Tuesday, March9, 2021
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Marine Weather and Tides
Laguna Niguel, CA

Version 3.4
NOTICE
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 6:06AMSunset 5:55PM Tuesday March 9, 2021 1:42 AM PST (09:42 UTC) Moonrise 5:10AMMoonset 3:23PM Illumination 18% 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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PZZ750 Coastal Waters From San Mateo Point To The Mexican Border And Out To 30 Nm- 849 Pm Pst Mon Mar 8 2021
.small craft advisory in effect from 1 am Tuesday through 9 pm Tuesday...
Tonight..Wind nw 10 to 20 kt with gusts to 25 kt. Wind waves 4 ft. SWell W 4 to 6 ft at 7 seconds.
Tue..Wind W 10 to 20 kt with gusts to 25 kt. Wind waves 4 ft. SWell W 5 to 6 ft at 7 seconds.
Tue night..Wind W 10 to 15 kt with gusts to 20 kt. Wind waves 4 ft. SWell W 4 to 5 ft at 6 seconds. Chance of rain.
Wed..Wind W 15 to 20 kt with gusts to 25 kt. Wind waves 5 ft. SWell W 4 to 5 ft at 6 seconds. Rain. Slight chance of tstms in the afternoon.
Wed night..Wind W 10 to 15 kt with gusts to 20 kt. Wind waves 4 ft. SWell W 4 to 6 ft at 10 seconds. Showers likely and slight chance of tstms.
Thu..Wind nw 10 to 15 kt. Wind waves 3 ft. SWell W 4 to 6 ft. Showers likely in the morning. Slight chance of tstms. Chance of showers in the afternoon.
Thu night..Wind nw 10 to 15 kt. Wind waves 3 ft. SWell W 4 to 5 ft. Slight chance of tstms in the evening. Chance of showers.
Fri..Wind W 10 kt. Wind waves 2 ft or less. SWell W 4 to 6 ft. Slight chance of showers.
Fri night..Wind W 10 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft.
Sat..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 3 ft.
Sat night..Wind nw 10 kt. Gusts to 15 kt in the evening. Wind waves 3 ft in the evening...becoming 2 ft or less. SWell W 2 to 3 ft.
PZZ700 849 Pm Pst Mon Mar 8 2021
Synopsis for the far southern california coast.. A cold storm over the pacific northwest will move south Tuesday and Wednesday. This system will bring gusty west winds Tuesday, and showers with isolated Thunderstorms Wednesday and Thursday. Mariners should prepare for adverse weather at times with this cold winter storm. Improving conditions are forecast over the weekend.


7 Day Forecast for Marine Location Near Laguna Niguel, CA
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location: 33.52, -117.69     debug


Area Discussion for - San Diego, CA
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FXUS66 KSGX 090522 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 922 PM PST Mon Mar 8 2021

SYNOPSIS. Tuesday will be cooler across the board, with gusty winds across the mountains and deserts preceding the approaching storm system. This system will bring widespread rain, heavy low-elevation snow, and a few thunderstorms to the region Wednesday and Thursday. The Winter Storm Watch was upgraded to a Winter Storm Warning this evening. The cold will be very noticeable mid week, with highs locally 20 degrees below normal Wednesday and Thursday. Some showers may continue into Friday, especially in the mountains and High Desert, before the storm exits the region and ushers in warmer and drier weather for the weekend.

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

Highlights .

* Winter Storm Warning for mountains starting Tuesday night * Heavy, low elevation snow to impact some major passes * Widespread rain and isolated thunderstorms Wed-Thu * Much colder than normal mid week * Showers may continue into Friday. Drier for the weekend.

We may have recently entered meteorological spring, but winter is about to come knocking back at our door. The low pressure trough centered off the PacNW coast will continue to deepen into Tuesday, ushering in noticeably cooler temperatures, particularly for the mountains and deserts. As onshore pressure gradients tighten, winds will respond accordingly, with gusty west winds surfacing across the desert-facing mountain slopes and passes. These will persist into Wednesday, and locally longer, especially for the San Gorgonio Pass area.

