Monday, April19, 2021
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Marine Weather and Tides
Lomita, 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 7:28PM Monday April 19, 2021 3:11 PM PDT (22:11 UTC) Moonrise 11:36AMMoonset 1:39AM Illumination 55% Phase: First Quarter Moon; Moon at 8 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- 206 Pm Pdt Mon Apr 19 2021
Tonight..W winds 15 to 20 kt, becoming sw 10 to 15 kt after midnight. Wind waves 1 to 3 ft. Mixed swell W 2 to 3 ft at 7 seconds and sw 2 ft at 21 seconds. Patchy fog after midnight.
Tue..SE winds 10 to 15 kt, becoming sw in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 8 seconds and sw 2 ft at 19 seconds. Patchy fog in the morning.
Tue night..W winds 15 to 20 kt, becoming 10 to 15 kt after midnight. Wind waves 2 to 3 ft. Mixed swell W 2 to 4 ft at 9 seconds and sw 2 ft at 19 seconds. Slight chance of showers after midnight.
Wed..Winds variable 10 kt or less, becoming sw 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft at 10 seconds and S 2 ft at 18 seconds. Slight chance of showers in the morning.
Wed night..W winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 10 seconds and S 2 ft at 18 seconds. Slight chance of showers after midnight.
Thu..W winds 5 to 10 kt, becoming 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 10 seconds and S 2 ft at 17 seconds. Slight chance of showers in the morning.
Thu night..W winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 9 seconds and S 2 ft at 18 seconds.
Fri..SW winds 10 to 15 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 3 ft.
Sat..W winds 10 to 15 kt. Wind waves 1 to 3 ft. Mixed swell W 2 to 3 ft and S 3 ft.
PZZ600 206 Pm Pdt Mon Apr 19 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 1033 mb high pressure center was located 700 nm west-northwest of point conception. A 1009 mb thermal low was located in az. Areas of dense fog will impact the northern and outer coastal waters tonight. Gales are expected across the outer coastal waters tonight through Tuesday evening.


7 Day Forecast for Marine Location Near Lomita, CA
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location: 33.77, -118.25     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 192045 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 145 PM PDT Mon Apr 19 2021

SYNOPSIS. 19/139 PM.

A cool down with a return of night through morning low clouds and fog will start tonight and continue through late in the week. Drizzle or light rain is possible Wednesday into Thursday morning, mainly for parts of Los Angeles and Ventura Counties.

SHORT TERM (TDY-THU). 19/143 PM.

An interesting day of trends today as weak onshore flow shifts to onshore. Interior areas, especially those above 2000' elevation, warmed up considerably, in some cases as much as 15 degrees from yesterday. On the other end of the spectrum, coastal areas generally cooled as much as 15 degrees as the turn to onshore ushered in that chilly air over the cold Pacific Ocean. The transition area between the coast and the foothills were very similar to yesterday.

Going forward, the rest of the week will be much cooler as a couple of low pressure systems drop out of the north and move through the state. Onshore flow will continue to increase and the marine layer will become much more widespread and include the coastal slopes by Wednesday and Thursday. Still dealing with some northerly gradients today across the western portion of the Santa Ynez Range and there could be some brief advisory level wind gusts there tonight. Will hold off issuing an advisory due to it being marginal and mostly in low impact areas but people driving through the Gaviota area will feel some decent gusts this evening. These winds will also hold off the low cloud push tonight across srn SB County and Ventura County but clouds should start to fill in early Tuesday and certainly by Tuesday evening. Likely many coastal areas will stay cloudy well into the afternoon but expect most valleys should clear out.

The first upper low Wednesday will mostly stay north and east of the area but significant cooling aloft will push the marine layer depth above 3000'. Drizzle was already in the forecast but upped the ante by adding in some 15-20 pops and light rain chances for parts of LA County in the morning. Minimal, if any, clearing for coast and coastal valleys with highs mostly in the low to mid 60s.

The second upper low Thursday is farther west and probably has the best chance of dropping measurable rain across LA County. Increased pops 5-10 percent for the morning and added some low pops in for the afternoon across the LA mountains and Antelope Valley as models show the airmass becoming slightly unstable. Once again slow if any clearing for coast and coastal valleys.

Increasing southwest winds expected in the Antelope Valley, especially the foothill areas this week, possibly reaching advisory levels at times.

LONG TERM (FRI-MON). 19/143 PM.

Strong onshore flow to continue Friday and into the weekend, though the upper lows will be replaced by a weak ridge Friday into early Saturday that will help warm temps a few degrees and reduce the marine layer depth and speed up clearing. Models continue to show a full latitude trough early next week, though differ quite a bit with rain chances. Basically all of the ECMWF ensembles show at least a little rain across most of the forecast area Sunday night into Monday while the GFS ensembles are drier. Interestingly both the GFS and EC deterministic runs were drier than earlier solutions, especially southern areas. It's likely the very early season typhoon in the western Pacific is causing some issues in the model runs that may continue for several more days so it may some time before we have more clarity in the rain situation for next week. For now, odds favor some rain in most areas by next Monday, but on the light side.

AVIATION. 19/1812Z.

At 1743Z, there was no marine layer depth at KLAX.

Moderate confidence in the current forecast. VFR conditions are occurring at all terminals. LIFR to IFR conditions will return to Central Coast terminals this evening and Los Angeles County coastal terminals after 06Z. Conditions will improve to MVFR south of Point Conception after 12z.

KLAX . VFR conditions will persist through at least 08Z, then there is a likely chance of LIFR to IFR conditions by 10Z at the latest. Any east winds should remain less than 7 knots.

