Tuesday, June25, 2019 L-36.com


Marine Weather and Tides
San Luis Obispo, CA

Version 3.4
NOTICE
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 5:47AMSunset 8:22PM Tuesday June 25, 2019 11:19 AM PDT (18:19 UTC) Moonrise 12:19AMMoonset 12:24PM Illumination 42% Phase: Third Quarter Moon; Moon at 23 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
    EDIT      (on/off)   Help
PZZ645 Point Piedras Blancas To Point Sal Westward Out To 10 Nm- 906 Am Pdt Tue Jun 25 2019
Today..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. NW swell 3 to 4 ft at 8 seconds.
Tonight..W winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell nw 3 to 4 ft at 8 seconds and S 3 ft at 15 seconds.
Wed..Winds variable 10 kt or less, becoming nw 10 to 20 kt in the afternoon. Wind waves 1 to 3 ft. Mixed swell nw 4 ft at 8 seconds and S 3 ft at 14 seconds.
Wed night..NW winds 20 to 25 kt in the evening, becoming 10 to 15 kt. Combined seas 5 to 7 ft dominant period 9 seconds.
Thu..NW winds 10 to 15 kt, becoming 15 to 20 kt with gusts to 25 kt in the afternoon. Wind waves 2 to 4 ft. NW swell 3 ft at 10 seconds, building to 5 ft at 10 seconds in the afternoon.
Thu night..NW winds 20 to 30 kt in the evening, becoming 10 to 20 kt with gusts to 25 kt. Combined seas 7 to 8 ft dominant period 8 seconds, subsiding to 5 to 6 ft dominant period 8 seconds after midnight.
Fri..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 6 to 8 ft.
Sat..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 5 to 7 ft.
PZZ600 906 Am Pdt Tue Jun 25 2019
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 16z, or 9 am pdt, a 1021 mb surface high was located 1000 nm west of point conception,ca and a 1003 mb thermal low was centered near las vegas, nv.


7 Day Forecast for Marine Location Near San Luis Obispo, CA
   Hourly   EDIT   Help
location: 35.27, -120.66     debug


Area Discussion for - Los Angeles/Oxnard, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 klox 251606
afdlox
area forecast discussion
national weather service los angeles oxnard ca
906 am pdt Tue jun 25 2019

Synopsis 25 735 am.

Night and morning low clouds will cover the coasts and valleys
through the end of the week. Interior areas will be mostly sunny.

Breezy conditions will develop in the mountains and deserts today
through Thursday. Daily maximum temperatures will be cool through
Friday.

Short term (tdy-thu) 25 905 am.

Overall, a typical june morning across the forecast district.

Latest sounding data indicates marine inversion depth ranging from
2000 feet across the central coast to around 2800 feet across the
lax basin. Stratus has pushed well inland to the santa clarita
valley and the lower coastal slopes and some mid-level clouds are
drifting above the marine layer. Additionally, some patchy
drizzle continues to be reported. With strong onshore gradients,
stratus clearing will be slow and limited with coastal areas
likely to remain cloudy through the afternoon. With all this,
temperatures will be several degrees below seasonal normals for
most areas. Once again, gusty southwest winds will impact the
mountains and deserts, but any advisory-level winds are expected
to be localized.

Quick look at initial 12z model data indicates no major changes to
previous forecast thinking. Wednesday will likely be a mirror
image of today with a deep and extensive stratus deck and
slow limited clearing Wednesday afternoon. Temperatures on
Wednesday will remain several degrees below normal with gusty
afternoon winds across the mountains and deserts.

For Wednesday night and Thursday, h5 heights increase slightly and
offshore trends develop in the surface pressure gradients. So, the
marine inversion should be a bit more shallow with better clearing
Thursday afternoon. With the less extensive marine influence and
higher h5 heights, most coastal valley areas should warm about
2-4 degrees Thursday afternoon with near persistent temperatures
across interior sections.

Overall, current forecast looks on track for the immediate short
term. So, no updates are planned at this time.

