Thursday, March4, 2021
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Marine Weather and Tides
Sunset Beach, CA

Version 3.4
NOTICE
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 6:15AMSunset 5:52PM Thursday March 4, 2021 4:37 PM PST (00:37 UTC) Moonrise 12:03AMMoonset 10:51AM Illumination 62% Phase: Waning Gibbous; Moon at 21 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- 301 Pm Pst Thu Mar 4 2021
Tonight..NW winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 13 seconds and S 2 ft at 16 seconds.
Fri..Winds variable 10 kt or less, becoming nw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. W swell 3 to 4 ft at 16 seconds.
Fri night..NW winds 10 to 20 kt. Wind waves 2 to 3 ft. W swell 3 to 4 ft at 15 seconds. Patchy fog after midnight.
Sat..NW winds 10 to 15 kt, becoming W 10 to 20 kt in the afternoon. Wind waves 1 to 3 ft. W swell 4 to 5 ft at 15 seconds. Patchy fog in the morning.
Sat night..Western portion, W winds 15 to 20 kt becoming N 5 to 10 kt after midnight. Elsewhere, W winds 5 to 10 kt becoming ne after midnight. Wind waves 2 to 3 ft. W swell 4 to 6 ft at 14 seconds.
Sun..W winds 10 to 15 kt. Wind waves 1 to 3 ft. W swell 4 to 6 ft.
Mon..W winds 10 to 20 kt with local gusts to 25 kt. Wind waves 2 to 4 ft. W swell 4 to 6 ft. Slight chance of rain.
PZZ600 301 Pm Pst Thu Mar 4 2021
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 22z, or 2 pm pst, there was a 1025 mb high 350 nm sw of los angeles and a 1018 mb low over ut.


7 Day Forecast for Marine Location Near Sunset Beach, CA
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location: 33.71, -118.06     debug


Area Discussion for - San Diego, CA
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FXUS66 KSGX 042100 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 100 PM PST Thu Mar 4 2021

SYNOPSIS. High pressure will bring warming and drying through Friday. A low pressure system moving inland through California on Saturday will strengthen onshore flow with cooling and gusty southwest to west winds in the mountains and deserts. Slight warming on Sunday. For Monday through Thursday, a low pressure system over the eastern Pacific will move slowly toward the West Coast. This will bring chances for precipitation as early as Monday night and continuing through Thursday. Stronger onshore flow will also bring periods of stronger and gusty southwest to west winds in the mountains and deserts.

DISCUSSION. FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE . SAN DIEGO . WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES .

Scattered shallow cumulus have developed along and ahead of the sea breeze front this afternoon, otherwise skies are nice and clear. Temperatures are running a solid 10 to 20 degrees higher than this time yesterday. Expect fair weather prevailing through the afternoon and any cumulus clouds to dissipate shortly after sunset. Patchy stratus may redevelop near the coast overnight, otherwise it will be clear and cool.

Warmer and drier weather will take hold on Friday as the upper level low that brought the wind and precipitation yesterday continues to move off to the east and a weak upper level ridge moves overhead. High temperatures will be 5-10 degrees above seasonal averages tomorrow, warmest in the inland valleys and low deserts. Weak offshore flow will develop in the mountains and foothills Friday morning, but will remain well below advisory strength with isolated gusts around 30-35 mph on the western slopes of the Cuyamaca Mountains and below the San Gorgonio Pass.

An upper level trough moves across central and northern CA on Saturday. While we won't see any precipitation from this system, it will bring a return of some marine layer low clouds, cooling, and gusty southwest to west winds in the mountains and deserts.

A low develops over the Gulf of Alaska and slowly drops south off the BC coast on Sunday. We will be sandwiched between the trough off the coat and a weak upper level ridge over interior So Cal and AZ on Sunday, which will maintain slightly below normal temperatures, especially west of the mountains, weak onshore flow, and a deeper marine layer.

The upper level low drops ever so slowly southward without much eastward progression early in the week. The marine layer could deepen enough for some drizzle or light rain as early as Monday, with a better chance on Tuesday morning as a weak short wave moves through the mean flow and into So Cal. Beyond about Tuesday morning, ensemble spread increases drastically with regards to the evolution of the upper low and timing of individual short wave passages. While it is too early to nail down specific details, the main point is that this large trough will very slowly progress east, meaning a multiple-day precipitation event is likely Tuesday through at least Thursday, with a good possibility of lasting into Friday. Right now ensemble consensus points to the heaviest precipitation sometime late Tuesday into Wednesday, followed by lighter showers on Thursday. There is some potential for rain continuing into Friday, but the 12Z suite of guidance has trended towards a faster eastern progression of the trough late in the week followed by another wave digging through the Great Basin Fri/Sat, leaving us dry.

