Sunday, August20, 2017 L-36.com


Marine Weather and Tides
Lompoc, 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 6:25AMSunset 7:43PM Sunday August 20, 2017 12:55 AM PDT (07:55 UTC) Moonrise 4:13AMMoonset 6:10PM Illumination 4% Phase: Waning Crescent; Moon at 28 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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PZZ673 Waters From Pt. Sal To Santa Cruz Island Ca And Westward 60 Nm Including San Miguel And Santa Rosa Islands- 819 Pm Pdt Sat Aug 19 2017
Tonight..W winds 5 to 10 kt...becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 4 to 5 ft at 10 seconds and S 3 ft at 14 seconds. Patchy fog after midnight.
Sun..Winds variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 5 ft at 10 seconds and S 3 ft at 14 seconds. Patchy fog in the morning.
Sun night..S winds 10 kt in the evening...becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 5 ft at 10 seconds and S 3 ft at 13 seconds. Patchy fog after midnight.
Mon..Winds variable 10 kt or less...becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 4 to 5 ft at 10 seconds. Patchy fog in the morning.
Mon night..NW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 3 to 4 ft at 10 seconds. Patchy fog after midnight.
Tue..NW winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 4 ft and S 3 ft. Patchy fog.
Wed..NW winds 10 to 20 kt with gusts to 25 kt. Wind waves 2 to 4 ft. Mixed swell W 4 ft and S 3 ft. Patchy fog.
PZZ600 819 Pm Pdt Sat Aug 19 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 1030 mb surface high was about 600 nm W of eureka and a 1008 mb low was near las vegas.

7 Day Forecast for Marine Location Near Lompoc, CA
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location: 34.38, -120.53     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 200638 aaa
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
1138 pm pdt Sat aug 19 2017

Synopsis
Near to below normal temperatures and a persistent marine layer
should be expected through the first half of next week due to a
nearly stationary low pressure center offshore. There is an
outside chance of showers and thunderstorms through early next
week for the mountains and desert.

Short term (sat-tue)
a few thunderstorms developed this afternoon across the
mountains of ventura and santa barbara counties. These
storms were slow moving and radar estimated rainfall rates
up to one inch per hour. The thunderstorm activity has now
diminished for the evening. Satellite imagery showing low
clouds returning to some coastal areas this evening. With
weak upper level low pressure system off the coast and
strengthening onshore flow, looking for the marine layer
to further deepen overnight into Sunday morning, likely
reaching 2500 to 3000 feet. As a result, looking for low
clouds and fog to spread into most valley locations
overnight, as well as the lower coastal slopes of
la ventura counties. Also, there is the potential for
some patchy drizzle late tonight into Sunday morning.

Still sufficient moisture and instability to warrant slight
chance of afternoon thunderstorms on Sunday across the
mountains of ventura and santa barbara counties. With steering
flow winds from the southeast on Sunday, any storm development
over the mountains could drift into the cuyama valley as well as
southeast portions of slo county mountains which were included in
the convective threat in evening update. Precipitable water
values will once again be around 1 inch on Sunday afternoon,
however still fairly high instability CAPE parameters which could
trigger a few thunderstorms. Upper level steering flow will once
again be fairly weak, so any storms will be slow moving and
capable of producing brief heavy rainfall. Other storm threats
on Sunday include small hail, gusty winds, and cloud to ground
lightning which could trigger fire ignitions, especially
considering the dry fuels in place.

*** from previous discussion ***
model solutions continue hint at the possibility of isolated to
scattered showers and thunderstorms each afternoon and evening
through Monday, and maybe into Tuesday. Favorable negative lifted
index and positive CAPE values exist over the mountains the next
several days. The steering flow is quite light today and any
storms that develop could be slow-moving. As a result, local
flooding could develop in or near showers and thunderstorms this
afternoon and evening.

Away from the mountains - the weak area of low pressure continues
to spin counterclockwise over the southern california bight and
models indicate it will stay nearly stationary until Wednesday.

The main impact of this will be to keep the marine layer present
and fairly thick, deepening to 2000-2500 feet by Sunday morning.

Coastal locations will see very little day-to-day weather change
while this feature persists.

Possible additional marine layer deepening could take place on
Monday, lifting the marine layer depth to closer to 2500-3500
feet Monday. With the favorable flow pattern through the mixed
layer and some weak instability aloft with the trough, the marine
layer stratus could get lifted enough to squeeze out some drizzle
and mentions of drizzle are in the forecast. With the peak of the
eclipse at around 10:15am on Monday you may need to move a bit
inland for a cloud-free view.

Conditions on Tuesday will be quite similar to those on Monday as
far as the coastal clouds and temperatures. The likelihood for
afternoon showers drops off considerably on Tuesday but remains
possible.

Long term (wed-sat)
the trough will linger over the region into Wednesday, likely
keeping an extended period of below normal temperatures, strong
onshore flow in place, and a deep marine layer over the area.

