Wednesday, March3, 2021
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Marine Weather and Tides
Sheridan, 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 6:32AMSunset 6:01PM Wednesday March 3, 2021 3:53 PM PST (23:53 UTC) Moonrise 11:27PMMoonset 9:19AM Illumination 73% Phase: Waning Gibbous; Moon at 20 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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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 226 Pm Pst Wed Mar 3 2021
Rest of today..SW winds 5 to 15 kt with gusts up to 25 kt.
Tonight..SW winds 5 to 15 kt.
Thu..SW winds 5 to 15 kt.
Thu night..SW winds 5 to 15 kt.
Fri..SW winds 5 to 15 kt. A slight chance of rain.
Fri night..SW winds 10 to 20 kt. Rain.
Sat..W winds 5 to 15 kt.
Sun..W winds up to 10 kt. A chance of rain.
PZZ500 226 Pm Pst Wed Mar 3 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Northwest swell diminishing today. On Thursday, gusty south winds will develop over the northern coastal waters. Moderate period northwest swell increases to long period swell during the day Thursday into early Friday. A slow moving low pressure system arrives from the northwest with rain Friday evening through Saturday.


7 Day Forecast for Marine Location Near Sheridan, CA
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location: 38.97, -121.35     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 032257 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 257 PM PST Wed Mar 3 2021

SYNOPSIS. Dry and mild weather through Friday. Rain and mountain snow chances return over the weekend and early next week.

DISCUSSION. A closed off upper level low is spinning through SoCal this afternoon bringing some beneficial rain and snow to the southern part of the state. Outside of an isolated flurry or two over the high Sierra in Tuolumne County this system will not bring us any precip. It is what is bringing the mid to high level clouds across the southern half of the CWA. The upper level low will become an open wave this evening into the overnight and the associated cloud cover over our area will push east as short wave ridging builds in. Hi-res models want to develop a weak Delta Breeze this evening and we are seeing 240/13 knot winds at KSUU this afternoon. This weak Delta breeze will push some higher dewpoints into the southern Sac Valley and far northern San Joaquin Valley with a strong subsidence inversion around 900 mb. This moisture increase might be enough to see a few low clouds tomorrow morning but overall confidence in low on these developing. Any low clouds that do develop will mix out pretty quick by the mid morning. Quiet weather along with mostly clear skies are then expected for tomorrow as we sit under short wave ridging. Cloud cover has held temps down a bit in southern areas this afternoon but overall we should see similar highs today as to what we saw yesterday. Highs tomorrow will cool to near average in northern areas while southern areas will remain mild.

Similar conditions can be expected on Friday as the short wave ridge pushes to the east. Rain and snow chances will return to NorCal later Friday as a trough digs out of the Gulf of Alaska. Showers should develop over the coastal range late Friday afternoon and continue to overspread the region during the evening and overnight. The best rain and snow chances are expected overnight as the associated cold front pushes through the area. This system is able to pick up a bit of moisture pushing into the 250 kg/ms on the IVT chart but it will be a quick hitter. Rain totals are looking to be between a 0.10-0.75" in the Valley with the lowest totals over the San Joaquin and 0.25-1.0" in the Foothills. Snow levels start out between 5000 and 6000 feet and fall to 3500 to 4500 feet Saturday morning. Generally looking like 2-7" above 5000 feet with locally higher amounts over the Lassen Park area with some light accumulation possible down to around 3500 feet Saturday morning. The current snow totals are borderline Winter Weather Advisory but given it being a Friday night it may not hurt to issue one in the future and mountain travel will likely be impacted Friday night into Saturday morning.

Upper level ridging and quiet weather return to the area Saturday with just a few lingering showers over the Sierra into the afternoon. Additional snow accumulation in the afternoon is looking to be little to none.

-CJM

EXTENDED DISCUSSION (Sunday THROUGH Wednesday). We will be moving into an unsettled weather pattern for the extended period as long wave troughing sets up over the West Coast. This will bring a series of short wave troughs to NorCal with rain and snow chances for much of the first half of next week. The first short wave looks to drop to our south and impact more of SoCal on Monday but should be enough to bring some showers to the area. The second short wave is expected on Tuesday and will bring more widespread rain and snow chances to our area. Shower chances continue into Wednesday as we reaming on the western edge of the long wave trough. Overall ensemble members are in pretty good agreement through Tuesday and diverge a bit mid week on trough placement and progression.

-CJM

AVIATION. VFR next 24 hrs. Delta gusts up to 20 kts through 2 utc. Otherwise surface wind gusts generally under 12 kts.

STO WATCHES/WARNINGS/ADVISORIES. None.




Weather Reporting Stations
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Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Lincoln Regional Karl Harder Field, CA4 mi59 minSSE 810.00 miFair66°F36°F32%1006.8 hPa
Marysville, Beale Air Force Base, CA13 mi56 minSSE 1010.00 miA Few Clouds68°F36°F31%1006.4 hPa
Auburn Municipal Airport, CA14 mi59 minVar 410.00 miFair61°F34°F36%1007.8 hPa
Marysville, Yuba County Airport, CA15 mi61 minSSE 1110.00 miFair71°F34°F26%1006.6 hPa
Sacramento, McClellan Airfield Airport, CA21 mi59 minSSE 1210.00 miFair63°F39°F42%1007.1 hPa
Sacramento International Airport, CA23 mi61 minS 910.00 miOvercast66°F40°F39%1006.8 hPa

Link to 5 minute data for KLHM

Wind History from LHM (wind in knots)
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Last 24hrNE3CalmCalmCalmE5E5E4CalmNE5NE4CalmCalmCalmNW4N6CalmNW5CalmCalmNW5CalmSW6S6S9
1 day agoSW3CalmNE4N3NE4E7N3N4NE3CalmNE4N6CalmN3N3CalmN4N4NW4N4SW3CalmW4Calm
2 days agoW5CalmCalmCalmSE3E6E8E8E4E7E8E9E6E4E7E4NW3N3W3SW5W5S7S8SW3

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Wed -- 05:00 AM PST     0.23 feet Low Tide
Wed -- 06:34 AM PST     Sunrise
Wed -- 09:19 AM PST     Moonset
Wed -- 09:38 AM PST     3.05 feet High Tide
Wed -- 06:01 PM PST     Sunset
Wed -- 06:03 PM PST     0.19 feet Low Tide
Wed -- 10:37 PM PST     2.42 feet High Tide
Wed -- 11:26 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.11.61.10.60.30.20.51.32.32.932.92.521.40.90.50.30.20.41.11.92.32.4

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
Click for Map
Wed -- 03:30 AM PST     0.23 feet Low Tide
Wed -- 06:34 AM PST     Sunrise
Wed -- 08:29 AM PST     3.05 feet High Tide
Wed -- 09:19 AM PST     Moonset
Wed -- 04:33 PM PST     0.19 feet Low Tide
Wed -- 06:01 PM PST     Sunset
Wed -- 09:28 PM PST     2.42 feet High Tide
Wed -- 11:26 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.40.90.50.30.30.81.62.5332.82.41.81.30.80.40.20.20.61.322.42.42.2

Weather Map
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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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