Thursday, July29, 2021
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Marine Weather and Tides
Nevada City, 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 6:02AMSunset 8:20PM Thursday July 29, 2021 7:10 AM PDT (14:10 UTC) Moonrise 10:45PMMoonset 10:52AM 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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7 Day Forecast for Marine Location Near Nevada City, CA
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location: 39.25, -121     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 290906 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 206 AM PDT Thu Jul 29 2021

SYNOPSIS. Late day mountain thunderstorm chances expected through the week. Above normal temperatures are expected through Friday with a slight cooling trend for the weekend and early next week.

DISCUSSION. GOES-West infrared imagery reveals some mid/high clouds propagating over central and northern interior California this early Thursday morning. Infrared imagery also shows the Dixie Fire continuing to burn hot in some areas of Butte and Plumas Counties. After a hot day yesterday, most communities are running at least several degrees warmer compared to 24 hours ago -- if not more. As of 1 AM PDT, Chico and Oroville are both at 16 degrees above compared to this time yesterday night. Onshore San Francisco to Sacramento gradient is a tad stronger resulting in wind gusts around 25 to 30 kt at Travis Air Force Base. By sunrise, temperatures will bottom out in the 60s to low 70s in the Valley with the adjacent thermal belts in the 70s.

An expansive upper level ridge centered over the Great Plains will continue to promote south/southeasterly flow aloft over the Southwestern United States. Surface temperatures again this afternoon will be around 5 to 8 deg F above late July normals with most Valley locations forecast to reach the triple digits. Exception to this would be around the Delta in Solano County. Another potential twist that will have to be closely monitored would be wildfire smoke and its influence on temperatures. Corresponding heat risk for this afternoon generally lands in the moderate (orange) risk with a few isolated pockets of high (red) risk.

Reoccurring opportunities for afternoon/evening showers/ thunderstorms will continue over the next several afternoons as the south/southwest flow draws moisture into portions of central and northern California. For this afternoon, slight chance of showers and thunderstorms extend along and east of the Sierra crest with the best chance generally along/south of Interstate 80. Better chances develop on Friday with 15 to 30 percent chance of showers/thunderstorms expanding through the mountains of Shasta County. Storms may be accompanied by gusty/erratic winds, brief downpours, and lightning.

Temperatures are forecast to moderate over the weekend as an upper level trough develops along the 140th meridian. Most pronounced cooling will occur in/around the Delta where temperatures will fall back by 10 or more deg F. Sacramento Metro Area will likely fall to the 90s for both Saturday and Sunday. // Rowe

EXTENDED DISCUSSION (Monday THROUGH Thursday). Cluster analysis in the extended favors troughing along the West Coast with weak ridging over the Rockies. The resulting onshore flow for northern California will keep temperatures in-check early next week with highs generally landing within several degrees of early August normals.

AVIATION.

VFR conditions at TAF sites. Local MVFR/IFR conditions in wildfire smoke, mainly over Plumas and Butte counties. Surface wind gusts under 12 kts continue except local southwest gusts 20-30 kts vicinity west Delta. Isolated showers and thunderstorms possible over the mountains after 18Z Thursday.

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 91 mi85 min W 8.9 61°F 1013 hPa56°F
PCOC1 - 9415144 - Port Chicago, CA 99 mi52 min W 21 G 24 60°F 69°F1013.2 hPa

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Nevada County Air Park, CA2 mi20 minN 010.00 miPartly Cloudy79°F46°F32%1017.9 hPa
Emigrant Gap, Blue Canyon Nyack Airport, CA16 mi18 minN 04.00 miFair with Haze74°F40°F29%1011.8 hPa
Auburn Municipal Airport, CA21 mi15 minE 35.00 miFair with Haze79°F48°F34%1014.6 hPa

Link to 5 minute data for KGOO

Wind History from GOO (wind in knots)
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1 day agoCalmCalmCalmCalmCalmCalmCalmCalmNW35CalmW8CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmCalmCalmCalmCalmSW65Calm45CalmSE7SE6SE4CalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Thu -- 12:03 AM PDT     2.73 feet High Tide
Thu -- 06:05 AM PDT     Sunrise
Thu -- 07:27 AM PDT     0.60 feet Low Tide
Thu -- 11:26 AM PDT     2.40 feet High Tide
Thu -- 11:54 AM PDT     Moonset
Thu -- 07:24 PM PDT     0.15 feet Low Tide
Thu -- 08:18 PM PDT     Sunset
Thu -- 11:47 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.72.62.31.91.51.10.80.60.71.21.92.42.42.21.91.410.60.30.20.20.71.52.2

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
Click for Map
Thu -- 05:57 AM PDT     0.60 feet Low Tide
Thu -- 06:05 AM PDT     Sunrise
Thu -- 10:17 AM PDT     2.40 feet High Tide
Thu -- 11:54 AM PDT     Moonset
Thu -- 05:54 PM PDT     0.15 feet Low Tide
Thu -- 08:18 PM PDT     Sunset
Thu -- 11:33 PM PDT     2.73 feet High Tide
Thu -- 11:47 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.62.21.81.310.70.60.91.52.12.42.42.11.81.30.80.50.20.20.411.72.32.7

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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