Alert archive / North Carolina / Tornado Warnings in 2011

Tornado Warning 8, NWS Blacksburg, VA

April 8, 2011Rockingham County, Stokes County, North Carolina; Patrick County, Virginia

NWS Blacksburg, VA issued this tornado warning at Apr 8, 2011, 8:29 PM EDT for Rockingham County, Stokes County, North Carolina; Patrick County, Virginia. It was in force for 31 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: Apr 8, 2011, 8:29 PM EDT (00:29 UTC)
Expired: Apr 8, 2011, 9:00 PM EDT
In force: 31 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon

Counties Rockingham County, NC, Stokes County, NC, Patrick County, VA

The radar

The Roanoke radar (KFCX), 50 km from the middle of the area, began a volume at 00:33 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

Time	Report	Where	Remark
Apr 8, 8:36 PM EDT	HAIL 1	5 E Stuart, VA

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 8, 6:15 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 0.5 hours before the alert went out and 60 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: 42 J/kg
Mixed-layer CIN: -165 J/kg
Mixed-layer LCL: 1618 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 279 m²/s²
0-3 km storm-relative helicity: 424 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

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

712 
WFUS51 KRNK 090029
TORRNK
NCC157-169-VAC141-090100-
/O.NEW.KRNK.TO.W.0008.110409T0029Z-110409T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
829 PM EDT FRI APR 8 2011

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN ROCKINGHAM COUNTY IN NORTH CENTRAL NORTH CAROLINA
  NORTHEASTERN STOKES COUNTY IN NORTH CENTRAL NORTH CAROLINA
  EASTERN PATRICK COUNTY IN SOUTHWEST VIRGINIA

* UNTIL 900 PM EDT.

* AT 823 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES
  NORTHWEST OF STUART...MOVING SOUTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  STUART...
  CRITZ...
  SANDY RIDGE...
  AYERSVILLE...
  DILLARD...

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
SATURDAY MORNING FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN
VIRGINIA AND SOUTHEAST WEST VIRGINIA.

&&

LAT...LON 3669 8042 3677 8035 3658 8005 3654 8005
      3655 7999 3648 7990 3636 8009
TIME...MOT...LOC 0028Z 315DEG 41KT 3666 8030

$$

DS

2 follow-up statements

577 
WWUS51 KRNK 090044
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
844 PM EDT FRI APR 8 2011

NCC157-169-VAC141-090100-
/O.CON.KRNK.TO.W.0008.000000T0000Z-110409T0100Z/
ROCKINGHAM NC-STOKES NC-PATRICK VA-
844 PM EDT FRI APR 8 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM EDT FOR
SOUTHEASTERN PATRICK...NORTHEASTERN STOKES AND NORTHWESTERN
ROCKINGHAM COUNTIES...

AT 842 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR CRITZ...OR 7 MILES
NORTHWEST OF SANDY RIDGE...MOVING SOUTHEAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  CRITZ...
  SANDY RIDGE...
  AYERSVILLE...

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
SATURDAY MORNING FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN
VIRGINIA AND SOUTHEAST WEST VIRGINIA.

&&

LAT...LON 3664 8030 3666 8018 3658 8005 3654 8005
      3655 8001 3654 7998 3648 7990 3636 8009
TIME...MOT...LOC 0044Z 315DEG 41KT 3657 8015

$$

DS

135 
WWUS51 KRNK 090101
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
901 PM EDT FRI APR 8 2011

NCC157-169-VAC141-090111-
/O.EXP.KRNK.TO.W.0008.000000T0000Z-110409T0100Z/
ROCKINGHAM NC-STOKES NC-PATRICK VA-
901 PM EDT FRI APR 8 2011

...THE TORNADO WARNING FOR SOUTHEASTERN PATRICK...NORTHEASTERN STOKES
AND NORTHWESTERN ROCKINGHAM COUNTIES EXPIRED AT 900 PM EDT...

THE STORM THAT PROMPTED THE WARNING HAS WEAKENED AND EXITED THE 
WARNED AREA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
SATURDAY MORNING FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN
VIRGINIA AND SOUTHEAST WEST VIRGINIA.

