Friday, July19, 2019 L-36.com


Marine Weather and Tides
Penn Valley, CA

Version 3.4
NOTICE
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 5:54AMSunset 8:30PM Friday July 19, 2019 3:49 AM PDT (10:49 UTC) Moonrise 9:30PMMoonset 7:25AM Illumination 94% Phase: Waning Gibbous; Moon at 17 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 182200
afdsto
area forecast discussion
national weather service sacramento ca
300 pm pdt Thu jul 18 2019

Synopsis
Slight cooling tomorrow, followed by a slight warm up early next
week. Breezy winds through the delta and over the sierra crest at
times.

Discussion
Little in the way of sensible weather through the weekend. Dry
weather and mostly clear skies look to persist. Slightly cooler
temperatures will be seen tomorrow with highs ranging from the
upper 80s in the southern sacramento valley to the upper 90s in
the north. Slight troughing over the area will give way to an
amplifying high pressure over the great basin by late weekend.

Added a slight chance for an isolated thunderstorm over the sierra
crest over tuolumne apline counties Saturday night as the trough
moves out. The delta breeze continues through the weekend keeping
low temperatures around this area in the low 60s.

Extended discussion (Monday through Thursday)
12z GEFS 00z eps 5h height anomaly progs very similar in amplifying
the ridge axis of the 4-corners high well into the WRN half of
canada and into ak at the onset of the efp, followed by a flattening
of the ridge over NRN rockys WRN canada later next week. The
flattening of the ridge to our N results in a westward expansion of
the ridge offshore, replacing the weakening nern pac cyclone.

Seasonable temps forecast for Mon Tue with a warming trend into the
latter half of the week as 850 mbs temps warm into the mid 20s deg c
over much of our cwa. Dry adiabatic descent of these temps should
result in some triple digit heat in the vly from mid week into next
weekend. Daily MAX temps for smf from the GFS ensemble shows temps
in the upper 90s early in the week, reaching into the 100s Wed thru
the end of the month with a high of 105 on sat. Meanwhile, the
ecm ensemble shows temps in the mid 90s Mon tue, warming into the
upper 90s wed, then low 100s Thu through Sun with a high of 104 on
sat. During the 6-10 day, jul 23-27 period, the CPC has calculated
a 57% chance of a MAX hi (heat index) of 100, and 85-90% chance
of >100 (102+) at rbl and sck. These occurrences will more likely
occur near the end of this period and into the weekend.

A couple of surges of monsoon moisture are forecast during the
period, one on mon, and the other Wed thu, as the steering flow
strengthens around the 4-corners high. An increase in humidity is
likely with this moisture surge, and may also lead to convection
near the sierra crest, mainly S of the tahoe area. In general, the
sw flow aloft will keep the moisture shunted to the E side of our
cwa and will tend to carry storms to the NE of our cwa.

Expect strong thermal belts to develop in the foothills overnite
and some warm overnite mins in the 60s and 70s later in the week.

Jhm

Aviation
Vfr skc-sct250 conditions next 24 hours. Occasional southwest wind
gusts 25-35 kts vicinity carquinez strait delta; otherwise,
sustained winds generally below 15 knots.

Sto watches warnings advisories
None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SFXC1 - San Francisco Bay Reserve, CA 82 mi65 min WNW 8 57°F 1011 hPa55°F
PCOC1 - 9415144 - Port Chicago, CA 91 mi50 min WSW 9.9 G 12 61°F 70°F1010.8 hPa (-0.5)

Wind History for Port Chicago, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Nevada County Air Park, CA10 mi55 minN 010.00 miFair68°F51°F56%1013.9 hPa
Marysville, Beale Air Force Base, CA14 mi1.9 hrsS 610.00 miFair64°F58°F81%1009.3 hPa
Auburn Municipal Airport, CA19 mi75 minE 610.00 miFair68°F55°F64%1011.5 hPa
Marysville, Yuba County Airport, CA21 mi57 minSSE 910.00 miFair65°F57°F78%1009.9 hPa
Lincoln Regional Karl Harder Field, CA22 mi55 minSSE 710.00 miFair64°F55°F73%1009.8 hPa

Wind History from GOO (wind in knots)
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Last 24hrSE3SE54SE5SE5445
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1 day agoCalmCalmCalmCalmCalmCalm3Calm444SW6
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2 days agoCalmCalmCalmCalmCalmCalmCalmCalm5SW5Calm4
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Tide / Current Tables for Sacramento, Sacramento River, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Fri -- 04:43 AM PDT     0.93 feet Low Tide
Fri -- 05:56 AM PDT     Sunrise
Fri -- 08:27 AM PDT     Moonset
Fri -- 08:30 AM PDT     3.02 feet High Tide
Fri -- 05:40 PM PDT     -0.06 feet Low Tide
Fri -- 08:27 PM PDT     Sunset
Fri -- 10:29 PM PDT     Moonrise
Fri -- 10:51 PM PDT     2.60 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.31.91.51.2111.42.32.932.82.521.510.50.2-0-00.41.21.92.42.6

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 (6,6,7,8)
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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.