Long term (fri-mon) 25 315 am.

Both the GFS and ec agree that the large upper low will slowly
move across washington state on Friday. Hgts do not change much
but the onshore flow to the east will weaken and actual offshore
flow will develop from the north. This will keep the clouds from
covering all of the vlys and will lead to a quicker burn off. Max
temps will rise everywhere.

The north flow will bring some local winds to the i-5 corridor as
well as the sba south coast but right now the parameters strongly
favor sub advisory gusts.

On Saturday hgts will rise a large upper high expands in from the
east. At the same time offshore flow will continue from the north
and will develop across the central coast. Between the higher hgts
squashing the marine layer down and the offshore flow pushing it
away the marine layer stratus will be confined to the sba south
coast and the la vta coasts and perhaps portions of the lower
vlys. MAX temps will jump everywhere ESP in the vlys and many
areas will see near normal temps in the afternoon.

A little mdl disagreement starts in on Sunday as the ec reasserts
the trof while the GFS keeps pushing the ridge over the area. More
ensemble members from both the GFS and ec favor the warmer gfs
solution and biased the fcst that way.

The mdl disagreement continues on Monday only more so. The ec has
a cloudier cooler soln and the GFS continues with a warmer upper
ridge soln. Looking at all of the ensembles it looks like GFS has
a better probability of verifying. The forecast continues the
Sunday weather with minimal marine layer stratus and warmer temps.

July 4th just appeared in the mdls day 10 window and unfortunately
the ec and the GFS are diametrically opposed. The ec has a cool
579 dm trof while the GFS has a roasty-toasty 591 dm upper high.

Aviation 25 1136z.

At 0838z at klax, the marine layer was 2800 feet deep. The top of
the inversion was around 3500 feet with a temperature near 20
degrees celsius.

N of point conception... Moderate confidence with ifr CIGS for
coast and kprb. 30% chance for brief lifr conds between 12z-14z.

In the current forecast. Flight cat transitions could be off by
+ - 1 hour. Moderate confidence with persistent stratus pattern
once again this evening through early Wed morning. There is a 20%
chance that CIGS might linger all day along coastal tafs.

S of point conception... Moderate confidence with MVFR cigs. There
is a 50% chance for ifr CIGS for ksba, koxr and kcma through 15z.

Flight cat transitions could be off by + - 1 hour. Moderate
confidence with persistent stratus pattern once again this evening
through early Wed morning. There is a 20% chance that l.A.

Coastal tafs might scatter out between 21-00z this afternoon.

Linger all day along coastal tafs.

Klax... Moderate confidence in the current forecast. Flight cat
transitions could be off by + - 1 hour. There is a 20% chance
that l.A. Coastal tafs scatter out between 21-00z this afternoon.

Good confidence that there will not be an east wind component
greater than 6 kt.

Kbur... Moderate to high confidence in the current forecast.

There is a 30% chance that MVFR CIGS could linger until 22z.

Marine 25 254 am.

For the outer waters, winds and seas will likely remain below
small craft advisory (sca) levels through early Wednesday, with
a 70 percent chance of SCA level winds across the northern zone
(pzz670)by Wednesday afternoon. Higher confidence that the entire
outer waters will need a SCA by Wednesday evening. Small craft
advisory winds should continue Thursday through Saturday, with a
50 percent chance of gales between Thursday afternoon and Friday
night.

For the inner waters north of point sal, winds and seas will
likely remain below SCA levels through early Wednesday, then there
is a 60 percent chance of SCA level winds each afternoon and
evening between Wednesday and Saturday.

For the inner waters south of point conception, winds and seas
will likely remain below SCA levels through early Wednesday, then
a 40 percent chance of SCA level winds across the western half of
the santa barbara channel Wednesday late afternoon and evening,
then a 50% chance each afternoon and evening between Thursday and
Saturday for the same western portion of the santa barbara channel.

Lox watches warnings advisories
Ca... None.

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

Hazard potential outlook (thu-mon)
No significant hazards expected.

