Alert archive / North Carolina / Wind Advisories in 2016

Wind Advisory 4, NWS Blacksburg, VA

February 4, 2016Alleghany County, Ashe County, Watauga County, North Carolina; Grayson County, Virginia

NWS Blacksburg, VA issued this wind advisory at Feb 4, 2016, 5:35 PM EST for Alleghany County, Ashe County, Watauga County, North Carolina; Grayson County, Virginia. It took effect at Feb 4, 2016, 11:00 PM EST. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued
Feb 4, 2016, 5:35 PM EST (22:35 UTC)
In effect from
Feb 4, 2016, 11:00 PM EST
Expired
Feb 5, 2016, 10:00 AM EST
In force
11 hr
Issued by
NWS Blacksburg, VA

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

The radar

The Roanoke radar (KFCX), 118 km from the middle of the area, began a volume at 22:41 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, 10.6 hours before the alert went out and 140 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 2016-02-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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 2016-02-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 square meters per square second.1939587897117136Sfc1 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
705 m above ground
0-6 km bulk shear
79 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
246 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

388 
WWUS71 KRNK 042235
NPWRNK

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BLACKSBURG VA
535 PM EST THU FEB 4 2016

...BECOMING VERY WINDY OVERNIGHT...

.LOW PRESSURE DEVELOPING OFF THE SOUTHEAST COAST WILL ENHANCE LOW
LEVEL WINDS TONIGHT. THIS WILL CREATE VERY WINDY CONDITIONS WITH
GUSTS OF 40 MPH TO 50 MPH POSSIBLE ESPECIALLY AT THE HIGHER
ELEVATIONS.

NCZ001-002-018-VAZ015-051500-
/O.NEW.KRNK.WI.Y.0004.160205T0400Z-160205T1500Z/
ASHE-ALLEGHANY NC-WATAUGA-GRAYSON-
INCLUDING THE CITIES OF...WEST JEFFERSON...SPARTA...BOONE...
INDEPENDENCE...WHITETOP...TROUTDALE...VOLNEY
535 PM EST THU FEB 4 2016

...WIND ADVISORY IN EFFECT FROM 11 PM THIS EVENING TO 10 AM EST
FRIDAY...

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT FROM 11 PM THIS EVENING TO 10 AM
EST FRIDAY.

* LOCATIONS...NORTHWEST MOUNTAINS OF NORTH CAROLINA AND GRAYSON
  HIGHLANDS OF VIRGINIA.

* HAZARDS...GUSTY NORTHWEST WINDS.

* WINDS...NORTHWEST 20 TO 30 MPH WITH GUSTS UP TO 40 MPH TO 50
  MPH.

* TIMING...LATE TONIGHT THROUGH FRIDAY MORNING.

* IMPACTS...SMALL TREES AND BRANCHES MAY BE BLOWN DOWN...AND SOME
  MAY FALL ON POWER LINES AND POSSIBLY CAUSE ISOLATED POWER
  OUTAGES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS SUSTAINED WINDS OF 31 TO 39 MPH...OR WIND
GUSTS OF 46 TO 57 MPH...ARE EXPECTED. WINDS THIS STRONG WILL
LIKELY CAUSE SPORADIC POWER OUTAGES AND CAN MAKE DRIVING
DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. UNFASTENED
ITEMS SUCH AS GARBAGE CANS AND LAWN FURNITURE SHOULD BE MOVED
INDOORS.

&&

$$

MBS
2 follow-up statements
735 
WWUS71 KRNK 050912
NPWRNK

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BLACKSBURG VA
412 AM EST FRI FEB 5 2016

...STRONG WIND GUSTS THROUGH MID MORNING...

.LOW PRESSURE DEVELOPING OFF THE SOUTHEAST COAST WILL ENHANCE LOW
LEVEL WINDS THROUGH MID MORNING. 

NCZ001-002-018-VAZ015-051500-
/O.CON.KRNK.WI.Y.0004.000000T0000Z-160205T1500Z/
ASHE-ALLEGHANY NC-WATAUGA-GRAYSON-
INCLUDING THE CITIES OF...WEST JEFFERSON...SPARTA...BOONE...
INDEPENDENCE...WHITETOP...TROUTDALE...VOLNEY
412 AM EST FRI FEB 5 2016

...WIND ADVISORY REMAINS IN EFFECT UNTIL 10 AM EST THIS MORNING...

* LOCATIONS...NORTH CAROLINA HIGH COUNTRY INTO GRAYSON COUNTY
  VIRGINIA.

* HAZARDS...GUSTY NORTHWEST WINDS.

* WINDS...NORTHWEST 15 TO 25 MPH WITH GUSTS UP TO 50 MPH.

* TIMING...UNTIL 10 AM TODAY.

* IMPACTS...SMALL TREES AND BRANCHES MAY BE BLOWN DOWN...AND SOME
  MAY FALL ON POWER LINES POSSIBLY CAUSING POWER OUTAGES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS SUSTAINED WINDS OF 31 TO 39 MPH...OR WIND
GUSTS OF 46 TO 57 MPH...ARE EXPECTED. WINDS THIS STRONG WILL
LIKELY CAUSE SPORADIC POWER OUTAGES AND CAN MAKE DRIVING
DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. UNFASTENED
ITEMS SUCH AS GARBAGE CANS AND LAWN FURNITURE SHOULD BE MOVED
INDOORS.



&&

$$
853 
WWUS71 KRNK 051434
NPWRNK

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BLACKSBURG VA
934 AM EST FRI FEB 5 2016

...NORTHWEST WINDS TO SLOWLY DIMINISH THROUGH THE AFTERNOON...

NCZ001-002-018-VAZ015-051545-
/O.EXP.KRNK.WI.Y.0004.000000T0000Z-160205T1500Z/
ASHE-ALLEGHANY NC-WATAUGA-GRAYSON-
INCLUDING THE CITIES OF...WEST JEFFERSON...SPARTA...BOONE...
INDEPENDENCE...WHITETOP...TROUTDALE...VOLNEY
934 AM EST FRI FEB 5 2016

...WIND ADVISORY WILL EXPIRE AT 10 AM EST THIS MORNING...

NORTHWEST WINDS SHOULD REMAIN RATHER STRONG THROUGH MIDDAY BEFORE
GRADUALLY DIMINISHING THIS AFTERNOON AS HIGH PRESSURE BUILDS IN
FROM THE WEST. GUSTS TO 40 OR 45 MPH COULD STILL OCCUR ESPECIALLY
ALONG THE RIDGES THROUGH AROUND NOON BEFORE SPEEDS DECREASE.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 3, 8:23 PM ESTAreal Flood WarningRNKSurry, Yadkin3 hr
Feb 3, 9:55 PM ESTRiver Flood WarningRNKCaswell34 hr
Feb 3, 9:55 PM ESTRiver Flood WarningRNKHalifax56 hr

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.