Marine Weather and Tides
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 7:01AM||Sunset 4:51PM||Monday December 11, 2017 2:38 PM PST (22:38 UTC)||Moonrise 12:50AM||Moonset 1:19PM||Illumination 40%|
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|PZZ670 Point Piedras Blancas To Point Sal From 10 To 60 Nm- 220 Pm Pst Mon Dec 11 2017 |
Tonight..NW winds 5 to 10 kt, becoming N 10 to 15 kt after midnight. Wind waves 2 ft or less. W swell 5 to 6 ft at 15 seconds.
Tue..N winds 10 to 15 kt. Wind waves 2 ft or less. W swell 6 to 7 ft at 14 seconds, building to 8 ft at 13 seconds in the afternoon.
Tue night..NW winds 10 to 20 kt. Wind waves 2 to 3 ft. W swell 7 to 9 ft at 13 seconds.
Wed..NW winds 10 to 20 kt with gusts to 25 kt. Wind waves 2 to 4 ft. W swell 7 to 8 ft at 13 seconds.
Wed night..NW winds 10 to 20 kt with gusts to 25 kt. Wind waves 2 to 4 ft. W swell 6 to 7 ft at 13 seconds.
Thu..NW winds 10 to 15 kt. Wind waves 2 ft or less. W swell 7 to 8 ft at 16 seconds.
Thu night..N winds 5 to 10 kt. Wind waves 2 ft or less. W swell 8 to 9 ft at 16 seconds.
Fri..NW winds 15 to 20 kt with gusts to 25 kt. Combined seas 9 to 11 ft.
Sat..N winds 15 to 25 kt. Combined seas 9 to 11 ft.
|PZZ600 220 Pm Pst Mon Dec 11 2017 |
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 22z...or 2 pm pst...a 1042 mb surface high was located over idaho. Smoke from the thomas fire may locally reduce visibilities down to 1 sm across the east santa barbara channel through Tuesday. Increasing northwest winds Friday into Saturday may reach gale levels across the outer waters north of point conception.
7 Day Forecast for Marine Location Near Morro Bay city, CAHourly EDIT Help
Area Discussion for - Los Angeles/Oxnard, CA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 klox 112219|
area forecast discussion
national weather service los angeles oxnard ca
220 pm pst Mon dec 11 2017
updated fire section
A high and offshore winds will persist through Friday for dry and
smokey conditions with above normal temperatures. The onshore flow
over the weekend will bring a slight cooling trend.
Short term (tdy-thu)
very similar weather conditions expected across the 4 county area
through mid week. Light offshore flow generating 15-25 mph santa
anas across ventura and la counties (some isolated gusts to 35 mph
in the mountains) but no sundowners expected in sb county which
is good news for people in the vicinity of the thomas fire. There
have been some ridge winds along the santa ynez range generally in
the 10-15 mph range but that's about it and even lighter down at
lower elevations. The pattern changes very little through mid week
so what you see today is what you'll likely get through thu.
Temperatures will remain 10-15 degrees above normal in most areas
except where thick smoke is obscuring the sun.
Long term (fri-mon)
an upper low will move into the pac NW Friday and into the rockies
Saturday. Onshore trends ahead of it will cool temps a few degrees
fri Sat but still well above normal. Models going back and forth
on how much offshore flow will develop behind it Sunday and Monday
but the 12z runs were pretty light with the gradients. So a slight
warm up expected Sun Mon with the weak offshore push but at this
time it doesn't look like we'll see any significant santa anas or
sundowners from it.
Aviation 11 1800z
at 1816z at klax, there was no marine inversion.
Good confidence in tafs except for ksbp, ksmx, ksba, koxr and
kcma where periods of MVFR CIGS and MVFR ifr vis are possible at
Klax... Very good confidence in taf. Any east winds should remain
less than 7 knots.
Kbur... Very good confidence in taf.
Marine 11 200 pm.
For the inner waters south of point conception, winds will remain
below SCA strength tonight through Wednesday.
The near shore waters north of point sal will remain below sca
level through at least early Friday.
Elsewhere, winds and seas are expected to remain below small
craft advisory levels through Thursday, and then rise to SCA level
from the northwest on Friday. There is a 30 percent chance of gale
level winds for the outer waters north of point conception
sometime Friday or Saturday.
