Alert archive / Virginia / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 9, NWS Blacksburg, VA

February 24, 20126 counties in Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Feb 24, 2012, 1:53 PM EST for 6 counties in Virginia. It was in force for 57 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: Feb 24, 2012, 1:53 PM EST (18:53 UTC)
Expired: Feb 24, 2012, 2:50 PM EST
In force: 57 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon

Counties Amherst County, VA, Appomattox County, VA, Bedford County, VA, Buckingham County, VA, Campbell County, VA, City of Lynchburg, VA

The radar

The Roanoke radar (KFCX), 145 km from the middle of the area, began a volume at 18:56 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
Feb 24, 1:56 PM EST	HAIL 0.75	3 Sse Forest, VA

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

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 6.9 hours before the alert went out and 73 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: 14 J/kg
Mixed-layer CIN: -75 J/kg
Mixed-layer LCL: 746 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 387 m²/s²
0-3 km storm-relative helicity: 512 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.

936 
WUUS51 KRNK 241853
SVRRNK
VAC009-011-019-029-031-680-242000-
/O.NEW.KRNK.SV.W.0009.120224T1853Z-120224T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
153 PM EST FRI FEB 24 2012

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CITY OF LYNCHBURG IN CENTRAL VIRGINIA
  NORTHERN CAMPBELL COUNTY IN CENTRAL VIRGINIA
  BUCKINGHAM COUNTY IN CENTRAL VIRGINIA
  EASTERN BEDFORD COUNTY IN SOUTH CENTRAL VIRGINIA
  APPOMATTOX COUNTY IN CENTRAL VIRGINIA
  SOUTHEASTERN AMHERST COUNTY IN CENTRAL VIRGINIA

* UNTIL 300 PM EST.

* AT 152 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM BENT CREEK TO STONEWALL TO 7 MILES SOUTH OF TIMBERLAKE...OR
  ALONG A LINE EXTENDING FROM BENT CREEK TO CONCORD TO EVINGTON...AND
  MOVING EAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BOCOCK...
  OAKVILLE...
  WINGINA...
  APPOMATTOX NATIONAL HISTORIC PARK...
  TOGA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

WHEN IT IS SAFE TO DO SO...PLEASE SEND YOUR REPORTS OF QUARTER OR
LARGER SIZED HAIL...AS WELL AS WIND DAMAGE...INCLUDING TREES OR LARGE
LIMBS DOWNED BY CALLING THE NATIONAL WEATHER SERVICE TOLL FREE AT...
1...8 6 6...2 1 5...4 3 2 4.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY AFTERNOON
FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA AND
SOUTHEAST WEST VIRGINIA.

&&

LAT...LON 3760 7827 3734 7846 3733 7852 3737 7859
      3734 7859 3725 7867 3722 7873 3723 7878
      3721 7880 3722 7924 3737 7933 3746 7914
      3765 7895 3756 7890 3754 7883 3763 7883
      3764 7872 3767 7871 3767 7824
TIME...MOT...LOC 1853Z 270DEG 45KT 3760 7886 3741 7900
          3723 7924

$$

WP

3 follow-up statements

373 
WWUS51 KRNK 241916
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
216 PM EST FRI FEB 24 2012

VAC019-680-241926-
/O.CAN.KRNK.SV.W.0009.000000T0000Z-120224T2000Z/
CITY OF LYNCHBURG VA-BEDFORD VA-
216 PM EST FRI FEB 24 2012

...THE SEVERE THUNDERSTORM WARNING FOR THE CITY OF LYNCHBURG...
EASTERN BEDFORD COUNTY IS CANCELLED...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY AFTERNOON
FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA AND
SOUTHEAST WEST VIRGINIA.

&&

LAT...LON 3760 7827 3734 7846 3733 7852 3737 7859
      3734 7859 3726 7866 3724 7873 3726 7909
      3754 7905 3762 7896 3763 7894 3756 7890
      3754 7883 3763 7883 3764 7872 3766 7871
      3767 7865 3767 7824
TIME...MOT...LOC 1916Z 253DEG 62KT 3765 7844 3745 7858
          3730 7886

$$

VAC009-011-029-031-242000-
/O.CON.KRNK.SV.W.0009.000000T0000Z-120224T2000Z/
CAMPBELL VA-BUCKINGHAM VA-APPOMATTOX VA-AMHERST VA-
216 PM EST FRI FEB 24 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EST
FOR NORTHERN CAMPBELL...BUCKINGHAM...APPOMATTOX AND SOUTHEASTERN
AMHERST COUNTIES...

AT 213 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES NORTHEAST OF BUCKINGHAM TO TOGA TO SPOUT
SPRING...OR ALONG A LINE EXTENDING FROM 7 MILES NORTH OF DILLWYN TO
12 MILES NORTHEAST OF APPOMATTOX TO CONCORD...MOVING EAST AT 60 MPH.

LOCATIONS IMPACTED INCLUDE...
  ANDERSONVILLE...
  GOLD HILL...
  HIXBURG...
  SHEPPARDS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER. 

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. ONCE AGAIN THAT NUMBER IS 1...8 6 6...2 1 5...4 3 2 4.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY AFTERNOON
FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA AND
SOUTHEAST WEST VIRGINIA.

&&

LAT...LON 3760 7827 3734 7846 3733 7852 3737 7859
      3734 7859 3726 7866 3724 7873 3726 7909
      3754 7905 3762 7896 3763 7894 3756 7890
      3754 7883 3763 7883 3764 7872 3766 7871
      3767 7865 3767 7824
TIME...MOT...LOC 1916Z 253DEG 62KT 3765 7844 3745 7858
          3730 7886

$$

WP

966 
WWUS51 KRNK 241928
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
228 PM EST FRI FEB 24 2012

VAC009-241938-
/O.CAN.KRNK.SV.W.0009.000000T0000Z-120224T2000Z/
AMHERST VA-
228 PM EST FRI FEB 24 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN AMHERST COUNTY IS
CANCELLED...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY AFTERNOON
FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA AND
SOUTHEAST WEST VIRGINIA.

