Thursday, October28, 2021
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Marine Weather and Tides
Pismo Beach, CA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 7:19AMSunset 6:13PM Thursday October 28, 2021 1:01 PM PDT (20:01 UTC) Moonrise 11:28PMMoonset 1:23PM Illumination 46% 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
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PZZ645 Point Piedras Blancas To Point Sal Westward Out To 10 Nm- 732 Am Pdt Thu Oct 28 2021
.small craft advisory in effect through late tonight...
Today..N winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 8 to 10 ft at 14 seconds.
Tonight..NW winds 10 to 15 kt in the evening, becoming N 5 to 10 kt. Wind waves 2 ft or less. NW swell 8 to 10 ft at 15 seconds.
Fri..Winds variable 10 kt or less, becoming nw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. NW swell 7 to 9 ft at 13 seconds.
Fri night..NW winds 10 to 20 kt. Wind waves 1 to 3 ft. NW swell 6 to 7 ft at 9 seconds. Patchy fog after midnight.
Sat..NW winds 10 to 20 kt. Wind waves 2 to 3 ft. NW swell 6 to 7 ft at 7 seconds, subsiding to 4 to 6 ft at 8 seconds in the afternoon. Patchy fog in the morning.
Sat night..NW winds 10 to 15 kt. Wind waves 1 to 3 ft. NW swell 5 to 6 ft at 7 seconds. Patchy fog after midnight.
Sun..NW winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft. Patchy fog.
Mon..SW winds 5 to 10 kt. Wind waves 2 ft or less. NW swell 5 to 7 ft. Patchy fog. Slight chance of rain.
PZZ600 732 Am Pdt Thu Oct 28 2021
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 12z, or 5 am pdt, a 1029 mb high was over nevada with an inverted trough along the southern california coast.


7 Day Forecast for Marine Location Near Pismo Beach, CA
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location: 35.03, -120.79     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 281619 AFDLOX

Area Forecast Discussion . UPDATED National Weather Service Los Angeles/Oxnard CA 919 AM PDT Thu Oct 28 2021

SYNOPSIS. 28/913 AM.

A moderate Santa Ana wind event will bring gusty northeast winds and well above normal temperatures today. The coasts and valleys will cool on Friday. More widespread cooler temperatures and cloudier skies are expected by the weekend.

SHORT TERM (TDY-SAT). 28/918 AM.

***UPDATE***

Gusty winds are being recorded in the Los Angeles and Ventura County mountains this morning as a weak to moderate Santa Ana event will last into the afternoon. At lower elevation, wind gusts are up to 30 mph at the Camarillo airport and it is already 82 there. No impactful changes from the previous discussion.

***From Previous Discussion***

Today will be the warmest day of the next 7 across the coasts and vlys as high pressure with 588 dam hgts combines with about 5 mb of offshore flow from both the east and the north. Max temps will rise 4 to 8 degrees from ydy's values and end up about 12 degrees above normal. Almost all of the csts/vlys will see max temps in the 80s with lower 90s in the warmest vly locations. The offshore gradients will be strong enough to bring advisory level gusts to the mtns and vlys either side of the LA/VTA county line. There will be gusty winds across the the Malibu strip and much of the area southern portion of the VTA coast.

A small upper low will move into Nrn CA on Friday. This will flatten the ridge. Hgts will not fall fast enough to affect max temps across the interior and max temps there will rise an additional 1 to 3 degrees (make this the warmest day of the next 7 for the area). There will be weak offshore flow in the morning which will generate some local 15 to 25 mph canyon winds. The sfc flow will quickly turn around to onshore and an earlier and stronger seabreeze (along with the lack of downslope warming) will lower max temps 5 to 10 degrees across the coasts and vlys.

The upper flow will turn cyclonic Friday night and there will be onshore flow. This will spin up a marine layer stratus deck which will cover most of the coasts. Aside from the low clouds the upper low to the north will usher in enough mid level clouds to make the afternoon partly cloudy. The clouds, cool marine air and falling hgts will all gang up and lower max temps 8 to 12 degrees. Most max temps will end up about 6 degrees blo normal.

LONG TERM (SUN-WED). 28/315 AM.

The EC and GFS along with their respective ensembles agree that a very weak ridge will move over the area on Sunday. Onshore flow will increase and its likely that the marine layer clouds will overspread the coasts and move into most of the vlys. Above the marine layer clouds enough high level clouds will move overhead to make the day a partly cloudy one. The ridge will not be strong enough to affect temps and the deeper marine layer will knock another 6 or so degrees from the max temps. Max temps will struggle to reach 70 degrees in most areas.

Both the EC and GFS bring a cold front to the area on Monday. The EC and most of its ensembles are wetter than the GFS. The operational GFS is dry and its ensemble members are quite spread out. The forecast favors the wetter EC. The combination of a deep marine layer stratus deck and mid and high level clouds from the cold front will make for a mostly cloudy day. The front will bring a slgt chc/chc of rain to the Central Coast both in the afternoon and the evening. Rainfall amounts, if any, will be insignificant. Another 2 to 4 degrees of cooling due to the clouds will make Monday the coolest day of the next 7 with max temps 8 to 12 degrees blo normal.

