Wednesday, August21, 2019 L-36.com


Marine Weather and Tides
Avalon, CA

Version 3.4
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7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
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Sunrise 6:18AMSunset 7:34PM Wednesday August 21, 2019 5:13 PM PDT (00:13 UTC) Moonrise 11:12PMMoonset 11:46AM Illumination 62% Phase: Waning Gibbous; Moon at 21 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- 208 Pm Pdt Wed Aug 21 2019
Tonight..W winds 10 kt, becoming se 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 4 ft at 7 seconds. Patchy dense fog with visibility 1 nm or less after midnight.
Thu..SE winds 5 to 10 kt, becoming S 10 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 3 ft at 7 seconds. Patchy dense fog with visibility 1 nm or less in the morning.
Thu night..S winds 5 to 10 kt, becoming se 10 to 15 kt after midnight. Wind waves 2 ft or less. Mixed swell W 3 ft at 8 seconds and sw 2 ft at 17 seconds.
Fri..SE winds 10 to 20, becoming S 10 kt in the afternoon. Wind waves 1 to 3 ft. Mixed swell W 2 to 3 ft at 9 seconds and sw 2 ft at 16 seconds.
Fri night..S winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 9 seconds and sw 2 ft at 16 seconds.
Sat..SE winds 5 to 10 kt, becoming W in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 9 seconds and S 2 ft at 15 seconds.
Sat night..W winds 10 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 3 ft at 13 seconds.
Sun..W winds 10 to 15 kt. Wind waves 2 ft or less. S swell 4 to 5 ft.
Mon..W winds 5 to 10 kt. Wind waves 2 ft or less. S swell 3 to 4 ft.
PZZ600 208 Pm Pdt Wed Aug 21 2019
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 20z, or 1 pm pdt, a 1022 mb surface high was located 800 nm west of point conception, while a 1006 mb thermal low was over southwest arizona. The high will push closer to the coast tonight, then retreat back offshore Thursday through the weekend. Gale force winds and dangerous seas are likely from the central coast to san nicolas island tonight, with choppy seas elsewhere.


7 Day Forecast for Marine Location Near Avalon, CA
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location: 33.51, -118.64     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 212357 aaa
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
457 pm pdt Wed aug 21 2019
updated aviation discussion

Synopsis 21 144 pm.

A trough of low pressure will bring a cooling trend on Thursday
through the end of the week. There will be areas of night through
morning low clouds and fog for most coastal areas. High pressure
will build back in later this weekend with some warming, mainly
inland.

Short term (tdy-sat) 21 213 pm.

Temperatures warmed across the board today anywhere from a couple
degrees over yesterday to as many as 25 degrees at san luis
harbor avila beach where it has reached 91 so far this afternoon!
offshore trends and building high pressure aloft are the primary
factors generating these warm hot temperatures. Northerly
sundowner winds expected to return to SRN sb county later this
afternoon and evening with gusts to around 50 mph in the strongest
areas, mainly from refugio canyon west. Hi res models still
showing some winds reaching the eastern portion of the santa ynez
range but at much lower speeds. Warm temps and lower humidities
still expected which will create elevated fire concerns there.

Today should be the warmest day in most areas as onshore trends
and lowering heights cause temps to fall slightly Thursday. Still
near to above normal temps in most areas with just some patchy
marine layer clouds, mainly central coast and la county.

The cooling trend will continue into Friday as an eddy develops
near catalina and marine layer clouds become more widespread along
the coast. Some of those will push into the coastal valleys early
Friday morning.

Temperature trends will reverse Saturday as onshore flow weakens
and heights start to rebuild. Expecting most areas to warm up 2-5
degrees from Friday's levels, though more so across inland slo
county.

Long term (sun-wed) 21 227 pm.

A modest warming trend that will begin Saturday will continue into
early next week but moderate onshore gradients and little if any
northerly flow at lower levels will keep temps from going up too
much, mainly 90s in the valleys and 70s 80s closer to the coast.

Seasonably warm with highs generally 2-5 degrees above normal.

