Tuesday, May22, 2018 L-36.com


Marine Weather and Tides
Tahoma, CA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:39AMSunset 8:13PM Tuesday May 22, 2018 12:22 PM PDT (19:22 UTC) Moonrise 12:19PMMoonset 1:08AM Illumination 54% Phase: First Quarter Moon; Moon at 8 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 Tahoma, CA
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location: 39.03, -120.28     debug


Area Discussion for - Sacramento, CA
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Fxus66 ksto 220907
afdsto
area forecast discussion
national weather service sacramento ca
207 am pdt Tue may 22 2018

Synopsis
Afternoon and evening thunderstorms possible mainly over higher
terrain this week. These may extend through the valley late in the
week. Slightly cooler than normal temperatures continue across
most of the region this week warming to above normal early next
week.

Discussion
A low pressure area centered over nevada will drift northward
during the day. We will still have predominately easterly flow
aloft so activity that starts in the mountains during the day will
be trying to push towards the valley once again with the best
chances in the valley during the evening hours over the
central and northern sacramento valley. The delta breeze is
expected to remain moderate to locally strong through the day and
tonight. This will help to keep inland temperatures fairly cool
today for this time of year. The only exception will be over the
north end of the valley which will warm well into the 80s. Some
stratus will possibly advect into the valley the next couple of
mornings.

A low pressure area centered to our northwest will not only help
to keep an enhanced delta breeze but may help to keep some showers
overnight on Tuesday in the mountains.

On Wednesday we will still have a decent delta breeze in place and
temperatures are expected to be slightly cooler across the
region. Unstable air over the mountains will continue with
possible afternoon and evening thunderstorm activity.

The low pressure area to our northwest will continue to move
closer to the region Thursday and Friday moving through Friday
night. This low will have cooler air associated with it so expect
temperatures to remain below normal for the latter part of the
week and unstable conditions each day. Snow levels may drop to
around pass levels during the day and below Friday night. At this
time though precipitation amounts look light but 2 to 4 inches of
snow across the peaks looks possible. There should be an increase
in shower activity as that low moves closer and through the
region Friday and Friday night.

.Extended discussion (Saturday through Tuesday)
a low pressure area will be passing through during the morning
hours and into nevada in the afternoon on Saturday. Colder air
associated with the low may bring some snow down around pass
levels but at this time the amount of precipitation is minimal so
not expecting much at or below pass levels. The precipitation
should be winding down Saturday night as the low moves further to
the east. Behind the system northerly winds will develop and
temperatures will be warming up to between 85 and 95 for most
valley locations with 90s possible both Monday and Tuesday of next
week.

Aviation
Showers and thunderstorms are expected once again over the
western slopes and will continue through the evening. The activity
may spread into the central and northern sacramento valley mainly
this evening. Local MVFR ifr conditions possible in storms.

Otherwise, mainlyVFR conditions over interior norcal next 24
hours with a chance of stratus spreading into the sacramento
region after 10z with CIGS between 800-1200 ft deep. Gusts 30 to
35 kts in delta until 12z Wednesday, winds mainly staying less
than 15 knots at TAF sites.

Sto watches warnings advisories
None.



Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
South Lake Tahoe, Lake Tahoe Airport, CA17 mi29 minNNE 710.00 miMostly Cloudy57°F43°F60%1012.2 hPa
Truckee-Tahoe, CA21 mi37 minESE 410.00 miOvercast61°F44°F55%1016.3 hPa

Wind History from TVL (wind in knots)
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Last 24hrSE7Calm4
G18
4NE4CalmCalmCalmCalmCalmCalmCalmCalmS5S3S5Calm3CalmS4CalmN4N7N7
1 day agoS7SW12
G19
S7SW7S9--S8CalmCalmCalmSE5S4CalmCalmS3S4CalmSE4CalmN5N7E3NE7NE8
2 days agoNE9NE73SW8SE8S7CalmCalmCalmS4S3S3S3CalmS3CalmCalmCalmS6CalmCalm3----

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
Click for Map
Tue -- 02:11 AM PDT     Moonset
Tue -- 02:32 AM PDT     2.50 feet High Tide
Tue -- 05:48 AM PDT     Sunrise
Tue -- 09:32 AM PDT     0.58 feet Low Tide
Tue -- 01:24 PM PDT     Moonrise
Tue -- 01:30 PM PDT     2.34 feet High Tide
Tue -- 08:17 PM PDT     Sunset
Tue -- 10:12 PM PDT     -0.13 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.322.42.52.31.91.51.10.80.60.61.21.92.32.32.21.91.510.60.30-0.10

Tide / Current Tables for Sacramento, Sacramento River, California
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Sacramento
Click for MapNote: These data apply only during low river stages.

Tue -- 02:11 AM PDT     Moonset
Tue -- 02:32 AM PDT     2.51 feet High Tide
Tue -- 05:48 AM PDT     Sunrise
Tue -- 09:32 AM PDT     0.59 feet Low Tide
Tue -- 01:24 PM PDT     Moonrise
Tue -- 01:30 PM PDT     2.34 feet High Tide
Tue -- 08:17 PM PDT     Sunset
Tue -- 10:12 PM PDT     -0.12 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.322.42.52.31.91.51.10.80.60.61.21.92.32.32.21.91.510.60.30-0.10

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 (15,3,4,5)
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Ground Weather Radar Station Reno, NV
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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.