Wind Chill Advisory 6, NWS Blacksburg, VA

Alleghany County, NC, Ashe County, NC, Watauga County, NC, Alleghany County, VA, Bath County, VA, Bland County, VA, Botetourt County, VA, Carroll County, VA, City of Buena Vista, VA, City of Covington, VA, City of Galax, VA, City of Lexington, VA, City of Radford, VA, City of Roanoke, VA, City of Salem, VA, Craig County, VA, Floyd County, VA, Giles County, VA, Grayson County, VA, Montgomery County, VA, Pulaski County, VA, Roanoke County, VA, Rockbridge County, VA, Smyth County, VA, Tazewell County, VA, Wythe County, VA, Greenbrier County, WV, Mercer County, WV, Monroe County, WV, Summers County, WV

429 
WWUS41 KRNK 121505
WSWRNK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Blacksburg VA
1005 AM EST Tue Dec 12 2017

...Accumulating snow showers through this evening followed by
bitterly cold wind chills overnight...

.A strong cold front will cross east of the the region this 
afternoon. Increasing northwest winds combined with moisture will
result in upslope snow showers through tonight. The strong winds 
and cold temperatures late tonight will produce wind chills below 
zero at times.

NCZ001-018-WVZ042-043-508-122315-
/O.CON.KRNK.WW.Y.0015.000000T0000Z-171213T1200Z/
/O.CON.KRNK.WC.Y.0006.171213T0500Z-171213T1400Z/
Ashe-Watauga-Mercer-Summers-Western Greenbrier-
Including the cities of West Jefferson, Boone, Bluefield, Hinton,
Hix, Quinwood, Duo, and Rainelle
1005 AM EST Tue Dec 12 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
WEDNESDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM EST WEDNESDAY...

* WHAT...Snow and blowing snow expected. Very cold wind chills 
  expected. Travel will be very difficult to impossible. Tree 
  branches could fall as well. Total snow accumulations of 3 to 
  5 inches are expected, with isolated 6 inch amounts possible. 
  Expect wind chills to range from 5 above zero to 15 below zero.

* WHERE...Western Greenbrier County.

* WHEN...For the Winter Weather Advisory, through 7 AM EST 
  Wednesday. For the Wind Chill Advisory, from midnight tonight to
  9 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 55 mph will cause
  areas of blowing and drifting snow. The cold wind chills will 
  cause frostbite in as little as 30 minutes to exposed skin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing snow will cause primarily travel
difficulties. Be prepared for snow covered roads and limited
visibilities, and use caution while driving. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

NCZ002-VAZ007-009>020-WVZ044-507-122315-
/O.CON.KRNK.WC.Y.0006.171213T0500Z-171213T1400Z/
Alleghany NC-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-Montgomery-
Grayson-Carroll-Floyd-Craig-Alleghany VA-Bath-Monroe-
Eastern Greenbrier-
Including the cities of Sparta, Tazewell, Marion, Bland, 
Pearisburg, Wytheville, Radford, Pulaski, Blacksburg, 
Independence, Whitetop, Troutdale, Volney, Galax, Floyd, 
New Castle, Clifton Forge, Covington, Hot Springs, Union, 
Lewisburg, and White Sulphur Springs
1005 AM EST Tue Dec 12 2017

...WIND CHILL ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM EST WEDNESDAY...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 5 above zero to 5 below 
  zero.

* WHERE...Portions of southwest and west central Virginia, 
  northwest North Carolina and southeast West Virginia.

* WHEN...From midnight tonight to 9 AM EST Wednesday.

* ADDITIONAL DETAILS...Northwest winds will also be gusting as 
  high as 45 mph, especially this evening. Around an inch or 
  less of snow will be possible with isolated 2 inch amounts 
  along the ridges.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

VAZ022>024-122315-
/O.CON.KRNK.WC.Y.0006.171213T0500Z-171213T1400Z/
Roanoke-Botetourt-Rockbridge-
Including the cities of Roanoke, Salem, Fincastle, Lexington, 
and Buena Vista
1005 AM EST Tue Dec 12 2017

...WIND CHILL ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM EST WEDNESDAY...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 15 above zero to 0.

* WHERE...Roanoke, Botetourt and Rockbridge Counties.

