Tuesday, March28, 2017 L-36.com


Marine Weather and Tides
Pismo Beach, CA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:51AMSunset 7:22PM Tuesday March 28, 2017 6:49 AM PDT (13:49 UTC) Moonrise 6:31AMMoonset 7:19PM Illumination 1% 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- 312 Am Pdt Tue Mar 28 2017
Today..N winds 5 to 15 kt...becoming nw 10 to 20 kt with local gusts to 25 kt in the afternoon. Combined seas 10 to 11 ft dominant period 10 seconds.
Tonight..NW winds 10 to 20 kt with local gusts to 25 kt in the evening... Becoming 5 to 15 kt. Combined seas 10 to 11 ft dominant period 11 seconds...subsiding to 7 to 9 ft dominant period 11 seconds after midnight.
Wed..N winds 10 to 15 kt. Wind waves 1 to 3 ft. NW swell 9 to 10 ft at 15 seconds.
Wed night..NW winds 15 to 20 kt with local gusts to 25 kt in the evening...becoming N 10 to 15 kt with gusts to 20 kt. Wind waves 2 to 4 ft. W swell 8 to 9 ft at 15 seconds.
Thu..NW winds 10 to 20 kt...becoming 20 to 25 kt with gusts to 35 kt in the afternoon. Combined seas 8 to 10 ft dominant period 15 seconds...building to 10 to 11 ft dominant period 14 seconds in the afternoon.
Thu night..NW winds 20 to 30 kt with gusts to 35 kt in the evening...becoming 15 to 25 kt with gusts to 30 kt. Combined seas 10 to 12 ft dominant period 14 seconds.
Fri..NW winds 20 to 30 kt with gusts to 40 kt. Combined seas 9 to 12 ft.
Sat..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 7 to 9 ft.
PZZ600 312 Am Pdt Tue Mar 28 2017
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 pst...a 1030 mb high pressure center was located 550 nm northwest of point conception and a 1006 mb low pressure center was located over northern arizona. Winds will be elevated during much of this coming week. Gales will possibly return again Thursday and Friday. Short period seas will dominate the waters due to persistent northwest winds.

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 281210
afdlox
area forecast discussion
national weather service los angeles/oxnard ca
510 am pdt Tue mar 28 2017

Aviation discussion updated...

Synopsis
Gusty north to northeast winds will slowly diminish today, and it
will be warmer. High pressure will continue the warming trend
Wednesday. An upper trough of low pressure moving to our north
will bring cooling again for Thursday and Friday with gusty
winds. Warmer weather is expected over the weekend as another
ridge builds into the region. There should be cooling on Monday as
a trough moves into the west coast

Short term (tdy-thu)
gusty north winds continued across a good portion of l.A. County,
eastern vtu county, and southern santa barbara county early this
morning. Damaging gusts to 60 mph continued across the mountains,
and while a high wind warning was in effect for the vtu and l.A.

County mountains, it has been extended through mid morning for the
sba county mountains as well. Wind advisories have also been
extended for the south coast of sba county. Otherwise, wind
advisories remain in place for most of the rest of l.A. And vtu
counties through early afternoon. Winds should begin to diminish
in coastal areas by mid morning, and in the valleys this afternoon.

An upper ridge amplifying off the west coast today will cause
heights and thicknesses, and temps aloft to rise. This will bring
several degrees of warming to the entire area today, especially
west of the mountains where compressional warming due to offshore
flow will assist in the warming process. MAX temps should reach
or exceed 80 degrees in warmer coastal and valley areas today.

The ridge will continue to build tonight and Wed and heights and
thicknesses will continue to rise. Low level flow will remain
offshore, likely enough for some gusty NE winds across l.A. And
vtu counties, but winds will probably remain advisory levels. Max
temps will jump again on wed, possibly getting close to 90
degrees in some valley areas.

An upper level trough will evolve into an upper low as it moves
through the pac NW into the great basin on thu. Gusty west to
northwest winds should develop in the mountains, in the antelope
valley and on the central coast during the afternoon as the its
dry frontal system pushes across the region and subsidence sweeps
into the area. There should be several degrees of cooling in most
areas on thu.

Long term (fri-mon)
the upper low will drift east southeastward Thu night, reaching
the four corners area Fri morning. It looks as though the wind
pattern Thu night and early Fri will be very similar to this
current wind event, with widespread advisory level winds across
the region, and possibly low end high wind warning level wind
gusts in a few locations. MAX temps on Fri should be similar to
those on Thu in most areas. An upper ridge will build into the
west coast sat, and low level flow will turn northeasterly. This
should bring significant warming to most areas, and MAX temps
will probably rise back into the 80s in the valleys. A trough will
approach the pac NW on Sunday, but heights will remain rather
high across the region, so it should remain rather warm. There
could be some cooling sun, especially across the coastal plain.

More significant and widespread cooling is expected Monday as the
trough digs down the west coast and into ca. The latest run of the
gfs suggests that some rain is not out of the question across
portions of the forecast area late Sun night into Monday. The ec
is much weaker with this trough, showing much less cooling and
little if any chance of rain.

Aviation 28/12z.

At 09z at klax... There was no notable inversion.

Overall... High confidence in the current tafs. Moderate to
strong low-level wind shear and turbulence is possible at all
terminals through 18z. There is a fifteen percent chance of lifr
conditions at kprb 13z-17z. Otherwise and elsewhereVFR conditions
will prevail.

Klax... Moderate to high confidence in the current taf. Moderate
to strong low-level wind shear and turbulence is possible through
18z. There is a twenty percent chance of east winds to 15 knots
through 16z. OtherwiseVFR conditions will prevail.

Kbur... High confidence in the current taf. Moderate to strong
low-level wind shear and turbulence is possible through 18z.

