Monday, December16, 2019
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Marine Weather and Tides
Pasadena, CA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:50AMSunset 4:46PM Monday December 16, 2019 1:44 AM PST (09:44 UTC) Moonrise 10:38PMMoonset 11:46AM Illumination 78% Phase: Waning Gibbous; Moon at 19 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- 830 Pm Pst Sun Dec 15 2019
Tonight..N winds 15 to 20 kt, becoming ne 10 to 15 kt after midnight. Wind waves 2 to 3 ft. W swell 3 to 5 ft at 9 seconds.
Mon..From point mugu to santa Monica and S of palos verdes, ne winds 15 to 20 kt becoming 10 to 15 kt in the afternoon. Elsewhere, ne winds 5 to 10 kt becoming se in the afternoon. Wind waves 2 to 4 ft. W swell 2 to 4 ft at 13 seconds.
Mon night..NE winds 10 to 20 kt with gusts to 25 kt. Wind waves 2 to 4 ft. W swell 2 to 3 ft at 13 seconds.
Tue..NE winds 10 to 20 kt with gusts to 25 kt. Wind waves 2 to 4 ft. W swell 2 ft at 12 seconds.
Tue night..E winds 10 to 20 kt, becoming 5 to 10 kt after midnight. Wind waves 2 to 3 ft. W swell 2 ft at 15 seconds.
Wed..Winds variable 10 kt or less. Wind waves 2 ft or less. W swell 2 to 3 ft at 15 seconds. Slight chance of rain.
Wed night..NW winds 10 to 15 kt, becoming N 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 4 ft at 16 seconds.
Thu..N winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft.
Fri..NW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft.
PZZ600 830 Pm Pst Sun Dec 15 2019
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 03z or 7 pm pst, a 1003 mb low was in eastern new mexico and a 1026 mb surface high was located about 600 nm west of point conception. Strong west to northwest flow across coastal waters will continue through today.


7 Day Forecast for Marine Location Near Pasadena, CA
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location: 34.16, -118.14     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 160306 AFDLOX

Area Forecast Discussion . UPDATED National Weather Service Los Angeles/Oxnard CA 706 PM PST Sun Dec 15 2019

SYNOPSIS. 15/701 PM.

Moderate northerly winds will continue across portions of the region through tonight then strong and gusty northeast winds will develop across Los Angeles and Ventura Counties Monday and Tuesday. There is a slight chance of showers Wednesday otherwise conditions will be dry through Saturday.

SHORT TERM (SUN-WED). 15/702 PM.

***UPDATE***

A breezy and mostly cooler day today. The offshore north gradient from KBFL peaked at 5.8 mb this afternoon. Northerly wind gusts50 to 55 mph were common in the mtns today with isolated gusts 63 on the windiest exposed ridgetops. Gusts between 35 and 45 mph were common across most of the coasts and vlys of LA county and across srn SBA county as well. A good shot of cold air advection in conjunction with the strong sfc gradient was responsible for the strength and coverage of these winds. This cold air brought 2 to 4 degrees of cooling to the coasts but 5 to 10 degrees of cooling to the vlys and the interior.

The east west gradient has just flipped from onshore to offshore and will grow more more offshore overnight. This will shift the direction of the offshore winds to the NE and a classic Santa Ana will develop after midnight. The north winds will decrease to below advisory levels during this transition.

Will likely let wind advisories for the north winds expire at 9pm and then issue a new batch of advisories for Santa Ana winds starting at 1000 am Monday morning.

The latest run of the NAM still supports the idea of a low end advisory level wind event Monday followed by a moderate Santa Ana on Tuesday.

Will issues updates between 830 pm and 900 pm to expire current wind advisories and issue new ones for Monday.

***From Previous Discussion*** An upper ridge will amplify off the West Coast tonight, building heights about 5DM as it moves into the forecast area on Monday. All models show good offshore gradients with LAX-DAG on monday morning around -5 mb, and increasing during the day. Winds should peak Tuesday morning and the NAM currently has an impressive -9 mb LAX-DAG gradient. There is some upper-level support, but winds should stay in advisory-level range as opposed to a high wind warning.

