Sunday, June25, 2017 L-36.com


Marine Weather and Tides
Avilla 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 5:48AMSunset 8:22PM Sunday June 25, 2017 1:52 AM PDT (08:52 UTC) Moonrise 6:40AMMoonset 8:59PM Illumination 2% Phase: Waxing Crescent; Moon at 1 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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PZZ645 Point Piedras Blancas To Point Sal Westward Out To 10 Nm- 902 Pm Pdt Sat Jun 24 2017
.small craft advisory in effect from Sunday morning through Sunday evening...
Tonight..NW winds 10 to 20 kt with local gusts to 25 kt in the evening...becoming 10 to 15 kt with gusts to 20 kt. Combined seas 4 to 5 ft dominant period 8 seconds. Patchy fog after midnight.
Sun..NW winds 10 to 20 kt with gusts to 25 kt by the afternoon. Combined seas 4 to 5 ft dominant period 6 seconds. Patchy fog in the morning.
Sun night..NW winds 10 to 20 kt with gusts to 25 kt in the evening...becoming 15 to 20 kt. Combined seas 4 to 5 ft dominant period 6 seconds. Patchy fog after midnight.
Mon..Winds variable 10 kt or less...becoming nw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. NW swell 3 to 4 ft at 6 seconds. Patchy fog in the morning.
Mon night..NW winds 10 to 20 kt with gusts to 25 kt in the evening...becoming 10 to 15 kt. Wind waves 2 to 4 ft. NW swell 3 to 4 ft at 6 seconds. Patchy fog after midnight.
Tue..Winds variable 10 kt or less...becoming nw 20 to 30 kt in the afternoon. Combined seas 4 to 6 ft dominant period 7 seconds. Patchy fog in the morning.
Tue night..NW winds 20 to 30 kt in the evening...becoming 10 to 20 kt. Combined seas 4 to 6 ft dominant period 7 seconds. Patchy fog after midnight.
Wed..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 3 to 5 ft. Patchy fog.
Thu..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 4 to 5 ft. Patchy fog.
PZZ600 902 Pm Pdt Sat Jun 24 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 1017 mb surface low centered about 500 nm west of point conception, while a 998 mb thermal low was located near the california-arizona border. Winds will continue to increase through Sunday night.

7 Day Forecast for Marine Location Near Avilla Beach, CA
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location: 35.17, -120.74     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 250635
afdlox
area forecast discussion
national weather service los angeles oxnard ca
1135 pm pdt Sat jun 24 2017

Aviation discussion updated...

Synopsis
A strong ridge of upper-level high pressure over southern arizona
will continue very warm conditions away from the coast through
early next week. Closer to the coast, a persistent marine layer
should moderate temperatures and continue mainly night through
morning low clouds and fog. A trough of low pressure off the
california coast will weaken high pressure aloft Tuesday and
bring a cooling trend as onshore flow strengthens.

Short term (sat-tue)
some mid level moisture combined with extreme heating and
associated instability to generate some high based thunderstorm
activity this afternoon across the mountains and antelope valley.

Since the lower levels of the atmosphere were so dry, very little
rain fell with these storms, with dry lightning and gusty
downdraft winds being the main threats. With the loss of daytime
heating, the thunderstorm activity has ended this evening. As far
as low clouds and fog are concerned, it will mostly be focused
across the central coast and la county coast tonight into Sunday
morning.

The main weather story continues to be the long duration heat
wave over interior sections of southwest california. Record high
temperature at lancaster (110 degrees) today, with records tied at
palmdale (109 degrees) and sandberg (96 degrees). The combination
of a slight increase in heights and a weak northerly flow near
the surface on Sunday morning will bring increasing boundary layer
temperatures to much of the region on Sunday. The antelope valley
and mountains will continue to see the very hot conditions where
heat warnings and advisories have been in effect this entire week.

The most noticeable increase in temperatures tomorrow will be
across the valleys where there will once again be some triple
digit readings in warmest locations. With projected temperatures
of 100-105 degrees in the santa clarita valley on Sunday, have
included them in the heat advisory product with the evening
update. Some gusty sundowner winds will also bring warming
temperatures to the santa ynez mountains and sba south coast next
couple of evenings. While sba- smx gradient is expected to reach
-4 mb tonight as well as Sunday and Monday nights, there is not
much upper level wind support. As a result, expecting winds to be
fairly localized between gaviota and goleta, with gusts locally
reaching 35 to 40 mph in favored areas. The combination of hot
and dry conditions along with locally gusty winds will continue
to bring elevated fire danger and even brief critical fire
weather conditions through Monday across interior sections of the
forecast area... See fire discussion below for more details.

*** from previous discussion ***
a slow cooling trend will begin Monday and continue into Tuesday
as the ridge aloft weakens and a trough approaches or and northern
ca. Marine lyr likely will remain confined to the central coast
and la county as there's a strong enough northwest gradient to
limit the northward push of the low clouds through the bight.

Long term (wed-sat)
cooling trend to continue into Wed and then little change thu
before a ridge begins to develop Friday into Saturday and temps.

Marine lyr expected to deepen and expand to all coast valleys by
mid week but clear off to the beaches. High temps should fall back
to normal levels Tue or Wed then a little below normal Thu before
rebounding slightly going into the weekend.

Aviation 25 06z.

At 0545z at klax... The inversion was around 900 feet. The top of
the inversion was around 3000 feet with a temperature of about 33
degrees celsius.

Overall... Low to moderate confidence in the current coastal tafs
and moderate to high confidence in the remaining tafs. Vlifr lifr
conditions are already being established at central coast sites.

