Wednesday, January27, 2021
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L-36.com

Marine Weather and Tides
Lake Forest, 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 6:48AMSunset 5:18PM Wednesday January 27, 2021 8:34 AM PST (16:34 UTC) Moonrise 5:19PMMoonset 7:14AM Illumination 100% Phase: Full Moon; Moon at 14 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- 327 Am Pst Wed Jan 27 2021
.small craft advisory in effect from 9 am pst this morning through late Thursday night...
Today..SE to S winds 10 to 15 kt, becoming 15 to 25 kt by mid to late morning, strongest western portion. Combined seas 4 to 6 ft dominant period 14 seconds. Slight chance of rain.
Tonight..SE to S winds 15 to 25 kt, strongest western portion. Combined seas 5 to 7 ft dominant period 12 seconds. Slight chance of rain.
Thu..SE to S winds 15 to 25 kt with local gusts to 30 kt, strongest western portions. Combined seas 7 to 9 ft dominant period 10 seconds. Chance of rain in the morning, then rain likely.
Thu night..SE to S winds 15 to 25 kt with gusts to 30 kt, becoming sw 10 to 20 kt late. Combined seas 6 to 8 ft dominant period 15 seconds. Rain. Slight chance of tstms after midnight.
Fri..W winds 10 to 15 kt. Wind waves 2 ft. W swell 4 to 6 ft at 14 seconds. Rain in the morning. Slight chance of tstms. Chance of showers in the afternoon.
Fri night..W winds 10 to 15 kt, becoming 5 to 10 kt after midnight. Wind waves 2 ft or less. W swell 4 to 5 ft at 15 seconds.
Sat..W to nw winds 5 to 10 kt. Wind waves 2 ft or less. W swell 3 to 5 ft.
Sun..W to nw winds 10 to 15 kt. Wind waves 2 ft. Mixed swell W 2 to 3 ft and S 2 ft.
PZZ600 327 Am Pst Wed Jan 27 2021
Synopsis for the southern california coast and santa barbara channel including the channel islands national marine sanctuary and national park..At 11z, or 3 am pst, a 991 mb low was centered 400 nm west of portland, oregon, with a cold front extending southward. Strong southerly winds will affect the coastal waters ahead of the front as it slowly moves toward the coastal waters today through Thursday. Storm force winds will affect the northern outer and northern inner waters, with gale force winds across most other areas.


7 Day Forecast for Marine Location Near Lake Forest, CA
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location: 33.71, -117.7     debug


Area Discussion for - San Diego, CA
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FXUS66 KSGX 271257 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 457 AM PST Wed Jan 27 2021

SYNOPSIS. A low pressure system moving slowly southward along the West Coast will bring increasing clouds into Thursday with slow warming. For late in the day Thursday into Thursday night, precipitation will spread across southwestern California becoming heavy at times late Thursday night into Friday morning. Showers will continue Friday afternoon and end from the northwest Friday night. Saturday through Monday will be dry with a warming trend with high temperatures on Monday near average. A low pressure system moving inland along the West Coast could bring some showers around Tuesday.

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

SHORT TERM (Today through Friday night). A low pressure system moving southward off the West Coast will direct heavy precipitation into central California with lighter precipitation not extending much past Los Angeles County into early Thursday. There will be warming for today and Thursday with increasing high clouds. Friday will be significantly cooler, but not as cold as early this week.

For late in the day Thursday into Thursday night, precipitation will spread across southwestern California becoming heavy at times late Thursday night into Friday morning. Showers will continue Friday afternoon and end from the northwest Friday night. The slightly slower timing of the ECMWF and its ensemble members would have more substantial precipitation lingering into Friday evening, especially for San Diego County.

An atmospheric river will be feeding moisture into the system as it moves across the area Thursday night into Friday. Snow levels will rise to 5500 to 6000 feet Thursday night, then fall to around 4500 feet Friday.

Rainfall is expected to range from around 1.5 inch near the coast to 2 to 3 inches in the mountains with 3 to 5 inches on south facing slopes of the San Bernardino County mountains with locally greater amounts. High desert areas are expected to receive one half to one inch with one quarter to one half inch in the lower deserts. Snowfall of 4 to 8 inches is expected above 5000 feet, 8 to 12 inches above 6000 feet, and 12 to 24 inches above 7000 feet.

Runoff is expected to be greater due to heavier rainfall on soils saturated by recent precipitation. With higher snow levels, snow melt will add to the runoff, especially in the San Bernardino County mountains.

LONG TERM (Saturday through Thursday). After any lingering showers end early Saturday, the weekend into Monday will be dry with a warming trend with high temperatures warming to near average on Monday. The next chance for precipitation is around Tuesday and Tuesday night as a trough of low pressure moves inland along the West Coast.

AVIATION. 271030Z . Two cloud layers will continue to move into the region today with greater coverage in the north and west. One layer based around 4000 feet MSL and the other around 10000 feet MSL. VFR conditions will prevail today and tonight.

MARINE. A new storm system will move through coastal waters Thursday night with increasing southerly winds, turning west Friday. Some gusts could exceed 20 knots, and a slight chance of thunderstorms late Thursday into Friday could lead to hazardous marine conditions. Otherwise, no additional marine weather hazards are expected before and after the storm.