By Thursday the trough exits our forecast area and ridging begins
to develop. 500mb heights could be above 590dm by next weekend. A
slow warming trend inland, and gradual decreased extent of the
morning stratus intrusion should result.

Aviation 20 0635z.

At 06z, the marine layer depth was around 1900 feet deep at klax.

The top of the marine inversion was around 2600 feet deep with a
temperature near 20 degrees celsius. There was another inversion
up to around 6000 feet.

Predominantly MVFR conditions, with local ifr conditions north of
point conception, will spread into coastal and valley terminals
through 10z. There is a chance of ifr conditions in drizzle
between 10z and 16z, higher confidence south of point conception.

Vfr conditions should redevelop between 16z and 20z. There is a
slight chance of MVFR conditions lingering throughout Sunday
afternoon at coastal terminals.

Klax... MVFR conditions will develop through 08z. There is a 60
percent chance of ifr conditions in drizzle between 10z and 16z.

Vfr conditions should redevelop between 18z and 20z. There is a 20
percent chance of MVFR conditions lingering throughout Sunday
afternoon at coastal terminals.

Kbur... MVFR conditions will spread into kbur between 07z and 09z.

There is a 60 percent chance of ifr between 10z and 16z in
drizzle.VFR conditions should redevelop between 17z and 19z.

Marine 19 800 pm...

for the outer waters, high confidence in current forecast.

Winds and seas are expected to remain below small craft advisory
(sca) levels through Tuesday. On Wednesday, there is a 50% chance
of winds increasing to SCA levels.

For the inner waters, high confidence in current forecast. Winds
and seas are expected to remain below SCA levels through
Wednesday, though local gusts to 20 kt are possible through the
san pedro channel through late this evening.

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

Pz... None.

Hazard potential outlook (tue-sat)
isolated showers and thunderstorms for the mountains and desert
cannot be ruled out for Tuesday.

Public... Gomberg jld
aviation... Hall
marine... Mw smith
synopsis... Hall fisher
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46054 - SANTA BARBARA W 38 NM West of Santa Barbara, CA 8 mi25 min SSW 3.9 G 5.8 63°F 64°F1013.3 hPa60°F
HRVC1 10 mi37 min 1013.6 hPa
46218 - Harvest, CA (071) 14 mi25 min 62°F5 ft
PTGC1 - Point Arguello, CA 15 mi55 min SSE 1 G 1 60°F 1013.8 hPa (+0.4)
46053 - E. SANTA BARBARA - 12NM Southwest of Santa Barbara, CA 37 mi25 min NNW 1.9 G 3.9 63°F 64°F1014.5 hPa60°F
NTBC1 - Santa Barbara, CA - 9411340 44 mi79 min W 1.9 G 2.9 63°F 1014 hPa
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 47 mi65 min Calm G 1.9 62°F 62°F6 ft1013.3 hPa (+0.3)

Wind History for Santa Barbara, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lompoc, Lompoc Airport, CA20 mi59 minW 310.00 miOvercast62°F59°F90%1013.8 hPa

Wind History from LPC (wind in knots)
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Last 24hrW5CalmW3CalmCalmW4CalmW3--CalmW43SW7W10W13W11W12W11W10NW7W6NW4W3NW3
1 day agoCalmCalmCalmCalmCalmCalmCalmE3CalmW3W6--W12W13W14
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2 days ago--CalmCalmCalmCalmCalmCalmCalmCalmCalm4W7W11W14W14--W11W13W11W9W8W5W3W3

Tide / Current Tables for Oil Platform Harvest (Topex Project), California
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Oil Platform Harvest (Topex Project)
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Sun -- 03:45 AM PDT     -0.80 feet Low Tide
Sun -- 05:13 AM PDT     Moonrise
Sun -- 06:27 AM PDT     Sunrise
Sun -- 10:06 AM PDT     4.41 feet High Tide
Sun -- 03:14 PM PDT     1.64 feet Low Tide
Sun -- 07:10 PM PDT     Moonset
Sun -- 07:43 PM PDT     Sunset
Sun -- 09:25 PM PDT     6.54 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.11.50.2-0.6-0.8-0.30.723.24.14.44.23.62.721.71.82.53.64.85.96.56.45.7

Tide / Current Tables for Point Arguello, California
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Point Arguello
Click for Map
Sun -- 03:45 AM PDT     -0.81 feet Low Tide
Sun -- 05:12 AM PDT     Moonrise
Sun -- 06:27 AM PDT     Sunrise
Sun -- 10:17 AM PDT     4.42 feet High Tide
Sun -- 03:20 PM PDT     1.77 feet Low Tide
Sun -- 07:11 PM PDT     Moonset
Sun -- 07:43 PM PDT     Sunset
Sun -- 09:33 PM PDT     6.26 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.21.60.2-0.6-0.8-0.30.71.93.144.44.33.72.92.21.81.92.53.44.55.56.26.25.6

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 (3,6,7,8)
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Ground Weather Radar Station Vandenberg AFB, 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.