Saturday, March28, 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 6:52AMSunset 7:22PM Saturday March 28, 2020 5:07 PM PDT (00:07 UTC) Moonrise 8:26AMMoonset 10:32PM Illumination 24% Phase: Waxing Crescent; Moon at 5 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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PZZ670 Point Piedras Blancas To Point Sal From 10 To 60 Nm- 231 Pm Pdt Sat Mar 28 2020
Tonight..NW winds 10 to 20 kt. Wind waves 2 to 3 ft. Mixed swell nw 3 to 4 ft at 7 seconds and S 2 ft at 17 seconds. Slight chance of showers.
Sun..W winds 5 to 10 kt, becoming 10 to 15 kt in the afternoon. Wind waves 2 ft or less. NW swell 3 to 4 ft at 8 seconds. Slight chance of showers.
Sun night..NW winds 10 to 15 kt with gusts to 20 kt. Wind waves 1 to 3 ft. NW swell 3 to 4 ft at 6 seconds.
Mon..N winds 10 to 15 kt with gusts to 20 kt, becoming nw 15 to 25 kt with gusts to 30 kt in the afternoon. Combined seas 5 to 6 ft dominant period 8 seconds.
Mon night..NW winds 15 to 25 kt with gusts to 35 kt. Combined seas 5 to 6 ft dominant period 8 seconds.
Tue..N winds 15 to 25 kt with gusts to 30 kt. Combined seas 6 to 8 ft dominant period 7 seconds.
Tue night..NW winds 20 to 25 kt, becoming N 15 to 25 kt with gusts to 30 kt after midnight. Combined seas 8 to 11 ft, building to 10 to 12 ft after midnight.
Wed..NW winds 10 to 20 kt with gusts to 25 kt. Wind waves 2 to 4 ft. NW swell 9 to 12 ft.
Thu..NW winds 15 to 20 kt with gusts to 25 kt. Combined seas 9 to 12 ft.
PZZ600 231 Pm Pdt Sat Mar 28 2020
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 20z, or 1 pm pdt, a 1030 mb surface high was located 600 nm sw of point conception and a 1025 mb surface high was near Monterey. A 1019 mb surface low was 250 nm W of eureka with a weak trough of low pressure extending to the sw. The trough of low pressure will move through the northern coastal waters with a chance of showers late tonight and Sunday.


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


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 282052 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 152 PM PDT Sat Mar 28 2020

SYNOPSIS. 28/119 PM.

There is a chance of light showers tonight through late Sunday with any snow remaining above major pass levels. Next week will be warm and dry with many locations reaching 80 degrees Tuesday and Wednesday.

SHORT TERM (TDY-TUE). 28/152 PM.

Weak upper level trough developing off the coast of California will bring increasing high clouds to the region today, while maintaining cool temperatures. Scattered light showers have developed today across Monterey county, with a slight chance of showers developing north of Morro Bay later this afternoon. The weak upper trough will push through the region tonight through Sunday. There will be 20-50 percent pops with this weak system, mainly north of Point Conception as well as interior areas of LA/Ventura/SBA counties. The best chance of precipitation for most of these areas is expected to be Sunday afternoon. Any rain that does fall with this system is expected to be light, with totals generally less than a tenth of an inch. Snow levels will likely remain above 5000 feet and there will not be any snow issues over the major mountain passes.

The upper trough passage will also usher in gusty west to northwest winds across portions of the forecast area Sunday afternoon into Sunday night. The strongest winds will be focused across southern SBA county, the I-5 corridor in the LA county mountains, and the Antelope Valley, where gusts between 30 and 45 mph will be common. Wind advisories may be needed for portions of these areas late Sunday.

Dry northwest flow aloft sets up on Monday, with building heights across the district. This in combination with weak offshore flow to the north will bring a warming trend on Monday, with warmest areas peaking into the mid 70s. Northerly offshore flow increases Monday night into Tuesday morning (with LAX-Bakersfield gradient expected to peak around -6 mb), which will bring additional warming to most areas on Tuesday. Warmest coastal/valley areas could even see temperatures topping 80 degrees by Tuesday. The north-south offshore pressure gradients combined with some upper level wind support will enhance gusty northerly winds across southern SBA county and I-5 corridor Monday night into Tuesday.

LONG TERM (WED-SAT). 28/327 AM.

Both the EC and GFS agree that there will be dry NW flow over the area Tue and Wed and then weak ridging on Thu and Fri. It will be dry all four days.

There will be offshore flow from both the east and north on Tuesday and this will be the warmest day for the coasts and vlys. The warmest days for the interior will be Thu and Fri under the ridge.