&&

LAT...LON 3760 7827 3734 7846 3733 7852 3737 7859
      3734 7859 3726 7866 3724 7873 3726 7900
      3752 7887 3754 7883 3763 7883 3764 7872
      3766 7871 3767 7865 3767 7824
TIME...MOT...LOC 1928Z 253DEG 62KT 3771 7819 3751 7833
          3727 7882

$$

VAC011-029-031-242000-
/O.CON.KRNK.SV.W.0009.000000T0000Z-120224T2000Z/
CAMPBELL VA-BUCKINGHAM VA-APPOMATTOX VA-
228 PM EST FRI FEB 24 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EST
FOR EASTERN CAMPBELL...BUCKINGHAM AND APPOMATTOX COUNTIES...

AT 227 PM EST...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 11 MILES NORTHEAST OF GOLD HILL
TO 7 MILES EAST OF DILLWYN TO EVERGREEN...OR ALONG A LINE EXTENDING
FROM FORK UNION TO 6 MILES WEST OF CUMBERLAND TO 6 MILES NORTH OF RED
HOUSE...MOVING EAST AT 55 MPH.

LOCATIONS IMPACTED INCLUDE...
  EVERGREEN...
  PAMPLIN CITY...
  SHEPPARDS...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER.
REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...
DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY
HEAVY RAIN.

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. ONCE AGAIN THAT NUMBER IS 1...8 6 6...2 1 5...4 3 2 4.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY AFTERNOON
FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA AND
SOUTHEAST WEST VIRGINIA.

&&

LAT...LON 3760 7827 3734 7846 3733 7852 3737 7859
      3734 7859 3726 7866 3724 7873 3726 7900
      3752 7887 3754 7883 3763 7883 3764 7872
      3766 7871 3767 7865 3767 7824
TIME...MOT...LOC 1928Z 253DEG 62KT 3771 7819 3751 7833
          3727 7882

$$

WP

183 
WWUS51 KRNK 241950
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
250 PM EST FRI FEB 24 2012

VAC011-029-031-242000-
/O.CAN.KRNK.SV.W.0009.000000T0000Z-120224T2000Z/
CAMPBELL VA-BUCKINGHAM VA-APPOMATTOX VA-
250 PM EST FRI FEB 24 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN CAMPBELL...BUCKINGHAM
AND APPOMATTOX COUNTIES IS CANCELLED...

THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND
EXITED THE WARNED AREA. THEREFORE...THE WARNING HAS BEEN CANCELLED.

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

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY AFTERNOON
FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA AND
SOUTHEAST WEST VIRGINIA.

LAT...LON 3760 7827 3734 7846 3733 7852 3737 7859
      3734 7859 3726 7866 3724 7873 3726 7900
      3752 7887 3754 7883 3763 7883 3764 7872
      3766 7871 3767 7865 3767 7824
TIME...MOT...LOC 1950Z 253DEG 62KT 3782 7773 3762 7787
          3738 7836

$$

WP

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 24, 6:00 AM EST	Special Weather Statement	RNK	Smyth	30 min
Feb 24, 6:14 AM EST	Special Weather Statement	RNK	Alleghany, City of Covington	31 min
Feb 24, 9:55 AM EST	Special Weather Statement	RNK	Bland, Giles	35 min
Feb 24, 11:36 AM EST	Severe Thunderstorm Warning	RNK	Bland, Giles, Tazewell	32 min
Feb 24, 12:06 PM EST	Severe Thunderstorm Warning	RNK	Alleghany, Botetourt, City of Covington	39 min
Feb 24, 12:33 PM EST	Severe Thunderstorm Warning	RNK	Alleghany, Amherst, Bedford, Botetourt, Craig, Rockbridge and 1 more	42 min
Feb 24, 12:41 PM EST	Severe Thunderstorm Warning	RNK	Patrick	34 min
Feb 24, 12:57 PM EST	Severe Thunderstorm Warning	RNK	Amherst, Bedford, Botetourt, Floyd, Franklin, Montgomery and 3 more	63 min
Feb 24, 1:42 PM EST	Severe Thunderstorm Warning	RNK	Bedford, Campbell, Franklin	20 min
Feb 24, 1:46 PM EST	Severe Thunderstorm Warning	RNK	Floyd, Franklin	44 min
Feb 24, 2:12 PM EST	Special Weather Statement	RNK	Amherst	33 min
Feb 24, 2:18 PM EST	Severe Thunderstorm Warning	RNK	Bedford, Campbell, Franklin, Pittsylvania	42 min
Feb 24, 2:42 PM EST	Special Weather Statement	RNK	Henry, City of Martinsville	48 min
Feb 24, 2:47 PM EST	Severe Thunderstorm Warning	RNK	Franklin, Henry, Pittsylvania, City of Martinsville	19 min
Feb 24, 3:04 PM EST	Special Weather Statement	RNK	City of Danville	41 min
Feb 24, 3:10 PM EST	Special Weather Statement	RNK	Buckingham, City of Lynchburg	35 min
Feb 24, 3:45 PM EST	Special Weather Statement	RNK	City of Danville	45 min
Feb 24, 4:13 PM EST	Special Weather Statement	RNK	Charlotte	47 min
Feb 24, 4:29 PM EST	Special Weather Statement	RNK	Halifax	16 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2012 Every severe thunderstorm warning in 2012

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.