Saturday, July22, 2017 L-36.com


Marine Weather and Tides
Penn Valley, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 5:57AMSunset 8:27PM Saturday July 22, 2017 1:42 PM PDT (20:42 UTC) Moonrise 4:11AMMoonset 6:55PM Illumination 1% Phase: Waning Crescent; Moon at 29 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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7 Day Forecast for Marine Location Near Penn Valley, CA
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location: 39.21, -121.2     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 221030
afdsto
area forecast discussion
national weather service sacramento ca
330 am pdt Sat jul 22 2017

Synopsis
Hot and dry weather today. Widespread triple heat across the
valley this weekend. A little cooler next week. Slight chance of
sierra thunderstorms Sunday afternoon and into early next week.

Discussion
High pressure aloft over the southwest u.S. Bringing fair skies
to the CWA this morning with temperatures running just a bit
higher that 24 hours ago. Upper ridge is forecast to back eastward
over the state today bringing a warm up of several degrees. The
northern sacramento valley could see daytime highs today near 110
degrees. Will leave the heat advisory up as is with heat risk
criteria still being met. Sub tropical moisture and instability
appear to remain south of the forecast area today so have left
any shower or thunderstorm out of the forecast for now. Models in
good agreement in moving a weak upper low in off the north coast
on Sunday. More onshore flow and a slight airmass cooling will
bring slightly cooler temperatures. Bigger impact may be push of
sub tropical air northward up the sierra crest. GFS shows
instability along the crest as well so an afternoon slight
thunderstorm chance along the sierra crest seems a reasonable
forecast threat. Upper low digs a bit farther southward on Monday.

Southeast flow aloft will continue to bring moisture and
instability up the sierra crest so thunderstorm threat continues.

More airmass cooling should drop daytime highs most valley
locations down to below the century mark. Upper low remains
centered around the north coast on Tuesday bringing still more
cooling. Daytime highs next Tuesday are forecast to drop to near
or even a little below normal. Upper level southerly flow will
continue to bring afternoon and evening thunderstorm threat up the
sierra and cascade crest.

.Extended discussion (Wednesday through Saturday)
computer models have come into better agreement with the handling
of the offshore upper low, with the GFS and ECMWF now pushing the
system inland on Wednesday. As such, thunderstorm chances should
continue across norcal mountains through midweek. Drier weather
ensues toward the end of next week with a slight warming trend and
forecast temperatures a few degrees warmer than normal.

Dang

Aviation
MainlyVFR conditions the next 24 hours across interior norcal,
except reduced visibilities in smoke near the detwiler fire. Winds
will remain light today, except gusts to 25 kt near the delta and
over higher terrain.

Dang

Sto watches warnings advisories
Heat advisory from noon today to 9 pm pdt Sunday for central
sacramento valley-mountains southwestern shasta county to
northern lake county-northeast foothills sacramento valley-
northern sacramento valley-shasta lake area northern shasta
county.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 82 mi58 min SW 1.9 89°F 1012 hPa60°F
PCOC1 - 9415144 - Port Chicago, CA 91 mi43 min W 8 G 9.9 80°F 72°F1011.6 hPa (-1.4)

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Marysville, Beale Air Force Base, CA14 mi45 minSW 610.00 miFair92°F56°F30%1011 hPa
Auburn Municipal Airport, CA19 mi48 minN 010.00 miFair90°F51°F27%1014.2 hPa
Marysville, Yuba County Airport, CA21 mi50 minVar 510.00 miFair94°F55°F27%1011.8 hPa
Lincoln Regional Karl Harder Field, CA22 mi48 minSW 610.00 miFair95°F46°F19%1011.2 hPa

Wind History from GOO (wind in knots)
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Last 24hrE7SE3SE4S4S6SW4S3SW7S3S5
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1 day ago--------------------------CalmCalmCalmCalmCalmE6E5E5E6E6E7
2 days agoNE10
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W9W7N3CalmCalmE7E9E11E11
G16
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Tide / Current Tables for Sacramento, Sacramento River, California
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Sacramento
Click for MapNote: These data apply only during low river stages.

Sat -- 01:32 AM PDT     0.77 feet Low Tide
Sat -- 05:14 AM PDT     Moonrise
Sat -- 05:57 AM PDT     3.57 feet High Tide
Sat -- 05:59 AM PDT     Sunrise
Sat -- 03:13 PM PDT     -0.22 feet Low Tide
Sat -- 07:54 PM PDT     Moonset
Sat -- 07:59 PM PDT     2.61 feet High Tide
Sat -- 08:25 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.80.81.42.43.33.63.43.12.621.40.80.3-0-0.2-00.71.62.32.62.52.11.7

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Sat -- 01:31 AM PDT     0.77 feet Low Tide
Sat -- 05:14 AM PDT     Moonrise
Sat -- 05:57 AM PDT     3.57 feet High Tide
Sat -- 05:59 AM PDT     Sunrise
Sat -- 03:14 PM PDT     -0.23 feet Low Tide
Sat -- 07:54 PM PDT     Moonset
Sat -- 07:59 PM PDT     2.61 feet High Tide
Sat -- 08:25 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
10.80.81.42.43.33.63.43.12.621.40.80.3-0-0.2-00.71.62.32.62.52.11.7

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

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