Alert archive / Virginia / Tornado Warnings in 2011

Tornado Warning 14, NWS Morristown, TN

April 9, 2011Wise County, City of Norton, Virginia

NWS Morristown, TN issued this tornado warning at Apr 9, 2011, 3:37 PM EDT for Wise County, City of Norton, Virginia. It was in force for 38 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: Apr 9, 2011, 3:37 PM EDT (19:37 UTC)
Expired: Apr 9, 2011, 4:15 PM EDT
In force: 38 min
Issued by: NWS Morristown, TN
Area: Storm-based polygon

Counties City of Norton, VA, Wise County, VA

The radar

The Jackson,KY radar (KJKL), 90 km from the middle of the area, began a volume at 19:37 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 9, 12:34 PM EDT	Severe Thunderstorm Watch	SPC	4 hr
Apr 9, 2:00 PM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.6 hours before the alert went out and 263 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 704 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 169 m²/s²
0-3 km storm-relative helicity: 256 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

133 
WFUS54 KMRX 091937
TORMRX
VAC195-720-092015-
/O.NEW.KMRX.TO.W.0014.110409T1937Z-110409T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MORRISTOWN TN
337 PM EDT SAT APR 9 2011

THE NATIONAL WEATHER SERVICE IN MORRISTOWN HAS ISSUED A

* TORNADO WARNING FOR...
  WISE COUNTY IN SOUTHWEST VIRGINIA...
  CITY OF NORTON IN SOUTHWEST VIRGINIA...

* UNTIL 415 PM EDT

* AT 333 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES NORTH OF
  CUMBERLAND...OR 10 MILES WEST OF WHITESBURG. DOPPLER RADAR SHOWED
  THIS TORNADO MOVING SOUTHEAST AT 55 MPH.

* THIS TORNADIC STORM WILL BE NEAR...
  BIG STONE GAP AROUND 355 PM EDT.
  NORTON AND WISE AROUND 400 PM EDT.

OTHER LOCATIONS AFFECTED BY THIS TORNADIC THUNDERSTORM INCLUDE PARDEE
AND COEBURN.


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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM THIS EVENING.

&&

LAT...LON 3717 8254 3713 8254 3703 8247 3696 8235
      3697 8232 3688 8254 3688 8263 3681 8270
      3683 8275 3681 8276 3689 8288 3698 8288
      3703 8275 3712 8273 3720 8258
TIME...MOT...LOC 1937Z 296DEG 50KT 3708 8295

$$

DMG

1 follow-up statement

242 
WWUS54 KMRX 091953
SVSMRX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MORRISTOWN TN
353 PM EDT SAT APR 9 2011

VAC195-720-092015-
/O.CON.KMRX.TO.W.0014.000000T0000Z-110409T2015Z/
WISE VA-CITY OF NORTON VA-
353 PM EDT SAT APR 9 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 415 PM EDT FOR CITY OF
NORTON AND WISE COUNTIES...

AT 350 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR PARDEE...OR 8
MILES NORTHWEST OF NORTON...MOVING SOUTHEAST AT 50 MPH.

THE TORNADO WILL BE NEAR...
  NORTON AND WISE AROUND 400 PM EDT.

OTHER LOCATIONS AFFECTED BY THIS SEVERE THUNDERSTORM INCLUDE COEBURN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING ONE 
INCH SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SATURDAY EVENING
FOR SOUTHWEST NORTH CAROLINA AND EAST TENNESSEE AND SOUTHWEST
VIRGINIA.

&&

LAT...LON 3717 8254 3713 8254 3703 8247 3696 8235
      3697 8232 3688 8254 3688 8263 3681 8270
      3683 8275 3681 8276 3689 8288 3698 8288
      3703 8275 3712 8273 3720 8258
TIME...MOT...LOC 1952Z 296DEG 50KT 3699 8272

$$

17

The office that day

Everything else NWS Morristown, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 9, 12:46 AM EDT	Severe Thunderstorm Warning	MRX	Russell, Washington, Wise	59 min
Apr 9, 2:24 PM EDT	Severe Thunderstorm Warning	MRX	Russell, Washington, City of Bristol	51 min
Apr 9, 2:53 PM EDT	Tornado Warning	MRX	Washington	24 min
Apr 9, 3:41 PM EDT	Severe Thunderstorm Warning	MRX	Lee, Scott	64 min
Apr 9, 4:00 PM EDT	Tornado Warning	MRX	Lee	45 min
Apr 9, 4:03 PM EDT	Severe Thunderstorm Warning	MRX	Russell, Scott, Washington, City of Bristol	57 min

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.