This system will also be quite cold, with 700 mb temps ranging from -8 to -12C, coldest Wednesday and again on Friday. If this holds, we could see snow down to the 3000 ft level, possibly down to 2500 ft or lower during the mornings and in heavier showers. There is a good potential for accumulating snow on the I-15 through the Cajon Pass and upper portions of the Mojave Desert near the San Bernardino Foothills and I-8 through the San Diego Mountains.

AVIATION. 042030Z . VFR conditions will be predominant through the period. Scattered low clouds around 1500 ft MSL will impact the immediate coast at times 02-15Z Friday but only a small chance of BKN ceilings occurring at KSAN/KCRQ/KSNA. Confidence too low to place in TAFs. Elsewhere, expect mostly clear skies/light winds.

MARINE. Northwest winds could occasionally gust above 20 knots in the outer waters during afternoons beginning Friday night and lasting through mid next week, with a lull on Sunday. Otherwise, no hazardous marine conditions are expected.

SKYWARN. Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions.

SGX WATCHES/WARNINGS/ADVISORIES. CA . NONE. PZ . NONE.

PUBLIC . SS AVIATION/MARINE . Moreland


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRJC1 7 mi50 min WSW 11 G 12
46256 8 mi42 min 59°F3 ft
PFXC1 9 mi50 min SW 11 G 12 62°F
AGXC1 10 mi68 min WSW 11 G 12 59°F 1021.6 hPa
BAXC1 10 mi62 min WNW 6 G 9.9
PFDC1 10 mi56 min S 7 G 9.9
PSXC1 10 mi50 min WNW 5.1 G 6
46253 11 mi42 min 60°F3 ft
OHBC1 - 9410660 - Los Angeles, CA 11 mi50 min 60°F1024.3 hPa
PXAC1 11 mi56 min NNW 6 G 9.9
46222 - San Pedro, CA (092) 15 mi47 min 60°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 31 mi50 min W 8.9 G 9.9 57°F 59°F1024.6 hPa
46221 - Santa Monica Bay, CA (028) 32 mi42 min 59°F4 ft
46268 35 mi68 min 58°F 58°F3 ft
46224 - Oceanside Offshore, CA (045) 48 mi42 min 59°F4 ft

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, CA6 mi40 minSW 810.00 miA Few Clouds63°F47°F56%1023.7 hPa
Long Beach, Long Beach Airport, CA10 mi45 minVar 610.00 miFair64°F43°F46%1023.2 hPa
John Wayne-Orange County Airport, CA10 mi45 minWSW 710.00 miA Few Clouds65°F44°F47%1023.3 hPa
Fullerton, Fullerton Municipal Airport, CA12 mi45 minSSW 710.00 miFair66°F45°F47%1022.9 hPa
Torrance, Zamperini Field Airport, CA16 mi43 minW 1110.00 miClear61°F45°F55%1023.7 hPa
Hawthorne, Hawthorne Municipal Airport, CA21 mi45 minW 810.00 miFair62°F43°F50%1023.7 hPa
Los Angeles / USC Campus Downtown, CA24 mi46 minW 710.00 miFair64°F42°F45%1023.3 hPa
Los Angeles, Los Angeles International Airport, CA24 mi45 minW 1010.00 miA Few Clouds60°F45°F58%1024 hPa

Link to 5 minute data for KSLI

Wind History from SLI (wind in knots)
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Last 24hrNE6E7NE4CalmCalmNE4CalmCalmCalmCalmCalmCalmCalmNE7CalmN3E7NE3CalmSW9S9SW4SW9SW8
1 day agoS8S4S4SE3SE3CalmCalmCalmCalmCalmE5E4E4E4CalmE3SE5E7SE5NE11NE7NE10NE9NE10
2 days agoS4SE3CalmCalmCalm--NE3CalmCalmCalmSW4CalmCalmCalmCalmCalmCalmCalmCalmS8S7S7S9S9

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
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Thu -- 01:23 AM PST     4.29 feet High Tide
Thu -- 06:16 AM PST     Sunrise
Thu -- 08:40 AM PST     0.35 feet Low Tide
Thu -- 09:51 AM PST     Moonset
Thu -- 02:39 PM PST     2.60 feet High Tide
Thu -- 05:51 PM PST     Sunset
Thu -- 07:44 PM PST     1.13 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.94.34.23.83.12.31.50.80.40.40.61.21.72.22.52.62.421.51.21.11.41.92.6

Tide / Current Tables for Santa Ana River entrance (inside), California
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Santa Ana River entrance (inside)
Click for Map
Thu -- 12:46 AM PST     2.79 feet High Tide
Thu -- 06:16 AM PST     Sunrise
Thu -- 09:15 AM PST     0.12 feet Low Tide
Thu -- 09:51 AM PST     Moonset
Thu -- 02:02 PM PST     1.69 feet High Tide
Thu -- 05:51 PM PST     Sunset
Thu -- 08:19 PM PST     0.38 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.62.82.72.31.91.40.90.50.20.10.20.61.11.51.71.61.41.10.80.50.40.50.81.5

Weather Map
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GEOS Local Image of Southwest    EDIT
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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