Saturday, August8, 2020
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Marine Weather and Tides
Morro Bay, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 6:15AMSunset 8:00PM Saturday August 8, 2020 4:06 AM PDT (11:06 UTC) Moonrise 10:04PMMoonset 9:56AM Illumination 80% Phase: Waning Gibbous; Moon at 19 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- 203 Am Pdt Sat Aug 8 2020
Today..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. NW swell 5 to 6 ft at 10 seconds. Patchy fog in the morning.
Tonight..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. NW swell 5 to 6 ft at 10 seconds. Patchy fog after midnight.
Sun..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. NW swell 5 to 6 ft at 10 seconds. Patchy fog in the morning.
Sun night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. NW swell 5 to 6 ft at 10 seconds. Patchy fog after midnight.
Mon..Winds variable 10 kt or less, becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. NW swell 5 to 6 ft at 11 seconds. Patchy fog in the morning.
Mon night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. NW swell 5 to 6 ft at 11 seconds. Patchy fog after midnight.
Tue..NW winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell nw 4 to 6 ft and S 3 ft. Patchy fog.
Wed..NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 4 to 5 ft. Patchy fog.
PZZ600 203 Am Pdt Sat Aug 8 2020
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 pdt, a 1032 mb high pressure center was located 950 nm west of eureka and a 1008 mb thermal low was located over western arizona. The pattern will not change much through the forecast period.


7 Day Forecast for Marine Location Near Morro Bay, CA
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location: 35.39, -120.93     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 080957 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 257 AM PDT Sat Aug 8 2020

SYNOPSIS. 08/140 AM.

Skies will be clear except for varying amount of night through morning coastal low clouds. There will be below normal temperatures through early next week despite a slow warming trend.

SHORT TERM (TDY-MON). 08/232 AM.

In the absence of any eddy low clouds have been slow to form south of Pt Conception this morning. There are some patches of clouds just forming near the LA county coast and near Pt Mugu. There really is nothing to trigger a stratus explosion and it is likely that there will not be that much in the way of low clouds this morning. No change north of Pt Conception, however, the region is blanketed by stratus and some beaches will likely not clear again. Most areas away from the beaches will see 2 to 4 degrees of warming due to higher hgts. Despite the warming max temps will end up 3 to 6 degrees blo normal.

It looks like there will be just enough of any eddy as well as a westerly onshore push to bring clouds to coasts south of Pt Conception (Central Coast clouds will continue). Hgts will rise to 590 DaM and this will prevent much of any vly penetration (xcp for the Santa Ynez Vly). That said there is still a pretty good chance that the eddy will not develop and there will again be only minimal stratus south of Pt Conception. Look for 1 to 3 degrees of warming with max temps coming in only a few degrees blo normal.

The Central Coast stratus will continue unabated on Monday. There is a much better chc of low clouds for the coastal areas as a better eddy is forecast to spin up. The high hgts will still keep the stratus mostly confined to the coasts. Hgts and gradients change little from Sunday and max temps should not vary from Sunday's values by more than a degree.

Continued gusty onshore winds across the interior through Monday, especially across the Antelope Valley and adjacent foothills where wind gusts of 25 to 35 mph will be common, except isolated gusts of 40 to 45 mph near Lake Palmdale. The gusty onshore winds coupled with the warming temperatures and lowering humidities will result in elevated fire weather concerns this weekend into Monday across the Antelope Valley and adjacent foothills.

LONG TERM (TUE-FRI). 08/257 AM.

Not much of interest through the extended period ending on Friday. Srn CA will be under dry SW flow as it sits between an upper high to the SE and trof to the NW. Starting Wednesday the upper high begins to assert itself and hgts will slowly rise each day Wed through Fri. The GFS and the EC disagree on the sfc grads. The GFS keeps very similar grads (Moderate onshore both to the East and North) through the period while the EC brings in offshore trends each day beginning Wednesday. By Friday the EC develops actually offshore flow. The EC gradient solution seems a little odd and will favor the GFS soln.

Look for the night through morning low clouds to continue along the coasts but with little or no vly intrusion due to the high hgts.

As far as temperatures go there will be little change in max temps Tuesday compared to Monday. Then there should be 1 to 2 degrees of warming Wed through Fri. Max temps will generally be 1 to 3 degrees above normal on Friday.

