Alert archive / North Carolina / Tornado Warnings in 2011

Tornado Warning 62, NWS Blacksburg, VA

May 24, 2011Caswell County, Rockingham County, North Carolina

NWS Blacksburg, VA issued this tornado warning at May 24, 2011, 8:25 PM EDT for Caswell County, Rockingham County, North Carolina. It was in force for 34 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 24, 2011, 8:25 PM EDT (00:25 UTC)
Expired: May 24, 2011, 8:59 PM EDT
In force: 34 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon

Counties Caswell County, NC, Rockingham County, NC

The radar

The Roanoke radar (KFCX), 108 km from the middle of the area, began a volume at 00:25 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
May 24, 8:40 PM EDT	TSTM WND DMG	3 Sw Providence, NC	NUMEROUS LARGE TREE LIMBS DOWN

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
May 24, 4:43 PM EDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 0.4 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: 564 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 1680 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 233 m²/s²
0-3 km storm-relative helicity: 321 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 5.1

Open this sounding in Storm Lab

The text

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

385 
WFUS51 KRNK 250025
TORRNK
NCC033-157-250115-
/O.NEW.KRNK.TO.W.0062.110525T0025Z-110525T0115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
825 PM EDT TUE MAY 24 2011

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* TORNADO WARNING FOR...
  CASWELL COUNTY IN NORTH CENTRAL NORTH CAROLINA
  EASTERN ROCKINGHAM COUNTY IN NORTH CENTRAL NORTH CAROLINA

* UNTIL 915 PM EDT.

* AT 820 PM EDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD
  NEAR LAWSONVILLE...OR 7 MILES NORTHWEST OF CAMP SPRINGS...MOVING
  EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  QUICK...
  YANCEYVILLE...
  HAMER...
  LEASBURG...

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 3633 7962 3644 7963 3654 7913 3630 7914
      3629 7915
TIME...MOT...LOC 0025Z 263DEG 26KT 3639 7951

$$

16

2 follow-up statements

393 
WWUS51 KRNK 250044
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
844 PM EDT TUE MAY 24 2011

NCC157-250055-
/O.CAN.KRNK.TO.W.0062.000000T0000Z-110525T0115Z/
ROCKINGHAM NC-
844 PM EDT TUE MAY 24 2011

...THE TORNADO WARNING FOR EASTERN ROCKINGHAM COUNTY IS CANCELLED...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

&&

LAT...LON 3632 7946 3647 7946 3654 7913 3630 7914
      3629 7915
TIME...MOT...LOC 0045Z 264DEG 29KT 3641 7927

$$

NCC033-250115-
/O.CON.KRNK.TO.W.0062.000000T0000Z-110525T0115Z/
CASWELL NC-
844 PM EDT TUE MAY 24 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM EDT FOR CASWELL
COUNTY...

AT 843 PM EDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD. 
THIS TORNADO WAS LOCATED NEAR TOPNOT...OR NEAR YANCEYVILLE...MOVING
EAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  TOPNOT...
  LEASBURG...
  SEMORA...

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
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

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.

&&

LAT...LON 3632 7946 3647 7946 3654 7913 3630 7914
      3629 7915
TIME...MOT...LOC 0045Z 264DEG 29KT 3641 7927

$$

16

394 
WWUS51 KRNK 250059
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
859 PM EDT TUE MAY 24 2011

NCC033-250107-
/O.CAN.KRNK.TO.W.0062.000000T0000Z-110525T0115Z/
CASWELL NC-
859 PM EDT TUE MAY 24 2011

...THE TORNADO WARNING FOR CASWELL COUNTY IS CANCELLED...

THE TORNADO THREAT FOR THE WARNED AREA HAS ENDED. THE THUNDERSTORM
PRODUCING THE TORNADO HAS WEAKENED AND MOVED OUT OF THE WARNING AREA.

STAY TUNED TO NOAA WEATHER RADIO...TV OR YOUR LOCAL NEW SOURCE FOR
THE LATEST WEATHER INFORMATION. REPORT ANY SEVERE WEATHER OR STORM
RELATED DAMAGE TO LOCAL LAW ENFORCEMENT OFFICIALS AND ASK THEM TO
IMMEDIATELY RELAY THE REPORT TO THE NATIONAL WEATHER SERVICE IN
BLACKSBURG.

LAT...LON 3632 7946 3647 7946 3654 7913 3630 7914
      3629 7915
TIME...MOT...LOC 0057Z 264DEG 29KT 3642 7915

$$

16

The office that day

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

Issued	Product	Office	Counties	Lasted
May 24, 8:10 PM EDT	Severe Thunderstorm Warning	RNK	Caswell, Rockingham	43 min
May 24, 9:03 PM EDT	Special Weather Statement	RNK	Rockingham	42 min
May 24, 9:31 PM EDT	Special Weather Statement	RNK	Caswell	29 min
May 24, 9:57 PM EDT	Special Weather Statement	RNK	Caswell	18 min

Nearby

Tornado Warnings in North Carolina, 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.