Monday, April6, 2020
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Marine Weather and Tides
Geyserville, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 6:45AMSunset 7:41PM Monday April 6, 2020 7:35 AM PDT (14:35 UTC) Moonrise 5:16PMMoonset 5:21AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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- 338 Am Pdt Mon Apr 6 2020
.small craft advisory in effect from 3 pm pdt this afternoon through this evening...
Today..N winds 5 to 10 kt, becoming nw 10 to 20 kt this afternoon. Wind waves 1 ft, increasing to 2 to 3 ft this afternoon. W swell 4 to 6 ft at 9 seconds and S around 2 ft at 12 seconds. A slight chance of showers.
Tonight..N winds 10 to 20 kt with gusts up to 25 kt. Wind waves 1 to 2 ft. NW swell 4 to 6 ft at 10 seconds and S around 2 ft at 20 seconds. A slight chance of showers.
Tue..W winds up to 10 kt. Wind waves 1 ft. NW swell 4 to 6 ft at 9 seconds and S around 2 ft at 19 seconds.
Tue night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 to 3 ft. NW swell 5 to 7 ft at 9 seconds and S 2 to 3 ft at 18 seconds.
Wed..NW winds 15 to 25 kt with gusts up to 30 kt. Wind waves 5 to 6 ft. W swell around 7 ft at 9 seconds and S 2 to 3 ft at 18 seconds.
Wed night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 2 to 3 ft. W swell around 7 ft at 9 seconds and S 2 to 3 ft at 16 seconds.
Thu..NW winds up to 10 kt. Wind waves 1 ft. W swell around 6 ft and S 2 to 3 ft.
Fri..NW winds 5 to 15 kt. Wind waves 1 to 2 ft. NW swell 5 to 7 ft and S 2 to 3 ft.
PZZ500 338 Am Pdt Mon Apr 6 2020
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... A cold mid to upper level low will slowly move south over coastal waters today and tonight with scattered showers and Thunderstorms. Dry weather returns to the coastal waters and bays Tuesday. A long period southwest to west swell arrives early Tuesday morning and continues into Wednesday morning before decreasing.


7 Day Forecast for Marine Location Near Geyserville, CA
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location: 38.71, -123     debug


Area Discussion for - Sacramento, CA
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FXUS66 KSTO 061015 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 315 AM PDT Mon Apr 6 2020

Synopsis. Cool and unsettled weather continues today with scattered showers and a few thunderstorms. Dry and milder weather returns Tuesday and continues through the remainder of the week.

Discussion. Satellite imagery shows the deep closed low off the coast of NorCal early this morning with a couple of strong vorts rotating in its midst - one to the southwest of the Bay Area and a second to the west of Cape Mendocino. Skies have cleared out across portions of the Sacramento Valley while radar indicates tapering snow over the northern Sierra Nevada along some showers over the northern Sacramento Valley and northern San Joaquin Valley.

The deep low will move slowly southward off the coast today. Lingering precipitation is expected to continue to taper off early this morning, but scattered showers and thunderstorms will redevelop by late morning and through the afternoon as instability builds with daytime heating. The main area of activity is expected over the southern half of the forecast area as the strong vort southwest of the Bay Area pivots onshore. Main threat today from stronger storms will likely be copious amounts of small hail as forecast soundings indicate deep, but skinny CAPE and weak shear.

Some lingering wrap-around showers will be possible across the NorCal mountains on Tuesday and Wednesday as the low moves into SoCal. The remainder of the forecast area will see a return of dry weather, and temperatures will return to above average by Wednesday.

EXTENDED DISCUSSION (Friday THROUGH Monday). The slow moving upper low from earlier in the week will continue to be stubborn in exiting the state. By Friday morning, some of the guidance keeps the circulation over the southern California deserts. However, any impacts will be long gone as heights continue to be build in the wake. The strengthening ridge should easily bolster temperatures well into the 70s over the Valley with even some lows 80s squezing into the northern Sacramento Valley. Overall, expect daily highs to run around 5 to 10 degrees above average accompanied by mostly sunny skies and relatively light winds. ~BRO

AVIATION. Mainly VFR conditions with local areas of MVFR within any developing showers. Isolated thunderstorms will be possible with snow levels over the Sierra down to 3,500 to 4,000 feet. Diminishing winds today, generally under 10 knots, locally higher within heavier showers. ~BRO

STO WATCHES/WARNINGS/ADVISORIES. Winter Storm Warning until 11 AM PDT this morning for Motherlode- Northeast Foothills/Sacramento Valley-West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.




Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 35 mi26 min E 5.8 G 7.8 51°F1009.8 hPa
ANVC1 - 9416841 - Arena Cove, CA 40 mi48 min E 7 G 8 40°F 50°F1009.3 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Santa Rosa, Santa Rosa Sonoma County Airport, CA17 mi43 minNW 410.00 miPartly Cloudy34°F33°F97%1009 hPa

Link to 5 minute data for KSTS

Wind History from STS (wind in knots)
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1 day agoCalm3E3CalmCalmCalmS6
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2 days agoCalmS33N9NE55N6NW5S7S7N8NW10W5CalmNW5CalmSE4CalmSE3S3CalmCalmCalmCalm

Tide / Current Tables for Fort Ross, California
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Fort Ross
Click for Map
Mon -- 04:12 AM PDT     0.95 feet Low Tide
Mon -- 06:21 AM PDT     Moonset
Mon -- 06:49 AM PDT     Sunrise
Mon -- 10:07 AM PDT     5.61 feet High Tide
Mon -- 04:32 PM PDT     -0.22 feet Low Tide
Mon -- 06:16 PM PDT     Moonrise
Mon -- 07:41 PM PDT     Sunset
Mon -- 10:55 PM PDT     5.60 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.53.42.31.411.21.93.14.25.25.65.44.53.21.70.5-0.1-0.10.51.734.35.35.6

Tide / Current Tables for Salt Point, California Current
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Salt Point
Click for Map
Mon -- 02:09 AM PDT     -1.20 knots Max Ebb
Mon -- 05:35 AM PDT     0.00 knots Slack
Mon -- 06:21 AM PDT     Moonset
Mon -- 06:49 AM PDT     Sunrise
Mon -- 08:29 AM PDT     1.18 knots Max Flood
Mon -- 11:29 AM PDT     -0.00 knots Slack
Mon -- 02:26 PM PDT     -1.48 knots Max Ebb
Mon -- 06:02 PM PDT     0.00 knots Slack
Mon -- 06:17 PM PDT     Moonrise
Mon -- 07:42 PM PDT     Sunset
Mon -- 08:59 PM PDT     1.31 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.4-1-1.2-1.1-0.8-0.30.20.81.11.10.90.3-0.4-1.1-1.4-1.4-1.1-0.6-00.61.11.31.10.7

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 (10,2,3,4)
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Ground Weather Radar Station Sacramento, CA
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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 numerous 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.