Alert archive / Virginia / Tornado Warnings in 2013

Tornado Warning 4, NWS Blacksburg, VA

October 7, 2013Pittsylvania County, City of Danville, Virginia; Caswell County, Rockingham County, North Carolina

NWS Blacksburg, VA issued this tornado warning at Oct 7, 2013, 9:10 AM EDT for Pittsylvania County, City of Danville, Virginia; Caswell County, Rockingham County, North Carolina. It was in force for 35 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: Oct 7, 2013, 9:10 AM EDT (13:10 UTC)
Expired: Oct 7, 2013, 9:45 AM EDT
In force: 35 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon

Counties Caswell County, NC, Rockingham County, NC, City of Danville, VA, Pittsylvania County, VA

The radar

The Roanoke radar (KFCX), 86 km from the middle of the area, began a volume at 13:11 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, 1.2 hours before the alert went out and 57 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: 869 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 488 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 206 m²/s²
0-3 km storm-relative helicity: 222 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 6.1

Open this sounding in Storm Lab

The text

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

602 
WFUS51 KRNK 071310
TORRNK
NCC033-157-VAC143-590-071345-
/O.NEW.KRNK.TO.W.0004.131007T1310Z-131007T1345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
910 AM EDT MON OCT 7 2013

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN CASWELL COUNTY IN NORTH CENTRAL NORTH CAROLINA...
  NORTHEASTERN ROCKINGHAM COUNTY IN NORTH CENTRAL NORTH CAROLINA...
  SOUTHWESTERN PITTSYLVANIA COUNTY IN SOUTH CENTRAL VIRGINIA...
  THE CITY OF DANVILLE IN SOUTH CENTRAL VIRGINIA...

* UNTIL 945 AM EDT
    
* AT 909 AM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED
  OVER OREGON HILL...AND MOVING NORTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DANVILLE...
  MAYFIELD...
  DANVILLE CITY...
  DANVILLE AIRPORT...
  AND OREGON HILL. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE INSIDE A STURDY BUILDING AND GET TO A BASEMENT OR THE LOWEST
LEVEL. STAY AWAY FROM WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER
A HIGHWAY OVERPASS. EVACUATE MOBILE HOMES AND GET INSIDE A STURDIER
STRUCTURE.

WHEN IT IS SAFE TO DO SO...PLEASE RELAY YOUR REPORTS OF SEVERE
WEATHER TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE AT 1...8
6 6...2 1 5...4 3 2 4. REPORTS AND PICTURES CAN ALSO BE SHARED ON THE
NATIONAL WEATHER SERVICE BLACKSBURG FACEBOOK PAGE AND ON TWITTER.

&&

LAT...LON 3640 7969 3648 7970 3670 7944 3657 7927
TIME...MOT...LOC 1309Z 237DEG 26KT 3647 7965 
$$

16

3 follow-up statements

505 
WWUS51 KRNK 071322
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
922 AM EDT MON OCT 7 2013

NCC033-157-VAC143-590-071345-
/O.CON.KRNK.TO.W.0004.000000T0000Z-131007T1345Z/
CASWELL NC-ROCKINGHAM NC-PITTSYLVANIA VA-CITY OF DANVILLE VA-
922 AM EDT MON OCT 7 2013

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 AM EDT FOR 
NORTHWESTERN CASWELL...NORTHEASTERN ROCKINGHAM...SOUTHWESTERN
PITTSYLVANIA COUNTIES AND THE CITY OF DANVILLE...
    
AT 921 AM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR
PELHAM...MOVING NORTHEAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
DANVILLE...
MAYFIELD...
AND PELHAM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE INSIDE A STURDY BUILDING AND GET TO A BASEMENT OR THE LOWEST
LEVEL. STAY AWAY FROM WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER
A HIGHWAY OVERPASS. EVACUATE MOBILE HOMES AND GET INSIDE A STURDIER
STRUCTURE.

WHEN IT IS SAFE TO DO SO...PLEASE SEND YOUR REPORTS OF HAIL OF ANY
SIZE...AS WELL AS ANY REPORTS OF WIND DAMAGE...INCLUDING DOWNED TREES
OR LARGE LIMBS...TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE
AT 1...8 6 6...2 1 5...4 3 2 4. REPORTS AND PICTURES CAN ALSO BE
SHARED ON THE NATIONAL WEATHER SERVICE BLACKSBURG FACEBOOK PAGE AND
ON TWITTER.

