Thursday, April26, 2018 L-36.com


Marine Weather and Tides
Casmalia, CA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:14AMSunset 7:44PM Thursday April 26, 2018 4:16 AM PDT (11:16 UTC) Moonrise 3:39PMMoonset 3:41AM Illumination 85% Phase: Waxing Gibbous; Moon at 11 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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PZZ670 Point Piedras Blancas To Point Sal From 10 To 60 Nm- 309 Am Pdt Thu Apr 26 2018
.small craft advisory in effect from this afternoon through Monday afternoon...
Today..NW winds 10 to 15 kt, becoming 15 to 25 kt in the afternoon. Combined seas 6 to 8 ft dominant period 13 seconds. Patchy fog in the morning.
Tonight..NW winds 15 to 25 kt. Combined seas 6 to 8 ft dominant period 13 seconds.
Fri..NW winds 15 to 25 kt. Combined seas 6 to 8 ft dominant period 11 seconds.
Fri night..NW winds 15 to 25 kt. Combined seas 6 to 8 ft dominant period 11 seconds.
Sat..NW winds 15 to 25 kt with local gusts to 30 kt. Combined seas 7 to 8 ft dominant period 11 seconds.
Sat night..NW winds 15 to 25 kt with local gusts to 30 kt. Combined seas 8 to 10 ft dominant period 11 seconds, subsiding to 7 to 9 ft dominant period 11 seconds after midnight.
Sun..NW winds 20 to 30 kt. Combined seas 7 to 9 ft.
Mon..NW winds 20 to 30 kt. Combined seas 8 to 10 ft.
PZZ600 309 Am Pdt Thu Apr 26 2018
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 09z...or 2 am pdt...a 1020 mb surface high was located 500 nm west of eureka. A 1006 mb low was centered near needles.

7 Day Forecast for Marine Location Near Casmalia, CA
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location: 34.7, -121.3     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 260855
afdlox
area forecast discussion
national weather service los angeles oxnard ca
155 am pdt Thu apr 26 2018

Synopsis 26 151 am.

A trough of low pressure will gradually move across the west coast
today through Saturday, bringing cooler temperatures and partly
cloudy skies to the area. Additionally, there will be the
potential for gusty west to northwest winds Friday through Monday.

On Tuesday, low pressure will move over the area, resulting in the
potential for some light precipitation for the area.

Short term (tdy-sat) 26 148 am.

Overall, 00z models in good synoptic agreement through the period.

At upper levels, low currently off the central ca coast will move
towards the ca coast today then across northern ca Friday and
Saturday. Near the surface, moderate onshore flow will prevail
with an increase in northwesterly flow Friday Saturday.

Forecast-wise, main concern in the short term will be the winds.

With good onshore gradients today, there will be some gusty
southwest to west winds across the mountains and deserts. However
at this time, any advisory-level winds look to be localized, so
will not issue any advisories at this time. Beginning tonight, the
northerly offshore gradients will begin to increase with east-west
gradients remaining onshore. So for Friday and Saturday, there is
a decent chance of widespread advisory-level west winds across
the antelope valley. Additionally with the increasing northerly
offshore gradients (sba-smx peaking around -4.4 mb), advisory
level northwest to north winds look likely Friday and Saturday
for southern santa barbara county.

Otherwise, secondary concern will be marine layer stratus.

Currently, amdar soundings indicate marine inversion based around
1400 feet. With good onshore gradients, stratus should push into
the coastal valleys and salinas valley this morning. With upper
low moving inland Friday Saturday, lowering h5 heights should
allow for the marine inversion to deepen. So, stratus should be
able to push further inland across ventura la counties Friday
morning and Saturday morning. For southern santa barbara county,
increasing northerly flow should keep area stratus-free Friday and
Saturday. For the central coast, stratus should continue tonight
and Friday morning, but will likely be stratus-free Saturday
morning due to northwesterly flow. Additionally, increasing
northerly flow could generate some clouds across the northern
mountain slopes and interior santa barbara and san luis obispo
counties Friday night and Saturday morning.

As for temperatures, expect only minor day-to-day changes for the
area with afternoon highs a couple degrees below seasonal normals.

Long term (sun-wed) 26 148 am.

Overall, 00z models in decent agreement through the extended
period. At upper levels, cyclonic flow remains over the area
Sunday Monday with a trough low moving over the area on Tuesday
then into az on Wednesday. Near the surface, decent west to
northwest flow will prevail through Monday then weaken on Tuesday
and Wednesday.

Forecast-wise, Sunday and Monday do not look too dissimilar from
Saturday. Main concern will continue to be the potential for
advisory-level sundowner winds across southern santa barbara
county. There may be some clouds across la county coast during the
night morning hours Sunday and Monday as well as across interior
sections Saturday night Sunday morning. Otherwise, skies should
remain mostly clear with temperatures a couple degrees below
seasonal normals.

On Tuesday, things become more unsettled as trough upper low moves
across the area. At this time, the GFS has a track a bit closer to
the water than the ecmwf. However both models do spit out some
precipitation across the area on Tuesday. So, will go with slight
chance of showers for all areas on Tuesday. With more westerly
track, the GFS indicates a bit more precipitation than the ecmwf,
but neither models indicates the potential for any significant
precipitation event.

On Wednesday, the upper low trough should be eastward enough to
keep any precipitation well east of the area and allow
temperatures to rebound a bit.