Similar conditions are expected at ksmo... Klax... And klgb though
not until the 09z-11z time period and possibly even closer to
daybreak. There is a thirty percent chance that conditions will
only drop into the MVFR category... As is most likely to be the
lowest category for ksba... Koxr... And kcma if they do not
remainVFR. There is a twenty percent chance of MVFR conditions at
kvny and kbur around daybreak. Any reduced conditions should beVFR
by 18z. Otherwise and elsewhere conditions will beVFR.

Klax... Low to moderate confidence in the current taf. Vlifr lifr
conditions are forecast to move over the airfield in the 09z-11z
timeframe but already look slower to develop and may be delayed
until closer to daybreak. There is a thirty percent chance that
conditions will only drop into the MVFR category.VFR conditions
will prevail by 18z and continue until marine clouds return about
26 10z. No east winds stronger than seven knots are expected
during the forecast period.

Kbur... Moderate confidence in the current taf. There is a twenty
percent chance of MVFR conditions by daybreak. OtherwiseVFR
conditions will prevail through the forecast period.

Marine 24 900 pm.

Winds will continue to gradually increase through the weekend. A
small craft advisory remains in effect for the outer waters
through early Monday morning, but this advisory will likely be
needed through at least Wednesday. Across the inner waters, there
is a 70 percent chance of small craft advisory level winds
developing each afternoon and evening across the northern
nearshore waters and the east santa barbara channel. Local gusts
up to 25 kt could also develop across the portion of the inner
waters from point mugu to san mateo point west of santa catalina
island. In addition, 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.

Fire weather 24 800 pm.

Hot and dry conditions will continue through Monday. The hot and
unstable 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. Gusty west to northwest winds will
impact interior portions of the forecast area through Monday.

For los angeles county, the focus of strongest winds will be the
i-5 corridor in the mountains as well as the antelope valley where
gusts between 30 and 40 mph can be expected. For santa barbara
county, the strongest sundowner winds will be focused across the
western portions of the santa ynez range and south coast (mainly
from gaviota to goleta), with gusts in the 30 to 40 mph range each
evening. Humidities in the single digits and teens can be
expected across the mountains, deserts, and interior valleys. In
addition, localized humidities falling to between 15 and 25
percent can be expected in the santa ynez mountains and adjacent
canyons where the downslope sundowner winds develop.

The combination of hot and dry conditions with locally gusty winds
will bring elevated fire weather concerns to interior sections
through Monday, with brief critical conditions likely each
afternoon and evening in wind prone areas. 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>54-88. (see laxnpwlox).

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

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

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

Small craft advisory in effect until 3 pm pdt Monday for
zones 670-673-676. (see laxmwwlox).

Hazard potential outlook (tue-sat)
no significant hazards expected.

Public... Gomberg mw
aviation... Kj
marine... Hall
fire... Gomberg
synopsis... Hall
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSLC1 - 9412110 - Port San Luis, CA 1 mi52 min NNW 2.9 G 4.1 57°F 60°F1014.6 hPa (+0.0)
46215 - Diablo Canyon, CA (076) 7 mi62 min 55°F3 ft
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 21 mi62 min NNW 14 G 16 57°F 57°F4 ft1013.8 hPa (+0.0)
PTGC1 - Point Arguello, CA 41 mi52 min N 29 G 31 55°F 1012.7 hPa (+0.0)

Wind History for Port San Luis, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Luis Obispo, San Luis Obispo County-Mc Chesney Field, CA7 mi56 minNW 810.00 miOvercast57°F55°F96%1013.6 hPa
Santa Maria Public Airport/Capt G Allan Hancock Field, CA24 mi61 minWNW 86.00 miFog/Mist56°F55°F100%1014 hPa

Wind History from SBP (wind in knots)
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Last 24hrNW5W6W9NW11NW8NW8N4NW13NW12W11NW16NW14NW15NW18NW14NW15NW14NW14NW15NW10NW10NW9NW6NW8
1 day agoSW3S3SW4SW4SW3SW4CalmW3CalmCalmW6NW7W8SW73NW9NW11NW11NW9NW7NW4NW7NW6NW6
2 days agoSE3CalmS3CalmSE3S3CalmSE3CalmCalmSW5SW7SW6SW10W73NW63W4SW3SW3CalmSW5SW5

Tide / Current Tables for Avila, California
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Avila
Click for Map
Sun -- 05:36 AM PDT     -4.23 feet Low Tide
Sun -- 05:50 AM PDT     Sunrise
Sun -- 07:41 AM PDT     Moonrise
Sun -- 12:13 PM PDT     1.52 feet High Tide
Sun -- 05:02 PM PDT     -0.72 feet Low Tide
Sun -- 08:21 PM PDT     Sunset
Sun -- 09:59 PM PDT     Moonset
Sun -- 11:04 PM PDT     3.52 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.91.5-0.2-1.9-3.3-4.1-4.2-3.6-2.4-10.21.11.51.40.80.1-0.5-0.7-0.50.21.22.33.23.5

Tide / Current Tables for Morro Bay, California
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Morro Bay
Click for Map
Sun -- 05:49 AM PDT     Sunrise
Sun -- 07:05 AM PDT     -0.84 feet Low Tide
Sun -- 07:41 AM PDT     Moonrise
Sun -- 01:28 PM PDT     3.15 feet High Tide
Sun -- 06:10 PM PDT     1.98 feet Low Tide
Sun -- 08:22 PM PDT     Sunset
Sun -- 10:00 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.44.83.82.61.40.3-0.5-0.8-0.60.11.122.83.13.12.92.52.122.12.53.34.24.9

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 (4,6,7,8)
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Ground Weather Radar Station Vandenberg AFB, 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.