* WHEN...From midnight tonight to 9 AM EST Wednesday.

* ADDITIONAL DETAILS...Northwest winds are going to gust at 
  times as high as 45 to 50 mph, especially in the higher 
  elevations. Snow showers may accumulate to an inch or less, 
  especially this evening.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

482 
WWUS41 KRNK 121949
WSWRNK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Blacksburg VA
249 PM EST Tue Dec 12 2017

...Accumulating snow showers through this evening followed by
bitterly cold wind chills overnight...

.Accumulations of upslope snow showers will continue in parts of 
southeastern West Virginia and the mountains of northwestern North
Carolina through tonight. The strong winds and cold temperatures 
later tonight will produce wind chills below zero at times.

NCZ001-018-WVZ042-043-508-130400-
/O.CON.KRNK.WW.Y.0015.000000T0000Z-171213T1200Z/
/O.CON.KRNK.WC.Y.0006.171213T0500Z-171213T1400Z/
Ashe-Watauga-Mercer-Summers-Western Greenbrier-
Including the cities of West Jefferson, Boone, Bluefield, Hinton,
Hix, Quinwood, Duo, and Rainelle
249 PM EST Tue Dec 12 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
WEDNESDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM EST WEDNESDAY...

* WHAT...Snow and blowing snow occurring. Very cold wind chills
  expected. Plan on slippery road conditions, including during the
  evening commute. In addition, areas of poor visibility are
  expected. Additional snow accumulations of 1 to 3 inches are 
  expected. Total snow accumulations of 4-6 inches in western 
  Greenbrier County, 2 to 4 inches in Summers and Mercer counties 
  in southeast West Virginia, and 1 to 3 inches in Ashe and 
  Watauga Counties in northwest North Carolina. Expect wind chills
  to range from 5 above zero to 10 below zero.

* WHERE...In North Carolina, Ashe and Watauga Counties. In West 
  Virginia, Mercer, Summers and Western Greenbrier Counties.

* WHEN...For the Winter Weather Advisory, until 7 AM EST 
  Wednesday. For the Wind Chill Advisory, from midnight tonight 
  to 9 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 50 mph will 
  cause areas of blowing and drifting snow. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow and blowing snow means periods
of snow and blowing snow will cause primarily travel
difficulties. Be prepared for snow covered roads and limited
visibilities, and use caution while driving. The latest road
conditions for the state you are calling from can be obtained by
calling 5 1 1.

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

NCZ002-VAZ007-009>020-WVZ044-507-130400-
/O.CON.KRNK.WC.Y.0006.171213T0500Z-171213T1400Z/
Alleghany NC-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-Montgomery-
Grayson-Carroll-Floyd-Craig-Alleghany VA-Bath-Monroe-
Eastern Greenbrier-
Including the cities of Sparta, Tazewell, Marion, Bland, 
Pearisburg, Wytheville, Radford, Pulaski, Blacksburg, 
Independence, Whitetop, Troutdale, Volney, Galax, Floyd, 
New Castle, Clifton Forge, Covington, Hot Springs, Union, 
Lewisburg, and White Sulphur Springs
249 PM EST Tue Dec 12 2017

...WIND CHILL ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM EST WEDNESDAY...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 5 above zero to 5 below 
  zero.

* WHERE...Portions of southwest and west central Virginia, 
  northwest North Carolina and southeast West Virginia.

* WHEN...From midnight tonight to 9 AM EST Wednesday.

* ADDITIONAL DETAILS...Northwest winds will also be gusting as 
  high as 45 mph, especially this evening. Around an inch or 
  less of snow will be possible with isolated 2 inch amounts 
  along the ridges.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

VAZ022>024-130400-
/O.CON.KRNK.WC.Y.0006.171213T0500Z-171213T1400Z/
Roanoke-Botetourt-Rockbridge-
Including the cities of Roanoke, Salem, Fincastle, Lexington, 
and Buena Vista
249 PM EST Tue Dec 12 2017

...WIND CHILL ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM EST WEDNESDAY...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 10 above zero to 0.

* WHERE...Roanoke, Botetourt and Rockbridge Counties.

* WHEN...From midnight tonight to 9 AM EST Wednesday.

