Thursday, April25, 2019 L-36.com


Marine Weather and Tides
Kirkwood, 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 6:07AMSunset 7:47PM Thursday April 25, 2019 5:08 PM PDT (00:08 UTC) Moonrise 12:19AMMoonset 10:07AM Illumination 60% Phase: Waning Gibbous; Moon at 21 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 Kirkwood, CA
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location: 38.82, -120.06     debug


Area Discussion for - Reno, NV
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Fxus65 krev 252212
afdrev
area forecast discussion
national weather service reno nv
312 pm pdt Thu apr 25 2019

Synopsis
Well above average temperatures this week will lead to increased
mountain snowmelt with cold and swift flows for area streams,
with minor flooding possible for agricultural areas in the carson
valley by early Friday morning. Isolated showers and thunderstorms
are possible through this evening mainly east of reno carson
metros. It will turn cooler with a chance of showers next week.

Short term
No major changes were made to the existing forecast as
temperatures remain well above climatic averages into the weekend.

The biggest adjustment was a very slight increase in snowmelt
runoff potential expected for the snowpack in the eastern sierra.

As such, a flood advisory was issued for areas along the west fork
of the carson river mainly from the nevada state line up to genoa
lane from tonight through early Monday. Periods of minor flooding
will be likely and could temporarily result in the closing of
mottsville and centerville lanes each night. Otherwise, the
continued threat of cold, fast flows on area rivers remain, but no
other flooding is currently expected.

Sobering cold water fact: roughly 20 percent of those who fall in
cold water die in the first minute of immersion due to cold water
shock. Avoid becoming a statistic and be safe around the very
cold, fast-moving streams, creeks, and rivers during these warm
days. For more details on specific hydrology concerns see the
hydrology section below.

As for other weather-related concerns, a few isolated
thunderstorms could develop late this afternoon as a wave moves
through the pacific northwest. Although the 12z NAM did highlight
a cell or two in the vicinity of reno, the best chances remain
east of reno along the virginia range into the great basin.

Forcing appears to be sufficient to allow for cells to linger into
the late evening hours as the wave progresses eastward.

Gradients aloft will remain tighter heading into the weekend
resulting in some lightly breezy winds Friday and Saturday. With
westerly flow increasing, a few showers and a very rare
thunderstorm cannot be ruled out downwind of lassen peak out to
around eagle lake in western lassen county on Friday. Gusts will
generally be around 25-30 mph for afternoon maximums. Temperatures
cool back toward seasonal averages as upper level heights begin
to fall. Boyd

Long term End of april - beginning of may...

model simulations continue to point towards cooler, cloudier
weather, with potential for some light precipitation for the
beginning of next. A weak area of low pressure is forecast to brush
through southern california Sunday. Then, on Monday night, a cold
front is expected to move through western nevada from the north.

Sunday's system will bring a slight chance of precipitation to the
eastern sierra with snow levels near 9000 feet, though amounts are
expected to be light. The cold front on Monday will bring colder air
back into the region with a decent shot of precipitation possible in
central and eastern nevada along the cold front, and trace amounts
to western nevada and the sierra.

While the cold front next week will push daytime high temperatures
down 10-15 degrees below todays temps, it will actually be right
around average for this time of year. -zach

Aviation
Conditions will remainVFR for area terminals with only trk
possibly seeing another round of fog by Friday morning. Afternoon
winds will generally gust to around 25kts through Saturday with
westerly flow increasing aloft. Some light to moderate turbulence
should be expected plus minus 2000 ft of ridge level.

Otherwise, some light convection is possible this afternoon into
the evening hours mainly east of rno-cxp. While a thunderstorm
cannot be ruled out for lol, nfl, or wmc this evening, activity
should be mostly showers. Boyd

Hydrology
Most rivers and streams are expected to stay significantly below
flood stages this week. The primary exception is the west carson
river. The flood watch for the west carson river was upgraded
today to a flood advisory from tonight through Monday morning.

The most recent RFC forecast for the west carson river has levels
reaching flood stage each night through Sunday night. The west
fork carson river is expected to barely reach flood stage and
would only affect small parts of the southern end of the carson
valley. However, periodic road closures for mottsville and
centerville lanes will be possible during the overnight hours when
it will be difficult to see flooding conditions. The only other
impact expected would be minor flooding of agricultural areas
adjacent to the west fork of the carson river.

High flows are expected to continue into the weekend. Still, the
highest flows are still beyond the forecast window for most rivers
and streams draining high elevation terrain, especially from the
lake tahoe area south through mono county. Remember: snowmelt
peaks typically occur in the evening and overnight hours in the
higher portions of the basin while peaks are more likely in the
early morning hours in the lower portions of the basin.

-boyd bardsley

Rev watches warnings advisories
Nv... None.

Ca... None.

For more information from the national weather service visit...

http: weather.Gov reno


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
South Lake Tahoe, Lake Tahoe Airport, CA7 mi15 minS 10 G 1510.00 miA Few Clouds68°F39°F36%1017.4 hPa

Wind History from TVL (wind in knots)
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Last 24hr3CalmCalmS3S4S4S4CalmCalmS3CalmS3S4CalmS3E4Calm------N73S8S10
G15
1 day ago--CalmCalmS4S4SW4S5CalmS3S3CalmS3CalmS3S3CalmNE545N7NE8--Calm4
2 days agoN8--4NE3CalmCalmSW543SW44SW54CalmS6Calm4343CalmN8N84

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
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Thu -- 01:15 AM PDT     2.28 feet High Tide
Thu -- 01:24 AM PDT     Moonrise
Thu -- 06:16 AM PDT     Sunrise
Thu -- 07:29 AM PDT     0.85 feet Low Tide
Thu -- 11:12 AM PDT     2.56 feet High Tide
Thu -- 11:14 AM PDT     Moonset
Thu -- 07:52 PM PDT     Sunset
Thu -- 08:59 PM PDT     0.01 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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22.32.221.61.310.90.91.42.22.62.52.42.11.71.30.90.50.30.100.20.7

Tide / Current Tables for Clarksburg #4, Sacramento River, California
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Clarksburg #4
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Thu -- 12:06 AM PDT     2.28 feet High Tide
Thu -- 01:24 AM PDT     Moonrise
Thu -- 05:59 AM PDT     0.85 feet Low Tide
Thu -- 06:16 AM PDT     Sunrise
Thu -- 10:03 AM PDT     2.56 feet High Tide
Thu -- 11:14 AM PDT     Moonset
Thu -- 07:29 PM PDT     0.01 feet Low Tide
Thu -- 07:51 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.32.21.91.51.20.90.91.11.72.32.62.52.321.61.10.70.40.200.10.40.91.5

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 Reno, NV (20,4,5,8)
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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.