Public... Thompson rorke
aviation... Kaplan
marine... Kaplan gomberg
synopsis... Phillips arnold
weather.Gov losangeles


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CPXC1 8 mi19 min SSW 4.1 G 5.1 57°F 1013.9 hPa (+1.0)53°F
PSLC1 - 9412110 - Port San Luis, CA 9 mi55 min S 6 G 7 56°F 61°F1013.8 hPa
46215 - Diablo Canyon, CA (076) 11 mi19 min 59°F4 ft
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 29 mi29 min Calm G 0 57°F 58°F4 ft1013.4 hPa (+1.0)
PTGC1 - Point Arguello, CA 48 mi79 min WNW 2.9 G 4.1 55°F 1012.7 hPa (+1.5)

Wind History for Port San Luis, CA
(wind in knots)    EDIT      (on/off)   Help
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
Last
24hr
S3
S6
S8
G13
SW6
G11
SW8
G14
SW9
G12
W8
G11
SW5
W7
SW4
S1
G4
--
SW3
--
N2
NW2
N1
W1
W2
SE4
SE4
S3
S4
S6
1 day
ago
S5
S9
SW9
G13
SE3
G6
SW6
G9
SW9
G14
SW9
G14
SW8
G11
W9
W4
W4
W2
SE2
S1
NE1
W2
G5
W2
E3
G6
SE1
N2
NE4
NW3
SE4
SE3
2 days
ago
SE3
S5
SW7
G12
SW11
G15
W13
G18
W13
G16
W11
G16
W13
G18
W7
G11
NE2
E3
N2
N1
SW1
--
SE2
NE1
E6
SE2
E4
E4
E1
SE3
S4

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Luis Obispo, San Luis Obispo County-Mc Chesney Field, CA2 mi23 minSSW 510.00 miOvercast59°F54°F83%1013.1 hPa

Wind History from SBP (wind in knots)
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
Last 24hr3CalmSW65CalmS7S5W4SW3CalmW3SW3CalmW4CalmSW3SE3CalmE4CalmCalmCalmSW4SW5
1 day ago56SW85W5W7NW9W4NW8NW6W5NW4W3W4NW3N4N4W4SW3CalmSE4S4S5Calm
2 days ago3NW6W7W5NW10NW11NW11NW11NW6NW4CalmNW5W3NW4E3SE3E4SE4CalmS3S3SE3CalmW4

Tide / Current Tables for Avila, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Avila
Click for Map
Tue -- 01:19 AM PDT     Moonrise
Tue -- 02:48 AM PDT     Last Quarter
Tue -- 03:24 AM PDT     0.43 feet High Tide
Tue -- 05:49 AM PDT     Sunrise
Tue -- 10:39 AM PDT     -1.51 feet Low Tide
Tue -- 01:25 PM PDT     Moonset
Tue -- 06:08 PM PDT     1.50 feet High Tide
Tue -- 08:21 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
0.10.20.30.40.40.3-0-0.4-0.9-1.2-1.5-1.5-1.3-0.8-0.20.411.31.51.41.10.60.2-0.2

Tide / Current Tables for Port San Luis Wharf, California
   EDIT      (on/off)   Help   One Week of Data
Port San Luis Wharf
Click for Map
Tue -- 01:19 AM PDT     Moonrise
Tue -- 02:48 AM PDT     Last Quarter
Tue -- 04:16 AM PDT     3.41 feet High Tide
Tue -- 05:49 AM PDT     Sunrise
Tue -- 11:01 AM PDT     1.16 feet Low Tide
Tue -- 01:25 PM PDT     Moonset
Tue -- 06:09 PM PDT     4.36 feet High Tide
Tue -- 08:21 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
2.62.833.33.43.43.12.72.21.71.31.21.31.72.333.74.24.44.33.93.42.92.4

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_P
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Los Angeles/Oxnard, CA (14,3,4,5)
      (on/off)   Help

Ground Weather Radar Station Vandenberg AFB, CA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.