Alert archive / Virginia / Wind Advisories in 2017

Wind Advisory 4, NWS Blacksburg, VA

February 8, 2017Alleghany County, Ashe County, Watauga County, North Carolina; 7 counties in Virginia

NWS Blacksburg, VA issued this wind advisory at Feb 8, 2017, 4:35 AM EST for Alleghany County, Ashe County, Watauga County, North Carolina; 7 counties in Virginia. It took effect at Feb 9, 2017, 7:00 AM EST. It was in force for .

The area

The counties it named.

The facts

Issued
Feb 8, 2017, 4:35 AM EST (09:35 UTC)
In effect from
Feb 9, 2017, 7:00 AM EST
Expired
Feb 8, 2017, 3:29 PM EST
In force
Issued by
NWS Blacksburg, VA

Counties Alleghany County, NC, Ashe County, NC, Watauga County, NC, Carroll County, VA, City of Galax, VA, City of Roanoke, VA, City of Salem, VA, Floyd County, VA, Grayson County, VA, Roanoke County, VA

The radar

The Roanoke radar (KFCX), 50 km from the middle of the area, began a volume at 09:37 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 9.6 hours before the alert went out and 110 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 00:00Z on 2017-02-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 6 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 00:00Z on 2017-02-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
6 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1395 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
176 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

523 
WWUS71 KRNK 080935
NPWRNK

URGENT - WEATHER MESSAGE
National Weather Service Blacksburg VA
435 AM EST Wed Feb 8 2017

...Strong winds expected on Thursday...

.Strong, gusty northwest winds are expected to develop as a storm
system exits the region early Thursday. Strongest winds are
expected from mid morning into the afternoon as mostly sunny skies
and cold temperatures aloft support frequent gusts. Winds subside
late Thursday afternoon into early evening as pressure gradient
relaxes. 

NCZ001-002-018-VAZ015>017-022-081730-
/O.NEW.KRNK.WI.Y.0004.170209T1200Z-170210T0000Z/
Ashe-Alleghany NC-Watauga-Grayson-Carroll-Floyd-Roanoke-
Including the cities of West Jefferson, Sparta, Boone, 
Independence, Whitetop, Troutdale, Volney, Galax, Floyd, Roanoke,
and Salem
435 AM EST Wed Feb 8 2017

...WIND ADVISORY IN EFFECT FROM 7 AM TO 7 PM EST THURSDAY...

The National Weather Service in Blacksburg has issued a Wind
Advisory...which is in effect from 7 AM to 7 PM EST Thursday.

* Locations...The spine of the Blue Ridge from Roanoke, VA to
  Boone, NC. 

* Hazards...Strong, gusty northwest winds.

* Winds...Northwest 20 to 30 mph with gusts up to 55 mph.

* Timing...Gusty winds begin to develop by early morning Thursday,
  with the strongest wind gusts expected from mid-morning into the
  afternoon. Wind gusts then lower by early evening Thursday. 

* Impacts...Minor property damage and isolated power outages are
  possible. Tree limbs may be blown down. Travel may be difficult
  for high profile vehicles. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory is issued when sustained winds are forecast to be
31 to 39 MPH or gusts will range between 46 and 57 MPH. Winds of
these magnitudes may cause minor property damage without extra
precautions. Motorists in high profile vehicles should use extra
caution until the winds subside.

&&

$$

Loconto
2 follow-up statements
735 
WWUS71 KRNK 081532
NPWRNK

URGENT - WEATHER MESSAGE
National Weather Service Blacksburg VA
1032 AM EST Wed Feb 8 2017

...Strong winds expected on Thursday...

.Strong, gusty northwest winds are expected to develop as a storm
system exits the region early Thursday. Strongest winds are
expected from mid morning into the afternoon as mostly sunny
skies and cold temperatures aloft support frequent gusts. Winds
subside late Thursday afternoon into early evening as pressure
gradient relaxes.

NCZ001-002-018-VAZ015>017-022-082345-
/O.CON.KRNK.WI.Y.0004.170209T1200Z-170210T0000Z/
Ashe-Alleghany NC-Watauga-Grayson-Carroll-Floyd-Roanoke-
Including the cities of West Jefferson, Sparta, Boone, 
Independence, Whitetop, Troutdale, Volney, Galax, Floyd, Roanoke,
and Salem
1032 AM EST Wed Feb 8 2017

...WIND ADVISORY REMAINS IN EFFECT FROM 7 AM TO 7 PM EST
THURSDAY...

* Locations...The spine of the Blue Ridge from Roanoke, VA to 
  Boone, NC.

* Hazards...Strong, gusty northwest winds.

* Winds...Northwest 20 to 30 mph with gusts up to 55 mph.

* Timing...Gusty winds begin to develop by early morning Thursday,
  with the strongest wind gusts expected from mid-morning into 
  the afternoon. Wind gusts will then lower by early evening 
  Thursday.