All four days will have warmer than normal max temps and 70s will be the order of the day, but cannot rule out a few 80 degree readings in the warmest locations.

AVIATION. 28/1800Z.

At 1730Z at KLAX, there was no marine inversion.

Moderate to hi confidence in the 18Z TAFs. VFR conditions are expected at all the airfields thru early this evening, then MVFR cigs should develop at many of the coastal and vly airfields, with a 50%-60% chance of development. The cigs are expected to improve back to VFR for many of the airfields by early Sun morning, except may linger til late morning at KSBP and KSMX. The timing of onset and dissipation of the MVFR cigs may be off +/- an hour or two. Otherwise VFR conditions should prevail thru late Sun morning.

KLAX . Moderate to hi confidence in the 18Z TAF. VFR conditions are expected thru this evening, then MVFR cigs should develop 07Z-17Z, with a 60% chance of development. The cigs are expected to improve back to VFR aft 17Z Sun and continue thru Sun afternoon. The timing of onset and dissipation of the MVFR cigs may be off +/- an hour or two.

KBUR . Moderate to hi confidence in the 18Z TAF. VFR conditions are expected thru this evening, then MVFR cigs should develop 07Z-12Z, with a 60% chance of development. The cigs are expected to improve back to VFR aft 12Z Sun and continue thru late Sun morning. The timing of onset and dissipation of the MVFR cigs may be off +/- an hour or two.

MARINE. 28/121 PM.

Across the outer waters, Small Craft Advisory (SCA) winds and short period seas will cont thru late tonight for the southern two zones (PZZ673/676). There is a 30-40% chance that winds will reach SCA levels across the northern zone this evening. There is a 30%-40% chance of SCA level winds Sun afternoon into Sun night, except SCA level winds are likely across the southern zone. SCA level winds are likely Mon thru Wed. SCA level seas can be expected for Thu.

Across the inner waters north of Pt. Sal, there is a 20% chance of SCA level winds this evening. SCA level winds are likely during evening hours Mon and Tue. Otherwise, winds and seas will remain generally below SCA levels Sun thru Thu.

Across the inner waters south of Pt Conception, there is a 30% chance of SCA level winds across western portions of the SBA Channel this evening. SCA level winds are likely across much of the area Sun afternoon/evening, then there is a 40% chance of SCA level winds Mon afternoon/evening for th SBA Channel. Winds and seas will then remain below SCA levels Tue through Thu.

Overall, there will be an extended period of hazardous short period seas under 9 seconds through at least Tue.

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

.HAZARD POTENTIAL OUTLOOK (TUE-SAT).

No significant hazards expected.



PUBLIC . Gomberg/Rorke AVIATION . Sirard MARINE . Sirard SYNOPSIS . Kj

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46215 - Diablo Canyon, CA (076) 13 mi37 min 60°F3 ft
CPXC1 18 mi43 min WNW 18 G 20 58°F 1020.6 hPa46°F
PSLC1 - 9412110 - Port San Luis, CA 18 mi67 min W 14 G 21 58°F 58°F1021 hPa (-1.6)
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 30 mi37 min WNW 18 G 19 56°F 58°F1021 hPa49°F

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 mi71 minNW 1610.00 miA Few Clouds59°F45°F60%1020.3 hPa

Link to 5 minute data for KSBP

Wind History from SBP (wind in knots)
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Last 24hrNW14NW11NW11N7N6N4SE8N10
G16
NW7CalmCalmCalm3CalmE3CalmNW3W3W5NW5NW15NW14NW16NW14
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1 day agoNW14W9NE5N4N4W3W7S4NW3CalmCalmCalmCalmCalmCalmCalmN4W7NW9NW9
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2 days agoW14W8NW7NW13N3CalmSE4S3SE3E3CalmCalm3CalmCalmSE3W3W9SW12NW12NW16NW15
G19
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G20

Tide / Current Tables for Morro Beach, Estero Bay, California
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Morro Beach
Click for Map
Sat -- 12:31 AM PDT     4.49 feet High Tide
Sat -- 06:54 AM PDT     Sunrise
Sat -- 07:20 AM PDT     0.60 feet Low Tide
Sat -- 09:25 AM PDT     Moonrise
Sat -- 01:27 PM PDT     3.12 feet High Tide
Sat -- 06:33 PM PDT     1.69 feet Low Tide
Sat -- 07:22 PM PDT     Sunset
Sat -- 11:32 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.44.44.13.32.41.60.90.60.71.11.72.32.83.13.12.82.421.71.722.53.23.8

Tide / Current Tables for Port San Luis, Pacific Ocean, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Los Angeles/Oxnard, CA (20,4,5,8)
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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.