnitude of cooling
may not be entirely certain, confidence is high that a cooling
trend will begin Monday and continue through Thursday. At that
point models both show the ridge returning through next weekend,
though somewhat stronger warmer on the gfs. Expecting highs to
return to normal levels by Tue or wed, then slightly below normal
thu before warming again Friday. Marine lyr will become more
expansive especially by around mid week and again clear to near
the beaches.

Aviation 24 0130z.

At 00z, the marine layer depth was around 1200 feet deep at klax.

The top of the inversion was around 4500 feet with a temperature
near 29 degrees celsius.

Low to moderate confidence in the current forecast due to
increasing middle level cloudiness tonight. Ifr to MVFR
conditions will spread into coastal terminals through 07z and
valley terminals through 13z, then lower to predominantly lifr to
ifr conditions. Highest confidence in lifr conditions exists for
terminals north of point conception, but there is a chance of lifr
conditions for terminals south of the point mainly between 05z
and 16z. There is a slight chance of thunderstorms, mainly after
06z.

Klax... Predominantly lifr conditions will continue through at
least 16z. There is a 20 percent chance of lifr conditions
between 05z and 16z. There is a 10 percent chance of
thunderstorms after 06z. Current forecast is optimistic for
scattering out on Saturday afternoon. There is a 40 percent chance
that klax could remain MVFR throughout the day.

Kbur... Ifr conditions should spread into kbur between 07z and 13z,
then linger until around 15z before improving one category.VFR
conditions should develop between 16z and 17z. There is a 10
percent chance of thunderstorms after 06z.

Marine 23 900 pm.

Winds will gradually increase through the weekend, increasing
above small craft advisory levels between late tonight and
Saturday afternoon across the outer and northern waters. Small
craft advisory will likely need to be extended through Monday.

Across the inner waters, there is a 30 percent chance of small
craft advisory level winds developing each afternoon and evening,
increasing to 50 percent Sunday afternoon through Monday. Local
gusts up to 25 kt will continue across the santa barbara channel
and near the channel islands.

A short-period west to northwest swell with a period around 6
seconds could impact the coastal waters between Monday and
Wednesday. A mix of short-period seas and or winds could develop
across the entire coastal waters into midweek next week.

Otherwise, a 2-3 foot south swell with a 16-17 second period will
last through Saturday and may pose a risk for breaking waves
nearshore. People boating or kayaking near shore should use extra
caution.

Fire weather 23 900 am.

Hot and dry conditions will continue through Monday of next week.

The hot conditions will also bring the potential for plume
dominated fires which can create their own intense winds. Gusty
onshore winds will continue today focusing the concerns to
interior los angeles county. Weaker but locally breezy northwest
winds should follow Saturday through Monday... Shifting the area of
concern to santa barbara county and the tejon pass.

Tropical moisture aloft will move through the area tonight and
Saturday. While this should have little impact on humidities at
the surface, this moisture is producing a small area of high-
based thunderstorms. If this feature persists, dry lightning will
be a major concern as an ignition source with little to no rain.

With such conditions, elevated fire weather concerns will persist
through Monday, especially over all interior sections away from
the influence of the marine layer. If fire ignition occurs,
dangerous fire behavior should be expected. As such, the public
should be extreme careful when handling potential ignition sources
such as cigarettes, campfires, hand torches and metallic weed
trimmers.

Lox watches warnings advisories
Ca... Heat advisory in effect until 9 pm pdt Sunday for zones
38-52>54. (see laxnpwlox).

Beach hazards statement in effect through Saturday evening
for zones 40-41-87. (see laxcfwlox).

Excessive heat warning in effect until 9 pm pdt Sunday for
zone 59. (see laxnpwlox).

Pz... Small craft advisory in effect from 3 pm to 9 pm pdt Saturday
for zone 645. (see laxmwwlox).

Small craft advisory in effect from 3 pm Saturday to 3 am pdt
Sunday for zone 670. (see laxmwwlox).

Small craft advisory in effect from 3 am Saturday to 3 am pdt
Sunday for zones 673-676. (see laxmwwlox).

Hazard potential outlook (mon-fri)
no significant hazards expected.