* Impacts...Minor property damage and isolated power outages are 
  possible. Tree limbs may be blown down. Travel may be 
  difficult for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory is issued when sustained winds are forecast to be
31 to 39 MPH or gusts will range between 46 and 57 MPH. Winds of
these magnitudes may cause minor property damage without extra
precautions. Motorists in high profile vehicles should use extra
caution until the winds subside.

&&

$$
606 
WWUS71 KRNK 082029
NPWRNK

URGENT - WEATHER MESSAGE
National Weather Service Blacksburg VA
329 PM EST Wed Feb 8 2017

...Strong winds expected on Thursday...

.Strong, gusty northwest winds are expected to develop as a storm
system exits the region early Thursday. Strongest winds are
expected from early morning into the afternoon as decreasing cloud
cover and cold temperatures aloft support frequent gusts. Winds
will gradually subside Thursday evening as the pressure gradient
slowly relaxes.

NCZ001-002-018-VAZ015>017-022-090430-
/O.UPG.KRNK.WI.Y.0004.170209T1200Z-170210T0000Z/
/O.NEW.KRNK.HW.W.0001.170209T0900Z-170210T0500Z/
Ashe-Alleghany NC-Watauga-Grayson-Carroll-Floyd-Roanoke-
Including the cities of West Jefferson, Sparta, Boone, 
Independence, Whitetop, Troutdale, Volney, Galax, Floyd, Roanoke,
and Salem
329 PM EST Wed Feb 8 2017

...HIGH WIND WARNING IN EFFECT FROM 4 AM THURSDAY TO MIDNIGHT EST
THURSDAY NIGHT...

The National Weather Service in Blacksburg has issued a High Wind
Warning...which is in effect from 4 AM Thursday to midnight EST
Thursday night. The Wind Advisory is no longer in effect.

* Locations...The spine of the Blue Ridge from Roanoke, VA to 
  Boone, NC.

* Hazards...Potentially damaging northwest winds.

* Winds...Northwest 25 to 35 mph with gusts up to 60 mph.

* Timing...Gusty winds will begin to develop by early morning
  Thursday, with the strongest wind gusts expected from mid-
  morning into the afternoon. Wind gusts will then gradually lower
  during the evening Thursday.

* Impacts...Some property damage and power outages are possible.
  Trees or large tree limbs may be blown down. Travel may be very
  difficult for high profile vehicles, especially those traveling
  on southwest to northeast oriented roads.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Warning means a hazardous high wind event is expected
or occurring. Sustained wind speeds of at least 40 mph or gusts
of 58 mph are likely to cause power outages...fallen trees...
property damage...and dangerous driving conditions for high
profile vehicles. Move unfastened items...such as garbage cans
and deck furniture...indoors.

&&

$$

NCZ003-019-VAZ009>014-018>020-023-024-032>035-090430-
/O.NEW.KRNK.WI.Y.0005.170209T0900Z-170210T0500Z/
Surry-Wilkes-Smyth-Bland-Giles-Wythe-Pulaski-Montgomery-Craig-
Alleghany VA-Bath-Botetourt-Rockbridge-Patrick-Franklin-Bedford-
Amherst-
Including the cities of Dobson, Wilkesboro, Marion, Bland, 
Pearisburg, Wytheville, Radford, Pulaski, Blacksburg, New Castle,
Clifton Forge, Covington, Hot Springs, Fincastle, Lexington, 
Buena Vista, Stuart, Rocky Mount, Bedford, and Amherst
329 PM EST Wed Feb 8 2017

...WIND ADVISORY IN EFFECT FROM 4 AM THURSDAY TO MIDNIGHT EST
THURSDAY NIGHT...

The National Weather Service in Blacksburg has issued a Wind
Advisory...which is in effect from 4 AM Thursday to midnight EST
Thursday night.

* Locations...Portions of the New River Valley into the Alleghany
  Highlands, as well as the foothills along the Blue Ridge.

* Hazards...Strong, gusty northwest winds.

* Winds...Northwest 20 to 30 mph with gusts up to 55 mph.

* Timing...Gusty winds will begin to develop by early morning
  Thursday, with the strongest wind gusts expected from mid-
  morning into the afternoon. Wind gusts will then gradually lower
  during the evening Thursday.

* Impacts...Minor property damage and isolated power outages are 
  possible. Tree limbs may be blown down. Travel may be 
  difficult for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory is issued when sustained winds are forecast to be
31 to 39 MPH or gusts will range between 46 and 57 MPH. Winds of
these magnitudes may cause minor property damage without extra
precautions. Motorists in high profile vehicles should use extra
caution until the winds subside.

&&

$$

The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 8, 3:29 PM ESTHigh Wind WarningRNKAlleghany, Ashe, Watauga24 hr
Feb 8, 3:29 PM ESTWind AdvisoryRNKAlleghany, Ashe, Surry, Watauga, Wilkes33 hr

Nearby

Wind Advisories in Virginia, 2017Wind Advisories in North Carolina, 2017Every wind advisory in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.