* ADDITIONAL DETAILS...Northwest winds will also be gusting as
  high as 50 mph, especially this evening. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

Loconto

694 
WWUS41 KRNK 130225
WSWRNK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Blacksburg VA
925 PM EST Tue Dec 12 2017

...Accumulating mountain snow showers, pockets of black ice 
tonight, followed by bitterly cold wind chills overnight...

.Accumulations of upslope snow showers will continue in parts of
southeastern West Virginia and the mountains of northwestern
North Carolina through tonight. The strong winds and cold
temperatures overnight will produce wind chills below zero at 
times.

NCZ001-018-WVZ042-043-508-131030-
/O.CON.KRNK.WW.Y.0015.000000T0000Z-171213T1200Z/
/O.CON.KRNK.WC.Y.0006.171213T0500Z-171213T1400Z/
Ashe-Watauga-Mercer-Summers-Western Greenbrier-
Including the cities of West Jefferson, Boone, Bluefield, Hinton,
Hix, Quinwood, Duo, and Rainelle
925 PM EST Tue Dec 12 2017

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST
WEDNESDAY...
...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST
WEDNESDAY...

* WHAT...Snow and blowing snow occurring. Very cold wind chills
  expected. Plan on slippery and icy road conditions. In 
  addition, areas of poor visibility are expected. Additional snow
  accumulations of 1 to 3 inches are expected. Total snow 
  accumulations of 3-5 inches in western Greenbrier County, 2 to 4
  inches in Summers and Mercer counties in southeast West 
  Virginia, and 1 to 3 inches in Ashe and Watauga Counties in 
  northwest North Carolina. Expect wind chills to range from 5 
  above zero to 10 below zero.

* WHERE...In North Carolina, Ashe and Watauga Counties. In West 
  Virginia, Mercer, Summers and Western Greenbrier Counties.

* WHEN...For the Winter Weather Advisory, until 7 AM EST
  Wednesday. For the Wind Chill Advisory, from overnight to 9 AM 
  EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 50 mph will 
  cause areas of blowing and drifting snow. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Winter Weather Advisory for snow means periods of snow will
cause primarily travel difficulties. Be prepared for snow covered
roads and limited visibilities, and use caution while driving.
The latest road conditions for the state you are calling from can
be obtained by calling 5 1 1.

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

NCZ002-VAZ007-009>020-WVZ044-507-131030-
/O.CON.KRNK.WC.Y.0006.171213T0500Z-171213T1400Z/
Alleghany NC-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-Montgomery-
Grayson-Carroll-Floyd-Craig-Alleghany VA-Bath-Monroe-
Eastern Greenbrier-
Including the cities of Sparta, Tazewell, Marion, Bland, 
Pearisburg, Wytheville, Radford, Pulaski, Blacksburg, 
Independence, Whitetop, Troutdale, Volney, Galax, Floyd, 
New Castle, Clifton Forge, Covington, Hot Springs, Union, 
Lewisburg, and White Sulphur Springs
925 PM EST Tue Dec 12 2017

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST
WEDNESDAY...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 5 above zero to 5 below 
  zero.

* WHERE...Portions of southwest and west central Virginia, 
  northwest North Carolina and southeast West Virginia.

* WHEN...overnight to 9 AM EST Wednesday.

* ADDITIONAL DETAILS...Northwest winds will also be gusting as
  high as 45 mph. Patches of black ice possible. Snow showers 
  expected with around an inch of snow possible with isolated 
  amounts near 2 inches along the ridges.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

VAZ022>024-131030-
/O.CON.KRNK.WC.Y.0006.171213T0500Z-171213T1400Z/
Roanoke-Botetourt-Rockbridge-
Including the cities of Roanoke, Salem, Fincastle, Lexington, 
and Buena Vista
925 PM EST Tue Dec 12 2017

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST
WEDNESDAY...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 10 above zero to 0.

* WHERE...Roanoke, Botetourt and Rockbridge Counties.

* WHEN...overnight to 9 AM EST Wednesday.

* ADDITIONAL DETAILS...Northwest winds will also be gusting as
  high as 50 mph.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

517 
WWUS41 KRNK 130807
WSWRNK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Blacksburg VA
307 AM EST Wed Dec 13 2017

...Bitterly cold wind chills this morning...

