Thursday, February27, 2020
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Marine Weather and Tides
Palos Verdes Estates, CA

Version 3.4
NOTICE
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 6:23AMSunset 5:49PM Thursday February 27, 2020 6:08 AM PST (14:08 UTC) Moonrise 9:46AMMoonset 10:36PM Illumination 16% Phase: Waxing Crescent; Moon at 4 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- 249 Am Pst Thu Feb 27 2020
Today..From point mugu to santa Monica and out to anacapa island, N to ne winds 10 to 20 kt becoming W 10 kt in the afternoon. Elsewhere, N to ne winds 5 to 10 kt, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 13 seconds and S 2 ft at 16 seconds.
Tonight..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft at 14 seconds and S 2 ft at 16 seconds.
Fri..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 14 seconds and S 2 ft at 16 seconds.
Fri night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 ft at 14 seconds and S 2 ft at 16 seconds. Patchy fog after midnight.
Sat..Winds variable 10 kt or less, becoming W 10 to 15 kt with local gusts to 20 kt in the afternoon. Wind waves 1 to 3 ft. Mixed swell W 2 to 3 ft at 14 seconds and S 2 ft at 16 seconds. Patchy fog in the morning.
Sat night..W winds 10 to 15 kt with local gusts to 20 kt, becoming 5 to 10 kt late. Wind waves 1 to 3 ft. W swell 2 to 3 ft at 14 seconds.
Sun..W to nw winds 10 to 15 kt early, becoming 15 to 25 kt. Combined seas 3 to 5 ft. Chance of showers.
Mon..W to nw winds 10 to 20 kt. Wind waves 2 to 3 ft. W swell 4 to 6 ft.
PZZ600 249 Am Pst Thu Feb 27 2020
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 10z, or 2 am pst, a 1036 mb surface high was located 600 nm nw of san francisco. A weak thermal trough was located across the southern inner coastal waters.


7 Day Forecast for Marine Location Near Palos Verdes Estates, CA
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location: 33.81, -118.41     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 271129 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 329 AM PST Thu Feb 27 2020

SYNOPSIS. 27/328 AM.

High pressure and offshore flow will bring dry weather with well above normal temperatures to southwestern California through Friday. It will be much cooler Saturday as onshore flow returns. There will be further cooling with a chance of showers Sunday into Monday as low pressure moves into the area. Dry and slightly warmer weather is expected through at least mid week.

SHORT TERM (TDY-SAT). 27/328 AM.

Latest GOES-W fog product indicated no stratus as weak offshore flow will continue to keep all low clouds well off the coast. Plenty of high clouds were moving west to east across the area this morning. Offshore winds are much weaker this morning, with the strongest gusts around 40 mph in the L.A. County Mountains and much less across the usual wind prone valley passes and canyons across L.A./Ventura Counties. the LAX-DAG surface gradient was around -4 mb this morning, similar to yesterday at this time, however, cool air advection was lacking this morning, so winds are not expected to strengthen too much this morning. Wind advisories will not be necessary for the usual wind prone Santa Ana locations this morning. The combination of weak offshore flow and a strong ridge remaining overhead will bring the warmest temperatures of the week today. In fact, many coastal and coastal valley areas are expected to climb well into the 80s today, and can't rule out an isolated 90 degree reading. As a result, there will be the potential for a few record highs today.

Synoptically, an elongated upper ridge over California will persist through today with a relatively weak upper low to the west. As the Ridge breaks down tonight into Friday, the upper low will fill in and weaken further but continue to bring plenty of high clouds across the area. Will go with mostly cloudy tonight into Friday. There is a slight chance that some patchy dense fog could develop late tonight into Friday mornng along come coastal areas but not expecting it.

the LAX- DAG surface gradient was around -4 mb this morning, similar to yesterday at this time, however, cool air advection was lacking this morning, so winds are not expected to strengthen too much this morning. Wind advisories will not be necessary for the usual wind prone Santa Ana locations this morning. The combination of weak offshore flow and a strong ridge remaining overhead will bring the warmest temperatures of the week today. In fact, many coastal and coastal valley areas are expected to climb well into the 80s today, and can't rule out an isolated 90 degree reading. As a result, there will be the potential for a few record highs today.

