Alert archive / Virginia / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 430, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 13, 2011, 8:03 PM EDT for 4 counties in Virginia. It was in force for 57 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
- Jul 13, 2011, 8:03 PM EDT (00:03 UTC)
- Expired
- Jul 13, 2011, 9:00 PM EDT
- In force
- 57 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
Counties Amherst County, VA, Appomattox County, VA, Buckingham County, VA, Charlotte County, VA
The radar
The Roanoke radar (KFCX), 147 km from the middle of the area, began a volume at 00:03 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 |
|---|---|---|---|
| Jul 13, 2:21 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Roanoke, VA (KRNK), launched 00:00Z, 0.1 hours before the alert went out and 76 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
- 39 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 1342 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
298
WUUS51 KRNK 140003
SVRRNK
VAC009-011-029-037-140100-
/O.NEW.KRNK.SV.W.0430.110714T0003Z-110714T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
803 PM EDT WED JUL 13 2011
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN CHARLOTTE COUNTY IN SOUTH CENTRAL VIRGINIA
SOUTHWESTERN BUCKINGHAM COUNTY IN CENTRAL VIRGINIA
EASTERN APPOMATTOX COUNTY IN CENTRAL VIRGINIA
EASTERN AMHERST COUNTY IN CENTRAL VIRGINIA
* UNTIL 900 PM EDT.
* AT 758 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
HIXBURG...OR 8 MILES EAST OF APPOMATTOX...AND MOVING SOUTHEAST AT
30 MPH.
* LOCATIONS IMPACTED INCLUDE...
HIXBURG...
PAMPLIN CITY...
MADISONVILLE...
ABILENE...
KEYSVILLE...
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.
&&
LAT...LON 3690 7849 3758 7899 3761 7892 3755 7889
3754 7883 3763 7883 3764 7875 3734 7847
3733 7852 3737 7859 3734 7859 3726 7867
3720 7869 3720 7864 3715 7859 3715 7853
3709 7848 3708 7844
TIME...MOT...LOC 0003Z 330DEG 25KT 3733 7866
$$
162 follow-up statements
517
WWUS51 KRNK 140036
SVSRNK
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
836 PM EDT WED JUL 13 2011
VAC009-029-140046-
/O.CAN.KRNK.SV.W.0430.000000T0000Z-110714T0100Z/
BUCKINGHAM VA-AMHERST VA-
836 PM EDT WED JUL 13 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN BUCKINGHAM AND
EASTERN AMHERST COUNTIES IS CANCELLED...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
&&
LAT...LON 3690 7849 3741 7886 3734 7859 3726 7867
3720 7869 3720 7864 3715 7859 3715 7853
3709 7848 3708 7844
TIME...MOT...LOC 0036Z 331DEG 23KT 3713 7854
$$
VAC011-037-140100-
/O.CON.KRNK.SV.W.0430.000000T0000Z-110714T0100Z/
CHARLOTTE VA-APPOMATTOX VA-
836 PM EDT WED JUL 13 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR NORTHEASTERN CHARLOTTE AND SOUTHEASTERN APPOMATTOX COUNTIES...
AT 832 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR ABILENE...OR 8 MILES SOUTHWEST OF HAMPDEN SYDNEY...
MOVING SOUTHEAST AT 25 MPH.
LOCATIONS IMPACTED INCLUDE...
ABILENE...
KEYSVILLE...
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.
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.
&&
LAT...LON 3690 7849 3741 7886 3734 7859 3726 7867
3720 7869 3720 7864 3715 7859 3715 7853
3709 7848 3708 7844
TIME...MOT...LOC 0036Z 331DEG 23KT 3713 7854
$$
16242
WWUS51 KRNK 140059
SVSRNK
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
859 PM EDT WED JUL 13 2011
VAC011-037-140110-
/O.EXP.KRNK.SV.W.0430.000000T0000Z-110714T0100Z/
CHARLOTTE VA-APPOMATTOX VA-
859 PM EDT WED JUL 13 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHARLOTTE AND
SOUTHEASTERN APPOMATTOX COUNTIES EXPIRES AT 900 PM EDT...
THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS. THUS THE WARNING WILL BE ALLOWED TO EXPIRE.
TO REPORT SEVERE WEATHER...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN BLACKSBURG AT...1...8 6 6...2 1 5...4 3 2 4. ONCE AGAIN
THAT NUMBER IS 1...8 6 6...2 1 5...4 3 2 4.
LAT...LON 3690 7849 3741 7886 3734 7859 3726 7867
3720 7869 3720 7864 3715 7859 3715 7853
3709 7848 3708 7844
TIME...MOT...LOC 0100Z 331DEG 23KT 3699 7846
$$
16The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 8:31 PM EDT | Severe Thunderstorm Warning | RNK | Appomattox, Campbell, Charlotte, Halifax | 59 min |
| Jul 13, 9:29 PM EDT | Special Weather Statement | RNK | Campbell, Charlotte | 46 min |
Nearby
Severe Thunderstorm Warnings in Virginia, 2011Every severe thunderstorm warning 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.