Monday, January20, 2020
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Marine Weather and Tides
La Crescenta-Montrose, 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 6:55AMSunset 5:12PM Monday January 20, 2020 9:00 AM PST (17:00 UTC) Moonrise 4:12AMMoonset 2:42PM Illumination 21% Phase: Waning Crescent; Moon at 25 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- 853 Am Pst Mon Jan 20 2020
Today..Winds W 10 kt or less. Wind waves 2 ft or less. W swell 2 to 4 ft at 14 seconds. Slight chance of showers in the afternoon.
Tonight..Winds variable 10 kt or less, becoming sw 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 2 to 3 ft at 13 seconds. Slight chance of showers.
Tue..W winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 3 ft at 17 seconds.
Tue night..W winds 5 to 10 kt, becoming nw 10 to 15 kt after midnight. Wind waves 2 ft or less. W swell 2 to 4 ft at 16 seconds. S swell 2 ft.
Wed..N winds 10 to 15 kt, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 4 ft at 15 seconds.
Wed night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. W swell 2 to 3 ft at 13 seconds. S swell 2 ft.
Thu..N winds 5 to 10 kt. Wind waves 2 ft or less. W swell 3 to 5 ft.
Fri..NW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 2 to 4 ft.
PZZ600 853 Am Pst Mon Jan 20 2020
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 16z or 8 am pst, a 981 mb low was over the gulf of alaska and a 1020 mb high was 250 nm S of los angeles. Generally light winds can be expected over the coastal waters through Tuesday.


7 Day Forecast for Marine Location Near La Crescenta-Montrose, CA
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location: 34.26, -118.28     debug


Area Discussion for - Los Angeles/Oxnard, CA
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FXUS66 KLOX 201607 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 807 AM PST Mon Jan 20 2020

SYNOPSIS. 20/654 AM.

Conditions will be much cooler with a slight chance of light showers across the region through Tuesday. Dry and warmer weather will return on Wednesday for the remainder of the week then there is another slight chance of rain on Sunday.

SHORT TERM (TDY-WED). 20/807 AM.

***UPDATE***

Overall, a rather gloomy morning across the forecast district. Latest satellite and surface observations indicate broad swaths of clouds moving overhead. Cloudy conditions will continue for all areas through the day. Given the moist flow, there is the possibility of some sprinkles or even light rain from Santa Barbara county southward. Based on 12Z QPF forecasts, do not anticipate much, if any, measurable rainfall. So, current slight chance POPs cover the situation very well. With the cloud cover and significant onshore gradients trends, today will be noticeably cooler.

Current forecast looks to have a very good handle on the immediate short term forecast. So, no updates are planned at this time.

***From Previous Discussion***

SW barely cyclonic flow is overhead. There is plenty of mid level moisture embedded in the flow and it will be another cloudy day. The clouds will thicken and lower through the day. A weak trof will move through the flow in the afternoon and it will likely produce some sprinkles. Since the clouds will be so high above the ground the mtns will have a better chc of rain. Unless a hundredth of an inch of rain falls it is not officially rain and there is only about a 30 percent chc that that will happen. Gradients are still offshore but are much weaker than they were 24 hours ago and will flip to onshore later this afternoon. This flip, the clouds and slightly lower hgts will all contribute to a big cool down of 4 to 8 degrees xcp for the LA county coast and vlys which will see 8 to 12 degrees of cooling. The chance of light rain will persist into the the evening and then end.

There will be a few more peaks of sun on Tuesday as the mid and high levels dry out. The very tail end of a front will pass over MRY county and will bring a slight chc of a shower to the SLO county coast from Cambria northward. Max temps will move up a degree maybe 2.

A warm up will kick off on Wednesday as ridge builds into the state. Skies will continue to clear and will likely be partly cloudy. Max temps will begin to inch up but will likely end up a couple degrees blo normal.

LONG TERM (THU-SUN). 20/304 AM.

The ridge will persist over the state on Thu and Fri. A Great Basin high will bring weak offshore flow to the area. This will eliminate any chc of stratus formation. Skies will be mostly clear. Max temps will be the big story. Look for 3 to 6 degrees of warming on Thursday. Most of the csts/vlys south of Pt Conception will see highs in the lower to mid 70s while the Central Coast will see max temps in the mid and upper 60s. There will not be much change in temps on Friday.

Not much change Saturday the ridge is a little stronger but the offshore flow is a little weaker. Both of these will counteract each other and max temps will not change much. There may be an increase in clouds in the afternoon as the high slides to the east and broad westerly flow sets up over the area.

A weak trof will bring clouds and a chc of rain to the state on Sunday. The main energy of the system will be quite a ways to the north so rain is not a slam dunk. Best chance of rain will be across the Central Coast. Right now even in the wettest scenario this storm would only bring a half inch of rain to the area.

AVIATION. 20/1148Z.

At 1130Z at KLAX, there was no marine layer.

Hi confidence in VFR cigs at all airfields thru this evening then moderate confidence at best in the formation of low clouds and MVFR cigs late this evening thru late tonight for many of the airfields. There is only a 40%-50% chance of these forming, and any low clouds that do develop may be intermittent.

LAX . Hi confidence in VFR cigs thru about 09Z, then there is a 50% chance at best for MVFR cigs to develop aft 09Z late tonight thru 18Z Tue. Good confidence that any east wind component early this morning will be 6 kt or less.

KBUR . Hi confidence in VFR cigs thru about 09Z, then there is a 50% chance at best for MVFR cigs to develop 09Z-12Z late tonight.

MARINE. 20/805 AM.

Generally hi confidence winds and seas will remain below Small Craft Advisory levels across all the coastal waters through Tuesday.