Will be closely monitoring the track and intensity of what is now
ts ivo (pronounced "eye-vo") off the coast of mexico. It's
expected to make a turn to the northwest and be near 30n 125w by
Monday afternoon. This would put it about 500nm southwest of la,
but likely not even a tropical depression by that time as it
drifts over cooler waters. Main impacts will likely be increasing
southerly swells and surf at south facing beaches. Models not
showing much in the way of moisture at lower levels but we should
at least see some mid and high clouds from it as early as Sunday
night.

Aviation 21 2355z.

At 2330z, the marine layer was 1000 feet deep at klax. The top of
the inversion was around 2800 feet with a temp of 28c.

There is moderate confidence in the 00z tafs at ksmx, ksmo, klax
and klgb due to uncertainties with the timing and extent of low
clouds and fog with lifr ifr conditions from later this evening to
later tonight and persisting into Thu morning. There is also a
30% chance the low clouds may not affect ksmo at all during the
period. Otherwise, the low clouds should move into ksmx around
05z and for the rest of the airfields between 10z and 13z. The
low clouds should clear toVFR by 17z. The timing of the onset and
dissipation of the low clouds may be off + - an hour or two.

Elsewhere, there is generally hi confidence in the 00z tafs with
vfr conditions thru Thu afternoon. However, there is a 20%-30%
chance low clouds and lifr CIGS could affect ksbp late tonight and
early thu.

Klax... There is moderate confidence in the 00z TAF due to
uncertainties with the timing and extent of low clouds and fog
with ifr conditions from late tonight into Thu morning. Low
clouds should move in around 12z and persist until around 17z thu,
withVFR conditions the rest of the day into early evening before
ifr CIGS move back in around 04z Thu evening. The timing of the
onset and dissipation of any low clouds may be off + - an hour or
two.

Kbur... Hi confidence in the 00z TAF withVFR conditions expected
thru Thu afternoon.

Marine 21 202 pm.

High confidence in gale force winds and dangerous short period
dominant sea conditions through tonight over the outer waters
from the central coast to san nicolas island. Peak winds between
35 and 40 kt are likely this evening. These winds will lower to
small craft advisory (sca) for Thursday and Thursday night.

Moderate confidence for relatively light winds well below sca
Friday through at least the weekend.

High confidence in small craft advisory (sca) winds nearshore
along the central coast, and the western santa barbara channel
through much of tonight. All of these winds will generate choppy
or steep seas over all coastal waters this afternoon through
Thursday morning.

Morning southeast winds will be on the rise as well. The waters
from the east santa barbara channel and southward will see 5 to 10
kt Thursday morning. Local gusts to 15 kt through the san pedro
channel are possible. These winds will expand Friday morning to
all nearshore waters (including the central coast). Local gusts to
15 to 20 kt are possible around the channel islands, and through
the san pedro channel.

There is a possibility for a large southeast swell to impact the
waters Sunday through Tuesday from tropical storm ivo. A swell
from this direction would cause strong surges around harbors,
including avalon and long beach, as well as large breaking waves
near the coast. Stay tuned as details develop.

Beaches 21 228 pm.

Tropical storm ivo, currently about 600 miles south of the
southern tip of baja california, will generate a southeasterly
swell reaching california Sunday through Tuesday. The peak should
occur Sunday afternoon through Monday morning with a period
around 14 seconds. While the peak swell heights will most likely
fall between 3 and 5 feet, there is a 20 percent chance for a
range of 5 and 7 feet.

Dangerous rip currents and large breaking waves on rock jetties
are certain. Surf heights should reach 4 to 6 feet over south
facing beaches, but could exceed the 7 foot high surf advisory
levels for los angeles county during the peak.

There is a small risk for impactful coastal flooding. The highest
tides will be in the early evening, and should reach a modest 5.5
to 6.0 feet. If the peak swell ends up 3 to 5 feet, flooding
impacts would be minor and mainly in the form of beach erosion. If
the swell height ends up closer to 7 feet, more impactful flooding
would be possible for the vulnerable areas like pebbly beach in
avalon and the long beach peninsula if unprotected.

