Thursday, September16, 2021
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Marine Weather and Tides
Linda, 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 6:47AMSunset 7:14PM Thursday September 16, 2021 11:27 AM PDT (18:27 UTC) Moonrise 4:18PMMoonset 12:51AM Illumination 77% Phase: Waxing Gibbous; Moon at 10 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- 817 Am Pdt Thu Sep 16 2021
Today..SW winds 5 to 10 kt, increasing to 10 to 15 kt with gusts up to 25 kt this afternoon.
Tonight..SW winds 10 to 15 kt with gusts up to 25 kt.
Fri..SW winds 15 to 20 kt with gusts up to 25 kt.
Fri night..SW winds 10 to 15 kt with gusts up to 25 kt.
Sat..SW winds 10 to 15 kt.
Sat night..SW winds 5 to 10 kt. A chance of showers.
Sun..W winds 5 to 10 kt. A chance of showers.
Mon..NW winds 10 to 15 kt.
PZZ500 817 Am Pdt Thu Sep 16 2021
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light winds near the coast and breezier northwest winds across the outer waters, with strongest winds in the northern outer waters. Winds will increase across the northern and outer waters today, creating hazardous conditions for smaller vessels. Chances for showers increase over the weekend as a cold front approaches northern california. Wind driven seas prevail with a weak, long period southerly swell through the forecast period.


7 Day Forecast for Marine Location Near Linda, CA
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location: 39.18, -121.46     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 161025 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 325 AM PDT Thu Sep 16 2021

SYNOPSIS. Chances of moisture (not a bunch) increasing with best chances on Sunday. Cooling definitely on track with coolest day Sunday. Some gusty winds possible early next with temperatures slowly rising.

DISCUSSION. Clear skies cover the region. Extensive stratus covers the Bay Area and profiler data indicates the marine layer has deepened to 2-2.5k ft. IR difference imagery shows stratus moving into the valley south of Travis, and narrowing temp/dew point spreads indicate potential for early morning stratus making it inland into the Sacramento region. Surface pressure gradients continue to mostly trend toward increased onshore flow, and most locales are seeing cooler temperatures compared to 24 hours ago.

The cooling trend will continue today as a weak trough lingers over NorCal in the wake of the stronger system that moved through the PacNW yesterday. Highs today will be down several degrees compared to Wednesday, and increased onshore flow will bring higher humidity further inland across the Central Valley and foothill elevations.

Temperatures will hold steady, or increase a few degrees, on Friday as short-wave ridging moves in ahead of the deeper weekend trough.

Cooler weather is forecast to really take hold beginning Saturday as deeper southwest flow spreads across the region with the approaching trough. Highs will cool to around 5-10 degrees below average as onshore flow picks up. Gusty southwest winds are likely for much of the region, and particularly for areas along and east of the Sierra/Cascade crest. Humidity will be increasing in that area, so fire weather concerns will be mitigated somewhat.

GEFS has slowed onset of precipitation to mainly late Saturday night and Sunday (now more in agreement with the EC ensemble). Mountain areas, especially north of I-80, may see QPF in excess of half an inch. Most of the valley will likely only see a few hundredths of an inch up to potentially around a quarter inch up by Redding. Hopefully consistency will continue to improve as the system get closer.

EXTENDED DISCUSSION (Monday THROUGH Thursday). The upper level trough that will bring us shower chances on Sunday will be pushing to the east into the Great Basin for the start of the extended period. This will bring an increased pressure gradient over NorCal as the upper level ridge builds in from the west. This will bring the potential for fire weather concerns on Monday as north and east winds pick up. Currently looks like gusts to 25-35 mph mainly over the northern Sac Valley and over the Sierra Monday morning. The main uncertainty with Monday is how dry humidity will get given the expected rainfall on Sunday. Short wave ridging builds in Tuesday with lighter winds and warmer temperatures.

Models then dig a trough out of the Gulf of Alaska Wednesday into NorCal. There is a lot of uncertainty with this trough and ensembles do not have a good idea of timing and placement with it. Unlike the trough on Sunday there won't be much moisture with it and the impacts will be minimal. Upper level ridging and warming temperatures build in behind the trough. -CJM

AVIATION. Local areas of MVFR/IFR will be possible between 12 and 16z this morning into the southern Sacramento Valley due to FEW to BKN clouds at 008 to 015 as the marine layer pushes into the Valley. VFR conditions for all terminals by 17z. Local areas of MVFR near any wildfires due to smoke. Winds under 10 knots except through the Delta where gusts to 35 knots will be possible this morning.

STO WATCHES/WARNINGS/ADVISORIES. None.




Weather Reporting Stations
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On 03/09/2021 the NDBC primary processing servers were shut off due to a facilities issue. Station pages on the NDBC website are not updating and there is no ETR at this time. We will update this banner as we learn more.
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 74 mi102 min WNW 12 61°F 1012 hPa55°F
PCOC1 - 9415144 - Port Chicago, CA 84 mi57 min W 15 G 17 60°F 69°F1011.2 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Marysville, Beale Air Force Base, CA3 mi29 minS 610.00 miFair72°F53°F51%1010 hPa
Marysville, Yuba County Airport, CA8 mi34 minVar 310.00 miFair70°F53°F55%1010.7 hPa
Lincoln Regional Karl Harder Field, CA20 mi32 minS 410.00 miFair70°F52°F53%1010.2 hPa
Oroville Municipal Airport, CA23 mi34 minN 010.00 miFair72°F51°F48%1010.7 hPa
Nevada County Air Park, CA24 mi32 minVar 410.00 miFair82°F34°F17%1013.2 hPa

Link to 5 minute data for KBAB

Wind History from BAB (wind in knots)
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Last 24hrS3S5S10S8SE8SE11SE11S7S5S8SE6SE9SE11SE12SE10SE10S4SE3SE5CalmCalmSE5SE5S6
1 day agoS6S6SE5S7S6S6S7SE4E6E9E9E9E5S3SE6E5S4CalmCalmCalmSE3S3S3Calm
2 days agoS3CalmW3W4NW3W4S3CalmSE3NE4CalmCalmNE3CalmNE3CalmW6CalmCalmCalmE3SE3S3S3

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Thu -- 01:52 AM PDT     Moonset
Thu -- 03:02 AM PDT     2.96 feet High Tide
Thu -- 06:48 AM PDT     Sunrise
Thu -- 12:27 PM PDT     -0.06 feet Low Tide
Thu -- 05:15 PM PDT     2.45 feet High Tide
Thu -- 05:16 PM PDT     Moonrise
Thu -- 07:12 PM PDT     Sunset
Thu -- 11:49 PM PDT     0.79 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.42.12.732.92.72.31.81.40.90.50.2-000.51.322.42.42.11.81.41.10.9

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
Click for Map
Thu -- 01:53 AM PDT     2.96 feet High Tide
Thu -- 01:53 AM PDT     Moonset
Thu -- 06:48 AM PDT     Sunrise
Thu -- 10:57 AM PDT     -0.06 feet Low Tide
Thu -- 04:06 PM PDT     2.45 feet High Tide
Thu -- 05:16 PM PDT     Moonrise
Thu -- 07:12 PM PDT     Sunset
Thu -- 10:19 PM PDT     0.79 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.32.832.92.62.21.71.20.80.40-0.10.20.81.52.22.42.321.61.310.80.9

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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