Alert archive / North Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 113, NWS Blacksburg, VA

May 31, 2012Ashe County, Watauga County, Wilkes County, North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at May 31, 2012, 4:01 PM EDT for Ashe County, Watauga County, Wilkes County, North Carolina. It was in force for 32 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 31, 2012, 4:01 PM EDT (20:01 UTC)
Expired
May 31, 2012, 4:33 PM EDT
In force
32 min
Issued by
NWS Blacksburg, VA
Area
Storm-based polygon

Counties Ashe County, NC, Watauga County, NC, Wilkes County, NC

The radar

The Roanoke radar (KFCX), 144 km from the middle of the area, began a volume at 20:02 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.

What was reported inside it

TimeReportWhereRemark
May 31, 4:05 PM EDTHAIL 0.5Boone, NCSEVERAL REPORTS OF PEA TO DIME SIZE HAIL COVERING THE GROUND

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.0 hours before the alert went out and 152 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 2012-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 28 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 12:00Z on 2012-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 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
28 J/kg
Mixed-layer CIN
-130 J/kg
Mixed-layer LCL
1879 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
19 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

931 
WUUS51 KRNK 312001
SVRRNK
NCC009-189-193-312100-
/O.NEW.KRNK.SV.W.0113.120531T2001Z-120531T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
401 PM EDT THU MAY 31 2012

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN ASHE COUNTY IN NORTHWEST NORTH CAROLINA
  EASTERN WATAUGA COUNTY IN NORTHWEST NORTH CAROLINA
  WESTERN WILKES COUNTY IN NORTHWEST NORTH CAROLINA

* UNTIL 500 PM EDT.

* AT 358 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING ONE INCH DIAMETER HAIL...
  AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED
  NEAR MOSES CONE MEMORIAL PARK...OR NEAR BOONE...AND MOVING
  NORTHEAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MOSES CONE MEMORIAL PARK...
  BOONE...
  SANDS...
  RUTHERWOOD...
  DEEP GAP...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER.

REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...
DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY
HEAVY RAIN.

WHEN IT IS SAFE TO DO SO...PLEASE SEND YOUR REPORTS OF QUARTER OR
LARGER SIZED HAIL...AS WELL AS WIND DAMAGE...INCLUDING TREES OR LARGE
LIMBS DOWNED BY CALLING THE NATIONAL WEATHER SERVICE TOLL FREE AT...
1...8 6 6...2 1 5...4 3 2 4.

&&

LAT...LON 3639 8155 3623 8136 3612 8168 3619 8174
TIME...MOT...LOC 2001Z 229DEG 12KT 3618 8166

$$

DS
2 follow-up statements
348 
WWUS51 KRNK 312019
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
419 PM EDT THU MAY 31 2012

NCC009-189-193-312100-
/O.CON.KRNK.SV.W.0113.000000T0000Z-120531T2100Z/
ASHE NC-WATAUGA NC-WILKES NC-
419 PM EDT THU MAY 31 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR SOUTHERN ASHE...EASTERN WATAUGA AND WESTERN WILKES COUNTIES...

AT 415 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR AHO...OR NEAR 
BOONE...MOVING NORTHEAST AT 15 MPH. THE POTENTIAL FOR LARGE HAIL HAS 
DECREASED.

LOCATIONS IMPACTED INCLUDE...
  AHO...
  RUTHERWOOD...
  DEEP GAP...
  FLEETWOOD...
  BALDWIN...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER.
REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...
DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY
HEAVY RAIN.

&&

LAT...LON 3614 8166 3619 8170 3639 8155 3623 8136
TIME...MOT...LOC 2018Z 229DEG 12KT 3620 8162

$$

DS
902 
WWUS51 KRNK 312033
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
433 PM EDT THU MAY 31 2012

NCC009-189-193-312041-
/O.CAN.KRNK.SV.W.0113.000000T0000Z-120531T2100Z/
ASHE NC-WATAUGA NC-WILKES NC-
433 PM EDT THU MAY 31 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN ASHE...EASTERN
WATAUGA AND WESTERN WILKES COUNTIES IS CANCELLED...

THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND 
EXITED THE WARNED AREA. THEREFORE...THE WARNING HAS BEEN CANCELLED. 
THE THUNDERSTORM STILL IS CAPABLE OF FREQUENT LIGHTNING AND HEAVY 
DOWNPOURS. ANOTHER STRONG STORM IS ENTERING THE SOUTHERN PARTS OF 
WATAUGA COUNTY FROM THE SOUTHWEST BETWEEN BEECH MOUNTAIN AND 
GRANDFATHER MOUNTAIN. THIS STORM IS BEING MONITORED CLOSELY FOR THE 
POTENTIAL FOR HAIL AND STRONG WINDS.

TO REPORT SEVERE WEATHER...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN BLACKSBURG AT...1 8 6 6...2 1 5...4 3 2 4.

LAT...LON 3614 8166 3619 8170 3639 8155 3623 8136
TIME...MOT...LOC 2031Z 229DEG 12KT 3623 8158

$$

DS

The office that day

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

IssuedProductOfficeCountiesLasted
May 31, 4:07 PM EDTAreal Flood AdvisoryRNKWatauga3 hr
May 31, 4:35 PM EDTSpecial Weather StatementRNKWatauga25 min
May 31, 5:58 PM EDTSpecial Weather StatementRNKStokes32 min
May 31, 6:04 PM EDTSpecial Weather StatementRNKYadkin26 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2012Every severe thunderstorm warning in 2012

Sources

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