Public... Hall mw
aviation... Hall
marine... Hall
fire weather... Kittell
synopsis... Hall
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRJC1 4 mi40 min NNW 1.9 G 5.1
46256 5 mi36 min 62°F4 ft
PFXC1 5 mi40 min NNW 6 G 8.9 64°F
PFDC1 6 mi40 min NW 6 G 6
PSXC1 6 mi40 min NW 4.1 G 8
BAXC1 7 mi40 min NW 8 G 8.9
AGXC1 7 mi40 min W 6 G 8 63°F 1013.1 hPa
OHBC1 - 9410660 - Los Angeles, CA 8 mi40 min 61°F1013.2 hPa
PXAC1 8 mi40 min NW 5.1 G 7
46253 12 mi28 min 66°F4 ft
46222 - San Pedro, CA (092) 13 mi28 min 64°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 27 mi40 min W 4.1 G 6
46221 - Santa Monica Bay, CA (028) 28 mi28 min 64°F4 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 49 mi28 min NW 9.7 G 14 61°F 66°F1012.6 hPa (+0.4)59°F

Wind History for Los Angeles Pier J, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Los Alamitos Army Airfield, CA5 mi90 minWNW 610.00 miA Few Clouds66°F59°F81%1013.1 hPa
Long Beach, Long Beach Airport, CA6 mi35 minWNW 79.00 miMostly Cloudy64°F59°F84%1013 hPa
Fullerton, Fullerton Municipal Airport, CA12 mi35 minNW 410.00 miFair68°F61°F78%1012.5 hPa
Torrance, Zamperini Field Airport, CA12 mi2.6 hrsW 1210.00 miPartly Cloudy63°F59°F88%1012.9 hPa
John Wayne-Orange County Airport, CA14 mi35 minSSW 510.00 miPartly Cloudy65°F61°F87%1012.9 hPa
Hawthorne, Hawthorne Municipal Airport, CA18 mi35 minWNW 310.00 miOvercast64°F60°F87%1013.1 hPa
Los Angeles, Los Angeles International Airport, CA20 mi35 minWSW 77.00 miOvercast63°F61°F93%1012.9 hPa
Los Angeles / USC Campus Downtown, CA21 mi41 minN 010.00 miOvercast65°F60°F84%1012.8 hPa

Wind History from SLI (wind in knots)
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Last 24hrS5CalmSW3CalmCalmNW3CalmCalmCalmCalmCalmCalmSW9SW10SW10S9SW8S10S9SW10W5W5NW6NW7
1 day agoS6S5S3S5CalmCalmS4CalmS3S4S5CalmS6S4S9S8S7SW8S9S9S8S5S4S6
2 days agoCalmS3CalmCalmCalmCalmS3CalmCalmS3SW4S7S8SW8SW8SW10SW10S8S9S8S8S9S5S6

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
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Sat -- 05:37 AM PDT     -0.99 feet Low Tide
Sat -- 05:42 AM PDT     Sunrise
Sat -- 06:28 AM PDT     Moonrise
Sat -- 11:53 AM PDT     3.59 feet High Tide
Sat -- 05:00 PM PDT     0.99 feet Low Tide
Sat -- 08:06 PM PDT     Sunset
Sat -- 08:50 PM PDT     Moonset
Sat -- 11:02 PM PDT     5.82 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
53.82.40.9-0.2-0.9-0.9-0.40.61.72.73.43.63.32.61.91.211.32.13.34.55.45.8

Tide / Current Tables for Long Beach, Terminal Island, California
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Long Beach
Click for Map
Sat -- 04:25 AM PDT     -1.68 feet Low Tide
Sat -- 05:43 AM PDT     Sunrise
Sat -- 06:28 AM PDT     Moonrise
Sat -- 10:53 AM PDT     4.36 feet High Tide
Sat -- 03:47 PM PDT     1.69 feet Low Tide
Sat -- 08:07 PM PDT     Sunset
Sat -- 08:50 PM PDT     Moonset
Sat -- 10:01 PM PDT     7.12 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.42.40.6-0.9-1.6-1.5-0.70.523.34.14.443.32.51.91.72.13.14.45.76.77.16.7

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 (1,6,7,8)
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Ground Weather Radar Station Santa Ana Mtns, CA
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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.