Marine Weather and Tides
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 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.
|Sunrise 5:51AM||Sunset 8:05PM||Wednesday May 23, 2018 3:11 PM PDT (22:11 UTC)||Moonrise 1:29PM||Moonset 1:40AM||Illumination 66%|
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|PZZ673 Waters From Pt. Sal To Santa Cruz Island Ca And Westward 60 Nm Including San Miguel And Santa Rosa Islands- 205 Pm Pdt Wed May 23 2018 |
Tonight..NW winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell nw 3 to 4 ft at 10 seconds and S 3 ft at 16 seconds.
Thu..Winds variable 10 kt or less, becoming sw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell nw 3 to 4 ft at 12 seconds and S 3 ft at 15 seconds.
Thu night..W winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell nw 4 ft at 12 seconds and S 3 ft at 15 seconds.
Fri..NE winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell nw 3 to 4 ft at 11 seconds and S 3 ft at 14 seconds.
Fri night..NW winds 10 to 20 kt. Wind waves 2 to 3 ft. NW swell 4 to 5 ft at 11 seconds.
Sat..NW winds 10 to 20 kt with gusts to 25 kt, becoming 20 to 30 kt in the afternoon. Combined seas 5 to 7 ft.
Sat night..NW winds 20 to 30 kt. Combined seas 8 to 9 ft.
Sun..NW winds 15 to 25 kt with gusts to 30 kt. Combined seas 7 to 9 ft.
Mon..NW winds 10 to 20 kt. Wind waves 2 to 3 ft. NW swell 5 to 7 ft.
|PZZ600 205 Pm Pdt Wed May 23 2018 |
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 21z...or 2 pm pdt...a 1018 mb high was located 700 nm sw of point conception and a 1008 mb low was near las vegas. A long period southerly swell will continue to move through the waters into Thursday.
7 Day Forecast for Marine Location Near Lompoc, CAHourly EDIT Help
Area Discussion for - Los Angeles/Oxnard, CA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 klox 232032|
area forecast discussion
national weather service los angeles oxnard ca
132 pm pdt Wed may 23 2018
Synopsis 23 929 am.
A trough of low pressure will push into central california early
this weekend before departing into the central rockies early next
week. This will support a cooling trend through Saturday with
temperatures likely warming to near normal in many areas early
next week. Night to morning low clouds will continue to be
widespread through at least this weekend.
Short term (tdy-sat) 23 124 pm.
Gloomy may gray conditions expected to continue at least through
Saturday for most areas. The upper low that moved through
yesterday will be followed by another one late Thursday through
Saturday. While there was some lowering of the marine layer depth
today, it obviously had very little impact on our weather
conditions, and tonight the inversion will either remain the same
or deepen with the next low approaching so expecting similar
gloomy conditions thu-sat with some drizzle at times, mainly
south of pt conception and especially upslope areas of eastern of
la county. The exceptions being the far interior and mountains
above 5000'. Also, gusty sundowner winds are expected to develop
by Friday afternoon across SRN sb county and continue through
Saturday, possibly reaching advisory levels at times, so low
clouds will likely be cleared out from there. Otherwise, lots of
clouds, drizzle at times, below normal temps, and gusty winds in
the av and SRN sb county.
Long term (sun-wed) 23 131 pm.
The upper low is expected to slowly move east by Sunday, resulting
in at least weak ridging and warming aloft that will lower the
marine layer depth through early next week. At the same time
onshore flow will be weakening so most areas should see a
noticeable warming trend, though most significant inland with
valley highs back up into the 80s. There will still be a solid
marine layer for coast and most valleys but it will clear much
earlier for the valleys while possibly lingering near the coast
into the afternoon. Sundowner winds expected to diminish Sunday
with no significant wind issues through the middle of next week.
Aviation 23 1848z.
At 1741z, the marine inversion at klax was around 3900 ft deep. The
top of the inversion was around 5600 feet with a temperature of 13
Moderate confidence overall in the 18z tafs. Low clouds with MVFR
conditions will persist into this afternoon for most coast and vly
airfields before improving toVFR mid to late afternoon into the
early evening. Low clouds with mostly MVFR conditions can be
expected to redevelop at the coastal and vly airfields this evening
to later tonight then persist thru late Thu morning. There is
uncertainty in the timing of the improvement toVFR this afternoon
and development of the low clouds this evening which could be off + -
an hour or two.
For kwjf and kpmd, there is hi confidence inVFR tafs thru thu
morning. Gusty SW winds will affect these airfields this afternoon|
and evening as well.
