Alert archive / Virginia / Tornado Warnings in 2007

Tornado Warning 2, NWS Blacksburg, VA

October 24, 2007Pittsylvania County, City of Danville, Virginia

NWS Blacksburg, VA issued this tornado warning at Oct 24, 2007, 10:30 AM EDT for Pittsylvania County, City of Danville, Virginia. It was in force for 30 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: Oct 24, 2007, 10:30 AM EDT (14:30 UTC)
Expired: Oct 24, 2007, 11:00 AM EDT
In force: 30 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon

Counties City of Danville, VA, Pittsylvania County, VA

The radar

The Roanoke radar (KFCX), 81 km from the middle of the area, began a volume at 14:29 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 nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 2.5 hours before the alert went out and 58 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: 5 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 598 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 95 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.

000 
WFUS51 KRNK 241430
TORRNK
VAC143-590-241500-
/O.NEW.KRNK.TO.W.0002.071024T1430Z-071024T1500Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
1030 AM EDT WED OCT 24 2007

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN CITY OF DANVILLE IN SOUTH CENTRAL VIRGINIA
  SOUTHWESTERN PITTSYLVANIA COUNTY IN SOUTH CENTRAL VIRGINIA

* UNTIL 1100 AM EDT.

* AT 1025 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR WESTOVER
  HILLS...OR ABOUT 6 MILES NORTH OF MAYFIELD...MOVING NORTH AT 25
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  WESTOVER HILLS...
  SWANSONVILLE...
  DRY FORK...
  AND CHATHAM.

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.

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.

PLEASE RELAY SEVERE WEATHER REPORTS TO THE NATIONAL WEATHER SERVICE
BY CALLING TOLL FREE...1...8 6 6...2 1 5...4 3 2 4.

LAT...LON 3683 7930 3655 7943 3655 7957 3655 7958
      3656 7963 3689 7953
TIME...MOT...LOC 1430Z 196DEG 25KT 3664 7952

$$

AMS

2 follow-up statements

000 
WWUS51 KRNK 241446
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1046 AM EDT WED OCT 24 2007

VAC143-241500-
/O.CON.KRNK.TO.W.0002.000000T0000Z-071024T1500Z/
PITTSYLVANIA VA-
1046 AM EDT WED OCT 24 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 AM EDT FOR CENTRAL
PITTSYLVANIA COUNTY...

AT 1042 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR DRY FORK...OR
ABOUT 6 MILES WEST OF BLAIRS...MOVING NORTH AT 35 MPH.

THE TORNADO WILL BE NEAR...
  CHATHAM BY 1055 AM EDT.

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

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.

LAT...LON 3683 7930 3664 7939 3664 7950 3668 7959
      3689 7953
TIME...MOT...LOC 1446Z 202DEG 31KT 3674 7946

$$

AMS

000 
WWUS51 KRNK 241502
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1101 AM EDT WED OCT 24 2007

VAC143-241511-
/O.EXP.KRNK.TO.W.0002.000000T0000Z-071024T1500Z/
PITTSYLVANIA VA-
1101 AM EDT WED OCT 24 2007

...THE TORNADO WARNING FOR CENTRAL PITTSYLVANIA COUNTY EXPIRES AT
1100 AM EDT...

WHILE THE STORM CONTINUES TO BE SEVERE...THE ROTATION HAS WEAKENED.  
MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT 
OR SMALL INTERIOR ROOM UNTIL THE STORM PASSES. LARGE HAIL AND 
DAMAGING WINDS ARE STILL EXPECTED WITH THIS STORM.

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 3683 7930 3664 7939 3664 7950 3668 7959
      3689 7953
TIME...MOT...LOC 1446Z 202DEG 31KT 3674 7946

$$

AMS

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 24, 9:34 AM EDT	Severe Thunderstorm Warning	RNK	Pittsylvania, City of Danville	56 min
Oct 24, 10:07 AM EDT	Tornado Warning	RNK	Pittsylvania	23 min
Oct 24, 10:28 AM EDT	Severe Thunderstorm Warning	RNK	Pittsylvania, City of Danville	62 min
Oct 24, 11:17 AM EDT	Severe Thunderstorm Warning	RNK	Campbell, Pittsylvania	43 min
Oct 24, 4:27 PM EDT	Tornado Warning	RNK	Franklin, Henry, Pittsylvania	33 min
Oct 24, 5:26 PM EDT	Flash Flood Warning	RNK	Henry, City of Martinsville	3 hr
Oct 24, 5:48 PM EDT	Flash Flood Warning	RNK	Franklin	3 hr

Nearby

Tornado Warnings in Virginia, 2007 Every tornado warning in 2007 Tornadoes in 2007

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.