Alert archive / Virginia / Tornado Warnings in 2011
Tornado Warning 66, NWS Blacksburg, VA
NWS Blacksburg, VA issued this tornado warning at Sep 5, 2011, 6:42 PM EDT for Halifax County, Virginia. It was in force for 33 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
- Sep 5, 2011, 6:42 PM EDT (22:42 UTC)
- Expired
- Sep 5, 2011, 7:15 PM EDT
- In force
- 33 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
County Halifax County, VA
The radar
The Raleigh/Durham radar (KRAX), 115 km from the middle of the area, began a volume at 22:45 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 |
|---|---|---|---|
| Sep 5, 6:29 PM EDT | Tornado Watch | SPC | 10 hr |
The nearest sounding before it
Roanoke, VA (KRNK), launched 12:00Z, 10.7 hours before the alert went out and 88 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.
- Mixed-layer CAPE
- 144 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 588 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
742
WFUS51 KRNK 052242
TORRNK
VAC083-052315-
/O.NEW.KRNK.TO.W.0066.110905T2242Z-110905T2315Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
642 PM EDT MON SEP 5 2011
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHEASTERN HALIFAX COUNTY IN SOUTH CENTRAL VIRGINIA
* UNTIL 715 PM EDT.
* AT 637 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR ALTON...OR
NEAR TURBEVILLE...MOVING NORTHEAST AT 25 MPH.
* LOCATIONS IMPACTED INCLUDE...
ALTON...
CLUSTER SPRINGS...
SOUTH BOSTON...
DRYBURG...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
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.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 AM EDT TUESDAY MORNING
FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA.
&&
LAT...LON 3669 7867 3667 7870 3663 7870 3654 7884
3654 7903 3665 7905 3686 7878 3675 7868
3674 7869 3671 7867 3670 7864 3668 7863
TIME...MOT...LOC 2242Z 228DEG 23KT 3659 7895
$$
AMS1 follow-up statement
492
WWUS51 KRNK 052256
SVSRNK
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
656 PM EDT MON SEP 5 2011
VAC083-052315-
/O.CON.KRNK.TO.W.0066.000000T0000Z-110905T2315Z/
HALIFAX VA-
656 PM EDT MON SEP 5 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM EDT FOR
SOUTHEASTERN HALIFAX COUNTY...
AT 651 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR CLUSTER SPRINGS...
OR NEAR SOUTH BOSTON...MOVING NORTHEAST AT 25 MPH.
LOCATIONS IMPACTED INCLUDE...
CLUSTER SPRINGS...
SOUTH BOSTON...
DRYBURG...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 AM EDT TUESDAY MORNING
FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA.
&&
LAT...LON 3668 7863 3669 7867 3667 7870 3663 7870
3654 7884 3658 7896 3667 7902 3686 7878
3675 7868 3674 7869 3671 7867 3670 7864
TIME...MOT...LOC 2256Z 230DEG 23KT 3665 7886
$$The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 9:30 PM EDT | Special Weather Statement | RNK | Bath | 30 min |
| Sep 5, 4:48 PM EDT | Tornado Warning | RNK | Henry, Pittsylvania | 27 min |
| Sep 5, 5:31 PM EDT | Tornado Warning | RNK | Carroll, Grayson, City of Galax | 29 min |
| Sep 5, 6:31 PM EDT | Special Weather Statement | RNK | Botetourt, Carroll, Craig, Floyd, Montgomery, Roanoke and 2 more | 59 min |
| Sep 5, 6:34 PM EDT | Special Weather Statement | RNK | Bedford, Campbell, Charlotte, Franklin, Halifax, Pittsylvania | 56 min |
| Sep 5, 6:54 PM EDT | Tornado Warning | RNK | Carroll, Floyd, Patrick | 36 min |
| Sep 5, 7:14 PM EDT | Tornado Warning | RNK | Bland, Pulaski, Wythe | 31 min |
| Sep 5, 7:16 PM EDT | Tornado Warning | RNK | Charlotte, Halifax | 29 min |
| Sep 5, 7:25 PM EDT | Special Weather Statement | RNK | Botetourt | 35 min |
| Sep 5, 7:40 PM EDT | Tornado Warning | RNK | Bland, Giles, Montgomery, Pulaski, Wythe, City of Radford | 35 min |
| Sep 5, 7:57 PM EDT | Areal Flood Advisory | RNK | Roanoke, City of Roanoke, City of Salem | 3 hr |
Nearby
Tornado Warnings in Virginia, 2011Every tornado warning in 2011Tornadoes 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.