Saturday, February27, 2021
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Marine Weather and Tides
Lower Lake, 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 6:43AMSunset 6:02PM Saturday February 27, 2021 1:14 AM PST (09:14 UTC) Moonrise 6:41PMMoonset 7:22AM Illumination 100% Phase: Full Moon; Moon at 15 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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PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 838 Pm Pst Fri Feb 26 2021
.gale warning in effect through Saturday afternoon...
Tonight..NW winds 25 to 35 kt with gusts up to 40 kt. Wind waves 13 to 15 ft. NW swell 9 to 11 ft at 16 seconds.
Sat..NW winds 20 to 30 kt with gusts up to 35 kt. Wind waves 12 to 14 ft. NW swell 8 to 10 ft at 15 seconds.
Sat night..N winds 20 to 30 kt with gusts up to 35 kt. Wind waves 8 to 9 ft. NW swell 8 to 10 ft at 14 seconds.
Sun..NW winds 5 to 15 kt. Wind waves 5 to 6 ft. NW swell 6 to 8 ft at 13 seconds.
Sun night..N winds 5 to 10 kt. Wind waves 4 to 5 ft. NW swell 5 to 7 ft at 13 seconds.
Mon..S winds 5 to 10 kt. Wind waves 5 to 6 ft. NW swell 3 to 5 ft at 12 seconds.
Mon night..NW winds around 10 kt. Wind waves 6 to 7 ft. NW swell 2 to 4 ft at 11 seconds.
Tue..NW winds 10 to 20 kt. Wind waves 4 to 5 ft. NW swell 7 to 9 ft.
Wed..NW winds 5 to 15 kt. Wind waves around 2 ft. NW swell 7 to 9 ft.
PZZ500 838 Pm Pst Fri Feb 26 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gale force northwest winds continue over the waters this evening and will through early Saturday morning. Northern coastal waters can expect winds to diminish through Saturday afternoon, while the big sur coast south of point sur and all outer waters will remain at gale force not subsiding until late Saturday night. These winds will generate steep wind waves through Saturday night and bring hazardous conditions for smaller vessels. A moderate period northwest swell persists through the weekend.


7 Day Forecast for Marine Location Near Lower Lake, CA
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location: 38.89, -122.59     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 270637 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 1035 PM PST Fri Feb 26 2021

SYNOPSIS. Mild and dry weather expected through the weekend. Breezy north to east winds return tomorrow into Sunday morning. Unsettled weather is possible early next week, although the better chances are forecast late week.

DISCUSSION. The Evening Update: Weak/not consolidated energy will be diving SEwd into NV tonight, followed by stronger energy (vort max) diving into NV on Sat. It is this stronger energy that will kick up another round of Nly winds. WAD criteria seem to be problematic with the NAM MOS guidance indicating possible sustained WAD criteria around SAC/SCK and MOD. Trajectory of the NAM 925 mbs winds suggest that the Solano Co area will also be impacted by at least near WAD criteria winds.

Previous Discussion.

Early this afternoon, clear skies and mild temperatures were noted across much of the area. Some high clouds may stream over far northern California as a trough works its way towards the Four Corners region tonight and through the weekend. Precipitation stays north of the area today, although a stray light shower over northern Shasta County is not out of the question.

The aforementioned system will bring some breezy winds back to NorCal Saturday into Sunday, along with some slightly cooler temperatures than those of today. North winds in the Valley may gust up to 35 mph tomorrow, with the strongest winds in the foothills and the mountains later in the evening through Sunday morning. Mountain areas may see gusts from 35 to 45 mph. A Wind Advisory is not anticipated at this time, although any lightweight loose objects could be blown around and driving a high profile vehicle may be difficult at times.

Ridging then moves over the area again on Sunday with lighter winds and warming temperatures returning. While ensemble guidance is still varied, latest deterministic guidance looks to favor a closed low developing off the coast and moving south, leaving NorCal dry for the beginning of next week. Will need to continue to assess this latest forecast, but for now have left low end PoP chances for the northern mountains, Western Plumas County, and the Sierra.

EXTENDED DISCUSSION (Tuesday THROUGH Friday). There remains some uncertainty early next week with respect to precipitation chances. Both Euro and GFS ensemble means only advertise between zero and approx a tenth of an inch. No matter the interpretation -- dry vs very light rain -- little to no precipitation-related impacts are expected in northern California early next week. Highs are forecast to be at or slightly above early March climatological normal values.

Models continue to hint at better rain and snow chances late next week and next weekend. Still too early to evaluate potential impacts, but will keep an eye on trends. Climate Prediction Center 6-10 and 8-14 day precipitation outlooks do have northern California with favored odds of above normal precipitation at that time. // Rowe

AVIATION. VFR conditions next 24 hours with localized northerly wind gusts of 15 to 20 kt between 22Z Friday and 03Z Saturday. Northerly winds will increase and become gusty during the day on Saturday.

STO WATCHES/WARNINGS/ADVISORIES. None.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
BDXC1 47 mi68 min 58°F
SFXC1 - San Francisco Bay Reserve, CA 56 mi89 min W 5.1 46°F 1019 hPa38°F
ANVC1 - 9416841 - Arena Cove, CA 59 mi56 min W 5.1 G 12 46°F 1023.6 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa, Santa Rosa Sonoma County Airport, CA29 mi21 minNW 14 G 2010.00 miFair46°F31°F56%1019.9 hPa

Link to 5 minute data for KSTS

Wind History from STS (wind in knots)
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1 day agoN12N12NW4W5CalmNW3NW3CalmCalmW3Calm3W4SW5S6S6S4CalmCalmCalmNW4N1134
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Tide / Current Tables for Napa, Napa River, Carquinez Strait, California
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Napa
Click for Map
Sat -- 12:19 AM PST     Full Moon
Sat -- 02:17 AM PST     6.66 feet High Tide
Sat -- 06:43 AM PST     Sunrise
Sat -- 07:19 AM PST     Moonset
Sat -- 07:55 AM PST     1.94 feet Low Tide
Sat -- 01:29 PM PST     7.75 feet High Tide
Sat -- 06:00 PM PST     Sunset
Sat -- 06:41 PM PST     Moonrise
Sat -- 08:30 PM PST     -0.52 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.55.96.66.55.64.43.12.21.92.53.75.26.77.67.76.95.53.61.80.3-0.4-0.40.52

Tide / Current Tables for Fort Ross, California
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Fort Ross
Click for Map
Sat -- 12:19 AM PST     Full Moon
Sat -- 04:33 AM PST     1.87 feet Low Tide
Sat -- 06:47 AM PST     Sunrise
Sat -- 07:23 AM PST     Moonset
Sat -- 10:22 AM PST     6.10 feet High Tide
Sat -- 05:08 PM PST     -0.50 feet Low Tide
Sat -- 06:04 PM PST     Sunset
Sat -- 06:44 PM PST     Moonrise
Sat -- 11:40 PM PST     5.26 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.94.23.32.51.91.92.53.44.55.5665.342.41-0.1-0.5-0.20.61.83.14.35.1

Weather Map
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wmap_P
GEOS Local Image of CentralWestCoast    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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Ground Weather Radar Station




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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.