Monday, September20, 2021
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Marine Weather and Tides
Beaumont, 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 6:33AMSunset 6:49PM Sunday September 19, 2021 9:39 PM PDT (04:39 UTC) Moonrise 6:36PMMoonset 5:07AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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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PZZ750 Coastal Waters From San Mateo Point To The Mexican Border And Out To 30 Nm- 135 Pm Pdt Sun Sep 19 2021
Tonight..Wind W to 10 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 7 seconds and S 2 ft at 14 seconds.
Mon..Wind variable less than 10 kt...becoming S 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 3 ft at 8 seconds and S 2 ft at 14 seconds.
Mon night..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 11 seconds and S 2 ft at 14 seconds.
Tue..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 ft at 13 seconds and S 2 ft at 13 seconds.
Tue night..Wind variable less than 10 kt...becoming nw 10 kt after midnight. Wind waves 2 ft or less. Mixed swell W 1 to 2 ft at 12 seconds and sw 2 ft at 13 seconds.
Wed..Wind nw 10 to 15 kt. Wind waves 2 ft or less...becoming 3 ft in the afternoon. Mixed swell W 1 to 3 ft and sw 2 ft.
Wed night..Wind nw 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and sw 2 ft.
Thu..Wind nw 10 kt. Gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell nw 2 to 3 ft and S 1 to 2 ft.
Thu night..Wind nw 10 kt. Gusts to 15 kt in the evening. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 1 to 2 ft.
Fri..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft.
Fri night..Wind nw 10 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 ft and S 2 ft.
PZZ700 135 Pm Pdt Sun Sep 19 2021
Synopsis for the far southern california coast..At 1 pm, a 1022 mb high was about 90 miles west of san francisco and a 1006 mb low was just west of lake havasu. Weak to moderate onshore flow will prevail through Thursday. A coastal eddy is possible Monday and Tuesday.


7 Day Forecast for Marine Location Near Beaumont, CA
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location: 33.85, -117     debug


Area Discussion for - San Diego, CA
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FXUS66 KSGX 200417 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 917 PM PDT Sun Sep 19 2021

SYNOPSIS. Slow warming will occur through mid week as onshore winds turn offshore inland. The marine layer will become shallower, with limited night and morning low clouds. An early season storm system from the north will develop near Southern California later this week. It will bring more clouds, cooling, and perhaps even a few scattered showers or thunderstorms anytime from Thursday, into the weekend.

DISCUSSION. FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE . SAN DIEGO . WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES .

Satellite imagery this evening showed clearing over the coastal waters. Some patchy stratus was trying to hold on in the CA Bight, but most clouds were south of the International Border at 7 PM PDT. There was another patch off of Point Conception drifting southward, but it was well offshore. The 00Z Miramar sounding still had a fairly deep inversion base near 1800 FT MSL, but the column had really dried in the mid-levels with a PW now below 1/2 inch. Our sfc pressure gradient over SoCal this evening is trending offshore now from the NE, but still solidly onshore to the lower deserts.

Given the trends in the stratus, suspect we will see much less overnight into Mon morning. Trends are in place for the forecast warming over the next couple of days, so no forecast updates are planned.

From previous discussion .

-Forecast Highlights-

* Warming conditions through midweek; Heat peaks inland Wednesday * Elevated fire weather conditions inland, especially near passes * Showers/tstorms possible late week, especially in the mountains

Drying is occurring today behind an upper trough passing by to the north. Surface ridging building into the Great Basin behind the trough will set up weak offshore winds over SoCal Monday-Tuesday/weak Santa Ana winds, mainly confined along the coastal mountain slopes and immediately below passes and canyons with gusts looking to be no more than about 30 mph and confined to small areas. Temperatures will continue to warm through mid week with the peak of the heat occurring on Wednesday when temperatures will run 5-10F degrees above normal before slow cooling occurs late in the week.

The weather pattern late in the week becomes more uncertain. Global models and their ensembles support another upper trough moving into the Pacific Northwest with a closed low moving south and eventually cutting off close by, most likely just off to our west or northwest. This position would allow for moisture to increase from the south as well as allow for some increasing instability.

