Alert archive / North Carolina / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 21, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Mar 23, 2011, 9:27 PM EDT for Caswell County, Rockingham County, Stokes County, North Carolina. It was in force for 63 min. 6 reports 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
- Mar 23, 2011, 9:27 PM EDT (01:27 UTC)
- Expired
- Mar 23, 2011, 10:30 PM EDT
- In force
- 63 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
Counties Caswell County, NC, Rockingham County, NC, Stokes County, NC
The radar
The Roanoke radar (KFCX), 87 km from the middle of the area, began a volume at 01:29 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 23, 9:30 PM EDT | HAIL 0.7 | Wentworth, NC | |
| Mar 23, 9:53 PM EDT | HAIL 0.7 | Wentworth, NC | |
| Mar 23, 10:00 PM EDT | TSTM WND DMG | N Sandy Ridge, NC | TREE DOWN ON HIGHWAY 704 WEST |
| Mar 23, 10:05 PM EDT | TSTM WND DMG | 5 Nw Prospect Hill, NC | TREE DOWN ON GUN POOLE ROAD AND HIGHWAY 119 |
| Mar 23, 10:08 PM EDT | TSTM WND DMG | 1 Nw Prospect Hill, NC | TREE DOWN ON DAVE SMITH ROAD |
| Mar 23, 10:08 PM EDT | TSTM WND DMG | 5 Wsw Walnut Cove, NC | TREE DOWN ON HIGHWAY 65 NORTH IN GERMANTOWN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 23, 3:45 PM EDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 1.5 hours before the alert went out and 31 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
- 88 J/kg
- Mixed-layer CIN
- -77 J/kg
- Mixed-layer LCL
- 816 m above ground
- 0-6 km bulk shear
- 81 kt
- 0-1 km storm-relative helicity
- 249 m²/s²
- 0-3 km storm-relative helicity
- 410 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
824
WUUS51 KRNK 240127
SVRRNK
NCC033-157-169-240230-
/O.NEW.KRNK.SV.W.0021.110324T0127Z-110324T0230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
927 PM EDT WED MAR 23 2011
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CASWELL COUNTY IN NORTH CENTRAL NORTH CAROLINA
ROCKINGHAM COUNTY IN NORTH CENTRAL NORTH CAROLINA
EASTERN STOKES COUNTY IN NORTH CENTRAL NORTH CAROLINA
* UNTIL 1030 PM EDT.
* AT 925 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING ONE INCH DIAMETER HAIL...
AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED
NEAR BELLEWS LAKE...OR NEAR BELEWS CREEK...AND MOVING EAST AT 55
MPH.
* LOCATIONS IMPACTED INCLUDE...
BELLEWS LAKE...
ELLISBORO...
BETHANY...
MONROETON...
REIDSVILLE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
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.
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 1000 PM EDT WEDNESDAY EVENING
FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA AND
SOUTHEAST WEST VIRGINIA.
&&
LAT...LON 3626 8027 3654 8026 3654 7914 3624 7915
3624 7968
TIME...MOT...LOC 0127Z 267DEG 49KT 3630 7999
$$
DW4 follow-up statements
754
WWUS51 KRNK 240143
SVSRNK
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
943 PM EDT WED MAR 23 2011
NCC033-157-169-240230-
/O.CON.KRNK.SV.W.0021.000000T0000Z-110324T0230Z/
CASWELL NC-ROCKINGHAM NC-STOKES NC-
943 PM EDT WED MAR 23 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT
FOR EASTERN STOKES...ROCKINGHAM AND CASWELL COUNTIES...
AT 938 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR WENTWORTH...MOVING
EAST AT 60 MPH. ANOTHER STORM WAS NEAR MAYODAN...ALSO MOVING EAST AT
60 MPH.
LOCATIONS IMPACTED INCLUDE...
REIDSVILLE...
LAWSONVILLE...
QUICK...
BETHEL...
HAMER...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER.
REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...
DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY
HEAVY RAIN.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT WEDNESDAY EVENING
FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA AND
SOUTHEAST WEST VIRGINIA.
