Area Forecast Discussion
Issued by NWS Elko, NV

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FXUS65 KLKN 222154

Area Forecast Discussion
National Weather Service Elko NV
154 PM PST Sun Jan 22 2017

.SYNOPSIS...A strong storm will bring heavy snow and blowing snow
to all of northern and central Nevada today, tonight and into
Monday. Drifting of snow across area roadways will be a major
concern, especially across central Nevada. After this storm, very
cold air will infiltrate the Great Basin.


.SHORT TERM...Tonight through Wednesday. A storm is upon us. Winds
began picking up early but have not yet strengthened to the
expected potential. A couple of snow bands set up over northern
Nevada early on and now there is a diffuse flow of moisture
spreading from Reno to Montello. Temperatures have managed to rise
above freezing all around. Satellite imagery early this morning
showed what appeared to be a merging flow over northern Nevada and
this afternoon seems to indicate some enhanced lift over western
Nevada. Winter Storm Warnings and Advisories are in effect,
covering all of northern and east central Nevada.

Tonight through Monday. Winter Storm Warnings are in effect for
Heavy Snow and Blowing Snow covering all areas except extreme
eastern Nevada including Wendover, where lesser amounts of snow
and wind are expected. That area has a Winter Weather Advisory in
effect. Low pressure will drop south along the Oregon and northern
California coast, producing a rather intense diffluent flow aloft
of the LKN CWFA. The nose of a 150-160kt jet flow will pass over
the state north to south. Another surge of moisture will spread
across the Great Basin, partially intercepted by the Sierra-Nevada
range which could reduce snow amounts in the north. At this time,
it looks like a general 4-6 inches of snow for the valleys of
northern Nevada with some valley sites possibly picking up another
inch or two. Even higher amounts are expected across central
Nevada where the jet will likely impact the most, mixing wind
gusts up to 60 mph to the surface. Snow totals could approach 10
inches over northern Nye and White Pine Counties with areas of
blowing snow possibly evolving into blizzard conditions. High Wind
Warnings or even Blizzard Warnings are not out of the question
with this storm, so stay tuned for further developments. Mountains
could get 2 feet of snow as this system passes. High temperatures
will range from the 20s to around 30 degrees. Low temperatures
will be in the 20s.

Monday night through Wednesday. As the system exits, the Great
Basin will be enveloped by a cold trough, followed by a stiff
northerly flow aloft. Although there will be some instability
showers around, temperatures will cool down. The best chance for
precipitation will be over the northeast part of the state where
some moisture will wrap around a surface low over Idaho. Low
temperatures will be in the single digits and teens. High
temperatures will be in the 20s.

.LONG TERM...Wednesday night through Sunday. Northwest flow aloft
with embedded trough energy extending the light snow shower
activity across the region Wednesday night through Thursday night.
Increased pops for this time frame. As trough energy digs south
late this week the flow aloft becomes northerly with colder
temperatures on into the weekend. Most valley locations will have
highs below freezing with lows in the single digits and below


.AVIATION...Snow showers continue across the region today and
tonight with periods of LIFR or VLIFR conditions likely at all
terminals. Gusty winds over Central and portions of Northern NV
will help reduce visibility at times in snow showers. Air mass
will be unstable this evening and overnight with the best chances
of TS across Central NV including KTPH and KELY. Improving
conditions Monday morning as snow showers become lighter. May see
some more isolated TS on Monday.


Winter Storm Warning until 4 AM PST Monday for Humboldt County-
Northern Elko County-Northern Lander County and Northern Eureka
County-Ruby Mountains/East Humboldt Range-South Central Elko
County-Southern Lander County and Southern Eureka County-
Southwestern Elko County.

Winter Weather Advisory until 10 AM PST Monday for Southeastern
Elko County.

Winter Storm Warning until 4 PM PST Monday for Northeastern Nye
County-Northwestern Nye County-White Pine County.



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