Saturday, July11, 2020
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Marine Weather and Tides
Pasadena, 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 5:48AMSunset 8:07PM Saturday July 11, 2020 8:17 PM PDT (03:17 UTC) Moonrise 12:00AMMoonset 11:59AM Illumination 59% 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- 213 Pm Pdt Sat Jul 11 2020
Tonight..W winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 ft at 7 seconds and se 3 ft at 12 seconds. Patchy dense fog in the evening, then areas of dense fog, with vsby 1 nm or less.
Sun..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 8 seconds and se 3 ft at 11 seconds. Areas of dense fog in the morning, then patchy dense fog, with vsby 1 nm or less.
Sun night..W winds 10 to 15 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 8 seconds and se 3 ft at 10 seconds. Patchy dense fog with vsby 1 nm or less after midnight.
Mon..Winds variable 10 kt or less, becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 8 seconds and se 3 ft at 10 seconds. Patchy dense fog with vsby 1 nm or less in the morning.
Mon night..W winds 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 7 seconds and S 2 ft at 9 seconds. Patchy fog after midnight.
Tue..Winds variable 10 kt or less, becoming W 10 to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 ft at 8 seconds and S 2 ft at 9 seconds. Patchy fog.
Tue night..W winds 10 to 15 kt. Wind waves 1 to 3 ft. Mixed swell W 2 ft at 6 seconds and S 2 ft at 9 seconds. Patchy fog after midnight.
Wed through Thu..W winds 10 to 15 kt. Wind waves 2 ft or less. W swell 2 ft. Patchy fog.
PZZ600 213 Pm Pdt Sat Jul 11 2020
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 1025 mb high pressure was centered centered 600 nm west of san francisco, while a 1008 mb was centered over southern nevada and a 1008 mb thermal low was located over southern nevada. The high will strengthen some over the next few days. Dense fog with very low visibility will persist into early next week. Choppy seas will affect all waters through at least Tuesday.


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 120118 AAA AFDLOX

Area Forecast Discussion . UPDATED National Weather Service Los Angeles/Oxnard CA 618 PM PDT Sat Jul 11 2020

Updated Aviation and Fire Weather Sections

SYNOPSIS. 11/808 AM.

Afternoon temperatures will be well above normal today and Sunday and then will slowly cool through the week. Night and morning low clouds and fog will remain along the coast through the weekend and then will become more widespread, pushing into interior valleys by midweek.

SHORT TERM (TDY-TUE). 11/137 PM.

Aside from the dense coastal fog this morning, the day's primary weather impact is the heat. Unlike a wind-driven October Santa Ana heat event, this is all about the heights. Synoptically, there is a massive dome of high pressure over the southwest roughly centered over New Mexico in an area of 600 DaM 500-mb heights. Our area is on the western edges at 596DaM. Weak onshore flow is keeping the immediate coast relatively cool, but afternoon temperatures will be 6 to 12 degrees above normal everywhere else. These hot temperatures combined with the above normal overnight lows will produce a hazardous temperature environment for much of the non-coastal area. Please refer to the product LAXNPWLOX for the exact details.

Similar to last night, there will be a shallow marine layer that could produce some dense coastal fog, but it should not extend far into inland valleys. Overnight lows will be above normal again, especially around 1000-1500 foot elevations which are right in the heart of the inversion.

Sunday will be similar to today with a few more degrees of warming across the interior. The heat products will continue into early Sunday evening. Models show there could be some moisture coming in from the south at the 850-700 mb levels that could lead to afternoon cumulus clouds over the LA and Ventura County mountains. The onshore gradient has dropped by about 1 mb but should be enough for afternoon breezy conditions in the mountains and Antelope Valley. The increased onshore flow will bring a little better marine layer stratus coverage to the area Sunday night.

The upper high moves to the southeast on Monday and an upper-level trough drops down the west coast. Heights will fall to about 590 DaM and onshore flow will increase both from both the west and south. These conditions will combine to drop max temperatures 5 to 10 degrees. This will drop the valleys to only a few degrees above normal and the coasts no seasonal normals. Gusty afternoon winds will return to the mountains and Antelope Valley.

Tuesday will be similar to Monday with the weak trough extending down the coast, but the onshore gradient will weaken a bit.