For Friday, warmer than normal high temps will continue across the valleys, but weak offshore winds will shift to onshore allowing coastal areas to see high temps lower 3-8 degrees with best cooling across the Central Coast. There will be a modest cool down across inland valley locations. Expect a return of low clouds and fog friday night into Saturday morning across most coastal areas with continued high clouds across the region. For Saturday, an upper level disturbance within a broad west coast trough will push into Oregon and squeeze a 150 kt w to e jet aloft over southern California. This will strengthen onshore surface pressure gradients and bring more clouds (both high and low) to the area. All of this adds up to a lot of cooling (on the order of 10 to 15 degrees from Friday) and gusty onshore flow focused over the interior. Highs will be in the mid 60s to mid 70s across much of the forecast area with cooler temps across the higher terrain.

LONG TERM (SUN-WED). 27/325 AM.

Both the GFS and ECMWF continue to be in good agreement through the extended period. For Sunday, a positive tilted trough over Norcal and extending SW over the Eastern PAC will continue to dive south while a closed 539 DM low develops at the base of the trough over Southern Cal late Sunday afternoon/evening. The track of this system continues to hug the coast as it tracks over Southern California making it tough to tap into moisture. If the track of this system does move slightly west over the water, it could bring slightly more rainfall to areas S of Point Conception. 90 percent of the 50+ ensemble projections available continue to suggest the very light or no rain scenario (0.00-0.20 inches). With significant H5 height falls, its hard to think there will be be no rain with this system. The other 10 percent of the ensembles were a bit more bullish indicating more widespread 0.25-0.50 inch scenario with the low pulling off the coast, which again is unlikely but still possible. This system will be a cold in nature due to its Alaskan origins, which means that snow levels should translate down to the pass levels (including the I-5 Tejon Pass) and possible thunderstorms are in the cards due to the instability with the 500 mb temps -23 to -30 degrees C. Later shifts will have to look closely to see if slight chance for thunderstorms will need to be added over portions of the forecast area Sunday afternoon and early evening. Gusty west to northwest winds are expected either with the system on Sunday, or immediately after it through Monday. A few Wind Advisories will probably be needed.

As far as temperatures go, there will be a significant cool down Sunday as temperatures on Sunday are expected to be around 60 over most of the coastal and valley areas, which is a 20 degree drop from Friday's expected highs. There will continue to be some breezy northerly winds on Monday , with more mild and uneventful conditions Tuesday and Wednesday, with normal temperatures and mainly clear skies.

AVIATION. 27/1100Z.

At 11Z AT KLAX, there was no marine inversion.

VFR conds are expected across the region through the period. There will be varying amounts of high clouds through the period. There will be some gusty NE winds across the mtns and valleys of L.A. and VTU counties through early this afternoon, with some local llws and moderate uddfs.

KLAX . High confidence in the 12Z TAF with VFR conds thru the pd. Good confidence that east wind component will be less than 8 kt.

KBUR . High confidence in the 12Z TAF with VFR conds thru the pd.

MARINE. 27/257 AM.

For the Outer Waters, moderate to high confidence in the current forecast. Conditions are expected to remain below Small Craft Advisory (SCA) thresholds through Sat morning. SCA level NW winds will become likely Sat afternoon or evening, then SCA level conditions are expected Saturday night through Monday.

For the inner waters north of Pt. Sal, conditions are expected to remain below SCA levels through Sat morning. There is a 40% chance of SCA level NW winds Sat afternoon and evening. SCA conds are expected Sunday. There is a 30% chance of SCA level winds Mon.