Aviation 26 0546z.

At 05z at klax, the marine layer was 1200 feet deep. The top of
the inversion was near 2000 feet with a temperature around 20c.

Expect widespread low clouds with generally ifr conds across all
coastal areas tonight. CIGS are expected to lift later tonight
south of pt conception, so conds should improve to MVFR across
coastal sections of l.A. Vtu counties. Ifr conds will push into
the valleys late tonight. Clearing will be fairly slow Thu morning,
generally by late morning in the valleys and early afternoon across
the coastal plain. CIGS will likely return to coastal areas Thu eve.

Klax... Moderate confidence in the 06z taf. There is a 20-30%
chance that CIGS could linger all day.

Kbur... Moderate confidence in the 06z taf. There is a 20% chance
that CIGS could arrive as early as 08z. There is a 30% chance that
cigs could linger through 20z.

Marine 25 748 pm.

High confidence in winds and seas remaining below small craft
advisory levels across the waters through Thursday morning. Winds
will likely increase across the outer waters Thursday afternoon
through much of the following week. A gale watch has been issued
for the two southern outer water zones starting Friday afternoon
and continuing through early Monday afternoon. There is a 50%
chance gale force winds will continue across the same area into
early next week. NW winds will continue to be gusty across the
northern outer waters zone but should remain below gale levels.

Expect building short period seas during this time as well that
will translate into the inner waters.

Inner waters for areas S of point conception... Waters should be
mostly quiet through Friday morning, then strong SCA level gusts
and a 40% chance that gale force winds could affect the western
portion of the eastern sba channel Friday afternoon and evening.

Gusty NW winds will become more widespread across the entire inner
waters Saturday. 70% chance for SCA winds and 30% chance for gale
force winds western portion of sba channel in the afternoon. There
will be a 40% chance for SCA across the inner waters from point
sal north on Friday, and 70% chance for Saturday. Winds should
taper off a bit Sunday for all inner water locations with a 30%
chance for a sca.

Lox watches warnings advisories
Ca... None.

Pz... Small craft advisory in effect from 3 pm this afternoon to 3
am pdt Monday for zone 670. (see laxmwwlox).

Small craft advisory in effect from 3 pm this afternoon to 3
pm pdt Friday for zones 673-676. (see laxmwwlox).

Gale watch in effect from Friday afternoon through late
Sunday night for zones 673-676. (see laxmwwlox).

Hazard potential outlook (sat-wed)
There will be potential gale force winds mainly for the outer
coastal waters during the outlook period.

Public... Thompson
aviation... Db
marine... Kaplan gomberg
synopsis... Rat
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46259 19 mi54 min 59°F7 ft
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 23 mi86 min NNW 9.7 G 12 54°F 55°F6 ft1017 hPa (-1.2)
46218 - Harvest, CA (071) 32 mi46 min 55°F7 ft
PTGC1 - Point Arguello, CA 36 mi76 min N 17 G 19 53°F 1016.8 hPa (-1.4)
46215 - Diablo Canyon, CA (076) 42 mi49 min 51°F4 ft
PSLC1 - 9412110 - Port San Luis, CA 43 mi46 min Calm G 1 51°F 56°F1017.4 hPa
CPXC1 44 mi32 min NW 1.9 G 2.9 51°F 1017.2 hPa48°F

Wind History for Port San Luis, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lompoc, Vandenberg Air Force Base, CA39 mi18 minENE 310.00 miOvercast51°F48°F92%1016.9 hPa

Wind History from VBG (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmW4W4W6W86W7NW8NW6N5N6N4NE4CalmCalmCalmCalmNW5N6NE3
1 day agoCalmCalmCalmCalm--NW3--4--W8W7W7NW7NW6NW7--3NE3CalmCalmCalmW3NW4Calm
2 days agoCalmCalmCalmCalmCalmNW4CalmW5W7W8NW8NW7NW7NW5N6N4N4NE4CalmN4NE5CalmE4Calm

Tide / Current Tables for Point Arguello, California
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Point Arguello
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Thu -- 02:14 AM PDT     0.97 feet Low Tide
Thu -- 04:38 AM PDT     Moonset
Thu -- 06:17 AM PDT     Sunrise
Thu -- 08:08 AM PDT     4.33 feet High Tide
Thu -- 02:22 PM PDT     -0.10 feet Low Tide
Thu -- 04:35 PM PDT     Moonrise
Thu -- 07:43 PM PDT     Sunset
Thu -- 08:54 PM PDT     4.86 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.11.311.11.62.53.344.34.13.52.41.30.4-0.100.61.62.83.94.64.94.53.7

Tide / Current Tables for Oil Platform Harvest (Topex Project), California
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Oil Platform Harvest (Topex Project)
Click for Map
Thu -- 02:11 AM PDT     1.05 feet Low Tide
Thu -- 04:38 AM PDT     Moonset
Thu -- 06:18 AM PDT     Sunrise
Thu -- 07:58 AM PDT     4.58 feet High Tide
Thu -- 02:23 PM PDT     -0.03 feet Low Tide
Thu -- 04:35 PM PDT     Moonrise
Thu -- 07:43 PM PDT     Sunset
Thu -- 08:46 PM PDT     5.08 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.11.41.11.21.82.73.64.34.64.33.52.51.40.500.10.71.834.24.95.14.63.7

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 (7,2,3,4)
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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.