Saturday, September25, 2021
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Marine Weather and Tides
La Crescenta-Montrose, CA

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
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 6:42AMSunset 6:46PM Saturday September 25, 2021 5:08 AM PDT (12:08 UTC) Moonrise 9:34PMMoonset 11:06AM Illumination 83% 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- 314 Am Pdt Sat Sep 25 2021
Today..Winds variable 10 kt or less, becoming W 10 kt in the afternoon. Wind waves 2 ft or less. W swell 2 to 5 ft at 12 seconds. Patchy dense fog with vsby 1 nm or less in the morning.
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 3 ft at 11 and S 2 ft at 16 seconds. Patchy fog.
Sun..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 12 seconds and S 2 ft at 16 seconds. Patchy fog in the morning.
Sun night..W winds 10 kt in the evening, becoming variable 10 kt or less. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 14 seconds and S 3 ft at 17 seconds. Patchy fog.
Mon..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 to 3 ft at 13 seconds and S 3 ft at 17 seconds. Patchy fog.
Mon night..W winds 10 to 15 kt in the evening, becoming 5 to 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft at 13 seconds and S 2 ft at 17 seconds. Patchy fog.
Tue..W winds 5 to 10 kt early, becoming 15 to 25 kt. Combined seas 4 to 6 ft.
Wed..W winds 10 to 20 kt. Wind waves 2 to 3 ft. W swell 3 to 5 ft.
PZZ600 314 Am Pdt Sat Sep 25 2021
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 09z, or 2 am pdt, a 1022 mb high was located about 700 nm W of san francisco. A 1011 mb thermal low was centered in western arizona. Little change in this pattern is expected through Sun.


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 251050 AFDLOX

Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 350 AM PDT Sat Sep 25 2021

SYNOPSIS. 25/213 AM.

A cooler weather pattern will continue through the weekend as an area of low pressure off the Baja California coast will wobble around before moving east Sunday. Instability moving around the low pressure system will clip the area to bring the possibility of isolated showers and thunderstorms eastern Los Angeles County. A cooler than normal air mass is likely to remain in place through Wednesday, then a warm up is forecast for late next week.

SHORT TERM (TDY-MON). 25/340 AM.

An upper-level trough of low pressure continues to settle in off the Baja California coast early this morning. This inside-slider type trough is pulling in subtropical moisture as it moves to the west. The latest radar mosaic shows shower activity to the east of the area over Riverside and San Bernardino Counties. Showers are advancing west toward the eastern end of Los Angeles County and should arrive laster this morning. PoPs were nudged higher for these areas this morning. The air mass should turn more convective as the day progresses with the best instability over eastern Los Angeles County. An isolated shower or thunderstorm cannot be ruled over the higher elevations of the Ventura County mountains this afternoon and evening, but the bulk of the convective activity will likely be from eastern Los Angeles County into the areas east and south of the area. Moisture parameters are a little better compared to yesterday. NCEP HIRES FV3 and ARW model solutions suggest 850-700 mb mixing ratios approaching 7-9 g/kg and 700-500 mb mixing ratios increasing by about 1.5 g/kg over yesterday. The highest mixing ratios are located over eastern Los Angeles County. MUCAPE values increase with daytime heating, maxing out between 1850-2550 J/kg over the eastern San Gabriel range. The steering flow is predominantly southeasterly, but it turns more northeasterly late in the day or during the evening. This could push some storms toward the coastal and valley areas toward the end of the day. PoPs were nudged up for the San Gabriel Valley.

There is a outside chance that a flash flood watch could be needed for this afternoon and evening in the San Gabriel Range, but PWAT values are lacking in the current model runs and the steering flow looks a tad too strong. That does not be mean that isolated or localized flooding cannot occur, it just means that more widespread slow moving storms are unlikely. Future shifts will need to monitor closely. Higher confidence exists in dangerous cloud-to-ground lightning and gusty and erratic outflow winds up to 35 mph. If you have outdoor activities planned for today, especially in the San Gabriels mountains or adjacent valley areas, be alert. Be on the lookout for clouds buildups and darkening clouds nearby. This could be your first precursor of a thunderstorm is approaching. Always remember, when thunder roars, go indoors. Seek shelter in a building or a hard topped vehicle.

