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Marine Weather and Tides Stonyford, 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 7:13AM

Sunset 4:49PM

Friday December 6, 2019 5:11 PM PST (01:11 UTC)

Moonrise 2:05PM

Moonset 1:37AM

Illumination 76%

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 Stonyford, CA

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Area Discussion for - Sacramento, CA

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FXUS66 KSTO 062230 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 230 PM PST Fri Dec 6 2019

SYNOPSIS. A strong winter storm will bring periods of heavy rain, mountain snow, strong winds and hazardous travel Friday and into the weekend. Dry conditions return next week with near average temperatures.

DISCUSSION. A deep closed low progressing towards northern California will bring periods of rain, snow, and strong winds to the area. Early this afternoon, rain has already moved into the northern and coastal mountain and foothill areas of Shasta and Tehama Counties and will continue to progress southeast ward through the evening. Hi-res guidance suggests precipitation spreading into the Sacramento area between 5-7 pm, reaching the majority of the Sierra Nevada shortly after.

HREF probabilities suggest the potential for over a half inch of rain an hour for portions of the foothill and Valley regions as this initial band of precipitation moves in , including some of the 2018 burn scars tonight (mainly the Carr/Hirz/Delta and Mendocino Complex burn areas). Rain continues through the overnight hours with model (ARW/NAM) continuing to indicate the potential for a band of intense rainfall setting up across Lake Co to Chico to Susanville early tomorrow morning, and continuing to move southeast before moving south of the area. Scattered showers continue across the Valley and foothill regions Saturday, along with the potential for some thunderstorms mainly during the late morning and afternoon hours. The mid-level cyclone will be spreading inland across northern California Saturday bringing mid level cooling and unstable conditions leading to scattered thunderstorm across the Valley into the foothills with additional concerns for heavy rain over the burn scars (including the Camp burn area). A Flash Flood Watch has been issued for all three burn scars mentioned from this evening through tomorrow evening due to the potential for heavy rain and thunderstorms. Total precipitation amounts in the Valley for this system range anywhere from a half inch in the southern Sacramento Valley, up to two and a half towards the north.

Heavy mountain snow will begin tonight in the Sierra Nevada, mainly at elevations above 6500 feet. Significant travel impacts are expected to begin this evening, continuing most of the weekend as snow continues to fall. Gusty winds may create near white out conditions at times in combination with heavy snowfall rates. Snow levels do drop slightly by early Sunday morning as the low moves over NorCal, with snow down to about 5500 feet. Feet of snow are still expected by the end of this system. The Winter Storm Warning begins this evening and extends through the early afternoon Sunday.

In addition to the precipitation, tightening pressure gradients will lead to southerly gusty winds across a majority of the Sacramento Valley as this system moves onshore. Sustained winds around 20 to 30 mph will be seen overnight and into early tomorrow afternoon, with gusts ranging from 30 to 50 mph. The strongest winds look to be in the northern Sacramento Valley. A Wind Advisory has been issued for this time when the strongest winds are expected. Winds will remain breezy through early Sunday, before becoming light again Sunday night.

Some lingering showers will be possible Sunday afternoon, with conditions expected to clear later Sunday night as the mid level wave pushes out of NorCal. Ridging returns Monday with average temperatures and dry weather expected.

EXTENDED DISCUSSION (Tuesday THROUGH Friday).

Dry weather continues for interior NorCal Tuesday as upper level ridging remains in place. Ensemble guidance continues to bring a weak trough through California Wednesday. Both GFS and Euro ensemble and deterministic guidance still suggesting a slight chance of light showers over the Coastal mountains and southern Cascades late Tuesday into Wednesday, though afternoon NBM significantly backed off on precip chances. Therefore, blended slightly down so chances are now mainly overnight Tuesday. Zonal flow takes over Thursday into the weekend after the trough moves through. Guidance shows slight chance of precip over northern Shasta county Thursday and Friday as weak impulses move along the flow. HEC

AVIATION.

Widespread precipitation next 24 hours with MVFR conditions, locally IFR/LIFR in heavier showers. Southerly wind gusts up to 30-45 kts are expected in the Valley decreasing after 00z-03z Sunday; gusts up to 40-55 kts mountains. Snow levels 6500 feet tonight, then 5500-6000 feet Sunday.

STO WATCHES/WARNINGS/ADVISORIES. Winter Storm Warning until 1 PM PST Sunday for West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.

Flash Flood Watch from 7 PM PST this evening through Saturday afternoon for Central Sacramento Valley-Clear Lake/Southern Lake County-Mountains Southwestern Shasta County to Northern Lake County-Northeast Foothills/Sacramento Valley-Northern Sacramento Valley-Shasta Lake Area / Northern Shasta County-Western Plumas County/Lassen Park.

Wind Advisory from 10 PM this evening to 1 PM PST Saturday for Carquinez Strait and Delta-Central Sacramento Valley-Mountains Southwestern Shasta County to Northern Lake County-Northeast Foothills/Sacramento Valley-Northern Sacramento Valley-Northern San Joaquin Valley-Southern Sacramento Valley.

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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	62 mi	65 min	ESE 19 G 33	57°F	54°F		1009.1 hPa
46014 - PT ARENA - 19NM North of Point Arena, CA	68 mi	41 min	SE 35 G 49	57°F	55°F		1007 hPa	56°F

Wind History for Arena Cove, CA

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

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E10 G16

E13 G21

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E14 G18

E12 G18

E13 G22

E15 G21

E15 G25

E14 G24

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E17 G27

E21 G29

E20 G29

E18 G22

E23 G33

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1 day ago

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Ukiah Municipal Airport, CA	30 mi	75 min	S 9 G 17	2.50 mi	Heavy Rain Fog/Mist	54°F	51°F	90%	1010.9 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)

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E5

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SE10 G16

S13 G20

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S10 G15

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SE14 G20

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1 day ago

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Tide / Current Tables for Albion, California

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Tide / Current Tables for Mendocino, Mendocino Bay, California

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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 (20,4,5,8)

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Ground Weather Radar Station Beal AFB, CA

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