Friday, May26, 2017 L-36.com


Marine Weather and Tides
Pismo 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 5:49AMSunset 8:09PM Friday May 26, 2017 7:32 PM PDT (02:32 UTC) Moonrise 5:57AMMoonset 8:19PM 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- 200 Pm Pdt Fri May 26 2017
Tonight..W winds 10 kt in the evening...becoming variable 10 kt or less. Wind waves 2 ft or less. NW swell 3 to 4 ft at 10 seconds.
Sat..Winds variable 10 kt or less...becoming nw 10 to 20 kt in the afternoon. Wind waves 1 to 3 ft. NW swell 3 to 4 ft at 9 seconds.
Sat night..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft at 10 seconds.
Sun..Winds variable 10 kt or less...becoming nw 15 to 25 kt in the afternoon. Combined seas 3 to 5 ft dominant period 9 seconds building to 4 to 6 ft in the afternoon.
Sun night..NW winds 15 to 20 kt with gusts to 25 kt in the evening...becoming 10 to 15 kt. Combined seas 4 to 6 ft dominant period 7 seconds. Patchy fog after midnight.
Mon..NW winds 10 to 15 kt...becoming 15 to 20 kt with local gusts to 30 kt in the afternoon. Wind waves 2 to 4 ft. NW swell 4 to 5 ft at 7 seconds. Patchy fog in the morning.
Mon night..NW winds 10 to 20 kt with gusts to 25 kt. Wind waves 3 to 5 ft. NW swell 4 to 5 ft at 8 seconds. Patchy fog after midnight.
Tue..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 6 to 8 ft. Patchy fog.
Wed..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 5 to 7 ft. Patchy fog.
PZZ600 200 Pm Pdt Fri May 26 2017
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park.. At 15z...or 8 am pdt...a 1003 mb low was over southern nevada while a 1027 mb high was centered 700 nm west of seattle. This pattern will change little through Friday, then a 1022 mb high will form 450 nm west of point conception over the weekend as a 1009 mb thermal low settles over southwest arizona.

7 Day Forecast for Marine Location Near Pismo Beach, CA
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location: 35.03, -120.79     debug


Area Discussion for - Los Angeles/Oxnard, CA
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Fxus66 klox 270125
afdlox
area forecast discussion... Updated
national weather service los angeles oxnard ca
625 pm pdt Fri may 26 2017

Synopsis
Night through morning low clouds are expected through the period.

An upper ridge will bring warmer temperatures to the area through
Monday. Another low pressure will move into southern cal by mid
week bringing some cooler temperatures through the end of the
week.

Short term (fri-mon)
5000-6000' "marine" lyr is keeping skies pretty cloudy so far
this afternoon with some clearing over the coastal waters and the
far interior areas. Not really expecting the trough axis to pass
through the area until late Saturday, so while heights will rise
slightly tomorrow and onshore gradients will be weakening we'll
still have a deep marine lyr to start the weekend. We should see
1000-2000 feet of lowering tonight and clearing Saturday is
expected to be pretty complete and much earlier, likely before
noon in most areas. Temps will be warmer but still below normal.

Warming trend to really kick into gear Sunday Monday as high
pressure develops over the west coast and onshore flow continues
to weaken. Likely about 10 degrees of warming for inland areas
Sunday and another 3-5 Monday. Low clouds will continue along the
coast and pushing into the lower valleys each morning.

Long term (tue-fri)
models now in pretty good agreement showing a trough developing
along the west coast Tuesday, though differ on how deep it will
develop through the end of the week. The GFS is quite a bit deeper
than the ECMWF and gem but consistent with what we saw this week.

Regardless a cooling trend will now begin Tuesday and continue
through Thursday, though the extent of the cooling still remains
to be seen. We should be turning the corner by the very end of the
week as the trough or semi-closed upper low moves east and is
replaced by another ridge. Marine lyr will remain a constant for
the coast during the night and morning hours at least and
for the valleys through mid-morning each day. Overall a pretty
quiet week of weather.

Aviation 27 0000z.

At 00z, the marine layer depth at klax was around 4300 feet deep.

The top of the inversion was 7200 feet with a temperature of 13
degrees celsius.