Lox watches warnings advisories
Ca... Wind advisory in effect until 3 am pdt Thursday for zones
39-52. (see laxnpwlox).

Pz... Small craft advisory in effect until 9 pm pdt this evening
for zone 645. (see laxmwwlox).

Small craft advisory in effect until 3 am pdt Thursday for
zone 650. (see laxmwwlox).

Gale warning in effect until 3 am pdt Thursday for zones
670-673-676. (see laxmwwlox).

Hazard potential outlook (sat-wed)
Elevated surf and strong rip currents are possible at area beaches
early next week.

Public... Mw
aviation... Sirard
marine... Kittell
beaches... Kittell
synopsis... B
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46222 - San Pedro, CA (092) 19 mi50 min 72°F3 ft
46221 - Santa Monica Bay, CA (028) 24 mi47 min 71°F3 ft
OHBC1 - 9410660 - Los Angeles, CA 24 mi61 min 63°F1008.1 hPa
46253 25 mi43 min 68°F3 ft
AGXC1 25 mi55 min WSW 14 G 17
PFDC1 26 mi55 min SSW 6 G 7
46256 27 mi43 min 66°F3 ft
PXAC1 27 mi55 min NNW 6 G 8
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 28 mi33 min W 7.8 G 9.7 69°F 1008.5 hPa67°F
BAXC1 28 mi55 min S 8.9 G 9.9
PFXC1 28 mi55 min SW 8.9 G 9.9
PSXC1 28 mi55 min N 1.9 G 4.1
PRJC1 29 mi55 min WSW 17 G 19
ICAC1 - 9410840 - Santa Monica Pier 35 mi61 min W 8 G 8.9 69°F 70°F1008.8 hPa

Wind History for Angels Gate, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Avalon Catalina Airport, CA14 mi22 minN 010.00 miFair88°F55°F33%1006.9 hPa

Link to 5 minute data for KAVX

Wind History from AVX (wind in knots)
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Last 24hrSW6W8W8W7NW6NW5W5NW5N5W5NW4CalmSW3W4CalmCalmW4NW3W44W6SW6W5Calm
1 day agoSW3SW10W5NW11NW8W7NW5NW5NW4NW3SW6W7W6NW3CalmCalmNW4W4W8W7SW8SW7SW6SW6
2 days agoW9SW4SW6SW4S4CalmSW4CalmSW3CalmCalmE5E3NE3CalmNW4353W5W5W5W5SW7

Tide / Current Tables for Catalina Harbor, California
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Catalina Harbor
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Wed -- 01:05 AM PDT     3.76 feet High Tide
Wed -- 06:20 AM PDT     Sunrise
Wed -- 07:12 AM PDT     1.64 feet Low Tide
Wed -- 11:45 AM PDT     Moonset
Wed -- 01:54 PM PDT     4.32 feet High Tide
Wed -- 07:33 PM PDT     Sunset
Wed -- 08:39 PM PDT     2.01 feet Low Tide
Wed -- 11:10 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.63.83.63.32.82.21.81.61.72.12.63.23.84.24.34.23.73.22.72.32.122.22.5

Tide / Current Tables for Catalina Harbor, California (2)
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Catalina Harbor
Click for Map
Wed -- 01:01 AM PDT     3.72 feet High Tide
Wed -- 06:20 AM PDT     Sunrise
Wed -- 07:16 AM PDT     1.61 feet Low Tide
Wed -- 11:45 AM PDT     Moonset
Wed -- 01:53 PM PDT     4.28 feet High Tide
Wed -- 07:33 PM PDT     Sunset
Wed -- 08:38 PM PDT     1.98 feet Low Tide
Wed -- 11:10 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.63.73.63.22.82.21.81.61.722.63.23.84.24.34.13.73.22.72.3222.22.5

Weather Map and Satellite Images
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GOES Local Image of Southwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for Los Angeles/Oxnard, CA (20,4,5,8)
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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.