&&

LAT...LON 3642 7965 3652 7965 3670 7944 3657 7927
TIME...MOT...LOC 1321Z 239DEG 37KT 3653 7951 

$$

16

557 
WWUS51 KRNK 071336
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
936 AM EDT MON OCT 7 2013

NCC157-071345-
/O.CAN.KRNK.TO.W.0004.000000T0000Z-131007T1345Z/
ROCKINGHAM NC-
936 AM EDT MON OCT 7 2013

...THE TORNADO WARNING FOR 
NORTHEASTERN ROCKINGHAM COUNTY IS CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT 
OF THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 3652 7952 3654 7951 3654 7955 3655 7956
      3659 7957 3670 7944 3657 7927 3647 7951
TIME...MOT...LOC 1335Z 237DEG 43KT 3657 7941 

$$

NCC033-VAC143-590-071345-
/O.CON.KRNK.TO.W.0004.000000T0000Z-131007T1345Z/
CASWELL NC-PITTSYLVANIA VA-CITY OF DANVILLE VA-
936 AM EDT MON OCT 7 2013

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 AM EDT FOR 
NORTHWESTERN CASWELL...SOUTHERN PITTSYLVANIA COUNTIES AND THE CITY OF
DANVILLE...
    
AT 935 AM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED OVER
DANVILLE CITY...MOVING NORTHEAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
DANVILLE...
GATEWOOD... 
AND PELHAM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE INSIDE A STURDY BUILDING AND GET TO A BASEMENT OR THE LOWEST
LEVEL. STAY AWAY FROM WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER
A HIGHWAY OVERPASS. EVACUATE MOBILE HOMES AND GET INSIDE A STURDIER
STRUCTURE.

WHEN IT IS SAFE TO DO SO...PLEASE SEND YOUR REPORTS OF HAIL OF ANY
SIZE...AS WELL AS ANY REPORTS OF WIND DAMAGE...INCLUDING DOWNED TREES
OR LARGE LIMBS...TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE
AT 1...8 6 6...2 1 5...4 3 2 4. REPORTS AND PICTURES CAN ALSO BE
SHARED ON THE NATIONAL WEATHER SERVICE BLACKSBURG FACEBOOK PAGE AND
ON TWITTER.

&&

LAT...LON 3652 7952 3654 7951 3654 7955 3655 7956
      3659 7957 3670 7944 3657 7927 3647 7951
TIME...MOT...LOC 1335Z 237DEG 43KT 3657 7941 

$$

16

392 
WWUS51 KRNK 071341
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
941 AM EDT MON OCT 7 2013

NCC033-VAC143-590-071351-
/O.EXP.KRNK.TO.W.0004.000000T0000Z-131007T1345Z/
CASWELL NC-PITTSYLVANIA VA-CITY OF DANVILLE VA-
941 AM EDT MON OCT 7 2013

...THE TORNADO WARNING FOR 
NORTHWESTERN CASWELL...SOUTHERN PITTSYLVANIA COUNTIES AND THE CITY OF
DANVILLE WILL EXPIRE AT 945 AM EDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS TO BE CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.


LAT...LON 3652 7952 3654 7951 3654 7955 3655 7956
      3659 7957 3670 7944 3657 7927 3647 7951
TIME...MOT...LOC 1339Z 237DEG 26KT 3657 7941 

$$

16

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 7, 4:16 AM EDT	Special Weather Statement	RNK	Botetourt, Floyd, Montgomery, Roanoke, City of Roanoke, City of Salem	59 min
Oct 7, 4:28 AM EDT	Special Weather Statement	RNK	Carroll, City of Galax	62 min
Oct 7, 5:26 AM EDT	Special Weather Statement	RNK	Floyd, Montgomery, Patrick, Roanoke, City of Roanoke, City of Salem	64 min
Oct 7, 6:31 AM EDT	Special Weather Statement	RNK	Amherst, Rockbridge, City of Buena Vista, City of Lexington	29 min
Oct 7, 6:35 AM EDT	Special Weather Statement	RNK	Bedford, Franklin, Henry, City of Martinsville	55 min
Oct 7, 7:32 AM EDT	Special Weather Statement	RNK	Amherst, Bedford, City of Buena Vista, City of Lynchburg	58 min
Oct 7, 8:05 AM EDT	Special Weather Statement	RNK	Henry, City of Martinsville	40 min
Oct 7, 8:50 AM EDT	Special Weather Statement	RNK	Pittsylvania, City of Danville	40 min
Oct 7, 8:56 AM EDT	Severe Thunderstorm Warning	RNK	Henry, Pittsylvania	34 min
Oct 7, 9:33 AM EDT	Special Weather Statement	RNK	Appomattox, Buckingham, Campbell, Charlotte	42 min
Oct 7, 9:45 AM EDT	Special Weather Statement	RNK	Halifax, City of Danville	30 min
Oct 7, 3:35 AM EDT	Special Weather Statement	RNK	Surry, Wilkes, Yadkin	55 min

Nearby

Tornado Warnings in Virginia, 2013 Tornado Warnings in North Carolina, 2013 Every tornado warning in 2013 Tornadoes in 2013

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.