Thursday, October1, 2020
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Marine Weather and Tides
Avalon, CA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
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 6:47AMSunset 6:38PM Thursday October 1, 2020 8:24 AM PDT (15:24 UTC) Moonrise 7:00PMMoonset 6:32AM Illumination 100% Phase: Full Moon; Moon at 14 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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PZZ655 Inner Waters From Point Mugu To San Mateo Pt. Ca Including Santa Catalina And Anacapa Islands- 321 Am Pdt Thu Oct 1 2020
Today..NW winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 11 seconds and S 2 to 3 ft at 15 seconds.
Tonight..W winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 12 seconds and S 2 ft at 14 seconds.
Fri..Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 15 seconds and S 2 ft at 14 seconds.
Fri night..W winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft at 13 seconds and sw 2 ft at 14 seconds.
Sat..Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft at 12 seconds and sw 2 ft at 14 seconds.
Sat night..W winds 10 to 15 kt in the evening, becoming S 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 12 seconds and S 3 ft at 14 seconds.
Sun..S winds 5 to 10 kt early, becoming W 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 3 ft. Patchy fog.
Mon..W winds 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 3 ft. Patchy fog.
PZZ600 321 Am Pdt Thu Oct 1 2020
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 10z, or 3 am pdt, a 1025 mb high was centered in utah with a ridge extending to a 1022 mb high about 200 nm west of seattle. A 1008 mb thermal low was centered in arizona. The high off seattle with move southward and strengthen through Friday.


7 Day Forecast for Marine Location Near Avalon, CA
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location: 33.51, -118.64     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 011203 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 503 AM PDT Thu Oct 1 2020

SYNOPSIS. 01/237 AM.

Strong high pressure along with light offshore flow will result in very hot temperatures in most areas through the end of the week. Temperatures will begin to cool slightly by Friday but will remain well above normal through the weekend.

SHORT TERM (TDY-SAT). 01/242 AM.

One more big day of heat today. Gradients are about 1 mb offshore than they were at this time ydy. Hgts remain at 592 DM. Max temps will be very similar to ydy except there will likely be a big warm up along the Central Coast's beach areas which were spared from the heat ydy by a persistent marine layer that is not there this morning. Max temps today will be 15 to 25 degrees above normal with a few Central Coast locations a whopping 30 degrees above normal!

An excessive heat warning for the Santa Monica Mtn has been added to the current raft of warnings for today. While the rest of the area save for the Antelope Vly remain under heat advisories. Please see the product LAXNPWLOX for all of the details about this dangerous heat event.

The offshore push as well as a strong inversion with max temps of 90 degrees at 1400 ft has kept many low temps in 80s and even 90s so far tonight with only a little additional cooling likely. These very warm overnight lows will compound the danger from the hot afternoon temps.

Onshore trends and slight hgt falls will bring 5 to 7 degrees of cooling to the coasts and lower vlys with 2 to 4 degrees of cooling elsewhere. Enough cooling to eliminate the excessive heat warnings but not enough to eliminate the need for heat advisories.

The ridge settles southward on Saturday and weakens some. Hgts fall to about 588 DaM. More importantly the onshore flow increases a little more. (Still not enough to bring any marine layer to the coasts) There will be 4 to 5 degrees cooling everywhere except the Central Coast which will see 5 to 10 degrees of cooling. The beaches and near coastal areas will fall to 3 to 5 degrees above normal but areas further inland will still be 10 to 15 degrees above normal.

LONG TERM (SUN-WED). 01/256 AM.

The EC no longer agrees with the GFS and now develops an oddly persistent dry upper low off of Pt Conception. This soln does not not agree with the preponderance of the ensemble forecast members and its soln was discounted.

The GFS seems much more reasonable GFS soln which calls for the west coast ridge to weaken each day Tuesday and then to move eastward Wed and Thu as an east Pac trof moves in from the west.

More importantly moderate onshore flow returns which will bring back the marine layer and the night through morning marine layer clouds. Look for another round of 4 to 8 degrees of cooling. On Monday there will be an additional 2 to 3 degrees of cooling. Temps will then not change much Tue and Wed. Even with all the cooling max temps on Monday will remain 5 to 10 degrees above normal.

If the GFS is correct in its day 7 to 10 forecast there will be substantial cooling at the end of next week as a larger trof swings through west coast bringing possible rain as far south as Monterey county.

AVIATION. 01/1149Z.

At 12Z at KLAX, there was no marine layer. There was a sfc based inversion with a top near 23500 ft with a temp of 35 C.

Clear skies with VFR conditions expected across the entire region through the period.

KLAX . High confidence in the 12Z CAVU TAF. Good confidence that there will be no east wind component greater than 5 kt.

KBUR . High confidence in the 12Z CAVU TAF.

MARINE. 01/500 AM.