It is not until Tuesday night that the first few pre-frontal showers will make an appearance, but the more widespread precipitation is still slated for Wednesday and Thursday. A mostly weak cold front Wednesday will bring largely moderate rain and the first round of heavy snow to the mountains. 700 mb temperatures lowering to around -10 C Wednesday will bring down snow levels to around 4,000 ft, locally lower in San Bernardino County. Instability will increase in the afternoon, with ample cold air aloft and favorable jet positioning leading to scattered post- frontal showers and likely a few thunderstorms west of the mountains. Temperatures will continue to fall, with highs a good 10 to 20 degrees below normal Wednesday, and locally even 25 degrees below average.

The cold will only reaffirm its grip over the region Wednesday night and Thursday, as the approaching low pressure center continues forcing snow levels to fall. Snow can be expected above 3,000 to 3,500 feet for northern portions of our forecast area Thursday, and around 500 ft higher in San Diego County. There is high confidence in significant travel impacts to Cajon Pass and potentially I-8 through Laguna Summit. Highs both days will struggle to hit the mid to high 50's across most of our coastal and valley areas. With the jet streak remaining due south Thursday as the trough digs over SoCal, we'll remain under a dynamically favorable environment for thunderstorms, with precipitation largely of showery characteristics.

Although the bulk of the precipitation will fall through Thursday night, we're not entirely out of the woods for Friday either. As the low tracks inland and northerly flow rotates along its western periphery, there's decent potential for additional wrap-around moisture and showers, mainly for the mountains and High Desert. Both ensemble guidance and local WRF products hint at this potential, and a glance at the ECMWF Shift of Tails suggests we cannot rule out significant additional snowfall impacts for these areas if this scenario plays out.

Weak ridging will fill in for the weekend, bringing us an increase in temperatures and drier weather. The pattern beyond the weekend looks like a "time will tell" situation, with a wide realm of possibilities. For now, the focus remains on the upcoming significant winter storm. For more information on snow totals and snow levels, see the Winter Storm Warning, and for more information on rainfall totals and rates, see the Hydrology section below.

AVIATION. 090415Z . Coast/Valleys . Mostly VFR conditions through 22Z Tuesday with SCT020 BKN200 and only ocnl BKN020 at times. West winds increasing after 18Z Tuesday to 15-25 kt at the coastal and valley airports with gusts to 30 kt.

Mountains/Deserts . Gusty west winds 20-30 kt with gusts to 45 kt in the mountains and some desert areas through Tuesday with LLWS and moderate up/downdrafts.

MARINE. A Small Craft Advisory is in effect through 9 PM Tuesday. Northwest winds 15-25 kt over the Outer Waters will move into the Inner Waters after midnight and continue through Tuesday afternoon.

Gusty west winds at times Tuesday night, Wednesday and Thursday as a cold winter storm moves across Southern California. Rain is likely Wednesday with scattered showers Thursday. Thunderstorms with strong winds, rough seas and lightning are also possible.

BEACHES. Elevated surf from 3 to 6 feet Tuesday. Gusty west winds 15 to 30 mph at the beaches in the afternoon. Above average surf from 3 to 6 feet continues Wednesday and Thursday with showers and possible thunderstorms.

HYDROLOGY. A slow moving storm system will bring periods of rain and mountain snow beginning early Wednesday, and possibly continuing through Friday, with the heaviest precipitation expected Wednesday into Thursday. The main frontal band will move through on Wednesday, with mostly moderate rain. This will be followed by widespread scattered showers and likely a few thunderstorms through Thursday. Thus, storm totals will be spread out over several days, with the main impact being snowfall. Since the storm will be quite cold, snow levels may be as low as 2500 FT at times with convective showers. Moisture will be limited with this event, so rainfall totals are not excessive for a Winter Storm. Current estimates range from 0.50 to locally 1.25 inches for the coast and valleys, and 1.5 to locally 2.5 inches (liquid equivalent) in the mountains (mostly as snow). The deserts will be drier, and are expected to mostly pick up 0.25" or less, with locally higher amounts up to around 0.30" for the High Desert.

Rainfall rates will be light to moderate overall (0.10 to 0.30/hr.), with some briefly heavier rainfall rates possible during heavier showers and thunderstorms. Some runoff is likely, with the greatest impact in urban and poorly drained areas, but widespread flooding and mainstem river flooding is not likely. Snow levels near 4500 feet will lower to around 4000 feet Wednesday afternoon and 3500 feet or less for Wednesday night and Thursday. This will further limit any significant runoff, and eliminate the risk of debris flows for the El Dorado and Apple burn scars.