Low confidence in the current forecast. Ceilings at or below 5000
feet will likely persist at most terminals through at least 18z,
or as late as 22z. There is a chance of MVFR conditions between
08z and 16z.

Klax and kbur... There is a 70 percent chance of ceilings at or
below 5000 feet persisting through at least 19z, or as late as
21z. There is a 60 percent chance of MVFR conditions between 09z
and 16z.

Marine 26 100 pm.

Confident in below normal wind speeds and seas through tonight.

70 percent chance of low-end small craft advisory (sca) conditions
from the central coast to san nicolas island (outer waters) late
Saturday afternoon and night, and a 100% chance on Sunday and
Monday with gusts to 30 kt. Some of the winds will spill into the
western half of the santa barbara channel, but likely not enough
to warrant a SCA for the whole channel. These winds will create a
short period chop over all waters including the santa barbara
channel and santa monica basin (inner waters).

Lox watches warnings advisories
Ca... Wind advisory in effect until 9 pm pdt this evening for zone
59. (see laxnpwlox).

Pz... None.

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

Public... Mw
aviation... Hall
marine... Kittell
synopsis... B
weather.Gov losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSLC1 - 9412110 - Port San Luis, CA 10 mi45 min W 14 G 18 59°F 56°F1016.6 hPa
46215 - Diablo Canyon, CA (076) 13 mi43 min 58°F3 ft
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 13 mi43 min WNW 5.8 G 7.8 57°F 57°F4 ft1016.7 hPa (+0.0)
PTGC1 - Point Arguello, CA 32 mi33 min N 11 G 11 55°F 1016.6 hPa (+0.0)
HRVC1 39 mi45 min 1016.4 hPa
46218 - Harvest, CA (071) 40 mi33 min 57°F4 ft
46257 41 mi33 min 57°F4 ft

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, CA17 mi97 minWNW 1210.00 miFair66°F48°F54%1015.5 hPa
Santa Maria, Santa Maria Public Airport, CA20 mi42 minNW 1110.00 miMostly Cloudy60°F50°F70%1016.3 hPa
Lompoc, Vandenberg Air Force Base, CA23 mi95 minWNW 88.00 miFair60°F50°F72%1016.8 hPa

Wind History from SBP (wind in knots)
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Last 24hrS5S3S5S4CalmCalmS3CalmS4CalmCalmCalmCalmCalmSW6S5SW9SW11SW8S74NW9NW12NW11
1 day agoNW8S4S3S4SE4S3S3S3S3S4SE5SE6SE6SE5S8S8SW12S11SW10
G16
SW12S9S10SW6S4
2 days agoNW9NW8NW5NW5NW4W4W3NW7W6NW5N7NW7NW4CalmW3W533W8CalmS3NW12NW10NW9

Tide / Current Tables for Avila, California
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Avila
Click for Map
Fri -- 05:07 AM PDT     -3.88 feet Low Tide
Fri -- 05:51 AM PDT     Sunrise
Fri -- 06:56 AM PDT     Moonrise
Fri -- 11:33 AM PDT     1.52 feet High Tide
Fri -- 04:35 PM PDT     -1.06 feet Low Tide
Fri -- 08:08 PM PDT     Sunset
Fri -- 09:19 PM PDT     Moonset
Fri -- 10:42 PM PDT     3.59 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.30.8-0.8-2.4-3.4-3.9-3.6-2.7-1.5-0.20.91.41.510.3-0.5-1-1-0.50.41.62.73.43.6

Tide / Current Tables for Port San Luis, Pacific Ocean, California
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Port San Luis
Click for Map
Fri -- 05:22 AM PDT     -1.60 feet Low Tide
Fri -- 05:52 AM PDT     Sunrise
Fri -- 06:56 AM PDT     Moonrise
Fri -- 11:55 AM PDT     4.06 feet High Tide
Fri -- 04:46 PM PDT     1.72 feet Low Tide
Fri -- 08:08 PM PDT     Sunset
Fri -- 09:19 PM PDT     Moonset
Fri -- 10:58 PM PDT     6.45 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.33.92.10.4-0.9-1.5-1.5-0.70.51.93.13.84.13.83.12.41.91.72.134.15.36.16.4

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 (22,6,7,8)
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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.