With the upper-level trough in place and a persistent onshore flow, a cooling trend is likely to continue across the region for today. Low clouds and fog are pretty well entrenched west and northwest of Point Mugu, but middle and high level clouds are playing tricks on the marine layer inversion across Los Angeles County. Low clouds and fog should be less widespread over the Los Angeles County coast, but the remainder of the area, will see much more widespread low clouds and fog this morning, possibly dense at times. Clouds may struggle to clear again away from the land mass, possibly keeping some beach areas shrouded in cloud cover.

The upper-level trough of low pressure will start to move east on Sunday and the axis will clear the area late Sunday morning. Onshore flow looks to remain in place and keep a cooling trend in the mix. The marine layer depth does not change that much, hovering near 1000 feet deep. Low clouds and fog should be staple of the forecast, pushing into the coast and valley areas each night and morning through Tuesday.

Onshore pressure gradients turn rather strong ahead of an approaching trough on Monday. GFS and NAM-WRF model solutions indicate that surface gradients trending strongly onshore. KLAX- KDAG surface pressure gradients approach 8 mb onshore, and if there were day in the period when clouds may struggle to clear for most coastal and valley areas, it would be Monday. The forecast trends more pessimistic for Monday, but if 8 mb KLAX-KDAG surface pressure gradients materialize, clouds may struggle to clear from the Los Angeles Basin on Monday.

LONG TERM (TUE-FRI). 25/332 AM.

A dying frontal boundary will push down the coast between Monday night and Tuesday night. Model solutions continue to indicate the boundary falling apart as it pushes south, likely dying north of the area on Tuesday. There is outside chance of a few showers or sprinkles for northern San Luis Obispo County, but the main effects of this feature will be tightening the northerly gradient and enhancing the cooling trend. Gusty northwest to north winds are looking more likely along the Central Coast and into southern Santa Barbara County between Tuesday and Wednesday, with gales more likely across the adjacent coastal waters. There is a chance that northerly winds could develop through the Interstate 5 Corridor during this same time.

Cold air advection behind the dying boundary should scour the marine layer Wednesday. Mostly clear skies look to develop for most of the area late next week as offshore flow establishes beneath ridging aloft. A warming trend should be expected for latter part of next week.

AVIATION. 25/0023Z.

At 2251Z, the marine layer depth was around 900 feet deep at KLAX. The top of the marine inversion was around 2800 feet with a temperature near 25 degrees Celsius.

High confidence for valley TAFs, except KBUR where cigs are possible after 12Z. Moderate confidence in the current forecast for deserts and coastal terminals. The deserts may see additional reduced visibilities due to smoke, and there is a slight chance of thunderstorms by Saturday afternoon. Good confidence in marine layer clouds reaching the coasts, with higher confidence in timing and lower confidence in flight categories.

KLAX . The timing of the onset of lower flight conditions may be off +/- an hour or two. No significant east wind component expected.

KBUR . There is a 20 percent chance of IFR conditions between 13Z and 16Z Sat, otherwise high confidence for VFR conditions thru the period.

MARINE. 25/349 AM.

Outer waters . High confidence that winds and seas will remain below Small Craft Advisory (SCA) level thru Sun. There is a 30% chance of SCA level NW winds across the northern zone (PZZ670) Sun night. SCA conds are likely across the northern two zones (PZZ670/673 Mon thru Wed, and across the southern zone (PZZ676) Mon night thru Wed. There is a 30-40% chance of Gale Force winds across the outer waters Tue afternoon into early Wed morning.

For the inner waters north of Pt. Sal, winds will remain below SCA levels thru Mon morning. SCA level winds are likely during the afternoon/evening hours Mon and Tue. There is a 40% chance of SCA conds Wed.

For the SBA Channel and southern inner waters, winds will remain below SCA levels thru Tue morning. SCA level winds are likely during the afternoon/evening hours Tue. There is a 40% chance of SCA conds Wed.

