Alert archive / Virginia / Tornado Warnings in 2011

Tornado Warning 74, NWS Blacksburg, VA

September 6, 2011Charlotte County, Halifax County, Virginia

NWS Blacksburg, VA issued this tornado warning at Sep 6, 2011, 5:04 AM EDT for Charlotte County, Halifax County, Virginia. It was in force for 26 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 6, 2011, 5:04 AM EDT (09:04 UTC)
Expired: Sep 6, 2011, 5:30 AM EDT
In force: 26 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon

Counties Charlotte County, VA, Halifax County, VA

The radar

The Raleigh/Durham radar (KRAX), 113 km from the middle of the area, began a volume at 09:04 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

Roanoke, VA (KRNK), launched 00:00Z, 9.1 hours before the alert went out and 92 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 272 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 634 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 170 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

382 
WFUS51 KRNK 060904
TORRNK
VAC037-083-060930-
/O.NEW.KRNK.TO.W.0074.110906T0904Z-110906T0930Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
504 AM EDT TUE SEP 6 2011

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN HALIFAX COUNTY IN SOUTH CENTRAL VIRGINIA
  SOUTHERN CHARLOTTE COUNTY IN SOUTH CENTRAL VIRGINIA

* UNTIL 530 AM EDT.

* AT 503 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR CLUSTER
  SPRINGS...OR NEAR VIRGILINA...MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CLUSTER SPRINGS...
  VIRGILINA...
  HITESBURG...
  SCOTTSBURG...
  DRYBURG...

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.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER 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 3670 7864 3668 7863 3667 7860 3666 7862
      3669 7865 3669 7867 3667 7870 3658 7871
      3653 7876 3654 7901 3656 7904 3691 7871
      3680 7856
TIME...MOT...LOC 0904Z 220DEG 28KT 3658 7887

$$

JH

2 follow-up statements

730 
WWUS51 KRNK 060910
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
510 AM EDT TUE SEP 6 2011

VAC037-083-060930-
/O.CON.KRNK.TO.W.0074.000000T0000Z-110906T0930Z/
HALIFAX VA-CHARLOTTE VA-
510 AM EDT TUE SEP 6 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 AM EDT FOR
SOUTHEASTERN HALIFAX AND SOUTHERN CHARLOTTE COUNTIES...

AT 507 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR CLUSTER SPRINGS...
OR 6 MILES NORTHWEST OF VIRGILINA...MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  CLUSTER SPRINGS...
  HITESBURG...
  DRYBURG...

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.

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

&&

LAT...LON 3670 7864 3668 7863 3667 7860 3666 7862
      3669 7865 3669 7867 3667 7870 3658 7871
      3654 7878 3654 7894 3654 7898 3659 7896
      3691 7871 3680 7856
TIME...MOT...LOC 0910Z 220DEG 28KT 3661 7885

$$

JH

342 
WWUS51 KRNK 060919
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
519 AM EDT TUE SEP 6 2011

VAC037-083-060930-
/O.CON.KRNK.TO.W.0074.000000T0000Z-110906T0930Z/
HALIFAX VA-CHARLOTTE VA-
519 AM EDT TUE SEP 6 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 AM EDT FOR
SOUTHEASTERN HALIFAX AND SOUTHERN CHARLOTTE COUNTIES...

AT 517 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR HITESBURG...OR
NEAR VIRGILINA...MOVING NORTHEAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  HITESBURG...
  DRYBURG...

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 PM EDT TUESDAY AFTERNOON
FOR NORTH CENTRAL NORTH CAROLINA AND SOUTH CENTRAL VIRGINIA.

&&

LAT...LON 3670 7864 3668 7863 3667 7860 3666 7862
      3669 7865 3669 7867 3667 7870 3658 7871
      3655 7878 3657 7886 3659 7889 3663 7891
      3691 7871 3680 7856
TIME...MOT...LOC 0919Z 220DEG 28KT 3663 7880

$$

JH

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 5, 8:12 PM EDT	Tornado Warning	RNK	Craig, Giles, Montgomery, Roanoke	33 min
Sep 5, 8:17 PM EDT	Special Weather Statement	RNK	Amherst, Bedford, Franklin, City of Lynchburg	28 min
Sep 5, 8:36 PM EDT	Tornado Warning	RNK	Bedford	39 min
Sep 5, 9:24 PM EDT	Special Weather Statement	RNK	Amherst, City of Lynchburg	36 min
Sep 5, 9:40 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Patrick	45 min
Sep 5, 10:00 PM EDT	Special Weather Statement	RNK	Appomattox, Buckingham, City of Lynchburg	60 min
Sep 5, 10:03 PM EDT	Tornado Warning	RNK	Carroll, Patrick	27 min
Sep 5, 10:09 PM EDT	Flash Flood Warning	RNK	Floyd, Franklin, Roanoke	6 hr
Sep 5, 10:19 PM EDT	Flash Flood Warning	RNK	Carroll, Floyd, Patrick	6 hr
Sep 5, 10:23 PM EDT	Special Weather Statement	RNK	Campbell, City of Lynchburg	67 min
Sep 5, 10:50 PM EDT	Severe Thunderstorm Warning	RNK	Buckingham	25 min
Sep 5, 10:52 PM EDT	Flash Flood Warning	RNK	Bedford, Campbell, Franklin, City of Lynchburg	6 hr
Sep 5, 11:04 PM EDT	Flash Flood Warning	RNK	Carroll, Floyd, Franklin, Patrick	6 hr
Sep 5, 11:22 PM EDT	Flash Flood Warning	RNK	Amherst	6 hr
Sep 5, 11:43 PM EDT	Special Weather Statement	RNK	Amherst, Bedford, Buckingham, City of Lynchburg	62 min
Sep 6, 12:17 AM EDT	Flash Flood Warning	RNK	Carroll, Grayson, City of Galax	6 hr
Sep 6, 12:51 AM EDT	Special Weather Statement	RNK	Appomattox, Buckingham	54 min
Sep 6, 1:10 AM EDT	Severe Thunderstorm Warning	RNK	Appomattox, Buckingham	65 min
Sep 6, 3:30 AM EDT	Areal Flood Warning	RNK	Alleghany, Amherst, Bath, Bedford, Botetourt, Craig and 7 more	18 hr
Sep 6, 3:38 AM EDT	Areal Flood Warning	RNK	Carroll, Floyd, Franklin, Giles, Grayson, Montgomery and 5 more	18 hr
Sep 6, 3:39 AM EDT	Special Weather Statement	RNK	Appomattox, Bedford, Campbell, Franklin, Pittsylvania, City of Lynchburg	66 min
Sep 6, 4:34 AM EDT	Special Weather Statement	RNK	Halifax	56 min
Sep 6, 4:51 AM EDT	Severe Thunderstorm Warning	RNK	Charlotte, Halifax	54 min
Sep 6, 5:28 AM EDT	Tornado Warning	RNK	Charlotte, Halifax	47 min
Sep 6, 7:43 AM EDT	Flash Flood Warning	RNK	Floyd, Franklin, Roanoke	6 hr
Sep 6, 8:28 AM EDT	Tornado Warning	RNK	Carroll, Patrick	19 min
Sep 6, 9:48 AM EDT	Tornado Warning	RNK	Patrick	27 min
Sep 6, 9:57 AM EDT	Areal Flood Warning	RNK	Carroll, Grayson, Patrick	12 hr

Nearby

Tornado Warnings in Virginia, 2011 Every tornado warning in 2011 Tornadoes 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.