Thursday, July29, 2021
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Marine Weather and Tides
Seal 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 6:01AMSunset 7:56PM Thursday July 29, 2021 5:43 PM PDT (00:43 UTC) Moonrise 11:37PMMoonset 11:39AM Illumination 69% Phase: Waning Gibbous; Moon at 20 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- 204 Pm Pdt Thu Jul 29 2021
Tonight..W winds 10 to 20 kt, becoming variable 10 kt or less after midnight. Wind waves 1 to 3 ft. Mixed swell W 2 to 3 ft at 6 seconds and S 2 ft at 14 seconds. Patchy fog after midnight.
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 6 seconds and S 2 ft at 14 seconds. Patchy fog in the morning.
Fri night..W winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 2 to 3 ft at 5 seconds. Patchy fog after midnight.
Sat..NW winds 5 to 10 kt, becoming W 10 to 15 kt in the afternoon. Wind waves 1 to 3 ft. W swell 2 to 3 ft at 5 seconds. Patchy fog in the morning.
Sat night..W winds 10 to 15 kt, becoming variable 10 kt or less after midnight. Wind waves 2 ft or less. W swell 3 ft at 7 seconds.
Sun..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 7 seconds and S 2 ft at 12 seconds.
Sun night..W winds 10 to 20 kt, becoming variable 10 kt or less after midnight. Wind waves 2 to 3 ft. Mixed swell W 2 to 3 ft at 7 seconds and S 2 ft at 12 seconds. Patchy fog after midnight.
Mon..W winds 15 to 20 kt. Combined seas 4 to 5 ft. Patchy fog.
Tue..W winds 10 to 15 kt. Wind waves 1 to 3 ft. Mixed swell W 2 to 4 ft and S 2 ft. Patchy fog.
PZZ600 204 Pm Pdt Thu Jul 29 2021
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 1024 mb high was located 700 nm west of point conception. A 1005 mb low was centered near las vegas.


7 Day Forecast for Marine Location Near Seal Beach, CA
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location: 33.74, -118.12     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 300037 AFDLOX

Area Forecast Discussion . UPDATED National Weather Service Los Angeles/Oxnard CA 537 PM PDT Thu Jul 29 2021

SYNOPSIS. 29/929 AM.

A warm air mass will remain in place due to an area of high pressure aloft over the West. Some cooling is expected over the weekend as an area of low pressure brushes the area, but high pressure aloft will build back in for next week. Isolated afternoon and evening thunderstorms are possible across some mountain areas and the deserts Friday and Saturday.

SHORT TERM (TDY-SUN). 29/206 PM.

A stubborn marine inversion and moderate onshore flow is keeping some low clouds pinned to the Central Coast. There is just enough moisture to bring some build ups to the tallest peaks across northern VTA county mtns and the eastern San Gabriel's this afternoon. Cannot rule out a brief shower but most likely it will be just clouds. There will be just enough of a north push across SBA county this evening to produce advisory level gusts across the western half of the SBA south coast. The marine layer will remain under 900 ft this evening and low clouds will cover most of the coastal areas by dawn Friday. The SBA south coast will be the exception as the north push will keep the area cloud free.

Friday will be rather similar to today. Morning low clouds will slowly clear and the Central Coast beaches will remain cloudy. Max temps will be a little below normal across the coasts and a little above normal across the interior. There monsoon moisture will push just a little more to the west and there will be a slight chc of afternoon showers/TSTMs across the LA mtns, the Antelope Vly and the northern portion of the VTA mtns. The increased moisture will also bring enough mid level clouds to the area to make it a partly cloudy afternoon.

A large mass of mid level clouds (most likely debris clouds from the east) is forecast to move over the area Friday evening and into Saturday morning. So much clouds in fact that skies will be mostly cloudy. There will be some low clouds and fog along the near coasts as well.

The mid level clouds will move out by mid or late morning. This will allow another round of possible afternoon convection over the VTA mtns, the LA mtns and Antelope Vly. The clouds will make for a cooler start to the day and this will knock a degree or two of the max temps compared to Friday.

