Friday, December6, 2019
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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

Sunrise 7:13AMSunset 4:49PM Friday December 6, 2019 5:11 PM PST (01:11 UTC) Moonrise 2:05PMMoonset 1:37AM Illumination 76% 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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PZZ540 Coastal Waters From Point Arena To Point Reyes California Out To 10 Nm- 134 Pm Pst Fri Dec 6 2019
.gale warning in effect through late tonight...
Rest of today..SE winds 25 to 35 kt with gusts up to 45 kt. Wind waves 10 to 12 ft. W swell 5 to 7 ft at 17 seconds. Showers.
Tonight..S winds 20 to 30 kt with gusts up to 40 kt. Wind waves 10 to 12 ft. W swell 6 to 8 ft at 17 seconds. Showers and a slight chance of Thunderstorms.
Sat..S winds 20 to 30 kt with gusts up to 45 kt. Wind waves 8 to 9 ft. W swell 8 to 10 ft at 14 seconds. Showers and a slight chance of Thunderstorms.
Sat night..SW winds 10 to 15 kt. Wind waves 4 to 5 ft. W swell 8 to 10 ft at 12 seconds. Rain likely.
Sun..NW winds 5 to 10 kt. Wind waves 3 to 4 ft. W swell 6 to 8 ft at 11 seconds. A chance of rain.
Sun night..N winds 5 to 15 kt. Wind waves 2 to 3 ft. W swell 4 to 6 ft at 10 seconds.
Mon..NW winds 5 to 15 kt. Wind waves 1 ft. NW swell 4 to 5 ft and S around 2 ft.
Tue..E winds around 5 kt. Wind waves 1 ft. W swell 4 to 6 ft and S around 2 ft. Winds and wind waves higher in and near Thunderstorms.
PZZ500 134 Pm Pst Fri Dec 6 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A pair of frontal boundaries will move through the waters from north to south over the next 24 to 36 hours, bringing unsettled weather today and into the weekend. Gusty southerly gale force winds will develop ahead of these boundaries as they move southward through the waters and generate large wind waves and hazardous seas. Moderate west swell will gradually build to around 10 to 12 feet tonight and continue through Saturday night. Showers and isolated Thunderstorms will be possible this evening through Saturday.


7 Day Forecast for Marine Location Near Stonyford, CA
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location: 39.34, -122.69     debug


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.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ANVC1 - 9416841 - Arena Cove, CA 62 mi65 min ESE 19 G 33 57°F 54°F1009.1 hPa
46014 - PT ARENA - 19NM North of Point Arena, CA 68 mi41 min SE 35 G 49 57°F 55°F1007 hPa56°F

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA30 mi75 minS 9 G 172.50 miHeavy Rain Fog/Mist54°F51°F90%1010.9 hPa

Link to 5 minute data for KUKI

Wind History from UKI (wind in knots)
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1 day agoCalmCalmW3CalmW3CalmCalmCalmN3N3CalmSE3CalmN3CalmS3S3SE4SE7SE6SE9SE5E8
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2 days agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW5N3N4CalmCalmCalmSE4CalmCalmCalmSW3CalmSW3

Tide / Current Tables for Albion, California
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Albion
Click for Map
Fri -- 12:15 AM PST     1.31 feet Low Tide
Fri -- 01:42 AM PST     Moonset
Fri -- 07:03 AM PST     5.29 feet High Tide
Fri -- 07:20 AM PST     Sunrise
Fri -- 01:41 PM PST     1.56 feet Low Tide
Fri -- 02:09 PM PST     Moonrise
Fri -- 04:51 PM PST     Sunset
Fri -- 07:22 PM PST     3.90 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.41.92.73.64.455.35.14.53.72.82.11.61.61.92.433.63.93.83.52.92.3

Tide / Current Tables for Mendocino, Mendocino Bay, California
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Mendocino
Click for Map
Fri -- 12:13 AM PST     1.31 feet Low Tide
Fri -- 01:42 AM PST     Moonset
Fri -- 06:56 AM PST     5.29 feet High Tide
Fri -- 07:20 AM PST     Sunrise
Fri -- 01:39 PM PST     1.56 feet Low Tide
Fri -- 02:09 PM PST     Moonrise
Fri -- 04:51 PM PST     Sunset
Fri -- 07:15 PM PST     3.90 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.31.422.83.74.55.15.35.14.53.62.82.11.61.61.92.53.13.63.93.83.42.92.2

Weather Map
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wmap_P
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
Wind Forecast for Sacramento, CA (20,4,5,8)
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Ground Weather Radar Station Beal AFB, CA
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weather_mapweather_map weather_map

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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.