KBUR . VFR conditions will persist through 13z. There is a medium (40 percent) chance of LIFR to IFR conditions after 13Z Tuesday.

MARINE. 19/143 PM.

Moderate to high confidence in the current forecast. Higher confidence in seas and timing, less confidence in wind speeds.

For the outer waters . Small Craft Advisory (SCA) level winds will very likely persist through today. Speeds will increase tonight through Tuesday evening with a GALE WARNING in place. Conditions should fall below SCA levels Thursday and Friday.

For the inner waters along the central coast . A Small Craft Advisory will be in place through Tuesday evening.

Inside the southern California bight, SCA level winds will likely linger during the afternoon and evening hours across the Santa Barbara Channel today and Tuesday. There is a moderate (30-40 percent) chance of SCA level for the waters between Pt. Mugu and San Mateo Point. Gusty winds could develop near Point Dume and through the San Pedro Channel this afternoon and evening.

LOX WATCHES/WARNINGS/ADVISORIES. CA . NONE. PZ . Small Craft Advisory in effect until 9 PM PDT Tuesday for zone 645. (See LAXMWWLOX). Small Craft Advisory in effect until 3 AM PDT Tuesday for zone 650. (See LAXMWWLOX). Small Craft Advisory in effect until 6 PM PDT this evening for zones 670-673-676. (See LAXMWWLOX). Gale Warning in effect from 6 PM this evening to 9 PM PDT Tuesday for zones 670-673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (THU-MON).

No significant hazards expected.



PUBLIC . MW AVIATION . Sweet/Hall MARINE . Sweet SYNOPSIS . MW

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BAXC1 1 mi72 min S 4.1 G 7
PXAC1 1 mi66 min ESE 1.9 G 4.1
PFDC1 2 mi66 min S 8.9 G 12
AGXC1 4 mi66 min WSW 14 G 18 63°F 1014 hPa
OHBC1 - 9410660 - Los Angeles, CA 4 mi54 min 62°F1015.5 hPa
46256 5 mi46 min 61°F3 ft
46222 - San Pedro, CA (092) 11 mi51 min 62°F4 ft
46253 14 mi46 min 62°F4 ft
ICAC1 - 9410840 - Santa Monica Pier 21 mi54 min SW 6 G 7 62°F 61°F1016.2 hPa
46221 - Santa Monica Bay, CA (028) 22 mi46 min 62°F3 ft
46268 25 mi42 min 64°F 62°F2 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 42 mi42 min NW 3.9 G 3.9 61°F 63°F1015.9 hPa56°F

Wind History for Los Angeles Berth 161,
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Torrance, Zamperini Field Airport, CA5 mi85 minWNW 1010.00 miClear73°F55°F53%1015.2 hPa
Long Beach, Long Beach Airport, CA7 mi79 minS 510.00 miFair79°F42°F27%1015 hPa
Los Alamitos Army Airfield, CA11 mi74 minSSW 1010.00 miFair77°F52°F42%1015.5 hPa
Hawthorne, Hawthorne Municipal Airport, CA12 mi79 minW 1010.00 miFair72°F52°F50%1015.5 hPa
Los Angeles, Los Angeles International Airport, CA14 mi79 minWSW 1010.00 miFair69°F54°F59%1015.7 hPa
Fullerton, Fullerton Municipal Airport, CA16 mi79 minSSW 810.00 miFair82°F50°F33%1014.6 hPa
Los Angeles / USC Campus Downtown, CA17 mi80 minN 010.00 miFair79°F47°F32%1014.7 hPa
John Wayne-Orange County Airport, CA21 mi79 minSW 910.00 miA Few Clouds77°F49°F37%1015.1 hPa
Santa Monica, Santa Monica Municipal Airport, CA21 mi81 minSW 810.00 miFair71°F54°F55%1015.5 hPa

Link to 5 minute data for KTOA

Wind History from TOA (wind in knots)
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W20--------------------W3--CalmN33W7NW7W10W17
1 day agoW15W15W11W6W4--------------------CalmCalmW6SW63E6----W13
2 days agoW12W12W12SW9SW6--------------------S4CalmCalmCalmW6W9W11W15W15

Tide / Current Tables for Long Beach, Inner Harbor, California
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Long Beach
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Mon -- 01:38 AM PDT     Moonset
Mon -- 01:42 AM PDT     4.00 feet High Tide
Mon -- 06:16 AM PDT     Sunrise
Mon -- 10:41 AM PDT     0.51 feet Low Tide
Mon -- 11:35 AM PDT     Moonrise
Mon -- 07:25 PM PDT     3.18 feet High Tide
Mon -- 07:27 PM PDT     Sunset
Mon -- 09:46 PM PDT     3.12 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.8443.93.63.12.51.91.30.80.60.50.71.11.522.52.93.13.23.23.13.13.2

Tide / Current Tables for Los Patos (highway bridge), California
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Los Patos (highway bridge)
Click for Map
Mon -- 01:37 AM PDT     Moonset
Mon -- 02:38 AM PDT     3.46 feet High Tide
Mon -- 06:16 AM PDT     Sunrise
Mon -- 11:34 AM PDT     Moonrise
Mon -- 11:48 AM PDT     0.32 feet Low Tide
Mon -- 07:26 PM PDT     Sunset
Mon -- 08:21 PM PDT     2.75 feet High Tide
Mon -- 10:53 PM PDT     1.95 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.13.33.43.53.33.12.62.11.61.10.60.40.30.50.81.21.72.12.52.72.72.62.21.9

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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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