Areas of dense fog will affect the coastal waters this morning.

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

.HAZARD POTENTIAL OUTLOOK (MON-FRI).

Gusty northwest winds are possible across San Luis Obispo and Santa Barbara Counties and adjacent coastal waters late Tuesday through Wednesday.



PUBLIC . Hall AVIATION . Phillips MARINE . DB SYNOPSIS . Hall

weather.gov/losangeles


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ICAC1 - 9410840 - Santa Monica Pier 21 mi51 min Calm G 1.9 62°F 66°F1015.2 hPa
46268 23 mi69 min 63°F 67°F2 ft
46221 - Santa Monica Bay, CA (028) 34 mi43 min 66°F3 ft
BAXC1 34 mi63 min WNW 4.1 G 6
PSXC1 34 mi51 min Calm G 1
PXAC1 34 mi57 min NW 1 G 2.9
PFDC1 36 mi57 min Calm G 1
PFXC1 36 mi51 min Calm G 1 63°F
OHBC1 - 9410660 - Los Angeles, CA 37 mi51 min 64°F1015 hPa
PRJC1 37 mi51 min Calm G 1.9
AGXC1 38 mi69 min N 2.9 G 5.1 64°F 1012.2 hPa (-0.3)
46256 39 mi43 min 62°F3 ft
46222 - San Pedro, CA (092) 44 mi43 min 62°F2 ft
46253 48 mi43 min 65°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 mi76 minESE 310.00 miFair64°F57°F78%1013.3 hPa
Van Nuys, Van Nuys Airport, CA12 mi78 minN 010.00 miFair65°F54°F68%1013.6 hPa
Los Angeles / USC Campus Downtown, CA17 mi77 minN 06.00 miFog/Mist62°F59°F90%1014.4 hPa
Santa Monica, Santa Monica Municipal Airport, CA18 mi78 minS 37.00 miOvercast61°F60°F97%1014.7 hPa
Hawthorne, Hawthorne Municipal Airport, CA23 mi76 minW 38.00 miFair62°F59°F90%1014.6 hPa
Los Angeles, Los Angeles International Airport, CA23 mi76 minW 66.00 miFog/Mist62°F58°F86%1014.4 hPa

Link to 5 minute data for KBUR

Wind History from BUR (wind in knots)
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Last 24hrCalmE3CalmCalmCalmSE5SE6S7S65SE8S8CalmNW5SE4S3W5SE8SE6CalmCalmS3E3S3
1 day agoCalmCalmSE3CalmCalmSE8SE94S7S8S6S7SE7SE5SE8SE7E9CalmE4CalmCalmCalmE4Calm
2 days agoCalmCalmCalmCalmCalmCalmSE5S8S8S9S10SE10SE6W7NW5W5W6--------------

Tide / Current Tables for Santa Monica, California
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Santa Monica
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Sat -- 12:23 AM PDT     3.80 feet High Tide
Sat -- 05:35 AM PDT     2.18 feet Low Tide
Sat -- 06:44 AM PDT     Sunrise
Sat -- 11:06 AM PDT     Moonset
Sat -- 11:57 AM PDT     5.07 feet High Tide
Sat -- 06:45 PM PDT     Sunset
Sat -- 07:05 PM PDT     1.22 feet Low Tide
Sat -- 09:34 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.83.73.432.52.22.22.533.74.44.95.14.94.33.52.71.91.41.21.31.72.22.7

Tide / Current Tables for Santa Monica, Municipal Pier, California
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Santa Monica
Click for Map
Sat -- 12:20 AM PDT     3.81 feet High Tide
Sat -- 05:35 AM PDT     2.12 feet Low Tide
Sat -- 06:44 AM PDT     Sunrise
Sat -- 11:06 AM PDT     Moonset
Sat -- 11:58 AM PDT     5.02 feet High Tide
Sat -- 06:45 PM PDT     Sunset
Sat -- 07:07 PM PDT     1.21 feet Low Tide
Sat -- 09:34 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.83.73.42.92.52.22.22.433.74.44.854.84.33.52.71.91.41.21.31.72.22.7

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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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