.The strong winds and cold temperatures this morning will produce
wind chills below zero at times. Also watch out for snow covered
and icy roads where snow showers occurred yesterday evening.     

NCZ001-018-WVZ042-043-508-131400-
/O.CAN.KRNK.WW.Y.0015.000000T0000Z-171213T1200Z/
/O.CON.KRNK.WC.Y.0006.000000T0000Z-171213T1400Z/
Ashe-Watauga-Mercer-Summers-Western Greenbrier-
Including the cities of
West Jefferson, Boone, Bluefield, Hinton, Hix, Quinwood, Duo, and
Rainelle
307 AM EST Wed Dec 13 2017

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS
MORNING...
...WINTER WEATHER ADVISORY for accumulating snow IS CANCELLED...

* WHAT...Very cold wind chills. Expect wind chills to range from 
  5 above zero to 10 below zero.

* WHERE...The high country of North Carolina, and into
  far southwestern Virginia and southeast West Virginia. 

* WHEN...Through 9 AM EST Wednesday.

* ADDITIONAL DETAILS...Winds gusting as high as 50 mph will cause
  areas of blowing and drifting snow. The cold wind chills will 
  cause frostbite in as little as 30 minutes to exposed skin.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

NCZ002-VAZ007-009>020-WVZ044-507-131400-
/O.CON.KRNK.WC.Y.0006.000000T0000Z-171213T1400Z/
Alleghany NC-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-Montgomery-
Grayson-Carroll-Floyd-Craig-Alleghany VA-Bath-Monroe-
Eastern Greenbrier-
Including the cities of Sparta, Tazewell, Marion, Bland, 
Pearisburg, Wytheville, Radford, Pulaski, Blacksburg, 
Independence, Whitetop, Troutdale, Volney, Galax, Floyd, 
New Castle, Clifton Forge, Covington, Hot Springs, Union, 
Lewisburg, and White Sulphur Springs
307 AM EST Wed Dec 13 2017

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS
MORNING...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 5 above zero to 5 below 
  zero.

* WHERE...Portions of southwest and west central Virginia, 
  northwest North Carolina and southeast West Virginia.

* WHEN...through 9 AM EST Wednesday.

* ADDITIONAL DETAILS...Northwest winds will also be gusting as
  high as 40 mph. Patches of black ice possible. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

VAZ022>024-131400-
/O.CON.KRNK.WC.Y.0006.000000T0000Z-171213T1400Z/
Roanoke-Botetourt-Rockbridge-
Including the cities of Roanoke, Salem, Fincastle, Lexington, 
and Buena Vista
307 AM EST Wed Dec 13 2017

...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS
MORNING...

* WHAT...Very cold wind chills expected. The cold wind chills 
  will cause frostbite in as little as 30 minutes to exposed 
  skin. Expect wind chills to range from 10 above zero to 0.

* WHERE...Roanoke and Southern Shenandoah Valleys.

* WHEN...through 9 AM EST Wednesday.

* ADDITIONAL DETAILS...Northwest winds will also be gusting as
  high as 40 mph.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Chill Advisory means that cold air and the wind will
combine to create low wind chills. Frost bite and hypothermia can
occur if precautions are not taken. Make sure you wear a hat and
gloves.

$$

455 
WWUS41 KRNK 131347
WSWRNK

URGENT - WINTER WEATHER MESSAGE
National Weather Service Blacksburg VA
847 AM EST Wed Dec 13 2017

...Wind Chill Advisory cancelled...

.Temperatures have begun to slowly climb, resulting in wind chills
rising above Advisory thresholds. The Wind Advisory will be
cancelled. 

NCZ001-002-018-VAZ007-009>020-022>024-WVZ042>044-507-508-131500-
/O.CAN.KRNK.WC.Y.0006.000000T0000Z-171213T1400Z/
Ashe-Alleghany NC-Watauga-Tazewell-Smyth-Bland-Giles-Wythe-
Pulaski-Montgomery-Grayson-Carroll-Floyd-Craig-Alleghany VA-Bath-
Roanoke-Botetourt-Rockbridge-Mercer-Summers-Monroe-
Eastern Greenbrier-Western Greenbrier-
847 AM EST Wed Dec 13 2017

...WIND CHILL ADVISORY IS CANCELLED...