&&
LAT...LON 3626 8027 3654 8026 3654 7914 3624 7915
3624 7968
TIME...MOT...LOC 0143Z 258DEG 50KT 3637 7969
$$
DW862
WWUS51 KRNK 240159
SVSRNK
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
959 PM EDT WED MAR 23 2011
NCC033-157-169-240230-
/O.CON.KRNK.SV.W.0021.000000T0000Z-110324T0230Z/
CASWELL NC-ROCKINGHAM NC-STOKES NC-
959 PM EDT WED MAR 23 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT
FOR EASTERN STOKES...ROCKINGHAM AND CASWELL COUNTIES...
AT 955 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED
NEAR QUICK...OR 6 MILES WEST OF YANCEYVILLE...MOVING EAST AT 55 MPH.
LOCATIONS IMPACTED INCLUDE...
YANCEYVILLE...
TOPNOT...
LEASBURG...
SEMORA...
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.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT WEDNESDAY EVENING
FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA AND
SOUTHEAST WEST VIRGINIA.
&&
LAT...LON 3626 8027 3654 8026 3654 7914 3624 7915
3624 7968
TIME...MOT...LOC 0159Z 269DEG 49KT 3638 7938
$$
DW985 WWUS51 KRNK 240218 SVSRNK SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BLACKSBURG VA 1018 PM EDT WED MAR 23 2011 NCC033-169-240228- /O.CAN.KRNK.SV.W.0021.000000T0000Z-110324T0230Z/ CASWELL NC-STOKES NC- 1018 PM EDT WED MAR 23 2011 ...THE SEVERE THUNDERSTORM WARNING FOR EASTERN STOKES AND CASWELL COUNTIES IS CANCELLED... PRECAUTIONARY/PREPAREDNESS ACTIONS... && LAT...LON 3625 8003 3643 8003 3642 7952 3624 7953 TIME...MOT...LOC 0218Z 269DEG 49KT 3627 7989 $$ NCC157-240230- /O.CON.KRNK.SV.W.0021.000000T0000Z-110324T0230Z/ ROCKINGHAM NC- 1018 PM EDT WED MAR 23 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT FOR SOUTHERN ROCKINGHAM COUNTY... AT 1016 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF PRODUCING ONE INCH DIAMETER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR ELLISBORO...OR 7 MILES EAST OF BELEWS CREEK...MOVING EAST AT 55 MPH. 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. && LAT...LON 3625 8003 3643 8003 3642 7952 3624 7953 TIME...MOT...LOC 0218Z 269DEG 49KT 3627 7989 $$ DW
371 WWUS51 KRNK 240226 SVSRNK SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BLACKSBURG VA 1026 PM EDT WED MAR 23 2011 NCC157-240236- /O.EXP.KRNK.SV.W.0021.000000T0000Z-110324T0230Z/ ROCKINGHAM NC- 1026 PM EDT WED MAR 23 2011 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN ROCKINGHAM COUNTY EXPIRES AT 1030 PM EDT... THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS. THUS THE WARNING WILL BE ALLOWED TO EXPIRE. TO REPORT SEVERE WEATHER...PLEASE CONTACT THE NATIONAL WEATHER SERVICE IN BLACKSBURG AT...1...8 6 6...2 1 5...4 3 2 4. LAT...LON 3625 8003 3643 8003 3642 7952 3624 7953 TIME...MOT...LOC 0226Z 269DEG 49KT 3627 7975 $$ DW
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 8:34 PM EDT | Severe Thunderstorm Warning | RNK | Caswell, Rockingham, Stokes | 56 min |
| Mar 23, 9:02 PM EDT | Tornado Warning | RNK | Caswell, Rockingham | 21 min |
| Mar 24, 1:34 AM EDT | Special Weather Statement | RNK | Alleghany, Ashe, Surry, Watauga, Wilkes | 56 min |
| Mar 24, 3:45 AM EDT | Wind Advisory | RNK | Alleghany, Ashe, Surry, Watauga, Wilkes | 8 hr |
Nearby
Severe Thunderstorm Warnings in North Carolina, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.