Wednesday, August4, 2021
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Marine Weather and Tides
Oroville, 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 6:07AMSunset 8:16PM Wednesday August 4, 2021 11:25 AM PDT (18:25 UTC) Moonrise 1:19AMMoonset 4:50PM Illumination 13% Phase: Waning Crescent; Moon at 26 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 Oroville, CA
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location: 39.5, -121.57     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 041055 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 355 AM PDT Wed Aug 4 2021

SYNOPSIS. Periods of critical fire weather conditions Wednesday afternoon through early Thursday evening. Mainly dry weather and near normal temperatures expected through the week. Breezy onshore winds at times through the weekend.

DISCUSSION. NorCal remains between high pressure centered over the Desert Southwest and trough approaching from the eastern Pacific. This continues a southwest flow pattern over the area. Onshore flow will begin to influence the Southern Sacramento and Northern San Joaquin Valleys today with temperatures falling back to near normal levels from the upper 80's to mid 90's. Readings will remain slightly above normal over the cent/nrn Sacramento Valley from the upper 90's to low 100's. Temperatures will drop to slightly below normal levels Thursday with trough passing through and onshore strengthening, then warming back to normal and slightly above levels Friday and Saturday.

Surface and ridgetop south to southwest winds will strengthen Wednesday afternoon into Thursday as gradient tightens with approaching trough, with local gusts up to 25 to 35 mph causing fire weather concerns.

The combination of very low humidity, gusty winds and extremely dry fuels will bring periods of critical fire weather conditions to the northern Sacramento Valley Wednesday afternoon into early Wednesday evening and for the mountains of Shasta and western Plumas counties, and the northeast foothills through early Thursday evening. A Red Flag Warning is in effect for these areas. Please practice fire safety.

Increased instability with a brief period of cooling aloft and steepening lapse rates near upper low passing through Shasta and Siskiyou counties may lead to a few isolated thunderstorms Thursday afternoon over northern and western Shasta county. Dry weather with lighter winds Friday and Saturday, as upper low quickly moves northeast into the Northern Plains.

EXTENDED DISCUSSION (Sunday THROUGH Wednesday).

Models differ through the extended forecast period with EC showing a slower and deeper low over the PacNW early next week. Ensembles support weaker troughing aloft similar to the oper GFS. Forecast remains dry attm with high temperatures near to slightly below normal.

AVIATION.

VFR conds ovr intr NorCal nxt 24 hrs exc lcl MVFR conds poss in FU vcnty of fires in SW Shasta and W Plumas cntys. SWly sust sfc wnd to 25 kts vcnty of Delta with lcl gsts to 35 kts nxt 24 hrs. Lcl Sly sfc wnd to 15 kts in Sac Vly with gsts up to 25 kts btwn 21z-06z.

STO WATCHES/WARNINGS/ADVISORIES. Red Flag Warning from 1 PM this afternoon to 8 PM PDT Thursday for Burney Basin and Northeast Plateau in Shasta County Including Northwest Lassen NF north of Lassen NP-Eastern Portion of Shasta/Trinity NF-Northern Sacramento Valley to Southern Tehama County Line Below 1000 Ft-Northern Sierra Foothills from 1000 to 3000 Ft. Includes portions of Shasta-Trinity and Butte Units-Northern Sierra Including Lassen NP and Plumas and Lassen NF/S West of the Sierra Crest (West of Evans Peak-Grizzly Peak- Beckworth Peak).




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 93 mi101 min WNW 15 63°F 1014 hPa55°F

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Oroville Municipal Airport, CA3 mi33 minSW 410.00 miA Few Clouds84°F47°F27%1013.4 hPa

Link to 5 minute data for KOVE

Wind History from OVE (wind in knots)
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Last 24hrW43Calm4CalmW4S5S6S3CalmE4E7E4E6NE3CalmSW3E5CalmCalmSE3SE4S4SW4
1 day agoSE74334S63S5S4CalmCalmCalmCalmCalmCalmCalmSE3SE4CalmE3SE4SE3CalmW3
2 days ago3SW46CalmCalmSW4W3S6S7SE9SE11S10S8S7SE10SE8SE8SE7SE4SE6SE73S4S8

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
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Wed -- 02:21 AM PDT     Moonrise
Wed -- 04:03 AM PDT     3.03 feet High Tide
Wed -- 06:10 AM PDT     Sunrise
Wed -- 01:40 PM PDT     0.04 feet Low Tide
Wed -- 05:47 PM PDT     Moonset
Wed -- 06:27 PM PDT     2.29 feet High Tide
Wed -- 08:13 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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11.52.22.8332.82.421.51.10.70.30.10.10.51.11.82.22.321.71.41.2

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
Click for Map
Wed -- 02:22 AM PDT     Moonrise
Wed -- 02:54 AM PDT     3.03 feet High Tide
Wed -- 06:11 AM PDT     Sunrise
Wed -- 12:10 PM PDT     0.04 feet Low Tide
Wed -- 05:18 PM PDT     2.29 feet High Tide
Wed -- 05:46 PM PDT     Moonset
Wed -- 08:12 PM PDT     Sunset
Wed -- 10:51 PM PDT     1.04 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.82.42.932.92.72.31.81.30.90.50.200.20.71.31.92.32.221.61.31.11

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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