Alert archive / Virginia / Tornado Warnings in 2011

Tornado Warning 64, NWS Blacksburg, VA

September 5, 2011Henry County, Pittsylvania County, Virginia; Rockingham County, North Carolina

NWS Blacksburg, VA issued this tornado warning at Sep 5, 2011, 4:48 PM EDT for Henry County, Pittsylvania County, Virginia; Rockingham County, North Carolina. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Sep 5, 2011, 4:48 PM EDT (20:48 UTC)
Expired
Sep 5, 2011, 5:15 PM EDT
In force
27 min
Issued by
NWS Blacksburg, VA
Area
Storm-based polygon

Counties Rockingham County, NC, Henry County, VA, Pittsylvania County, VA

The radar

The Roanoke radar (KFCX), 69 km from the middle of the area, began a volume at 20:51 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, 8.8 hours before the alert went out and 52 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 2011-09-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 109 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 2011-09-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 62 square meters per square second.19395878Sfc1 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
109 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
689 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
62 m²/s²
0-3 km storm-relative helicity
48 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.

184 
WFUS51 KRNK 052048
TORRNK
NCC157-VAC089-143-052115-
/O.NEW.KRNK.TO.W.0064.110905T2048Z-110905T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
448 PM EDT MON SEP 5 2011

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN ROCKINGHAM COUNTY IN NORTH CENTRAL NORTH CAROLINA
  SOUTHWESTERN PITTSYLVANIA COUNTY IN SOUTH CENTRAL VIRGINIA
  SOUTHEASTERN HENRY COUNTY IN SOUTH CENTRAL VIRGINIA

* UNTIL 515 PM EDT.

* AT 447 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  STONEVILLE...MOVING NORTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  STONEVILLE...
  PRICE...
  EDEN...
  DRAPER...
  CASCADE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

WHEN IT IS SAFE TO DO SO...PLEASE RELAY YOUR SEVERE WEATHER REPORTS
TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE AT...1...8 6
6...2 1 5...4 3 2 4.

&&

LAT...LON 3668 7978 3654 7955 3635 7984 3644 8001
TIME...MOT...LOC 2048Z 224DEG 22KT 3644 7985

$$

AMS
3 follow-up statements
513 
WWUS51 KRNK 052058
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
458 PM EDT MON SEP 5 2011

NCC157-VAC089-143-052115-
/O.CON.KRNK.TO.W.0064.000000T0000Z-110905T2115Z/
ROCKINGHAM NC-PITTSYLVANIA VA-HENRY VA-
458 PM EDT MON SEP 5 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR NORTHERN
ROCKINGHAM...SOUTHWESTERN PITTSYLVANIA AND SOUTHEASTERN HENRY
COUNTIES...

AT 456 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR EDEN...MOVING
NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  EDEN...
  DRAPER...
  CASCADE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

&&

LAT...LON 3643 7978 3648 7991 3668 7978 3654 7955
TIME...MOT...LOC 2059Z 230DEG 26KT 3649 7976

$$

AMS
982 
WWUS51 KRNK 052108
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
508 PM EDT MON SEP 5 2011

NCC157-VAC089-143-052115-
/O.CON.KRNK.TO.W.0064.000000T0000Z-110905T2115Z/
ROCKINGHAM NC-PITTSYLVANIA VA-HENRY VA-
508 PM EDT MON SEP 5 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR NORTHERN
ROCKINGHAM...SOUTHWESTERN PITTSYLVANIA AND SOUTHEASTERN HENRY
COUNTIES...

AT 505 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR EDEN...MOVING
NORTHEAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  DRAPER...
  CASCADE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 3645 7973 3651 7981 3666 7975 3654 7955
TIME...MOT...LOC 2108Z 232DEG 23KT 3652 7970

$$

AMS
197 
WWUS51 KRNK 052116
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
516 PM EDT MON SEP 5 2011

NCC157-VAC089-143-052126-
/O.EXP.KRNK.TO.W.0064.000000T0000Z-110905T2115Z/
ROCKINGHAM NC-PITTSYLVANIA VA-HENRY VA-
516 PM EDT MON SEP 5 2011

...THE TORNADO WARNING FOR NORTHERN ROCKINGHAM...SOUTHWESTERN
PITTSYLVANIA AND SOUTHEASTERN HENRY COUNTIES EXPIRES AT 515 PM EDT...

THE STORM AND ROTATION HAS WEAKENED BUT WILL CONTINUE TO BE 
MONITORED FOR ANY ADDITIONAL DEVELOPMENT. 

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

LAT...LON 3645 7973 3651 7981 3666 7975 3654 7955
TIME...MOT...LOC 2108Z 232DEG 23KT 3652 7970

$$

AMS

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 4, 9:30 PM EDTSpecial Weather StatementRNKBath30 min
Sep 5, 5:31 PM EDTTornado WarningRNKCarroll, Grayson, City of Galax29 min
Sep 5, 6:31 PM EDTSpecial Weather StatementRNKBotetourt, Carroll, Craig, Floyd, Montgomery, Roanoke and 2 more59 min
Sep 5, 6:34 PM EDTSpecial Weather StatementRNKBedford, Campbell, Charlotte, Franklin, Halifax, Pittsylvania56 min
Sep 5, 6:42 PM EDTTornado WarningRNKHalifax33 min
Sep 5, 6:54 PM EDTTornado WarningRNKCarroll, Floyd, Patrick36 min
Sep 5, 7:14 PM EDTTornado WarningRNKBland, Pulaski, Wythe31 min
Sep 5, 7:16 PM EDTTornado WarningRNKCharlotte, Halifax29 min
Sep 5, 7:25 PM EDTSpecial Weather StatementRNKBotetourt35 min
Sep 5, 7:40 PM EDTTornado WarningRNKBland, Giles, Montgomery, Pulaski, Wythe, City of Radford35 min
Sep 5, 7:57 PM EDTAreal Flood AdvisoryRNKRoanoke, City of Roanoke, City of Salem3 hr
Sep 5, 3:53 PM EDTSpecial Weather StatementRNKAlleghany52 min
Sep 5, 3:57 PM EDTTornado WarningRNKAlleghany, Ashe, Wilkes33 min
Sep 5, 5:13 PM EDTSpecial Weather StatementRNKAlleghany32 min
Sep 5, 7:38 PM EDTSpecial Weather StatementRNKWilkes37 min

Nearby

Tornado Warnings in Virginia, 2011Tornado Warnings in North Carolina, 2011Every tornado warning in 2011Tornadoes in 2011

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.