Tuesday, March19, 2019 L-36.com


Marine Weather and Tides
Geyserville, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:14AMSunset 7:23PM Tuesday March 19, 2019 4:15 PM PDT (23:15 UTC) Moonrise 5:02PMMoonset 5:46AM Illumination 99% Phase: Waxing Gibbous; Moon at 14 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- 208 Pm Pdt Tue Mar 19 2019
.small craft advisory in effect from late tonight through Wednesday afternoon...
Rest of today..SE winds 5 to 15 kt. Wind waves 2 ft or less. W swell 6 to 8 ft at 18 seconds and S 1 to 2 ft at 15 seconds. A chance of showers.
Tonight..SE winds 15 to 25 kt with gusts up to 30 kt. Wind waves 4 to 6 ft. W swell 7 to 9 ft at 17 seconds and S 1 to 2 ft at 14 seconds. Showers likely.
Wed..S winds 20 to 30 kt. Wind waves 6 to 8 ft. W swell 7 to 10 ft at 16 seconds and S 1 to 2 ft at 16 seconds. Showers likely and a slight chance of Thunderstorms.
Wed night..NE winds 5 to 15 kt. Wind waves 3 to 4 ft. W swell 8 to 9 ft at 14 seconds and S 1 to 2 ft at 16 seconds. A chance of showers.
Thu..NW winds 5 to 15 kt. Wind waves 2 ft or less. W swell 6 to 8 ft at 17 seconds and S 1 to 2 ft at 15 seconds.
Thu night..NW winds 5 to 15 kt. Wind waves 2 ft or less. W swell 6 to 7 ft at 18 seconds and S 1 to 2 ft at 15 seconds.
Fri..S winds 15 to 25 kt with gusts up to 30 kt. Wind waves 3 to 5 ft. W swell 8 to 11 ft and S 1 to 2 ft. Rain.
Sat..NW winds 5 to 15 kt. Wind waves 2 ft or less. W swell 10 to 13 ft and S 1 to 2 ft. Winds and wind waves higher in and near Thunderstorms.
PZZ500 208 Pm Pdt Tue Mar 19 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Southerly winds will continue tonight ahead of an approaching low pressure system and cold front moving in from the west. Winds will increase overnight and tomorrow before winds veer to the west to northwest later tomorrow. A long period west swell will continue into this evening increasing shoaling on bars and harbor entrances. An additional long period west to northwest swell will arrive towards the end of the week.


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


Area Discussion for - Sacramento, CA
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Fxus66 ksto 192213
afdsto
area forecast discussion
national weather service sacramento ca
313 pm pdt Tue mar 19 2019

Synopsis
Last day of dry and mild weather today. Precipitation chances
return tonight bringing high mountain snow with travel delays
through Wednesday night. Another wet system is possible late
Friday into Saturday.

Discussion
Upper trough with negative tilt orientation currently west of the
bay area will move east through norcal tonight. There is not a
lot of moisture with this system. Although, a reasonable amount of
mid-level instability will allow scattered showers and isolated
thunderstorms to develop this evening, best chances will be from
7 pm to 2 am. Snow levels will start out pretty high, above 7000
feet, but lower to 5500 feet by Wednesday. Rainfall over the
valley will be generally light from 0.25-0.50 inches, but locally
heavier in thunderstorms, also some small hail will be possible in
any stronger storms. Snowfall at pass level will be 4 to 8
inches, heaviest period will be after midnight tonight.

Showers are likely to decrease some Wednesday morning, but
atmosphere is expected to again turn unstable during the
afternoon. A better shear profile with increasing southeast low-
level flow will give storms better organization and it is
possible the strongest storms will be Wednesday afternoon, instead
of this evening. Scattered snow showers to continue over the
mountains with accumulations dependent on where convection sets
up.

Dry conditions look to return for most valley locations Thursday
into Friday morning with scattered light showers continuing over
the mountains, not expecting much snow accumulation. Next system
will move in on Friday with more wet weather and mountain travel
delays, but not expecting significant precipitation.

.Extended discussion (Saturday through Tuesday)
guidance for the weekend continues to show a trough passing
through the region on Saturday with weak ridging building behind
it Sunday. Models have trended wetter over the past few runs. Rain
and snow showers will be likely over the foothills and the ridges
Saturday. Drier weather expected by Sunday. Model and ensemble
guidance continue to hint at wet weather for early next week, with
a broad low pressure system sitting off the west coast. Rain
could make into northern california as early as Monday morning,
but the timing is likely to change as we're fairly far out in the
extended forecast.

Aviation
Vfr conditions expected with areas of MVFR possible after 03z due
to showers. Isolated valley thunderstorms will be possible
through 06z Wednesday and again between 18z Wednesday and 03z
Thursday. Southerly winds increase tonight becoming 10-20 knots by
12z.

Sto watches warnings advisories
Winter weather advisory from 11 pm this evening to 11 pm pdt
Wednesday for west slope northern sierra nevada.



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 36 mi26 min SE 7.8 G 9.7 55°F6 ft1010.4 hPa
ANVC1 - 9416841 - Arena Cove, CA 40 mi28 min WSW 1.9 G 5.1 57°F 53°F1010.2 hPa
PRYC1 - 9415020 - Point Reyes, CA 49 mi28 min 57°F1010.4 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 mi23 minSW 510.00 miOvercast66°F45°F47%1008.8 hPa

Wind History from STS (wind in knots)
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Last 24hrS9SW9SW6SE4S5S8SE6S6S6CalmCalmCalmCalmCalmSW3CalmCalmCalmN3CalmCalmSE4SW6S6
1 day agoSW6S7S6S6CalmCalmW3NW3NW4CalmNW3CalmNW4N6NW4CalmNW3NW4CalmCalmCalm4SW7S9
2 days agoS10W7SW6S5SE7S4S3SE3CalmCalmW3CalmNW3CalmCalmCalmCalmCalmN3CalmCalm4S5S8

Tide / Current Tables for Fort Ross, California
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Fort Ross
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Tue -- 04:10 AM PDT     1.51 feet Low Tide
Tue -- 06:45 AM PDT     Moonset
Tue -- 07:18 AM PDT     Sunrise
Tue -- 10:01 AM PDT     6.10 feet High Tide
Tue -- 04:44 PM PDT     -0.67 feet Low Tide
Tue -- 06:03 PM PDT     Moonrise
Tue -- 07:23 PM PDT     Sunset
Tue -- 11:15 PM PDT     5.46 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.73.72.71.91.51.72.53.64.85.76.15.84.83.31.70.3-0.5-0.6-0.112.33.74.85.4

Tide / Current Tables for Salt Point, California Current
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Salt Point
Click for Map
Tue -- 02:12 AM PDT     -1.06 knots Max Ebb
Tue -- 05:32 AM PDT     0.00 knots Slack
Tue -- 06:46 AM PDT     Moonset
Tue -- 07:18 AM PDT     Sunrise
Tue -- 08:26 AM PDT     1.14 knots Max Flood
Tue -- 11:22 AM PDT     -0.00 knots Slack
Tue -- 02:28 PM PDT     -1.61 knots Max Ebb
Tue -- 06:03 PM PDT     Moonrise
Tue -- 06:12 PM PDT     0.00 knots Slack
Tue -- 07:24 PM PDT     Sunset
Tue -- 09:10 PM PDT     1.36 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-0.8-1.1-1-0.7-0.30.30.81.11.10.80.3-0.5-1.2-1.6-1.6-1.3-0.8-0.10.61.11.41.30.9

Weather Map and Satellite Images
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wmap_P
GOES 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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Sacramento, CA (19,4,5,8)
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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 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.