Aside from the typical westerly winds across the Antelope Vly there will be no wind issues through the period.

Both the EC and the GFS hint at the possibility of a monsoon pattern on days 9 and 10 (the 16th and 17th) but even if this pattern does come true any convection that forms would likely be the south and east of LA county.

AVIATION. 08/0645Z.

At 0530 at KLAX . The marine layer was 1300 feet deep. The top of the inversion was around 2200 feet with a temperature of 21 C.

Low confidence in KLGB, KLAX, KSMO, KOXR and KCMA TAFs where there is almost a 50 percent chc of no cigs. Better confidence in KSBA TAF with only a 20 percent chc of IFR cigs 13Z-17Z. At KSMX and KSBP there is a 30 percent chc that conds will not drop below IFR. Good confidence in inland TAFs.

KLAX . Low confidence in TAF with a near 50 percent chc of no cigs. There will not be any east winds greater than 6 kts.

KBUR . Good confidence in CAVU TAF. There is a 20 percent chc of 5SM HZ 13Z-16Z.

MARINE. 08/134 AM.

Other than some possible lingering local gusts to 25 kt from Point Conception to San Nicolas Island through the morning, high confidence that winds and seas will remain below Small Craft Advisory level through Wednesday across all waters. However, there is a 30% chance of SCA level gusts from Point Conception to San Nicolas Island on Tuesday and Wednesday.

Patchy fog, locally dense with visibility under one mile, will likely continue through the weekend.

LOX WATCHES/WARNINGS/ADVISORIES. CA . NONE. PZ . Small Craft Advisory in effect until 3 AM PDT early this morning for zones 673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (MON-FRI).

No significant hazards expected.



PUBLIC . Rorke AVIATION . Rorke MARINE . Stewart SYNOPSIS . 30

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46215 - Diablo Canyon, CA (076) 13 mi40 min 56°F4 ft
CPXC1 18 mi48 min Calm G 1 58°F 1015.6 hPa56°F
PSLC1 - 9412110 - Port San Luis, CA 18 mi48 min Calm G 0 58°F 57°F1015.7 hPa
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 30 mi26 min N 1.9 G 3.9 58°F1015.2 hPa

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, CA19 mi70 minN 010.00 miOvercast59°F55°F87%1014.8 hPa

Link to 5 minute data for KSBP

Wind History from SBP (wind in knots)
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Last 24hrS3S3CalmCalmSE3SW3Calm--NW16NW16NW16NW14NW13NW13NW13NW9NW9NW5NW6NW4W3E3CalmCalm
1 day agoCalmCalmW4SW3SW3SW344S5NW11NW14NW14NW13NW11NW13NW11NW9NW6NW6W4CalmSE4S3S3
2 days agoS4SE7E5CalmCalmNW5NW13NW12
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Tide / Current Tables for Morro Beach, Estero Bay, California
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Morro Beach
Click for Map
Sat -- 01:07 AM PDT     4.47 feet High Tide
Sat -- 06:17 AM PDT     Sunrise
Sat -- 07:49 AM PDT     0.87 feet Low Tide
Sat -- 10:56 AM PDT     Moonset
Sat -- 02:26 PM PDT     4.14 feet High Tide
Sat -- 07:59 PM PDT     Sunset
Sat -- 08:12 PM PDT     2.16 feet Low Tide
Sat -- 11:03 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.24.54.33.83.12.21.510.91.11.72.53.23.84.14.13.83.32.82.42.22.22.63

Tide / Current Tables for Port San Luis, California
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Port San Luis
Click for Map
Sat -- 01:03 AM PDT     4.58 feet High Tide
Sat -- 06:17 AM PDT     Sunrise
Sat -- 07:47 AM PDT     0.89 feet Low Tide
Sat -- 10:55 AM PDT     Moonset
Sat -- 02:27 PM PDT     4.42 feet High Tide
Sat -- 07:58 PM PDT     Sunset
Sat -- 08:17 PM PDT     2.30 feet Low Tide
Sat -- 11:02 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.44.64.43.93.12.31.510.91.21.82.63.44.14.44.443.532.52.32.42.73.1

Weather Map
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wmap_P
GEOS 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 (7,2,3,4)
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Ground Weather Radar Station Vandenberg AFB, CA
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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 numerous 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.