Skies should be mostly clear Monday and there will be some warming with the rising heights and offshore flow.

The upper level ridge moves eastward allowing a trough to dip down beginning Tuesday afternoon. High clouds will increase, especially across northern and western sections where it will likely become rather cloudy. Not expecting a significant temperature change on Tuesday.

A negatively tilted trough will swing though the forecast area late Tuesday night and early Wednesday. A band of rain will move through SLO and SBA Counties, breaking apart as it moves south of and east of Point Conception on Wednesday. There is still a slight chance of rain in Ventura and Los Angeles Counties on Wednesday.

LONG TERM (THU-SUN). 15/203 PM.

Weak upper level ridging will move into the region on Thursday and linger into Friday, which should be the warmest day of the week in downtown LA. Dry weather is expected Thursday through Saturday, with increasing high clouds on Friday and Saturday with the approach of a large upper-level trough. The ridge will move east of the area Saturday and a large upper-level trough will approach the West Coast. Expecting light rain to start on Saturday and extended range ensembles suggest it could last through the following week and bring 2 or more inches to the area.

AVIATION. 16/0040Z.

At 2350Z at KLAX, there was no marine layer nor a sfc based inversion.

Very good confidence in CAVU conds at all sites xcp KPRB. There is a 30 percent chc that KPRB will be VFR through the period.

Only moderate confidence in wind forecasts for all sites xcp KOXR and KCMA. Timing of east wind arrival could be off by a few hours and coastal TAFs other than KOXR and KCMA may have a weak afternoon sea breeze.

Lgt LLWS and LGT ocn MDT TURBC over and around hier trrn.

KLAX . High confidence in CAVU conds. Less confidence in wind fcst. There is a 30 percent chc of a 6 kt east wind component 10Z-16Z. There is a 30 percent chc of VRB03KT winds aft 21Z.

KBUR . High confidence in CAVU conds. Overall VFR conds expected. There is a 30 percent chc that the north winds will persist to 11Z. There is a 30 percent chc of 06012KT 13Z-18Z.

MARINE. 15/136 PM.

Outer Waters . A Small Craft Advisory (SCA) continues through late tonight. On Tuesday and Tuesday night, there is a good chance of SCA level east to southeast winds across the outer waters.

Inner Waters North of Pt Sal . Good confidence with SCA conds due to winds and hazardous seas will continue through late tonight. On Tuesday and Tuesday night, There is a 30% chance for SCA level east to southeast winds.

Inner Waters south of Point Conception . Moderate to high confidence in the current forecast. A SCA for both the inner water zones PZZ650-655 continues through this evening. Then, from late Sun night through Tue, there is a 50% chance for SCA level NE winds each morning, especially across eastern sections between Ventura and Malibu to the Channel Islands as well as the San Pedro Channel to Avalon Harbor. Strongest winds are expected Tuesday morning.

A large and long period west to northwest swell will affect the coastal waters through at least late tonight, resulting in hazardous sea conditions and large breaking waves near shore, especially with a large short period wind swell on top of that.

BEACHES. 15/135 PM.

A HIGH SURF ADVISORY remains in effect for the Central Coast through Monday morning. The highest surf will occur across exposed west facing beaches. Strong rip currents and dangerous breaking waves are expected.

Another high surf event is possible beginning Wednesday.

LOX WATCHES/WARNINGS/ADVISORIES. CA . High Surf Advisory in effect until noon PST Monday for zones 34-35. (See LAXCFWLOX). Wind Advisory in effect until 9 PM PST this evening for zones 41-46-53-54-88-547. (See LAXNPWLOX). PZ . Small Craft Advisory in effect until 3 AM PST Monday for zones 645-670-673-676. (See LAXMWWLOX). Small Craft Advisory in effect until 9 PM PST this evening for zones 650-655. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (WED-SUN).