The last few runs of the GEFS and EPS show quite a few members (at least half) producing some rain over Big Bear, for example. So confidence is increasing that some shower and thunderstorm activity could impact especially the mountains late this week, enough so that a slight chance of thunderstorms was added to the mountains in the Thursday-Saturday timeframe. Details remain uncertain in terms of coverage and amount of shower/tstorm activity. Upper dynamics/instability may allow some showers and tstorms to occur away from the mountains, especially the inland valleys and deserts. However, NBM probabilities each day continue low, at around 10%, so for now only included the slight chance of tstorms in the mountains at this time, where the risk is highest. Cut off lows can be difficult to forecast, so we will continue to monitor trends in the days to come.

By Sunday 9/26 and the beginning of next week, the upper low will most likely move away from our region to the northeast with dry and seasonal weather being favored.

AVIATION. 200400Z . Coast/Valleys . Patchy BKN stratus will occur within 10 miles of the coast at times overnight, mainly 09Z-16Z Mon. Bases will be 1000-1300 ft MSL with tops to 1500 ft MSL. Local vis 3-5 miles will occur over higher coastal terrain. Mostly clear skies with unrestricted vis will prevail after 16Z Mon, with the patchy stratus likely again late Mon night near the coast.

Mountains/Deserts . Mostly clear with unrestricted vis through Mon night.

MARINE. No hazardous marine weather is expected through Friday.

FIRE WEATHER. Gusty west to southwest 35-40 mph winds near the passes this evening will weaken late tonight and turn offshore by Monday morning.

Monday and Tuesday, warmer and drier weather is expected, as weak to locally moderate offshore flow prevails along the coastal slopes and through the passes. Northerly winds, becoming northeast to east 15 to locally 30 MPH are possible in wind-prone areas, with lowering minimum relative humidity values to 15-20%. It will be noticeably warmer on Monday, with Tue/Wed highs from 5-10 degrees above average. Closer to the coast, a shallow marine layer is expected to persist, keeping much higher relative humidity in place.

SKYWARN. Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions.

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

PUBLIC/FIRE WEATHER . 10/Gregoria AVIATION/MARINE . Maxwell


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46224 - Oceanside Offshore, CA (045) 53 mi43 min 70°F3 ft

Wind History for Los Angeles Pier J, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
March Air Reserve Base, CA15 mi42 minN 010.00 miFair72°F52°F50%1013.9 hPa
San Bernardino Intl. Airport, CA22 mi1.8 hrsWSW 810.00 miFair75°F52°F44%1012.9 hPa

Link to 5 minute data for KRIV

Wind History from RIV (wind in knots)
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Last 24hrW4NW3CalmCalmNW4CalmCalmCalmCalmCalmCalmNE3W3W4NW3NW5NW8NW9NW7W10W7NW7NW10Calm
1 day agoNW7W4NW5NW4NW4NW4NW4NW3NW5NW3NW4N3NW8NW6NW7NW7W10W7NW9NW11NW10NW8NW9NW7
2 days agoNW4CalmCalmN3NW3NW4CalmNW3W3W3NW4CalmW3NW5NW7NW9NW7S5W4W8W7W7W6NW6

Tide / Current Tables for San Clemente, California
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San Clemente
Click for Map
Mon -- 03:33 AM PDT     -0.41 feet Low Tide
Mon -- 06:11 AM PDT     Moonset
Mon -- 06:37 AM PDT     Sunrise
Mon -- 09:45 AM PDT     5.26 feet High Tide
Mon -- 03:38 PM PDT     0.77 feet Low Tide
Mon -- 04:54 PM PDT     Full Moon
Mon -- 06:49 PM PDT     Sunset
Mon -- 07:07 PM PDT     Moonrise
Mon -- 09:36 PM PDT     5.71 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.21.70.4-0.3-0.30.31.534.25.15.24.83.82.61.60.90.81.42.43.74.95.65.75.1

Tide / Current Tables for Newport Bay Entrance, Corona del Mar, California
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Newport Bay Entrance
Click for Map
Mon -- 03:37 AM PDT     -0.19 feet Low Tide
Mon -- 06:12 AM PDT     Moonset
Mon -- 06:38 AM PDT     Sunrise
Mon -- 09:49 AM PDT     5.14 feet High Tide
Mon -- 03:37 PM PDT     0.99 feet Low Tide
Mon -- 04:54 PM PDT     Full Moon
Mon -- 06:50 PM PDT     Sunset
Mon -- 07:08 PM PDT     Moonrise
Mon -- 09:42 PM PDT     5.72 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.420.7-0-0.10.41.52.94.14.95.14.73.82.71.71.111.52.53.74.85.65.75.2

Weather Map
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GEOS Local Image of Southwest    EDIT
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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