Two things change on Sunday. The first is that sfc high pressure will build into NV and will set up weak offshore flow. This will greatly limit the stratus formation and low clouds will be patchy at best south of Pt Conception. There will likely be better coverage across the Central Coast. This will also bring a few degrees of warming to the area - esp the coasts. The second change will be the switch to dry SW flow aloft as the high is pushed to the east by a long wave east pac trof. The dry flow aloft will shunt the convective threat well to the east of LA county.

LONG TERM (MON-THU). 29/219 PM.

The EC and GFS are not in the best of agreement and the various ensemble members also show quite a bit of variance. But despite the differences either solution will not result in too different of a fcst. Both mdls slide the upper high back to the west. The GFS shows much more troffing over the state than does the EC and it also places the center of the upper high to the east of the area further to the east. The GFS solution has a slightly better chc of allowing some monsoon moisture in but at this time it looks like that moisture will stay to the east of the area. The EC's hgts are a tad higher so there is a chc the fcst max temps are a little too low.

Otherwise onshore flow will slowly strengthen and the night through morning low cloud pattern will reestablish itself. The high hgts will keep the marine layer smooshed to under 1000 ft which will keep it out of most of the vlys (probably all of the vlys save for the Santa Ynez)

A little warming both days Tuesday and Wednesday (little or no change slated for Monday and Thursday) as hgts increase over the area. By Wednesday most of the interior (including the lower mtn elevations) will see triple digit heat. The vlys will have max temps in the 90s with an outside chc of some 100 degree readings in the warmest locations. These max temps, excluding the coasts, will be 3 to 6 degrees above normal.

AVIATION. 30/0019Z.

At 2208Z, the marine layer at KLAX was 800 ft deep. The top of the inversion was near 2200 ft with a temperature of 28 degrees C.

High confidence in the deserts and valley TAFs with no cigs expected. Moderate confidence in coastal TAFs from KCMA and KOXR northward due to some uncertainty in the timing of marine layer clouds. Low confidence in KSMO, KLOX, and KLGB where marine layer clouds could be delayed, and might fail to move in.

KLAX . Overall, low confidence in the 00Z TAF. There is a 20% chance that skies will remain clear tonight. No significant east wind component is expected.

KBUR . High confidence in the 00Z TAF with VFR conds thru the pd.

MARINE. 29/135 PM.

Across the outer waters, fairly high confidence that winds and seas will remain below Small Craft Advisory (SCA) levels thru Sun in the northern zone (PZZ670), then there is a 40-50% chance of SCA level winds Mon. For the southern two zones (PZZ673/676), expect SCA level winds thru late tonight. There is a 30% chance of SCA level winds Fri afternoon/evening, then a 40-50% chance of SCA level winds Sun thru Mon.

For the inner waters north of Point Sal, winds and seas are expected to remain below SCA levels thru Sun, then on Mon, there is a 30% chance of SCA level winds in the afternoon and evening.

In the Santa Barbara Channel, expect SCA level winds across western portions this afternoon through late tonight. Otherwise SCA conds are not expected through Sun. There is a 40% chance of SCA level winds Mon, mainly across western sections.

Across the southern inner waters zones, there is a 20-30% chance of SCA winds across northern and western portions of the zone, especially near Anacapa Island, this afternoon and evening, and again Mon afternoon and evening. Otherwise, SCA conds are not expected thru Mon.

LOX WATCHES/WARNINGS/ADVISORIES. CA . Wind Advisory in effect until 3 AM PDT Friday for zones 39-52. (See LAXNPWLOX). PZ . Small Craft Advisory in effect until 3 AM PDT Friday for zones 650-673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (SUN-THU).

Monsoonal thunderstorms are possible Saturday afternoon.



