Wednesday, June28, 2017 L-36.com


Marine Weather and Tides
Magalia, 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 5:39AMSunset 8:40PM Wednesday June 28, 2017 12:07 AM PDT (07:07 UTC) Moonrise 9:56AMMoonset 11:14PM Illumination 18% Phase: Waxing Crescent; Moon at 4 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 Magalia, CA
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location: 39.77, -121.63     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 280355
afdsto
area forecast discussion
national weather service sacramento ca
855 pm pdt Tue jun 27 2017

Synopsis
Near average temps thru mid-week followed by a warming trend.

Discussion
Strong delta breeze working tonight helping to bring cooler
air into the interior. A very weak trough remains over the
region helping to keep the stronger onshore flow. Onshore
pressure gradient is currently 3.6 mb between sfo-sac and the
delta breeze is expected to stay up through the night. Marine
layer is currently at around 2000 feet and models indicate a
chance for some patches of low clouds to make it into the
sacramento area again late tonight. Generally the same locations
as this morning. Many temperatures in the region should cool into
the mid 50s by morning with the north end of the valley cooling to
the mid 60s. Mountain valley temperatures generally cooling into
the 30s and 40s. Only slight warming expected on Wednesday above
today's highs.

Previous discussion weaker delta breeze today than yesterday
resulted in a few degrees of warming in the delta influenced
areas, while temps mostly followed persistence or were just
slightly warmer elsewhere.

Yesterday's short wave trof is now over id and moving farther away
allowing flat ridging to build in its wake. However, a weak trof
is moving into the pac NW with a weak short wave moving across
norcal early this evening. Hence, the delta breeze should increase
again, but likely not quite as strong (or to the extent) as the
recent past. That makes for a lower probability (less of a chance)
of stratus making it inland in a similar fashion than the
previous two mornings. Marginal instability is forecast over the
nrn mtns, mostly over the trinity alps and siskiyous, where short-
lived convection may materialize, just N or our cwa.

Warming returns wed-fri as ridging over the eastern pacific moves
onto the west coast. This will suppress the marine layer weakening
onshore flow and resulting in modest synoptic warming. 850 mbs and
low level thickness values suggest another 2-4 degrees of warming or
so over most locales each day for the next couple of days. That
means triple digit heat will likely return to the NRN sac valley
thu-fri and possibly into the SRN sac vly. The question is, will
the delta breeze arrive on time Fri afternoon to keep MAX temps
below 100 in the SRN sac vly? With the gfs ECMWF faster with the
incoming trof than the gem on Fri (gfs ECMWF well E of 130w, while
the gem is along 130w), the chances are good that a delta breeze
will be initiated in time to provide some cooling in the delta
influenced areas. The passing trof will promote a cooling breeze
fri nite and its fast movement will allow heights to rebuild
rapidly on sat. Nly flow in the wake of the trof will provide a
rapid warm-up on sat. Jhm
.Extended discussion (Saturday through Tuesday)
forecast models indicate a weak short wave trough moving across
the forecast area on Saturday with minimal impacts. Have nudged
up temperatures on Saturday given northerly flow and a weak delta
breeze. Therefore, a slight warm up is expected near the delta
influenced areas, while triple digit heat could be expected over
the northern sacramento valley. Temperatures will remain above
normal this weekend. Otherwise, highs could return to near average
for this time of the year early next week. However, there are
model differences at this point, with the ECMWF showing increasing
heights over the great basin. Dry weather will continue during
the extended period.

Aviation
Vfr conditions the next 24 hours. South to west winds 5 to 15 kt
will decrease overnight. Near the delta... Sw wind gusts up to 30
kt expected. A chance for some patches of MVFR CIGS around ksac to
kmhr 11z-15z.

Sto watches warnings advisories
None.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chico Municipal Airport, CA12 mi73 minSE 710.00 miFair79°F50°F37%1010.2 hPa
Oroville Municipal Airport, CA19 mi75 minSSE 1210.00 miFair76°F59°F56%1010.5 hPa

Wind History from CIC (wind in knots)
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Last 24hrSE6SE5SE5CalmCalmCalmNW55555555SE6SE8SE10S9S11S8SE7SE5SE8SE10
1 day agoSE12SE11SE11S9SE6SE6S8SE7SE5E5S6SE10
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2 days agoSE8SE3W5CalmSE7SE6SE10S6SE6S6S6S7SE5SE10S9
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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.

Wed -- 05:44 AM PDT     Sunrise
Wed -- 06:36 AM PDT     0.67 feet Low Tide
Wed -- 10:31 AM PDT     2.87 feet High Tide
Wed -- 10:56 AM PDT     Moonrise
Wed -- 07:20 PM PDT     -0.19 feet Low Tide
Wed -- 08:34 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.72.52.11.71.30.90.70.71.32.22.82.82.72.31.81.30.70.3-0-0.2-0.10.61.42.2

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Wed -- 05:44 AM PDT     Sunrise
Wed -- 06:35 AM PDT     0.66 feet Low Tide
Wed -- 10:31 AM PDT     2.86 feet High Tide
Wed -- 10:56 AM PDT     Moonrise
Wed -- 07:20 PM PDT     -0.19 feet Low Tide
Wed -- 08:34 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.72.52.11.71.20.90.70.71.32.22.82.82.72.31.81.30.70.3-0-0.2-0.10.51.42.2

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 (3,6,7,8)
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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.