Showers should taper off on Friday, but there's potential for wrap-around moisture to enhance snowfall totals in the mountains and generate additional showers for the High Desert before the system completely exits the region Friday night.

SGX WATCHES/WARNINGS/ADVISORIES. CA . Winter Storm Warning from 10 PM Tuesday to 10 PM PST Thursday for Riverside County Mountains-San Bernardino County Mountains-San Diego County Mountains.

Wind Advisory until 4 AM PST Friday for San Gorgonio Pass Near Banning.

PZ . Small Craft Advisory until 9 PM PST Tuesday for Waters from San Mateo point to the Mexican Border and out to 60 nm.



SYNOPSIS/PUBLIC DISCUSSION/HYDROLOGY . Rodriguez AVIATION/MARINE/BEACHES . Moede


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46224 - Oceanside Offshore, CA (045) 26 mi46 min 59°F5 ft
46253 26 mi46 min 58°F6 ft
46256 30 mi46 min 57°F3 ft
PRJC1 30 mi54 min N 5.1 G 6
AGXC1 32 mi60 min N 5.1 G 7 55°F 1018.7 hPa
PFXC1 32 mi54 min NNW 5.1 G 6 56°F
PFDC1 33 mi60 min W 5.1 G 7
PSXC1 33 mi54 min NW 2.9 G 2.9
46222 - San Pedro, CA (092) 34 mi51 min 58°F6 ft
BAXC1 34 mi66 min WNW 5.1 G 6
OHBC1 - 9410660 - Los Angeles, CA 34 mi54 min 60°F1021.2 hPa
PXAC1 35 mi66 min NNW 4.1 G 5.1
46225 - Torrey Pines Outer, CA (100) 44 mi46 min 59°F5 ft
46266 45 mi42 min 55°F 59°F5 ft

Wind History for Los Angeles Pier J, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
John Wayne-Orange County Airport, CA15 mi49 minS 310.00 miFair52°F46°F80%1020.7 hPa
Oceanside, Camp Pendleton, Marine Corps Air Station, CA24 mi47 minNE 38.00 miFair48°F44°F86%1021 hPa

Link to 5 minute data for KSNA

Wind History from SNA (wind in knots)
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Last 24hrE6CalmSE3CalmSE4SE44S5SW3S10S9SW7SW8
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SW7SW7SW8W4W3CalmCalmSW4SW5NE3S3
1 day agoCalmNE4E3E5E4E5SE4CalmS5CalmS6S7SW7S10S10S8S8S5SE6SE6E5SE5CalmSE3
2 days agoE3SE3CalmE6S3CalmE5SW7S9SW11SW10S10SW9SW9SW9SW7SW4W5SW4CalmS3CalmE4SE4

Tide / Current Tables for San Clemente, California
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San Clemente
Click for Map
Tue -- 12:16 AM PST     1.93 feet Low Tide
Tue -- 04:09 AM PST     Moonrise
Tue -- 06:08 AM PST     Sunrise
Tue -- 06:13 AM PST     5.51 feet High Tide
Tue -- 01:22 PM PST     -1.04 feet Low Tide
Tue -- 02:22 PM PST     Moonset
Tue -- 05:53 PM PST     Sunset
Tue -- 07:49 PM PST     4.17 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.922.63.44.35.15.55.34.63.420.6-0.5-1-0.9-0.20.92.23.344.23.83.22.4

Tide / Current Tables for Newport Bay Entrance, Corona del Mar, California (2)
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Newport Bay Entrance
Click for Map
Tue -- 12:17 AM PST     2.13 feet Low Tide
Tue -- 04:11 AM PST     Moonrise
Tue -- 06:09 AM PST     Sunrise
Tue -- 06:16 AM PST     5.44 feet High Tide
Tue -- 01:26 PM PST     -0.90 feet Low Tide
Tue -- 02:23 PM PST     Moonset
Tue -- 05:55 PM PST     Sunset
Tue -- 07:59 PM PST     4.06 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.12.22.73.44.355.45.34.63.52.10.8-0.3-0.8-0.8-0.20.823.13.84.13.83.32.6

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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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