Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 143, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 11, 2021, 2:17 PM EDT for Stokes County, Surry County, North Carolina; Patrick County, Virginia. It was in force for 58 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
- Aug 11, 2021, 2:17 PM EDT (18:17 UTC)
- Expired
- Aug 11, 2021, 3:15 PM EDT
- In force
- 58 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Stokes County, NC, Surry County, NC, Patrick County, VA
The radar
The Roanoke radar (KFCX), 52 km from the middle of the area, began a volume at 18:20 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 |
|---|---|---|---|
| Aug 11, 2:47 PM EDT | TSTM WND DMG | Penns Store, VA | TREE DOWN IN PENNS STORE. |
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 |
|---|---|---|---|
| Aug 11, 2:02 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.3 hours before the alert went out and 70 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
- 653 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 1352 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- -21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
014
WUUS51 KRNK 111817
SVRRNK
NCC169-171-VAC141-111915-
/O.NEW.KRNK.SV.W.0143.210811T1817Z-210811T1915Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
217 PM EDT Wed Aug 11 2021
The National Weather Service in BLACKSBURG has issued a
* Severe Thunderstorm Warning for...
Northeastern Surry County in northwestern North Carolina...
Stokes County in north central North Carolina...
Southern Patrick County in southwestern Virginia...
* Until 315 PM EDT.
* At 217 PM EDT, a severe thunderstorm was located over Woodville, or
near Ararat, moving northeast at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Mount Airy...
Flat Rock...
Stuart...
Danbury...
Ararat...
Francisco...
and Sandy Ridge.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. For your
safety, move to an interior room on the lowest floor of a sturdy
building. Stay away from windows.
When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.
&&
LAT...LON 3645 8062 3665 8055 3664 8054 3665 8050
3665 8049 3666 8049 3665 8006 3652 8005
3632 8011
TIME...MOT...LOC 1817Z 246DEG 17KT 3654 8049
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
VFJ4 follow-up statements
776
WWUS51 KRNK 111833
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
233 PM EDT Wed Aug 11 2021
NCC169-171-VAC141-111915-
/O.CON.KRNK.SV.W.0143.000000T0000Z-210811T1915Z/
Surry NC-Stokes NC-Patrick VA-
233 PM EDT Wed Aug 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR
NORTHEASTERN SURRY...NORTHERN STOKES AND SOUTHERN PATRICK COUNTIES...
At 233 PM EDT, a severe thunderstorm was located near Collinstown, or
near Francisco, moving east at 10 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Flat Rock...
Stuart...
Danbury...
Ararat...
Francisco...
Sandy Ridge...
and Critz.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for LARGE HAIL AND DAMAGING WINDS. For your
safety, move to an interior room on the lowest floor of a sturdy
building. Stay away from windows.
When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.
&&
LAT...LON 3647 8059 3664 8054 3665 8050 3665 8049
3666 8049 3665 8006 3652 8005 3634 8010
TIME...MOT...LOC 1833Z 276DEG 9KT 3656 8043
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
VFJ855
WWUS51 KRNK 111844
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
244 PM EDT Wed Aug 11 2021
NCC169-171-VAC141-111915-
/O.CON.KRNK.SV.W.0143.000000T0000Z-210811T1915Z/
Surry NC-Stokes NC-Patrick VA-
244 PM EDT Wed Aug 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR
NORTHEASTERN SURRY...NORTHERN STOKES AND SOUTHEASTERN PATRICK
COUNTIES...
At 244 PM EDT, a severe thunderstorm was located near Collinstown, or
near Francisco, moving northeast at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Stuart...
Danbury...
Francisco...
Sandy Ridge...
Critz...
Woodville...
and Collinstown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for LARGE HAIL AND DAMAGING WINDS. For your
safety, move to an interior room on the lowest floor of a sturdy
building. Stay away from windows.
When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.
&&
LAT...LON 3646 8054 3666 8047 3665 8006 3652 8005
3634 8010
TIME...MOT...LOC 1844Z 246DEG 17KT 3658 8037
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
VFJ882
WWUS51 KRNK 111857
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
257 PM EDT Wed Aug 11 2021
NCC171-111907-
/O.CAN.KRNK.SV.W.0143.000000T0000Z-210811T1915Z/
Surry NC-
257 PM EDT Wed Aug 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR
NORTHEASTERN SURRY COUNTY IS CANCELLED...
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
south central, southwestern and west central Virginia.