LONG TERM (WED-SAT). 11/137 PM.

Models suggest that our area will remain under the influence of the broad and weak trough Wednesday through Friday with moderate to strong onshore flow through the period.

The night through morning marine layer stratus pattern will reestablish itself during this time, and conditions may not clear to the beaches with daily afternoon onshore flow. The 500-mb heights will remain sufficient to keep the marine layer shallow and probably out of the valleys. Only minor changes to sensible weather are expected under an a steady synoptic pattern.

AVIATION. 12/0106Z.

At 2339Z, the marine layer depth was 350 feet deep. The top of the inversion was near 2500 feet with a temperature around 32 Celsius.

Moderate-to-high confidence in the current forecast. Less confidence in timing for coastal terminals, higher confidence in flight categories for coastal terminals and overall forecast for valley and desert terminals. LIFR to IFR conditions are likely for coastal terminals through 18Z, otherwise VFR conditions will persist through the period.

KLAX . There is a 70 percent chance of LIFR to IFR conditions developing as soon as 04Z or as late as 09Z, and LIFR to IFR conditions will linger through at least 14Z or late as 17Z. There is a 30 percent chance of VFR conditions through the period.

KBUR . VFR conditions are expected through the period. No wind impacts are expected at this time.

MARINE. 11/1222 PM.

High confidence in Small Craft Advisory (SCA) level NW winds spreading southward from the outer waters along the Central Coast to San Nicolas Island by tonight, then persisting through at least Sunday night and likely through Monday night. Decided to cancel the SCA for the Santa Barbara Channel, as the winds look to stay west of Santa Cruz Island. On Tuesday, the chance for SCA winds shifts to south of Point Conception. With the persistent winds, choppy short period seas will impact all waters into early next week. A southeast swell from the remnants of Hurricane Cristina will minimally impact the area Sunday through Tuesday.

Dense fog will remain a concern through at least Monday morning, with visibilities under 1 mile. There is a chance that the fog hugs some coastlines even through the afternoon hours.

FIRE WEATHER. 11/617 PM.

A ridge of high pressure will continue to strengthen over the area this weekend, resulting in widespread hot and dry conditions for all areas away from the beaches through Tuesday. The hottest temperatures are forecast through Sunday with daytime highs between 95 and 105 degrees, except 105 to 108 degrees in the Antelope Valley. Widespread minimum humidities between 5 and 15 percent will common across the inland areas. Mountain and foothill areas will also continue to see very poor humidity recoveries overnight, generally remaining in the teens and 20s.

Onshore winds will be typical this evening across the interior, gusting between 20 and 35 mph then strengthening on Sunday and Monday, when gusts between 25 and 40 mph can be expected. Isolated gusts to as high as 45 mph are possible. The strongest winds each day will be focused across the Highway 14 corridor into the Antelope Valley, especially in the foothill areas. The LAX- Daggett gradient, peaking at +4 mb today will strengthen to between +6 and +7 mb by Sunday afternoon and Monday afternoon.

With fuel moisture values continuing to dry, elevated to brief critical fire weather conditions will likely continue across inland areas through Tuesday. In addition, the hot and dry conditions combined with drying fuels will bring an increased threat of deeper vertical plume development with any fires that develop across the interior for the remainder of this weekend. Mixing heights are forecast to lift to between 10000 and 16000 feet during the afternoon hours Sunday. Coastal areas will be moderated by the shallow marine layer and onshore wind influence.

LOX WATCHES/WARNINGS/ADVISORIES. CA . Heat Advisory in effect until 8 PM PDT Sunday for zones 37-38-44>46-51-53-54-88-547. (See LAXNPWLOX). Excessive Heat Warning in effect from 11 AM to 8 PM PDT Sunday for zone 59. (See LAXNPWLOX). PZ . Small Craft Advisory in effect until 3 AM PDT Monday for zones 670-673-676. (See LAXMWWLOX).

.HAZARD POTENTIAL OUTLOOK (TUE-SAT).

No significant hazards expected.



