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Marine Weather and Tides Geyserville, CA Version 3.4

NOTICE 10/9/2019 Updated the Marine Zones. 9/4/2019 Fixed the weather maps due to NOAA moving them. 7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

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Sunrise 7:17AM

Sunset 4:51PM

Wednesday December 11, 2019 1:58 PM PST (21:58 UTC)

Moonrise 4:45PM

Moonset 6:41AM

Illumination 100%

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.

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7 Day Forecast for Marine Location Near Geyserville, CA

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Area Discussion for - Sacramento, CA

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FXUS66 KSTO 111137 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 337 AM PST Wed Dec 11 2019

SYNOPSIS. Light showers possible on Wednesday and Thursday. Widespread precipitation expected later in the week and into the weekend. Drier weather Sunday and early next week.

DISCUSSION. A weak weather system moved through NorCal last night spreading precipitation across the area. The upper level trough has moved east into Nevada with only lingering showers remaining early this morning. Areas of light fog have developed behind the frontal passage. Fog could become denser in areas this morning, though it will be dependent on high cloud cover.

Upper level flow expected to become more zonal over NorCal today. A shortwave along a deep trough centered around the Gulf of Alaska pushes into the West Coast today, bringing an increased chance of light precipitation to areas generally north of I-80 this afternoon. Increased precipitation is expected across most of the area overnight Wednesday into Thursday, tapering off significantly south of the Sacramento area. Heaviest precip amounts forecast in northern Shasta County and mountains north of I-80 with amounts up to 0.75 to 1 inch possible. Lighter amounts expected in the rest of the Valley with only a few hundredths south of Sacramento up to around a quarter of an inch in the northern Sacramento Valley. Snow levels will mainly be above 7000 to 8000 feet with minimal accumulation expected.

Ensembles continue to suggest precipitation chances continue Friday through Saturday as impulses move along the zonal flow. The majority of precipitation will remain in the foothills and mountains with precipitation amounts of half an inch to an inch and a quarter forecast. The Valley could see anywhere from a few hundredths of an inch to a quarter of an inch. Snow levels will begin to drop Friday to around 6000 to 7000 feet before dropping below pass level overnight Friday with light accumulation down to 4000 to 4500 feet possible. Snow accumulation around 5 to 10 inches is possible over the Sierra which could cause hazardous travel conditions over the Sierra passes. HEC

EXTENDED DISCUSSION (Sunday THROUGH Wednesday). To conclude the weekend, broad troughing will have shifted into the Four Corners which allows for heights to build over the region from Sunday into early next week. This supports a period of dry weather accompanied by mostly sunny skies and near average temperatures. From Tuesday onward, there is a greater amount of uncertainty in the offshore (upstream) pattern. Progressive flow will carry a longwave trough across the central Pacific this weekend with its fate dictating impacts over northern California. While 06Z GEFS/00Z ECMWF ensemble means show a trough entering the picture next Tuesday/Wednesday (December 17/18), deterministic guidance show the potential for a closed low to separate itself from the prevailing westerlies. Such solutions are wildly variable so confidence is low in the eventual outcome. However, did raise the chances for precipitation in the forecast due to the presence of the trough. ~BRO

AVIATION. Widespread MVFR/IFR conditions at TAF sites through 20z. -SHRA possible across Central Valley through 16z. Precipitation returns this afternoon with -RA possible after 23z. Light winds generally less than 10 kts expected.

STO WATCHES/WARNINGS/ADVISORIES. None.

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Weather Reporting Stations

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Stations	Dist	Age	Wind	Air Temp	Water Temp	Waves	Pressure	DewPt
ANVC1 - 9416841 - Arena Cove, CA	40 mi	59 min	ESE 12 G 16	58°F	54°F		1020.9 hPa (-1.6)
PRYC1 - 9415020 - Point Reyes, CA	49 mi	59 min			54°F		1021.6 hPa (-1.5)

Wind History for Arena Cove, CA

(wind in knots)    EDIT      (on/off)   Help

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Santa Rosa, Santa Rosa Sonoma County Airport, CA	17 mi	66 min	N 0	1.50 mi	Light Rain Fog/Mist	54°F	54°F	100%	1021.9 hPa

Link to 5 minute data for KSTS

Wind History from STS (wind in knots)

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Tide / Current Tables for Fort Ross, California

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Tide / Current Tables for Salt Point, California Current

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Weather Map

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GEOS Local Image of CentralWestCoast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

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Wind Forecast for Sacramento, CA (16,3,4,5)

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Ground Weather Radar Station Sacramento, CA

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