For the outer waters, conds have dropped below Small Craft Advisory (SCA) levels and are expected to remain so thru early to mid afternoon. Then, SCA conds are likely this afternoon thru late into the weekend. There is a 30% chance for occasional Gale force wind gusts late Fri or Friday evening into Sat evening.

For the inner waters N of Pt. Sal, there is a 40% chance of SCA level during the afternoon and evening hours today and Sat. SCA level winds are likely during the afternoon and evening hours Fri.

For the inner waters S of Pt. Conception, there is a 30-40% chance of SCA level NW to W winds across western portion of the Santa Barbara Channel this afternoon/evening and again Fri afternoon and evening. Otherwise, SCA conds are not expected thru Mon.

LOX WATCHES/WARNINGS/ADVISORIES. CA . Heat Advisory in effect until 8 PM PDT Friday for zones 34>41-51>54-88. (See LAXNPWLOX). Excessive Heat Warning in effect until 8 PM PDT this evening for zones 44>46-547. (See LAXNPWLOX). Heat Advisory in effect from 8 PM this evening to 8 PM PDT Friday for zones 44>46-547. (See LAXNPWLOX). Red Flag Warning in effect until 9 AM PDT this morning for zones 239-252. (See LAXRFWLOX). PZ . Small Craft Advisory in effect from 3 PM this afternoon to 3 AM PDT Monday for zone 670. (See LAXMWWLOX). Small Craft Advisory in effect until 3 AM PDT Monday for zones 673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (SAT-WED).

No significant hazards expected.



PUBLIC . Rorke AVIATION . DB MARINE . DB SYNOPSIS . EB/Smith

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46222 - San Pedro, CA (092) 19 mi33 min 70°F3 ft
46221 - Santa Monica Bay, CA (028) 24 mi61 min 71°F3 ft
OHBC1 - 9410660 - Los Angeles, CA 24 mi54 min 67°F1013.2 hPa
46253 25 mi28 min 64°F3 ft
AGXC1 25 mi120 min NE 4.1 G 5.1
PFDC1 26 mi126 min NE 2.9 G 2.9
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 27 mi34 min WNW 1.9 G 3.9 70°F 70°F4 ft1012.6 hPa68°F
46256 27 mi28 min 65°F3 ft
PXAC1 27 mi120 min N 1 G 1
BAXC1 28 mi120 min ESE 2.9 G 2.9
PFXC1 28 mi66 min E 2.9 G 5.1
PSXC1 28 mi66 min E 1 G 1.9
PRJC1 29 mi66 min NE 2.9 G 2.9
ICAC1 - 9410840 - Santa Monica Pier 35 mi54 min 72°F 70°F1013.2 hPa
46268 36 mi54 min 71°F 70°F2 ft

Wind History for Angels Gate, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Avalon Catalina Airport, CA14 mi33 minNE 410.00 miFair90°F34°F14%1011.8 hPa

Link to 5 minute data for KAVX

Wind History from AVX (wind in knots)
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Last 24hrNE8E8N5N4N3W10W7W6W7W10W11W9W11NW8NW9NW6N9N6N6N4NE7NE6NE4NE4
1 day agoN7N7N6N5W6NW7NW6NW6W3W8W9W12W7NW10NW10NW9NW9NW10NW9NW9N9N7N7NE8
2 days agoS434S433S44SW5SW3W7NW5SW3CalmCalmCalmNW4W6NW6NW4W4NW6N6N6

Tide / Current Tables for Catalina Harbor, California
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Catalina Harbor
Click for Map
Thu -- 03:52 AM PDT     0.45 feet Low Tide
Thu -- 06:31 AM PDT     Moonset
Thu -- 06:48 AM PDT     Sunrise
Thu -- 10:00 AM PDT     4.96 feet High Tide
Thu -- 02:06 PM PDT     Full Moon
Thu -- 04:06 PM PDT     0.91 feet Low Tide
Thu -- 06:37 PM PDT     Sunset
Thu -- 06:58 PM PDT     Moonrise
Thu -- 10:03 PM PDT     4.92 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.62.51.40.70.50.81.72.83.94.754.74321.20.91.11.82.83.94.64.94.7

Tide / Current Tables for Catalina Harbor, California (2)
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Catalina Harbor
Click for Map
Thu -- 03:53 AM PDT     0.45 feet Low Tide
Thu -- 06:31 AM PDT     Moonset
Thu -- 06:48 AM PDT     Sunrise
Thu -- 09:59 AM PDT     4.94 feet High Tide
Thu -- 02:06 PM PDT     Full Moon
Thu -- 04:06 PM PDT     0.91 feet Low Tide
Thu -- 06:37 PM PDT     Sunset
Thu -- 06:58 PM PDT     Moonrise
Thu -- 10:02 PM PDT     4.89 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.62.41.40.70.50.81.72.83.94.74.94.74321.20.91.11.82.83.84.64.94.7

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
Ground Weather Radar Station Santa Ana Mtns, CA
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