Lowest wind chills this morning have rose above Advisory
thresholds, though they are still quite cold. With sunshine now 
warming temperatures, the Wind Chill Advisory is cancelled.

$$

Area Forecast Discussion
National Weather Service Blacksburg VA
1227 AM EST Tue Dec 12 2017

.SYNOPSIS...
High pressure remains in control through tonight. An Alberta Clipper
system will pass over the region on Tuesday, ushering in periods of
snow and blowing snow, cold temperatures, and gusty northwest
winds through Tuesday night. Chilly but dry conditions return
for Wednesday before temperatures begin to slowly moderate on
Thursday. Another surge of cold Arctic air is expected by
Friday.

&&

.NEAR TERM /THROUGH TODAY/...
As if 1045 PM EST Monday...

T/Td readings are so far pretty much on track. Some minor
changes were needed in areas such as LWB, where decoupling has
allowed strong radiational cooling.

Delayed the arrival of snow showers a bit per latest
NamNest/HRRR, which show very little arriving much before 12Z.
Currently, only some very light echoes showing up on radar in
central WV, with slightly more solid activity in the northern
part of the state. However, latest observations are all CLR BLO
120, so it does not appear that any of this is yet reaching the
ground.

As of 319 PM EST Monday...

Modest warm advection regime underway across the Appalachians
into the central mid-Atlantic region, ahead of a potent Alberta
Clipper system and lead parent mid- level trough. Another
shortwave is evident in water vapor imagery north of the Great
Lakes associated with a strong shot of Arctic air. Each of these
features will go to produce a period of wintry weather, cold
temperatures and gusty northwest winds, especially along and
west of the Blue Ridge Tuesday.

Several hazard headlines have been issued with this package. Winter
Weather Advisories have been hoisted for western Greenbrier County
in West Virginia, and in Ashe and Watauga County in western North
Carolina for accumulating snow and low wind chills (low wind
chills primarily for Tuesday night). A Wind Advisory has also
been hoisted along the southern Blue Ridge from Roanoke down to
Boone. Each of these products run until 12z Wednesday.

Quiet weather anticipated for the first part of the evening. Will
start to build clouds in progressively with time from the west
as the clipper system approaches. Should see increasing chances
for snow showers into the pre-dawn hours of Tuesday from the
mountains of NC northward into the central Appalachians and into
western Greenbrier County. Low temperatures tonight should be
in the mid 20s to near freezing.

Guidance generally agrees on Arctic frontal passage tied to the
clipper system from 12-16z Tuesday. By most indications, it should
be a well defined and strong cold frontal passage as indicated in
simulated reflectivity progs. Noticed on the NAM-12km that steep low-
level lapse rates, CAPEs of 50-100 J/kg and Snow Squall Parameter
values > 1 unit support an environment conducive to short-duration
snow squalls with the Arctic frontal passage, especially along the I-
81 and I-77 corridors during the morning commute. As the air mass
behind the front is cold, snow in western counties should be powdery
in nature with snow-to-liquid ratios likely greater than 16:1.
Pattern then transitions to one of typical northwest flow snow
setups, with a Great Lakes moisture connection to Lake Michigan
indicated in the higher-resolution NWP. I've left open the
possibility for light accumulating snow to make it into the New
River and Roanoke Valley, but the most persistent snows will be
confined to the NC Mountains and in southeast West Virginia
(particularly in western Greenbrier County). Including continuing
snows for tomorrow night, forecast accumulations run from 3-5" in
western Greenbrier County, 1-4" across the rest of southeast West
Virginia, 1-3" in Ashe and Watauga Counties in NC, and a coating to
an inch in more intermittent snow showers roughly along the I-81
corridor. Specific to winds, these will tend to peak immediately
behind the frontal passage. While breezy conditions will exist in
most locations west of the Blue Ridge, the strongest winds capable
of causing minor damage appears more likely along the southern Blue
Ridge with gusts up to 55 mph possible. With the powdery nature of
the snowfall and breezy conditions, this will lead to periods of
blowing/drifting snow. For temperatures Tuesday, opted for a non-
diurnal temperature trend with early high temperatures in the 30s to
mid 40s before sharply falling to the mid 20s to upper 30s by late
afternoon under strong cold advection.