Klax... Moderate confidence overall in the 18z taf. Low clouds with
vfr CIGS can be expected thru the afternoon into early this evening.
The CIGS should then lower to MVFR aft about 03z then persist thru
thu morning before improving toVFR by Thu afternoon. There is
uncertainty in the timing of the development of the low clouds this
evening which could be off + - an hour or two.
Kbur... Moderate confidence overall in the 18z taf. Low clouds with
MVFR conditions can be expected from TAF issuance to about 23z with
cigs improving toVFR thru the early evening. Low clouds with MVFR
cigs should redevelop around 06z then persist thru Thu morning.
There is a 30%-40% chance the low clouds may not improve toVFR this
afternoon and early evening. There is also uncertainty in the timing
of the development of the low clouds this evening which could be an
hour or two too late in the fcst.
Marine 23 125 pm.
For the outer waters, high confidence in the current forecast.
Winds and seas will remain below small craft advisory (sca) levels
through Friday. For Friday night through Sunday, there is a 60%
chance of SCA level northwest winds across the southern portion of
the outer waters from pt. Conception to san nicolas island. There
will be a mixed swell with shorter periods from the NW and long
periods from the s. Confidence is somewhat lower (50%) for sca
level gusts for the northern portion of the outer waters from
Saturday afternoon through Sunday.
For the inner waters, generally high confidence in the current
forecast. For the waters north of point sal, winds and seas will
remain below SCA levels through Monday, except for a 50% chance
of SCA level winds Saturday night. For the waters south of point
conception, winds and seas will remain below SCA levels through
Friday. For Friday night through Sunday, there is a 60% chance of
sca level winds at times, especially across western sections of
A long period southerly swell will continue to move through the
coastal waters through Thursday. Locally rough conditions may
occur at local harbor entrances, especially those with southerly
Lox watches warnings advisories
Ca... Beach hazards statement in effect through Thursday evening
for zones 40-41-87. (see laxcfwlox).
Hazard potential outlook (sat-wed)
Advisory level sundowner winds are possible for western portions
of the sb south coast this weekend.
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|
|46054 - SANTA BARBARA W 38 NM West of Santa Barbara, CA||8 mi||31 min||NW 7.8 G 9.7||56°F||1015.2 hPa|
|46218 - Harvest, CA (071)||14 mi||41 min||56°F||6 ft|
|PTGC1 - Point Arguello, CA||15 mi||71 min||N 4.1 G 5.1||54°F||1016.4 hPa (+0.0)|
|NTBC1 - Santa Barbara, CA - 9411340||44 mi||41 min||SW 8 G 8.9||59°F||1015.5 hPa|
|46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA||47 mi||81 min||WNW 5.8 G 7.8||55°F||57°F||5 ft||1016.3 hPa (+0.0)|
Wind History for Santa Barbara, CA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Lompoc, Lompoc Airport, CA||20 mi||15 min||W 12||10.00 mi||Fair||65°F||51°F||61%||1015.5 hPa|
Wind History from LPC (wind in knots)
|1 day ago||W||NW||W||NW||NW||NW||NW||NW||NW||NW||NW||NW||NW||W||W||Calm||Calm||Calm||NW||W|
|2 days ago||NW|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
|Oil Platform Harvest (Topex Project) |
Click for Map
Wed -- 12:08 AM PDT 1.95 feet Low Tide
Wed -- 02:40 AM PDT Moonset
Wed -- 05:31 AM PDT 4.09 feet High Tide
Wed -- 05:55 AM PDT Sunrise
Wed -- 12:16 PM PDT 0.08 feet Low Tide
Wed -- 02:29 PM PDT Moonrise
Wed -- 07:01 PM PDT 4.86 feet High Tide
Wed -- 08:04 PM PDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
EDIT (on/off)  Help One Week of Data
|Point Arguello |
Click for Map
Wed -- 12:10 AM PDT 1.79 feet Low Tide
Wed -- 02:40 AM PDT Moonset
Wed -- 05:41 AM PDT 3.87 feet High Tide
Wed -- 05:54 AM PDT Sunrise
Wed -- 12:11 PM PDT -0.02 feet Low Tide
Wed -- 02:28 PM PDT Moonrise
Wed -- 07:07 PM PDT 4.70 feet High Tide
Wed -- 08:04 PM PDT Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Weather Map and Satellite Images(on/off)  HelpWeather Map
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 (18,4,5,8)(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.