Alert archive / North Carolina / Wind Advisories in 2016

Wind Advisory 16, NWS Blacksburg, VA

December 15, 2016Grayson County, Virginia; Ashe County, Watauga County, North Carolina

NWS Blacksburg, VA issued this wind advisory at Dec 15, 2016, 12:08 PM EST for Grayson County, Virginia; Ashe County, Watauga County, North Carolina. It was in force for 112 min.

The area

The counties it named.

The facts

Issued
Dec 15, 2016, 12:08 PM EST (17:08 UTC)
Expired
Dec 15, 2016, 2:00 PM EST
In force
112 min
Issued by
NWS Blacksburg, VA

Counties Ashe County, NC, Watauga County, NC, Grayson County, VA

The radar

The Roanoke radar (KFCX), 125 km from the middle of the area, began a volume at 17:13 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 12:00Z, 5.1 hours before the alert went out and 147 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 12:00Z on 2016-12-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2016-12-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 square meters per square second.1939587897117136156Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1263 m above ground
0-6 km bulk shear
111 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
160 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

481 
WWUS71 KRNK 151708
NPWRNK

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BLACKSBURG VA
1208 PM EST THU DEC 15 2016

...GUSTY WINDS WILL GRADUALLY DECREASE THIS AFTERNOON...

.WINDS WILL REMAIN GUSTY AS ARCTIC HIGH PRESSURE CONTINUES TO
SURGE INTO THE APPALACHIANS AND CENTRAL MID ATLANTIC REGION.
CONDITIONS WILL REMAIN QUITE GUSTY THROUGH EARLY THIS
AFTERNOON...ESPECIALLY AT THE HIGHER ELEVATIONS...BEFORE WINDS
GRADUALLY SUBSIDE LATER IN THE DAY.

NCZ001-018-VAZ015-151900-
/O.EXP.KRNK.WI.Y.0015.000000T0000Z-161215T1700Z/
/O.NEW.KRNK.WI.Y.0016.161215T1708Z-161215T1900Z/
ASHE-WATAUGA-GRAYSON-
INCLUDING THE CITIES OF...WEST JEFFERSON...BOONE...INDEPENDENCE...
WHITETOP...TROUTDALE...VOLNEY
1208 PM EST THU DEC 15 2016

...WIND ADVISORY REMAINS IN EFFECT UNTIL 2 PM EST THIS
AFTERNOON...

* LOCATIONS...THE MOUNTAINS OF NORTH CAROLINA THROUGH THE GRAYSON
  HIGHLANDS IN VIRGINIA...MAINLY ABOVE 3500 FEET.

* HAZARDS...STRONG GUSTY NORTHWEST WINDS.

* WINDS...NORTHWEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH AT
  TIMES...BEFORE GRADUALLY SUBSIDING

* TIMING...THROUGH EARLY THIS AFTERNOON.

* IMPACTS...SMALL TREE LIMBS MAY BE BLOWN DOWN. WIND CHILLS WILL 
  BE 5 ABOVE TO 5 BELOW ZERO THIS MORNING.

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.

&&

$$

NCZ002-VAZ010>014-016>020-022>024-151815-
/O.EXP.KRNK.WI.Y.0015.000000T0000Z-161215T1700Z/
ALLEGHANY NC-BLAND-GILES-WYTHE-PULASKI-MONTGOMERY-CARROLL-FLOYD-
CRAIG-ALLEGHANY VA-BATH-ROANOKE-BOTETOURT-ROCKBRIDGE-
INCLUDING THE CITIES OF...SPARTA...BLAND...PEARISBURG...
WYTHEVILLE...RADFORD...PULASKI...BLACKSBURG...GALAX...FLOYD...
NEW CASTLE...CLIFTON FORGE...COVINGTON...HOT SPRINGS...ROANOKE...
SALEM...FINCASTLE...LEXINGTON...BUENA VISTA
1208 PM EST THU DEC 15 2016

...WIND ADVISORY HAS EXPIRED...

WHILE WINDS WILL REMAIN QUITE GUSTY THROUGH THIS AFTERNOON...WIND
SPEEDS WILL CONTINUE TO DECREASE AND ARE NO LONGER EXPECTED TO
EXCEED 45MPH .

$$

MBS
1 follow-up statement
148 
WWUS71 KRNK 151903
NPWRNK

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BLACKSBURG VA
203 PM EST THU DEC 15 2016

NCZ001-018-VAZ015-152015-
/O.EXP.KRNK.WI.Y.0016.000000T0000Z-161215T1900Z/
ASHE-WATAUGA-GRAYSON-
INCLUDING THE CITIES OF...WEST JEFFERSON...BOONE...INDEPENDENCE...
WHITETOP...TROUTDALE...VOLNEY
203 PM EST THU DEC 15 2016

...WIND ADVISORY HAS EXPIRED...

WHILE WINDS WILL REMAIN GUSTY THROUGH THIS AFTERNOON...WIND
SPEEDS WILL CONTINUE TO DECREASE AND ARE NO LONGER EXPECTED TO
EXCEED 45MPH .

$$

MBS

Nearby

Wind Advisories in North Carolina, 2016Wind Advisories in Virginia, 2016Every wind advisory in 2016

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.