The EC and GFS come back into agreement for the Tue/Wed forecast and the ensemble spread noticeably decreases. Weak ridging should build into the area. Hgts will be near 580 dam each day. The onshore flow to the east will weaken and offshore flow from the north will develop. This will limit the marine layer stratus clouds and kick off a warming trend. Expect 3 to 6 degrees of warming Tuesday and another 2 to 3 degrees on Wednesday. Despite this warming max temps will still be 3 to 5 degrees blo normal.

AVIATION. 28/1521Z.

At 1430Z, there was surface-based inversion at KLAX. The top of the inversion was 1300 feet with a temperature of 25 degrees Celsius.

Overall, high confidence in 18Z TAFs as CAVU conditions will persist through the TAF period. There may be some light LLWS and turbulence across the mountains and valleys through 22Z.

KLAX . High confidence in 18Z TAF as CAVU conditions will persist. No significant easterly wind component is forecast.

KBUR . High confidence in 18Z TAF as CAVU conditions will persist.

MARINE. 28/821 AM.

For the Outer Waters, high confidence in current forecast. Small Craft Advisory (SCA) level winds and seas will continue through Saturday night. For Sunday and Monday, winds and seas will remain below SCA levels.

For the Inner Waters north of Point Sal, high confidence in current forecast. SCA level seas will continue through tonight. For Friday through Monday, winds and seas will remain below SCA levels.

For the Inner Waters south of Point Conception, moderate to high confidence in current forecast. There is a 30% chance of SCA level northeast winds this morning from Ventura south to Santa Monica. Otherwise, high confidence in winds and seas remaining below SCA levels through Monday.

LOX WATCHES/WARNINGS/ADVISORIES. CA . Wind Advisory in effect until 3 PM PDT this afternoon for zones 44>46-53-54-88-547. (See LAXNPWLOX). PZ . Small Craft Advisory in effect until 3 AM PDT Friday for zone 645. (See LAXMWWLOX). Small Craft Advisory in effect until 3 AM PDT Saturday for zones 670-673. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (SAT-WED).

No significant hazards expected.



PUBLIC . Rorke/jld AVIATION . RAT MARINE . RAT SYNOPSIS . jld

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PSLC1 - 9412110 - Port San Luis, CA 10 mi61 min S 1.9G1.9 80°F 59°F1018.3 hPa (-0.7)
46011 - SANTA MARIA - 21 NM Northwest of Point Arguello, CA 13 mi41 min W 3.9G7.8 1017.8 hPa
46215 - Diablo Canyon, CA (076) 13 mi35 min 58°F7 ft
PTGC1 - Point Arguello, CA 32 mi61 min N 8G8 62°F 1017.8 hPa (+0.0)
HRVC1 39 mi67 min 65°F 1018.1 hPa
46218 - Harvest, CA (071) 40 mi35 min 59°F14 ft
46259 42 mi65 min 61°F11 ft

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, CA17 mi65 minNW 610.00 miFair84°F47°F27%1017.4 hPa
Santa Maria Public Airport/Capt G Allan Hancock Field, CA20 mi70 minN 010.00 miFair79°F48°F34%1018.1 hPa
Lompoc, Vandenberg Air Force Base, CA23 mi63 minNNW 410.00 miFair81°F51°F35%1018.4 hPa

Link to 5 minute data for KSBP

Wind History from SBP (wind in knots)
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Last 24hrN12
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NE11NW11N5NW7NW8NW7E43N83S400SE30E3E3SE3004NW6
1 day agoW7NW14W16NW18NW14NW14NW9NW11000E300SE3SE4NW6NW5NE300--5N8
2 days agoNW12NW17NW17NW13NW15NW11NW6NW7NW4NW7N5NW4W4W5N10SW3SW4W4SW30NW7N9NW10NW8

Tide / Current Tables for Avila, California
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Avila
Click for Map
Thu -- 07:06 AM PDT     0.69 feet High Tide
Thu -- 07:20 AM PDT     Sunrise
Thu -- 08:27 AM PDT     0.68 feet Low Tide
Thu -- 01:06 PM PDT     Last Quarter
Thu -- 02:23 PM PDT     Moonset
Thu -- 02:51 PM PDT     1.65 feet High Tide
Thu -- 06:12 PM PDT     Sunset
Thu -- 11:22 PM PDT     -2.34 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-2.1
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Tide / Current Tables for Port San Luis Wharf, California
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Port San Luis Wharf
Click for Map
Thu -- 07:21 AM PDT     Sunrise
Thu -- 07:56 AM PDT     3.72 feet High Tide
Thu -- 10:47 AM PDT     3.62 feet Low Tide
Thu -- 01:06 PM PDT     Last Quarter
Thu -- 02:23 PM PDT     Moonset
Thu -- 03:53 PM PDT     4.16 feet High Tide
Thu -- 06:12 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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