There will be areas of smoke from the thomas fire over portions
of the coastal waters, mainly from the waters west of ventura
county through the santa barbara channel and over the outer|
waters. Local visibilities could possibly drop to near one
nautical mile or lower at times.
Fire weather 11 100 pm.
The red flag warnings have changed. It has been extended to 8 pm
Wednesday for the los angeles and ventura interior mountains. It has
been extended to 8 pm Tuesday for the ventura coasts, ventura
valleys, the santa clarita valley, and the santa monica mountains.
It is no longer in effect for the los angeles coasts, the san
gabriel valley, and the san fernando valley due to the winds aloft
being more easterly than before, which has weakened the winds
significantly in those areas.
Little change is expected through Thursday. The humidities will
remain incredibly dry nearly everywhere with extremely poor
overnight recoveries. The extended period of offshore flow will
continue over los angeles and ventura counties, but will be half as
strong as what occurred last week. Expect daily peak gusts in the 20
to 40 mph range... But some weakening is expected Wednesday into
San luis obispo and santa barbara counties will continue to see
periods of north to east winds (gusts of 15 to 25 mph) through
Thursday morning, including areas near the thomas fire. While these
winds are not sundowner winds in terms of strength and source, they
will combine with the continued warm and very dry conditions to
result in elevated to near critical fire weather conditions. In
addition, the air mass will be fairly unstable above the thomas fire
through Wednesday, resulting in a greater risk for large fire plumes
which will locally enhance winds near the fire.
Some improvement is expected for Friday into Saturday as the winds
shift to more westerly, but more offshore flow is possible beginning
Saturday night or Sunday.
If fire ignition occurs, very rapid spread and extreme fire behavior
is likely. Those near current wildfires need to stay aware of and
follow official evacuation orders. Everyone needs to exercise
extreme caution when handling any potential fire ignition
sources... Such as campfires, cigarettes, welding and brush clearing
Lox watches warnings advisories
Ca... Red flag warning in effect until 8 pm pst Tuesday for zones
240-244>246-288. (see laxrfwlox).
Red flag warning in effect until 8 pm pst Wednesday for zones
253-254. (see laxrfwlox).
Hazard potential outlook (thu-mon)
critical fire weather conditions possible Thursday with light
offshore winds and single digit humidities.
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|46215 - Diablo Canyon, CA (076)||13 mi||42 min||63°F||4 ft|
|PSLC1 - 9412110 - Port San Luis, CA||18 mi||51 min||NNE 1.9 G 2.9||63°F||56°F||1022.5 hPa|
|CPXC1||18 mi||39 min||Calm G 1||62°F||1022.2 hPa||52°F|
|46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA||30 mi||49 min||SW 1.9 G 3.9||62°F||60°F||5 ft||1022.3 hPa (-1.5)|
Wind History for Port San Luis, CA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|San Luis Obispo, San Luis Obispo County-Mc Chesney Field, CA||19 mi||43 min||N 0||10.00 mi||Smoke||84°F||24°F||11%||1021.3 hPa|
Wind History from SBP (wind in knots)
|1 day ago||N||NW||N||Calm||E||E||E||Calm||Calm||Calm||Calm||Calm||SW||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm|
|2 days ago||NW||NW||SW||E||S||NE||E||E||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||Calm||SE||Calm||Calm||N||NW |
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Morro Beach |
Click for Map
Mon -- 12:49 AM PST Moonrise
Mon -- 05:39 AM PST 4.78 feet High Tide
Mon -- 07:02 AM PST Sunrise
Mon -- 12:04 PM PST 1.52 feet Low Tide
Mon -- 01:19 PM PST Moonset
Mon -- 04:51 PM PST Sunset
Mon -- 05:38 PM PST 3.62 feet High Tide
Mon -- 11:38 PM PST 0.90 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Port San Luis |
Click for Map
Mon -- 12:48 AM PST Moonrise
Mon -- 05:17 AM PST 5.10 feet High Tide
Mon -- 07:01 AM PST Sunrise
Mon -- 11:45 AM PST 1.52 feet Low Tide
Mon -- 01:18 PM PST Moonset
Mon -- 04:51 PM PST Sunset
Mon -- 05:16 PM PST 3.71 feet High Tide
Mon -- 11:13 PM PST 0.92 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  Help
|Weather Map ||IR Satellite Image from GEOS|
GOES Local Image of Southwest EDIT
Wind Forecast for Los Angeles/Oxnard, CA (17,4,5,8)(on/off)  Help
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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.