There is a 50%-60% chance of SCA level wind gusts for the southern two outer waters zones (PZZ673 and PZZ676) Wednesday afternoon and Wednesday night, and a 40% chance of these winds for parts of the outer waters on Friday. Otherwise, winds are expected to remain below SCA levels thru Friday for the coastal waters.

There is high confidence that seas will reach or exceed 10 ft tonight through Wednesday night across the outer waters north and west of the Channel Islands as a large, long period west to northwest swell overspreads the waters. The swell should peak around 6 feet across the SBA Channel Wednesday and Wednesday night.

BEACHES. 20/142 AM.

A large long-period mostly northwest swell is expected to move mainly into the coastal waters N of Point Conception tonight through Wednesday night. This swell will produce surf of about 9 to 12 feet on west and northwest facing beaches of the Central Coast during that period. The peak of the surf is expected Tuesday evening when max sets to 13 feet will be possible. A High Surf Advisory has been posted for the Central Coast beaches from this evening through 6 PM Wednesday.

Some of the swell energy will likely refract around Point Conception and move through the Santa Barbara Channel Tuesday through Wednesday, with elevated surf of up to 6 feet possible at times on well-exposed west-facing beaches of Ventura County.

With the high surf, there is an increased risk for ocean drowning. Rip currents can pull swimmers and surfers out to sea. Large breaking waves can cause injury, wash people off beaches and rocks, and capsize small boats near shore.

LOX WATCHES/WARNINGS/ADVISORIES. CA . High Surf Advisory in effect from 6 PM this evening to 6 PM PST Wednesday for zones 34-35. (See LAXCFWLOX). PZ . NONE.

.HAZARD POTENTIAL OUTLOOK (WED-SUN).

No significant hazards expected.



PUBLIC . Rorke/Thompson AVIATION . Sirard MARINE . Sweet/Sirard BEACHES . Sirard 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 21 mi49 min E 1.9 G 2.9 58°F 59°F1019.5 hPa
46221 - Santa Monica Bay, CA (028) 34 mi35 min 60°F3 ft
BAXC1 34 mi43 min ENE 2.9 G 5.1
PSXC1 34 mi43 min ENE 4.1 G 5.1
PXAC1 34 mi49 min ESE 1 G 1.9
PFDC1 36 mi43 min N 1.9 G 1.9
PFXC1 36 mi43 min NE 1.9 G 2.9
OHBC1 - 9410660 - Los Angeles, CA 37 mi49 min 60°F1019.8 hPa
PRJC1 37 mi43 min N 5.1 G 6
AGXC1 38 mi43 min W 2.9 G 4.1
46256 39 mi31 min 59°F2 ft
46222 - San Pedro, CA (092) 44 mi38 min 61°F3 ft
46253 48 mi31 min 61°F3 ft

Wind History for Santa Monica, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Burbank - Bob Hope Airport, CA6 mi68 minE 310.00 miFair52°F37°F59%1019 hPa
Los Angeles, Whiteman Airport, CA7 mi73 minVar 410.00 miOvercast54°F35°F51%1020.7 hPa
Van Nuys, Van Nuys Airport, CA12 mi70 minN 010.00 miFair51°F39°F64%1019.1 hPa
Los Angeles / USC Campus Downtown, CA17 mi69 minN 09.00 miFair57°F48°F72%1019.4 hPa
Santa Monica, Santa Monica Municipal Airport, CA18 mi70 minN 010.00 miFair56°F50°F81%1019.5 hPa
Hawthorne, Hawthorne Municipal Airport, CA23 mi68 minN 07.00 miFair58°F52°F81%1019.6 hPa
Los Angeles, Los Angeles International Airport, CA23 mi68 minW 310.00 miMostly Cloudy59°F54°F83%1019.3 hPa

Link to 5 minute data for KBUR

Wind History from BUR (wind in knots)
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Last 24hrSW3CalmCalmSW4NW8NW5NW4N4W5SW3CalmN4W4SW3CalmCalmCalmCalmNW3CalmCalmNE4E3NW4
1 day agoCalmCalmW8SW9W6SW6--SE3CalmCalmN3NW73N3NE3CalmCalmCalmN3CalmW3CalmCalmCalm
2 days agoS3SE4SE3CalmSE7S7SE4S4SW4CalmW4N53CalmCalmNE3NE3SW3CalmCalmN4N4W3Calm

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Mon -- 03:13 AM PST     Moonrise
Mon -- 05:40 AM PST     5.81 feet High Tide
Mon -- 06:57 AM PST     Sunrise
Mon -- 01:03 PM PST     -0.46 feet Low Tide
Mon -- 01:44 PM PST     Moonset
Mon -- 05:12 PM PST     Sunset
Mon -- 07:32 PM PST     3.46 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.12.63.44.35.25.75.85.34.43.21.80.6-0.2-0.5-0.20.41.32.333.43.43.12.72.3

Tide / Current Tables for Santa Monica, Municipal Pier, California
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Santa Monica
Click for Map
Mon -- 03:13 AM PST     Moonrise
Mon -- 05:42 AM PST     5.80 feet High Tide
Mon -- 06:57 AM PST     Sunrise
Mon -- 01:07 PM PST     -0.43 feet Low Tide
Mon -- 01:44 PM PST     Moonset
Mon -- 05:12 PM PST     Sunset
Mon -- 07:38 PM PST     3.47 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.12.63.44.35.15.75.85.44.53.320.8-0.1-0.4-0.20.41.32.233.43.53.22.82.3

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Los Angeles/Oxnard, CA (12,3,4,5)
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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 numerous 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.