Gusty northeast winds possible across parts of LA/Ventura Counties Tuesday. Light rain is expected Tuesday evening and Wednesday, primarily in San Luis Obispo County.



PUBLIC . jld/Rorke AVIATION . Rorke MARINE . Sweet BEACHES . Sweet SYNOPSIS . Kj

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 22 mi56 min SE 2.9 G 4.1 56°F 60°F1020.6 hPa
PSXC1 27 mi56 min NNW 5.1 G 8
BAXC1 28 mi56 min N 9.9 G 11
PXAC1 28 mi62 min NW 6 G 7
PFXC1 29 mi56 min N 8 G 11
PFDC1 30 mi74 min NW 8.9 G 8.9
PRJC1 30 mi56 min N 7 G 9.9
AGXC1 31 mi56 min NNW 8.9 G 9.9
OHBC1 - 9410660 - Los Angeles, CA 31 mi56 min 62°F1020.7 hPa
46256 32 mi44 min 60°F3 ft
46221 - Santa Monica Bay, CA (028) 34 mi48 min 61°F3 ft
46222 - San Pedro, CA (092) 39 mi51 min 61°F5 ft
46253 40 mi44 min 62°F5 ft

Wind History for Santa Monica, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Burbank - Bob Hope Airport, CA12 mi51 minN 310.00 miFair45°F28°F54%1019.7 hPa
Los Angeles / USC Campus Downtown, CA12 mi52 minNNE 310.00 miFair53°F28°F40%1020.3 hPa
Brackett Field Airport, CA19 mi5 hrsN 010.00 miFair48°F35°F62%1019.3 hPa
Hawthorne, Hawthorne Municipal Airport, CA19 mi51 minN 010.00 miFair50°F30°F46%1020.6 hPa
Santa Monica, Santa Monica Municipal Airport, CA19 mi53 minN 010.00 miFair51°F25°F36%1020.3 hPa
Van Nuys, Van Nuys Airport, CA19 mi53 minVar 310.00 miFair50°F26°F39%1019.9 hPa
Los Angeles, Los Angeles International Airport, CA21 mi51 minNE 510.00 miPartly Cloudy54°F27°F35%1020.1 hPa
Fullerton, Fullerton Municipal Airport, CA22 mi51 minN 010.00 miFair45°F35°F68%1020 hPa
Long Beach, Long Beach Airport, CA23 mi51 minNW 510.00 miFair48°F32°F54%1020.4 hPa

Link to 5 minute data for KMWS

Wind History from MWS (wind in knots)
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2 days agoCalmW1
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Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Mon -- 12:56 AM PST     3.76 feet High Tide
Mon -- 05:13 AM PST     2.73 feet Low Tide
Mon -- 06:52 AM PST     Sunrise
Mon -- 10:46 AM PST     Moonset
Mon -- 11:20 AM PST     5.55 feet High Tide
Mon -- 04:46 PM PST     Sunset
Mon -- 06:52 PM PST     -0.35 feet Low Tide
Mon -- 09:39 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.63.83.63.32.92.72.83.23.84.65.25.55.44.942.81.50.5-0.2-0.3-00.61.62.5

Tide / Current Tables for Santa Monica, Municipal Pier, California
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Santa Monica
Click for Map
Mon -- 12:57 AM PST     3.72 feet High Tide
Mon -- 05:12 AM PST     2.78 feet Low Tide
Mon -- 06:52 AM PST     Sunrise
Mon -- 10:46 AM PST     Moonset
Mon -- 11:19 AM PST     5.43 feet High Tide
Mon -- 04:46 PM PST     Sunset
Mon -- 06:55 PM PST     -0.33 feet Low Tide
Mon -- 09:39 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.63.73.63.332.82.93.23.84.55.15.45.34.83.92.71.50.5-0.1-0.3-0.10.61.52.4

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 (4,6,7,8)
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Ground Weather Radar Station Santa Ana Mtns, CA
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.