&&

.SHORT TERM /TONIGHT THROUGH THURSDAY/...
As of 319 PM EST Monday...

Strong cold advection will persist Tuesday night as the center of
the cold pocket aloft passes to the north. This should continue to
provide a favorable fetch of upslope driven moisture to result in
bands of snow showers overnight espcly western slopes but also with
some possible spillover out to the Blue Ridge per strength of the
jet. Expect coverage to slowly fade later Tuesday night as soundings
show moisture depth decreasing but still likely another 1-3 inches
far northwest slopes to an inch elsewhere with only light
accumulations farther east. Strong northwest winds will also still
be an issue with another round of subsidence overnight when the
coldest 850 mb air should be helping lower the inversion. Therefore
will need to keep or expand going wind headlines into early
Wednesday morning at this point. This combined with lows in the
teens to around 20 likely to spell wind chill issues from the
foothills west so keeping mention in the HWO for now. Otherwise
should see clearing take shape out east Tuesday night and
elsewhere by Wednesday with this lingering into Wednesday night.

Next weak clipper will then arrive from the west late Wednesday
night and moreso Thursday as this impulse shears east and offshore
Thursday afternoon. System appears lacking moisture per lack of
digging so only including more clouds and slight pops northwest late
Wednesday night and mainly low chance pops Thursday before lift
gives way to weak upslope. Otherwise more clouds north and less
south with highs 30s north to 40s south.

&&

.LONG TERM /THURSDAY NIGHT THROUGH MONDAY/...
As of 319 PM EST Monday...

Upper flow will again undergo a quick transition from zonal flow to
start Thursday night back to a deeper eastern trough regime on
Friday before again flattening over the weekend into early next week.
This in response to development of split flow ahead of the last in a
series of digging clipper systems that will attempt to phase with
energy dropping out of the Rockies. However latest models show quite
a spread with this system, from basically dry with a split between
the clipper passing farther north and low pressure offshore, to
somewhat better linkage with low pressure closer to the Carolinas
and thus at least some light precip per the GFS. Boundary layer
appears rather marginal for snow outside of the mountains but could
arrive early Friday so something to watch. Otherwise will include
some low rain/snow pops on Friday most sections for now.

Lingering upslope snow showers again likely Friday night before
heights build allowing for some temperature moderation on Saturday
under warmer westerly flow which should push most into the 40s. This
in advance of yet another system swinging northeast out of the
southern plains that will link with the next upstream cold front and
bring rain showers into the area late Sunday into Monday before
colder drier air follows later on Day 7. Appears most precip
will be liquid given warming aloft ahead of the system Sunday
night with only perhaps some snow showers at the end far west
Monday morning.

&&

.AVIATION /05Z TUESDAY THROUGH SATURDAY/...
As of 1215 AM EST Tuesday...

VFR conditions will continue for a few more hours through the
evening and likely until around 08Z or 10Z. Ceilings will
lower from west to east during the overnight as a strong
clipper system approaches from the northwest. For much of the
night east of the Blue Ridge it will remain VFR. Ahead of this
clipper, winds are expected to be mostly SSE- SSW 4-8kts.

As the Alberta Clipper moves into the region early Tuesday,
expect periods of mostly MVFR-IFR ceilings and MVFR visibilities
in -SHSN are expected west of the Blue Ridge, with VFR
conditions continuing to the east of the Blue ridge. A snow
begins to accumulate in the west, some locations such as KBLF,
may see BLSN even after the snow ends, thus reducing visibility
into the MVFR category. The most likely area for SHSN will be
across the mountains from SE WV and SW VA into northwest NC. May
see a period of short duration snow squalls associated with the
Arctic frontal passage between 11-14z at KBLF, KLWB and perhaps
even KBCB. Gusty post frontal winds are expected as the strong
clipper moves east of the area. Look for WSW-WNW sustained winds
of 10-15 kts with gusts up to 30 kts at KROA, with even
stronger winds possible at higher mountain peaks west of the
Blue Ridge. Winds will not decrease much until late on Tuesday
night into Wednesday morning.