BEACHES. Surf will increase again coincident with the next storm Thursday and Friday with a high rip current risk. There is also a slight chance of thunderstorms late Thursday into Friday.

HYDROLOGY. Lighter precipitation is not expected to extend eastward much past Los Angeles County into early Thursday. For late in the day Thursday into Thursday night, precipitation will spread across southwestern California becoming heavy at times late Thursday night into Friday morning. Showers will continue Friday afternoon and end from the northwest Friday night. The slightly slower timing of the ECMWF and its ensemble members would have more substantial precipitation lingering into Friday evening, especially for San Diego County. There is a slight chance for thunderstorms for Thursday night and Friday.

An atmospheric river will be feeding moisture into the system as it moves across the area Thursday night into Friday. Snow levels will rise to 5500 to 6000 feet Thursday night, then fall to around 4500 feet Friday.

Rainfall is expected to range from around 1.5 inch near the coast to 2 to 3 inches in the mountains with 3 to 5 inches on south facing slopes of the San Bernardino County mountains with locally greater amounts. High desert areas are expected to receive one half to one inch with one quarter to one half inch in the lower deserts. Snowfall of 4 to 8 inches is expected above 5000 feet, 8 to 12 inches above 6000 feet, and 12 to 24 inches above 7000 feet.

Runoff is expected to be greater due to heavier rainfall on soils saturated by recent precipitation. With higher snow levels, snow melt will add to the runoff, especially in the San Bernardino County mountains.

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

SGX WATCHES/WARNINGS/ADVISORIES. CA . Winter Storm Watch from Thursday afternoon through Friday afternoon for San Bernardino County Mountains.

Winter Storm Watch from Thursday evening through Friday afternoon for Riverside County Mountains.

PZ . NONE.



PUBLIC/HYDROLOGY . 17 AVIATION/MARINE/BEACHES . MM


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PRJC1 26 mi46 min E 9.9 G 13
46253 27 mi38 min 57°F4 ft
46256 27 mi38 min 56°F3 ft
PFXC1 27 mi46 min E 8.9 G 11 51°F
PSXC1 28 mi46 min E 8 G 11
AGXC1 29 mi58 min E 14 G 16 51°F 1019.6 hPa
BAXC1 29 mi58 min E 11 G 17
PFDC1 29 mi58 min ENE 13 G 15
OHBC1 - 9410660 - Los Angeles, CA 30 mi46 min 58°F1022.5 hPa
PXAC1 30 mi64 min E 5.1 G 7
46222 - San Pedro, CA (092) 33 mi43 min 57°F4 ft
46224 - Oceanside Offshore, CA (045) 39 mi38 min 57°F3 ft
ICAC1 - 9410840 - Santa Monica Pier 47 mi46 min E 8 G 13 50°F 57°F1022.3 hPa

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, CA9 mi41 minE 610.00 miMostly Cloudy51°F36°F56%1022.1 hPa
Corona Airport, CA14 mi38 minno data10.00 miOvercast41°F38°F89%1022.8 hPa
Chino, Chino Airport, CA18 mi41 minN 010.00 miMostly Cloudy45°F37°F74%1022.9 hPa
Fullerton, Fullerton Municipal Airport, CA19 mi41 minE 510.00 miOvercast48°F34°F58%1022 hPa
Riverside Municipal Airport, CA21 mi41 minNNE 310.00 miMostly Cloudy42°F35°F76%1021.9 hPa

Link to 5 minute data for KSNA

Wind History from SNA (wind in knots)
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Last 24hrCalmE3CalmNW3S7SW10S8S8S6S5SE3E4E6SE5E5E5E5E5E6E5E3SE4E5E6
1 day ago6W10
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W7--CalmCalm3CalmCalmCalmNE3CalmCalmCalmCalmCalm
2 days agoE3CalmS8S5S8S7S9S10S11SW4SW6CalmSW6W6W6SW5SW6S6S4CalmW8
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Tide / Current Tables for Newport Bay Entrance, Corona del Mar, California
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Newport Bay Entrance
Click for Map
Wed -- 01:29 AM PST     2.15 feet Low Tide
Wed -- 06:14 AM PST     Moonset
Wed -- 06:50 AM PST     Sunrise
Wed -- 07:44 AM PST     6.14 feet High Tide
Wed -- 03:01 PM PST     -1.06 feet Low Tide
Wed -- 04:20 PM PST     Moonrise
Wed -- 05:18 PM PST     Sunset
Wed -- 09:30 PM PST     3.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.52.22.22.63.44.45.366.15.64.63.11.60.2-0.7-1.1-0.801.22.33.23.73.73.3

Tide / Current Tables for Newport Bay Entrance, Corona del Mar, California (2)
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Newport Bay Entrance
Click for Map
Wed -- 01:34 AM PST     2.18 feet Low Tide
Wed -- 06:14 AM PST     Moonset
Wed -- 06:50 AM PST     Sunrise
Wed -- 07:46 AM PST     6.00 feet High Tide
Wed -- 03:05 PM PST     -0.96 feet Low Tide
Wed -- 04:20 PM PST     Moonrise
Wed -- 05:18 PM PST     Sunset
Wed -- 09:35 PM PST     3.73 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.62.22.22.63.34.35.25.865.64.63.21.70.4-0.6-1-0.70.11.12.33.23.63.73.3

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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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.