LAT...LON 3652 8025 3665 8025 3665 8006 3652 8005
TIME...MOT...LOC 1857Z 258DEG 26KT 3658 8010
$$
NCC169-VAC141-111915-
/O.CON.KRNK.SV.W.0143.000000T0000Z-210811T1915Z/
Stokes NC-Patrick VA-
257 PM EDT Wed Aug 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR
NORTHEASTERN STOKES AND SOUTHEASTERN PATRICK COUNTIES...
At 257 PM EDT, a severe thunderstorm was located over Penns Store, or
near Spencer, moving east at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Patrick Springs...
Penns Store...
and Critz.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for LARGE HAIL AND DAMAGING WINDS. For your
safety, move to an interior room on the lowest floor of a sturdy
building. Stay away from windows.
When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.
&&
LAT...LON 3652 8025 3665 8025 3665 8006 3652 8005
TIME...MOT...LOC 1857Z 258DEG 26KT 3658 8010
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
VFJ592
WWUS51 KRNK 111910
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
310 PM EDT Wed Aug 11 2021
NCC169-VAC141-111920-
/O.EXP.KRNK.SV.W.0143.000000T0000Z-210811T1915Z/
Stokes NC-Patrick VA-
310 PM EDT Wed Aug 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR
NORTHEASTERN STOKES AND SOUTHEASTERN PATRICK COUNTIES WILL EXPIRE AT
315 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
south central, southwestern and west central Virginia.
LAT...LON 3652 8025 3665 8025 3665 8006 3652 8005
TIME...MOT...LOC 1910Z 281DEG 7KT 3657 8006
$$
VFJThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 2:25 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Surry, Wilkes, Yadkin | 65 min |
| Aug 11, 2:53 PM EDT | Severe Thunderstorm Warning | RNK | Rockingham | 67 min |
| Aug 11, 3:05 PM EDT | Areal Flood Advisory | RNK | Alleghany, Wilkes | 3 hr |
| Aug 11, 3:09 PM EDT | Special Weather Statement | RNK | Stokes | 36 min |
| Aug 11, 3:27 PM EDT | Severe Thunderstorm Warning | RNK | Wilkes, Yadkin | 33 min |
| Aug 11, 3:31 PM EDT | Special Weather Statement | RNK | Yadkin | 29 min |
| Aug 11, 3:46 PM EDT | Severe Thunderstorm Warning | RNK | Yadkin | 47 min |
| Aug 11, 4:07 PM EDT | Special Weather Statement | RNK | Yadkin | 38 min |
| Aug 11, 4:39 PM EDT | Areal Flood Advisory | RNK | Yadkin | 3 hr |
| Aug 11, 2:03 PM EDT | Special Weather Statement | RNK | Patrick | 27 min |
| Aug 11, 2:06 PM EDT | Special Weather Statement | RNK | City of Lynchburg | 39 min |
| Aug 11, 2:09 PM EDT | Special Weather Statement | RNK | Roanoke, City of Roanoke, City of Salem | 51 min |
| Aug 11, 2:16 PM EDT | Severe Thunderstorm Warning | RNK | Bedford, Botetourt, Craig, Franklin, Montgomery, Roanoke and 2 more | 59 min |
| Aug 11, 3:01 PM EDT | Special Weather Statement | RNK | Bedford | 29 min |
| Aug 11, 3:13 PM EDT | Special Weather Statement | RNK | Franklin | 32 min |
| Aug 11, 3:18 PM EDT | Severe Thunderstorm Warning | RNK | Amherst, Bedford, Campbell, City of Lynchburg | 40 min |
| Aug 11, 3:40 PM EDT | Severe Thunderstorm Warning | RNK | Bedford, Franklin | 34 min |
| Aug 11, 3:50 PM EDT | Special Weather Statement | RNK | Franklin | 25 min |
| Aug 11, 4:09 PM EDT | Severe Thunderstorm Warning | RNK | Bedford, Campbell, Pittsylvania | 36 min |
| Aug 11, 4:43 PM EDT | Special Weather Statement | RNK | Halifax | 32 min |
| Aug 11, 4:58 PM EDT | Severe Thunderstorm Warning | RNK | Halifax, Pittsylvania | 35 min |
Nearby
Severe Thunderstorm Warnings in North Carolina, 2021Severe Thunderstorm Warnings in Virginia, 2021Every severe thunderstorm warning in 2021
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.