Alert archive / North Carolina / Tornado Warnings in 2011

Tornado Warning 26, NWS Blacksburg, VA

April 27, 2011Rockingham County, North Carolina

NWS Blacksburg, VA issued this tornado warning at Apr 27, 2011, 6:55 PM EDT for Rockingham County, North Carolina. It was in force for 50 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 27, 2011, 6:55 PM EDT (22:55 UTC)
Expired: Apr 27, 2011, 7:45 PM EDT
In force: 50 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon

County Rockingham County, NC

The radar

The Roanoke radar (KFCX), 93 km from the middle of the area, began a volume at 22:56 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 27, 7:09 PM EDT	TSTM WND DMG	4 Sse Reidsville, NC	TREE DOWN ALONG US ROUTE 29

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 27, 6:15 PM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.9 hours before the alert went out and 26 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: 446 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 564 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 106 m²/s²
0-3 km storm-relative helicity: 130 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

723 
WFUS51 KRNK 272255
TORRNK
NCC157-272345-
/O.NEW.KRNK.TO.W.0026.110427T2255Z-110427T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
655 PM EDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

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

* UNTIL 745 PM EDT.

* AT 652 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES SOUTH OF
  BETHANY...OR 9 MILES NORTH OF GREENSBORO...MOVING NORTHEAST AT 35
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  MONROETON...
  REIDSVILLE...
  HARRISONS CROSSROADS...

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 3625 7983 3625 7990 3626 7990 3647 7972
      3636 7953 3624 7970 3624 7982
TIME...MOT...LOC 2256Z 222DEG 31KT 3623 7984

$$

16

1 follow-up statement

661 
WWUS51 KRNK 272344
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
744 PM EDT WED APR 27 2011

NCC157-272355-
/O.EXP.KRNK.TO.W.0026.000000T0000Z-110427T2345Z/
ROCKINGHAM NC-
744 PM EDT WED APR 27 2011

...THE TORNADO WARNING FOR EASTERN ROCKINGHAM COUNTY EXPIRES AT 745
PM EDT...

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

LAT...LON 3625 7983 3625 7990 3626 7990 3647 7972
      3636 7953 3624 7970 3624 7982
TIME...MOT...LOC 2345Z 222DEG 31KT 3654 7949

$$

16

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 1:27 PM EDT	Severe Thunderstorm Warning	RNK	Rockingham, Stokes, Surry, Yadkin	63 min
Apr 27, 5:22 PM EDT	Severe Thunderstorm Warning	RNK	Rockingham, Stokes	53 min
Apr 27, 6:05 PM EDT	Severe Thunderstorm Warning	RNK	Rockingham, Stokes	40 min
Apr 27, 6:07 PM EDT	Tornado Warning	RNK	Rockingham, Stokes	23 min
Apr 27, 6:09 PM EDT	Tornado Warning	RNK	Rockingham	36 min
Apr 27, 6:30 PM EDT	Tornado Warning	RNK	Rockingham	30 min
Apr 27, 7:08 PM EDT	Tornado Warning	RNK	Rockingham, Stokes	37 min
Apr 27, 7:29 PM EDT	Severe Thunderstorm Warning	RNK	Caswell, Rockingham	46 min
Apr 27, 7:35 PM EDT	Tornado Warning	RNK	Rockingham	40 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.