PUBLIC . jld/Rorke AVIATION . Hall MARINE . Kittell FIRE . Hall/Gomberg SYNOPSIS . jld

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 22 mi48 min SSW 2.9 G 5.1 67°F 72°F1013.5 hPa
PSXC1 27 mi48 min NNW 5.1 G 8
BAXC1 28 mi96 min N 8 G 9.9
PXAC1 28 mi96 min NNW 5.1 G 7
PFXC1 29 mi48 min SSW 6 G 6
PFDC1 30 mi114 min SSE 2.9 G 4.1
PRJC1 30 mi48 min WSW 9.9 G 11
AGXC1 31 mi96 min WSW 11 G 13
OHBC1 - 9410660 - Los Angeles, CA 31 mi48 min 64°F1013.3 hPa
46256 32 mi52 min 66°F3 ft
46221 - Santa Monica Bay, CA (028) 34 mi55 min 70°F3 ft
46222 - San Pedro, CA (092) 39 mi58 min 70°F3 ft
46253 40 mi52 min 70°F3 ft

Wind History for Santa Monica, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
El Monte, CA8 mi28 minSSW 710.00 miFair84°F46°F27%1012.9 hPa
Burbank - Bob Hope Airport, CA12 mi25 minSE 510.00 miFair87°F44°F22%1011.6 hPa
Los Angeles / USC Campus Downtown, CA12 mi26 minN 010.00 miFair75°F59°F58%1012.5 hPa
Los Angeles, Whiteman Airport, CA16 mi88 minESE 610.00 miClear91°F41°F17%1014.6 hPa
Brackett Field Airport, CA19 mi3.5 hrsW 1210.00 miFair97°F28°F9%1013.9 hPa
Hawthorne, Hawthorne Municipal Airport, CA19 mi25 minWSW 610.00 miFair72°F62°F71%1013.2 hPa
Santa Monica, Santa Monica Municipal Airport, CA19 mi27 minSSW 510.00 miFair70°F60°F71%1012.7 hPa
Van Nuys, Van Nuys Airport, CA19 mi27 minVar 410.00 miFair94°F23°F8%1011.9 hPa
Los Angeles, Los Angeles International Airport, CA21 mi25 minWSW 910.00 miPartly Cloudy69°F61°F76%1012.9 hPa
Fullerton, Fullerton Municipal Airport, CA22 mi25 minW 710.00 miA Few Clouds85°F46°F26%1012.5 hPa
Long Beach, Long Beach Airport, CA23 mi25 minNW 910.00 miFair78°F59°F52%1012.8 hPa

Link to 5 minute data for KEMT

Wind History from EMT (wind in knots)
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Last 24hr----------------------CalmCalmCalm5S565S10S10SW7--SW7SW7
1 day ago----------------------CalmCalmCalm36SW6S7SW7SW7SW7SW7SW7SW7
2 days ago----------------------CalmCalm3445SE8SW9
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Tide / Current Tables for Santa Monica, Municipal Pier, California
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Santa Monica
Click for Map
Sat -- 01:34 AM PDT     4.07 feet High Tide
Sat -- 05:51 AM PDT     Sunrise
Sat -- 08:42 AM PDT     0.93 feet Low Tide
Sat -- 12:01 PM PDT     Moonset
Sat -- 03:49 PM PDT     4.18 feet High Tide
Sat -- 08:07 PM PDT     Sunset
Sat -- 09:51 PM PDT     2.59 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.8443.83.32.621.410.91.21.72.43.13.74.14.243.73.32.92.72.62.7

Tide / Current Tables for Santa Monica, California
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Santa Monica
Click for Map
Sat -- 01:33 AM PDT     4.08 feet High Tide
Sat -- 05:51 AM PDT     Sunrise
Sat -- 08:37 AM PDT     0.94 feet Low Tide
Sat -- 12:01 PM PDT     Moonset
Sat -- 03:44 PM PDT     4.19 feet High Tide
Sat -- 08:07 PM PDT     Sunset
Sat -- 09:41 PM PDT     2.61 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.844.13.83.32.61.91.4111.21.82.53.23.84.14.243.63.22.92.72.62.8

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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Wind Forecast for Los Angeles/Oxnard, CA (23,6,7,8)
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Ground Weather Radar Station Santa Ana Mtns, CA
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Disclaimer:
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.