OtherwiseVFR conditions will prevail.

Marine 28/230 am.

Across the outer waters... Small craft advisory (sca) level winds
will continue through at least Thursday morning when they will
likely strengthen into gale levels through Friday.

Across the inner waters... A SCA for hazardous seas is in effect
through this afternoon south of point conception due to steep and
choppy waves. Gale level winds may affect the inner waters on
Thursday and Friday.

Lox watches/warnings/advisories
Ca... High surf advisory in effect until 2 pm pdt Wednesday for
zones 34-35. (see laxcfwlox).

Wind advisory in effect until 9 am pdt this morning for zones
39-41-87. (see laxnpwlox).

Beach hazards statement in effect through Wednesday afternoon
for zones 40-41-87. (see laxcfwlox).

Wind advisory in effect until 2 pm pdt this afternoon for
zones 44>46-88-547. (see laxnpwlox).

High wind warning in effect until 9 am pdt this morning for
zones 52>54. (see laxnpwlox).

Wind advisory in effect from 9 am this morning to 2 pm pdt
this afternoon for zones 53-54. (see laxnpwlox).

Pz... Small craft advisory for hazardous seas in effect until 3 pm
pdt this afternoon for zones 650-655. (see laxmwwlox).

Small craft advisory in effect until noon pdt Thursday for
zones 670-673-676. (see laxmwwlox).

Hazard potential outlook (thu-mon)
another round of strong and gusty northwest to north winds may
affect much of the region Thu night into Fri morning.

Public... Db
aviation... Kj
marine... Kj
synopsis... Db
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 mi50 min NNE 2.9 G 6 55°F 55°F1021.9 hPa (-0.0)
46215 - Diablo Canyon, CA (076) 13 mi60 min 54°F8 ft
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 13 mi60 min NNW 14 G 18 54°F 55°F10 ft1021.4 hPa (-0.5)
PTGC1 - Point Arguello, CA 32 mi50 min N 20 G 21 53°F 1020.3 hPa (-0.0)
HRVC1 39 mi56 min 1020.4 hPa
46218 - Harvest, CA (071) 40 mi50 min 54°F11 ft
46257 41 mi50 min 54°F12 ft

Wind History for Port San Luis, CA
(wind in knots)    EDIT      (on/off)   Help
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Last
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NW8
G13
N7
G11
N14
G21
NW14
G19
N12
G16
NW16
W12
G19
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G20
NW10
G27
NW13
G27
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G19
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G24
NW11
G22
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G20
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G16
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G17
NW11
NW11
G15
N10
G14
N5
G9
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G14
NW5
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G7
N3
G6
1 day
ago
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E1
--
NW1
W14
G18
W16
W17
W18
W13
G17
W16
G21
NW5
G14
E4
SW6
G12
W6
G10
W9
NE3
NE1
G4
--
SW2
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SW1
E1
N4
NW7
2 days
ago
W3
NE4
E4
SE1
W15
W17
W14
G17
W13
G20
NW13
G19
SW4
G10
NW7
G15
NW10
G13
NW14
G18
NW2
W6
G10
E1
SW1
N2
--
SE1
N4
--
E1
SW1
G6

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Luis Obispo, San Luis Obispo County-Mc Chesney Field, CA17 mi54 minNNW 1110.00 miFair54°F44°F69%1020.9 hPa
Santa Maria, Santa Maria Public Airport, CA20 mi59 minW 310.00 miFair47°F44°F90%1020.9 hPa
Lompoc, Vandenberg Air Force Base, CA23 mi52 minN 119.00 miFair49°F45°F86%1020.7 hPa

Wind History from SBP (wind in knots)
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Last 24hrN9N5NW11
G21
N8N13
G17
N18
G23
NW15NW20
G26
NW25
G33
NW23
G33
NW12
G23
NW10NW11NW9NW9W4CalmNW7NW7NW11NW14N13N9NW11
1 day agoW4NW6NW10W10NW8NW15
G22
NW15
G19
NW15NW16NW17
G25
NW17
G24
NW13NW16NW15NW4NW5NW5NW5NW34NW4NW6NW6NW6
2 days agoW5NW5NW8--NW6NW10NW14
G18
NW13NW14NW15NW15
G21
NW10NW13NW6NW9NW8NW7NW4NW6NW7NW10NW8NW6NW5

Tide / Current Tables for Avila, California
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Avila
Click for Map
Tue -- 04:37 AM PDT     -2.19 feet Low Tide
Tue -- 06:54 AM PDT     Sunrise
Tue -- 07:30 AM PDT     Moonrise
Tue -- 10:42 AM PDT     2.20 feet High Tide
Tue -- 04:52 PM PDT     -2.21 feet Low Tide
Tue -- 07:21 PM PDT     Sunset
Tue -- 08:18 PM PDT     Moonset
Tue -- 11:02 PM PDT     2.45 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.60.6-0.5-1.5-2.1-2.2-1.7-0.80.41.42.12.21.80.9-0.2-1.3-2-2.2-1.9-10.11.32.12.4

Tide / Current Tables for Port San Luis, Pacific Ocean, California
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Port San Luis
Click for Map
Tue -- 04:52 AM PDT     0.21 feet Low Tide
Tue -- 06:54 AM PDT     Sunrise
Tue -- 07:30 AM PDT     Moonrise
Tue -- 10:59 AM PDT     4.98 feet High Tide
Tue -- 05:05 PM PDT     0.19 feet Low Tide
Tue -- 07:21 PM PDT     Sunset
Tue -- 08:18 PM PDT     Moonset
Tue -- 11:18 PM PDT     5.33 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.63.62.41.20.40.20.61.52.73.84.754.73.82.61.40.60.20.51.32.53.84.85.3

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 (9,2,3,4)
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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.