For the inner waters south of Pt. Conception, there is a 30% chance of SCA level NE winds this morning from Ventura to Santa Monica out to Anacapa Island. Otherwise, winds and seas are expected to remain below SCA levels thru early Sun, except for a 40% chance of SCA level W-NW winds across western portions of the SBA Channel Sat afternoon/evening. SCA level W-NW winds are expected across the SBA Channel and southern inner waters Sun afternoon/Sun night. There is a 30-40% chance of SCA conds Mon.

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

.HAZARD POTENTIAL OUTLOOK (SAT-WED).

Light showers could form on Sunday bringing possible light snow to mountain roads. Moderate to strong northwest winds may affect the Sunday and Monday.



PUBLIC . Kaplan AVIATION . DB MARINE . DB SYNOPSIS . DB

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PXAC1 8 mi56 min NW 8 G 8.9
OHBC1 - 9410660 - Los Angeles, CA 10 mi56 min 62°F1021.2 hPa
BAXC1 10 mi50 min N 8 G 8
PFDC1 10 mi56 min WNW 8 G 8.9
PSXC1 10 mi50 min NW 4.1 G 6
AGXC1 11 mi50 min NW 5.1 G 5.1
PFXC1 11 mi50 min NNW 7 G 7
46221 - Santa Monica Bay, CA (028) 12 mi42 min 61°F3 ft
46256 13 mi38 min 60°F2 ft
PRJC1 13 mi50 min NNW 7 G 8
46222 - San Pedro, CA (092) 14 mi45 min 60°F2 ft
ICAC1 - 9410840 - Santa Monica Pier 14 mi50 min NE 7 G 8.9 65°F 61°F1021.2 hPa
46253 20 mi38 min 60°F2 ft
46025 - Santa Monica Basin - 33NM West Southwest of Santa Monica, CA 34 mi38 min E 5.8 G 7.8 62°F 60°F1020.7 hPa57°F

Wind History for Los Angeles Berth 161,
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Hawthorne, Hawthorne Municipal Airport, CA9 mi15 minN 010.00 miFair59°F26°F28%1021.1 hPa
Los Angeles, Los Angeles International Airport, CA9 mi15 minN 610.00 miPartly Cloudy64°F23°F21%1020.8 hPa
Long Beach, Long Beach Airport, CA14 mi15 minWNW 510.00 miFair56°F25°F30%1020.8 hPa
Santa Monica, Santa Monica Municipal Airport, CA15 mi17 minN 310.00 miFair58°F19°F23%1021.1 hPa
Los Angeles / USC Campus Downtown, CA16 mi16 minN 010.00 miFair59°F28°F31%1020.9 hPa
Los Alamitos Army Airfield, CA19 mi70 minN 010.00 miFair49°F28°F44%1020.6 hPa
Fullerton, Fullerton Municipal Airport, CA23 mi15 minENE 910.00 miFair67°F19°F16%1020 hPa

Link to 5 minute data for KTOA

Wind History from TOA (wind in knots)
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Last 24hr--------------------S3CalmCalmN35CalmSW3W8W12W12W12W11W7Calm
1 day ago--------------------CalmCalmCalmCalmW3S3W8W11W11W13W12W6CalmSW4
2 days ago--------------------CalmCalmCalmCalmSW7W10W14W14W15W10W10W8W6W3

Tide / Current Tables for King Harbor, Santa Monica Bay, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for El Segundo, Santa Monica Bay, California
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El Segundo
Click for Map
Thu -- 05:14 AM PST     1.30 feet Low Tide
Thu -- 06:25 AM PST     Sunrise
Thu -- 08:45 AM PST     Moonrise
Thu -- 11:08 AM PST     4.04 feet High Tide
Thu -- 05:22 PM PST     0.90 feet Low Tide
Thu -- 05:48 PM PST     Sunset
Thu -- 09:36 PM PST     Moonset
Thu -- 11:45 PM PST     4.18 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.13.62.92.21.61.31.41.92.53.23.843.93.42.71.91.30.911.42.12.93.64.1

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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Los Angeles/Oxnard, CA (9,2,3,4)
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Ground Weather Radar Station Santa Ana Mtns, CA
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