LAT...LON 3664 8030 3666 8018 3658 8005 3654 8005
      3655 8001 3654 7998 3648 7990 3636 8009
TIME...MOT...LOC 0044Z 315DEG 41KT 3656 8017

$$

DS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 8:30 PM EDT	Severe Thunderstorm Warning	RNK	Rockingham	30 min
Apr 8, 9:00 PM EDT	Severe Thunderstorm Warning	RNK	Caswell, Rockingham	41 min
Apr 8, 10:59 PM EDT	Severe Thunderstorm Warning	RNK	Stokes	31 min
Apr 8, 11:24 PM EDT	Special Weather Statement	RNK	Rockingham	36 min
Apr 8, 11:33 PM EDT	Special Weather Statement	RNK	Stokes	27 min
Apr 8, 11:58 PM EDT	Severe Thunderstorm Warning	RNK	Rockingham, Stokes	32 min
Apr 9, 12:13 AM EDT	Special Weather Statement	RNK	Stokes	17 min
Apr 9, 12:27 AM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Surry	48 min
Apr 9, 12:56 AM EDT	Tornado Warning	RNK	Alleghany, Surry	34 min
Apr 9, 1:18 AM EDT	Special Weather Statement	RNK	Surry	57 min
Apr 9, 1:26 AM EDT	Severe Thunderstorm Warning	RNK	Stokes, Surry, Yadkin	35 min
Apr 9, 1:28 AM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Surry, Wilkes, Yadkin	35 min
Apr 9, 1:46 AM EDT	Special Weather Statement	RNK	Ashe	59 min
Apr 9, 2:34 AM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Ashe	41 min
Apr 9, 2:53 PM EDT	Severe Thunderstorm Warning	RNK	Ashe, Surry, Watauga, Wilkes, Yadkin	67 min
Apr 9, 3:20 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Ashe, Surry, Watauga, Wilkes, Yadkin	55 min
Apr 9, 3:27 PM EDT	Tornado Warning	RNK	Alleghany, Ashe	33 min
Apr 9, 3:47 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Stokes, Surry	58 min
Apr 9, 5:01 PM EDT	Special Weather Statement	RNK	Ashe	29 min
Apr 9, 5:11 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Ashe, Surry, Wilkes	49 min
Apr 9, 5:36 PM EDT	Special Weather Statement	RNK	Rockingham	24 min
Apr 9, 5:59 PM EDT	Special Weather Statement	RNK	Yadkin	31 min
Apr 9, 6:17 PM EDT	Special Weather Statement	RNK	Caswell	43 min
Apr 8, 8:03 PM EDT	Special Weather Statement	RNK	Pittsylvania	27 min
Apr 8, 9:29 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Giles	31 min
Apr 8, 9:50 PM EDT	Severe Thunderstorm Warning	RNK	Giles, Montgomery, Pulaski, City of Radford	25 min
Apr 8, 9:58 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Pulaski, Wythe	32 min
Apr 8, 10:00 PM EDT	Severe Thunderstorm Warning	RNK	Bland	30 min
Apr 8, 10:15 PM EDT	Severe Thunderstorm Warning	RNK	Floyd, Montgomery, Pulaski	30 min
Apr 8, 10:29 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Wythe	14 min
Apr 8, 10:37 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Pulaski	23 min
Apr 8, 10:52 PM EDT	Special Weather Statement	RNK	Henry, City of Martinsville	38 min
Apr 8, 11:11 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Smyth, Tazewell, Wythe	49 min
Apr 9, 12:00 AM EDT	Severe Thunderstorm Warning	RNK	Bland, Carroll, Grayson, Smyth, Wythe	30 min
Apr 9, 2:22 AM EDT	Special Weather Statement	RNK	Smyth	53 min
Apr 9, 2:50 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, Smyth, Wythe	85 min
Apr 9, 2:56 PM EDT	Tornado Warning	RNK	Smyth	34 min
Apr 9, 3:18 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Smyth, Tazewell, Wythe	57 min
Apr 9, 3:23 PM EDT	Tornado Warning	RNK	Grayson, Smyth	22 min
Apr 9, 3:42 PM EDT	Tornado Warning	RNK	Grayson	33 min
Apr 9, 4:15 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Patrick, City of Galax	35 min
Apr 9, 4:29 PM EDT	Special Weather Statement	RNK	Bland, Tazewell	61 min
Apr 9, 4:58 PM EDT	Special Weather Statement	RNK	Grayson, Smyth, Wythe	32 min
Apr 9, 5:09 PM EDT	Special Weather Statement	RNK	Giles, Pulaski, City of Radford	66 min

Nearby

Tornado Warnings in North Carolina, 2011 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.