PUBLIC . Rorke AVIATION . Phillips/Sweet MARINE . Sweet SYNOPSIS . Jackson

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRJC1 4 mi56 min WSW 17 G 20
PFXC1 5 mi56 min SW 8.9 G 9.9 74°F
46256 5 mi48 min 62°F3 ft
PFDC1 6 mi62 min SSW 6 G 8
PSXC1 6 mi56 min W 1.9 G 5.1
AGXC1 7 mi62 min WSW 15 G 20 68°F 1008.9 hPa
BAXC1 7 mi68 min NW 6 G 8.9
OHBC1 - 9410660 - Los Angeles, CA 8 mi56 min 62°F1011.4 hPa
PXAC1 8 mi68 min NNW 7 G 11
46253 12 mi48 min 65°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 27 mi56 min WSW 12 G 13 64°F 67°F1012.1 hPa
46221 - Santa Monica Bay, CA (028) 29 mi48 min 62°F3 ft
46268 31 mi44 min 65°F 66°F3 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 49 mi34 min W 12 G 16 66°F 69°F1011.5 hPa63°F

Wind History for Los Angeles Pier J, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Los Alamitos Army Airfield, CA5 mi46 minW 510.00 miA Few Clouds86°F54°F34%1010.8 hPa
Long Beach, Long Beach Airport, CA6 mi51 minW 910.00 miFair81°F53°F38%1010.7 hPa
Fullerton, Fullerton Municipal Airport, CA12 mi51 minVar 610.00 miFair87°F54°F32%1010.2 hPa
Torrance, Zamperini Field Airport, CA12 mi57 minW 1310.00 miA Few Clouds77°F63°F61%1010.8 hPa
John Wayne-Orange County Airport, CA14 mi51 minSW 610.00 miPartly Cloudy80°F61°F52%1010.7 hPa
Hawthorne, Hawthorne Municipal Airport, CA18 mi51 minW 1210.00 miFair74°F61°F64%1011.1 hPa
Los Angeles, Los Angeles International Airport, CA20 mi51 minWSW 1410.00 miPartly Cloudy69°F62°F78%1011.1 hPa
Los Angeles / USC Campus Downtown, CA21 mi52 minW 810.00 miFair77°F59°F54%1010.7 hPa

Link to 5 minute data for KSLI

Wind History from SLI (wind in knots)
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Last 24hrW7W7W6NW5NW4W4CalmS3CalmN3CalmCalmCalmCalmCalmCalmS7S5S6S6W5W9W8W5
1 day ago--W6NW4W5NW5NW5W4--W4NW5NW3--CalmCalmCalmCalmS8S6S8S7S7SW6W6W7
2 days agoSW9SW4S6SW5SW5SW4W4NW4NW3W3NW4NW5NW4NW4NW5W4W3W3SW8SW9SW8W6W8W7

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
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Thu -- 02:08 AM PDT     3.73 feet High Tide
Thu -- 06:02 AM PDT     Sunrise
Thu -- 09:00 AM PDT     0.55 feet Low Tide
Thu -- 11:38 AM PDT     Moonset
Thu -- 03:37 PM PDT     3.81 feet High Tide
Thu -- 07:54 PM PDT     Sunset
Thu -- 09:56 PM PDT     1.35 feet Low Tide
Thu -- 11:36 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.93.53.73.63.22.61.91.20.70.50.71.322.73.43.73.83.532.41.81.51.41.5

Tide / Current Tables for Long Beach, Terminal Island, California
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Long Beach
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Thu -- 01:09 AM PDT     4.52 feet High Tide
Thu -- 06:03 AM PDT     Sunrise
Thu -- 07:49 AM PDT     0.95 feet Low Tide
Thu -- 11:39 AM PDT     Moonset
Thu -- 02:36 PM PDT     4.64 feet High Tide
Thu -- 07:55 PM PDT     Sunset
Thu -- 08:44 PM PDT     2.29 feet Low Tide
Thu -- 11:36 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.34.54.43.93.22.31.61.111.21.82.73.54.24.64.64.33.83.22.72.42.32.52.9

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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