Medium to high confidence in ceilings throughout the TAF valid
period.
Medium to high confidence in visibilities throughout the TAF
valid period.
Medium to high confidence in wind speed/direction throughout the
TAF valid period.

Extended Discussion...

Weak high pressure builds in Wednesday followed by another
weaker clipper Thursday that passes by mostly to our north.
Another more significant clipper system will arrive by Friday
into Saturday, with gusty winds and mountain showers, thus the
potential for periods of sub-VFR conditions.

&&

.RNK WATCHES/WARNINGS/ADVISORIES...
VA...Wind Advisory from 4 AM early this morning to 7 AM EST
     Wednesday for VAZ015>017-022.
NC...Wind Advisory from 4 AM early this morning to 7 AM EST
     Wednesday for NCZ001-002-018.
     Winter Weather Advisory from 4 AM early this morning to 7 AM
     EST Wednesday for NCZ001-018.
WV...Winter Weather Advisory from 7 AM this morning to 7 AM EST
     Wednesday for WVZ508.

&&

SYNOPSIS...AL
NEAR TERM...AL/RAB
SHORT TERM...JH
LONG TERM...JH
AVIATION...RAB

Hazardous Weather Outlook
National Weather Service Blacksburg VA
255 PM EST Mon Dec 11 2017

WVZ508-122000-
Western Greenbrier-
255 PM EST Mon Dec 11 2017

...WINTER WEATHER ADVISORY IN EFFECT FROM 7 AM TUESDAY TO 7 AM EST
WEDNESDAY...

This Hazardous Weather Outlook is for southeast West Virginia.

.DAY ONE...This afternoon and tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Weather Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

WVZ042>044-507-122000-
Mercer-Summers-Monroe-Eastern Greenbrier-
255 PM EST Mon Dec 11 2017

This Hazardous Weather Outlook is for southeast West Virginia.

.DAY ONE...This afternoon and tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Sub-zero wind chills are possible Tuesday night into Wednesday
morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

VAZ007-009>014-018>020-122000-
Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-Montgomery-Craig-
Alleghany VA-Bath-
255 PM EST Mon Dec 11 2017

This Hazardous Weather Outlook is for southwest Virginia and west
central Virginia.

.DAY ONE...This afternoon and tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Northwest winds could gust over 45 mph Tuesday into Tuesday night.

Sub-zero wind chills are also possible Tuesday night into Wednesday
morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ003-019-VAZ023-024-032>035-122000-
Surry-Wilkes-Botetourt-Rockbridge-Patrick-Franklin-Bedford-Amherst-
255 PM EST Mon Dec 11 2017

This Hazardous Weather Outlook is for north central North Carolina,
northwest North Carolina, central Virginia, south central Virginia,
southwest Virginia and west central Virginia.

.DAY ONE...This afternoon and tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Northwest winds could gust to around 45 mph Tuesday into Tuesday
night. Wind chills could drop to zero by Wednesday morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ004>006-020-VAZ043>047-058-059-122000-
Stokes-Rockingham-Caswell-Yadkin-Henry-Pittsylvania-Campbell-
Appomattox-Buckingham-Halifax-Charlotte-
255 PM EST Mon Dec 11 2017

This Hazardous Weather Outlook is for north central North Carolina,
northwest North Carolina, central Virginia and south central
Virginia.

.DAY ONE...This afternoon and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ001-018-122000-
Ashe-Watauga-
255 PM EST Mon Dec 11 2017

...WIND ADVISORY IN EFFECT FROM 4 AM TUESDAY TO 7 AM EST WEDNESDAY...
...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TUESDAY TO 7 AM EST
WEDNESDAY...

This Hazardous Weather Outlook is for northwest North Carolina.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Weather Advisory.
   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Winter Weather Advisory.
   Wind Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ002-VAZ015>017-022-122000-
Alleghany NC-Grayson-Carroll-Floyd-Roanoke-
255 PM EST Mon Dec 11 2017

...WIND ADVISORY IN EFFECT FROM 4 AM TUESDAY TO 7 AM EST WEDNESDAY...

This Hazardous Weather Outlook is for northwest North Carolina,
southwest Virginia and west central Virginia.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Wind Advisory.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Wind Advisory.

Sub-zero wind chills are also possible Tuesday night into Wednesday
morning.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.