Friday, February22, 2019 L-36.com


Marine Weather and Tides
Floriston, 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 6:41AMSunset 5:46PM Friday February 22, 2019 7:43 PM PST (03:43 UTC) Moonrise 9:41PMMoonset 8:53AM Illumination 86% Phase: Waning Gibbous; Moon at 18 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 Floriston, CA
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location: 39.39, -120.08     debug


Area Discussion for - Reno, NV
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Fxus65 krev 222302
afdrev
area forecast discussion
national weather service reno nv
302 pm pst Fri feb 22 2019

Synopsis
Weak high pressure will provide a break from the snow through
Saturday, but temperatures will remain below normal. We should
transition back to a more active pattern late in the weekend and
next week.

Short term
Very cold temperatures occurred last night over the region,
mainly due to the clearing skies and widespread snow cover across
the valleys. South lake tahoe airport made a new daily record low
temperature this morning of -8 degrees. This beat the previous
record of -5 degrees set on this date back in 2011.

High pressure ridge remains over the region through Saturday, with
cold conditions once again tonight (although not quite as cold as
last night). This is a weak ridge that will transition into zonal
flow by tomorrow evening.

Low pressure moves into the pacific northwest late Saturday into
Sunday, bringing some moisture into far northern california. A few
light snow showers will move into the northern sierra and
northeastern ca by Saturday night into Sunday morning, with light
snow accumulations possible. The last model runs continue to
slow down the progression of the low, keeping most of the
precipitation north of tahoe through Sunday night. The one place
that could see some decent snowfall Sunday afternoon-Sunday night
could be western lassen county, where we could see 4-8 inches of
snow before Monday morning. Lower elevations in lassen county and
modoc (surprise valley) will see a 2-4 inches of snow Sunday
night. -hoon

Long term Monday through Wednesday...

starting on Monday, an area of low pressure looks to park itself
just off the coast of british columbia. This will set up a zonal
flow pattern over the western half of the u.S. With the main frontal
boundary and associated jet draped over the pacific NW region. By
Tuesday into Wednesday, winds and precipitation chances increase as
the low pressure and polar jet drop southward a bit.

Winds: as of now, the forecast looks pretty windy for the beginning
half of next week. Not going to get into the specifics at this time,
but the overall consensus is to increase south-southwest winds
for Monday with the strongest winds for Tuesday & early Wednesday
due to the placement of the jet. Ridge winds could easily see
gusts reaching 100 mph contributing to turbulent conditions over
the sierra. Winds for western nevada will most likely be a concern
as well due to the stable and shadowing nature, in regards to
precipitation, with this set up. By Wednesday afternoon, winds
should decrease slightly all depending on overall spillover, which
recent model runs do show a hint of spillover precip.

Precipitation: this potential set up will confine precipitation
chances mainly for northeast california and areas north of the or id
border. A good slug of moisture looks likely to move through those
areas starting Monday afternoon and into early Wednesday. Ar
detection tools do show a good sign for a significant amount of
moisture, at this time, along the coastal regions, but lacking
inland penetration. In accordance with this, the recent runs of
the GFS and ec do show light precipitation amounts (compared to
recent storms) for the eastern sierra with much of western nv
being shadowed out at this time. Nevertheless, the potential for a
notable amount of precipitation is still possible for our region,
but is looking not as likely.

Snow levels amounts: with any precipitation we do get out of next
week's system, the type, of course, will vary. Snow levels on
Monday will start around 5000 feet, but will gradually increase
Tuesday up to around 6500-7000 feet by Wednesday afternoon due to
warm air advection. With that said, forecaster confidence is low
in regards to snow accumulation in the sierra during this
timeframe. Total amounts of 6-10" of snow around the tahoe basin
with up to 2 ft above 7000 feet are possible by Wednesday
afternoon. As always, be prepared for potential winter weather
hazards in the sierra, especially for mono county where we see
typically more precipitation snow with this kind of winter set up.

Not much, if any, snow accumulation is expected for the western
nevada valleys due to the presence of warmer air and limited
spillover.

-laguardia

Thursday through next weekend
Later next week, it looks more likely that the eastern sierra and
western nv will be in between storm systems as the first wave
lifts northward and away from our region. Some lingering showers
remain possible especially near the sierra and north of i-80 on
Thursday. Then a shortwave ridge looks to move across eastern ca-
western nv on Friday favoring dry conditions, although confidence
isn't high enough to completely remove precip chances for parts of
northeast ca-northwest nv due to some variances in the ridge
amplitude. Even so, if any precip occurs Friday it will be quite
light. Temperatures will still be mild near seasonal averages
(highs in the 50s for lower elevations and 40s near the sierra).

Another storm is possible by Friday night into the first weekend of
march, bringing a round of precipitation. Overall, it looks like
snow levels will be rather high, although a dry air mass ahead of
this system could produce a short period of snow down to lower
elevations early next weekend. Confidence in precip amounts is
still rather low as the duration and location of the pacific
moisture feed show some variance on the medium range guidance
data. Mjd

Aviation
Vfr conditions with light winds are expected to prevail through
Saturday. There is about a 40% chance for some fzfg formation
around ktrk-ktvl late tonight into early Saturday morning,
although the dry air mass should limit coverage and duration.

By Sunday, very light snow may reach ktvl ktrk ahead of another
storm system, but significant impacts to CIGS vsby are not
expected as the main moisture feed is more likely to remain
farther north. Mjd

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
Truckee-Tahoe, CA6 mi68 minN 010.00 miFair19°F12°F73%1017.3 hPa
Reno, Reno Tahoe International Airport, NV18 mi48 minW 410.00 miFair31°F10°F43%1021.1 hPa
Reno/Stead, NV22 mi68 minN 510.00 miFair18°F10°F73%1017.3 hPa
Carson City Airport, NV23 mi48 minN 010.00 miFair21°F10°F63%1018.3 hPa

Wind History from TRK (wind in knots)
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Last 24hrN9
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N6CalmCalmE3CalmNE3CalmCalmCalmCalmCalmCalmCalmN5Calm------CalmCalmCalmSE5
1 day agoCalmCalmE3SW3CalmCalmCalmCalmCalmCalmCalm--CalmN4NE6------NE10NE10N7NE8N17
G22
N10
2 days agoS3CalmCalmCalmW3CalmNW8W13SW7N6W6S4CalmCalmE5W5E4NW8N8S4CalmCalmCalmCalm

Tide / Current Tables for Sacramento #4, Sacramento River, California
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Sacramento #4
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Fri -- 04:30 AM PST     -0.04 feet Low Tide
Fri -- 06:48 AM PST     Sunrise
Fri -- 08:58 AM PST     Moonset
Fri -- 09:16 AM PST     2.96 feet High Tide
Fri -- 04:53 PM PST     0.31 feet Low Tide
Fri -- 05:51 PM PST     Sunset
Fri -- 09:13 PM PST     2.95 feet High Tide
Fri -- 09:46 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.81.10.60.2-000.71.72.52.92.92.62.11.61.10.70.40.30.71.62.52.92.92.6

Tide / Current Tables for
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Weather Map and Satellite Images
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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 (22,6,7,8)
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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.