Alert archive / Virginia / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 156, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 12, 2021, 2:57 PM EDT for Henry County, Patrick County, Virginia; Rockingham County, Stokes County, North Carolina. It was in force for 51 min. 2 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
- Aug 12, 2021, 2:57 PM EDT (18:57 UTC)
- Expired
- Aug 12, 2021, 3:48 PM EDT
- In force
- 51 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Rockingham County, NC, Stokes County, NC, Henry County, VA, Patrick County, VA
The radar
The Roanoke radar (KFCX), 67 km from the middle of the area, began a volume at 18:56 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 12, 3:01 PM EDT | TSTM WND DMG | Danbury, NC | MULTIPLE TREES DOWN IN THE DANBURY AREA. |
| Aug 12, 3:01 PM EDT | TSTM WND DMG | Danbury, NC | MULTIPLE TREES IN THE DANBURY AREA. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.0 hours before the alert went out and 45 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
- 1015 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 1048 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- -42 m²/s²
- 0-3 km storm-relative helicity
- -15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
569
WUUS51 KRNK 121857
SVRRNK
NCC157-169-VAC089-141-122000-
/O.NEW.KRNK.SV.W.0156.210812T1857Z-210812T2000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
257 PM EDT Thu Aug 12 2021
The National Weather Service in BLACKSBURG has issued a
* Severe Thunderstorm Warning for...
Eastern Stokes County in north central North Carolina...
Northwestern Rockingham County in north central North Carolina...
Southwestern Henry County in south central Virginia...
Southeastern Patrick County in southwestern Virginia...
* Until 400 PM EDT.
* At 257 PM EDT, a severe thunderstorm was located over Danbury,
moving northeast at 5 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...
Danbury...
Sandy Ridge...
Price...
Dillard...
Prestonville...
Ayersville...
and Hanging Rock State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds, as well as
deadly cloud to ground lightning. For your safety, move to an
interior room on the lowest floor of a sturdy building. Stay away
from windows.
Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways, standing water in low lying areas, and
minor flooding of creeks, streams, and areas of poor drainage.
Drivers are urged to slow down and use extra caution to avoid
hydroplaning.
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 3631 8019 3638 8033 3659 8021 3656 7985
TIME...MOT...LOC 1857Z 224DEG 5KT 3640 8021
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
ET1 follow-up statement
675
WWUS51 KRNK 121948
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
348 PM EDT Thu Aug 12 2021
NCC157-169-VAC089-141-121958-
/O.CAN.KRNK.SV.W.0156.000000T0000Z-210812T2000Z/
Stokes NC-Rockingham NC-Henry VA-Patrick VA-
348 PM EDT Thu Aug 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR
EASTERN STOKES...NORTHWESTERN ROCKINGHAM...SOUTHWESTERN HENRY AND
SOUTHEASTERN PATRICK COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled. However gusty winds and heavy rain are still
possible with this thunderstorm.
LAT...LON 3631 8019 3638 8033 3659 8021 3656 7985
TIME...MOT...LOC 1947Z 224DEG 5KT 3645 8015
$$
ETThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 9:54 AM EDT | Heat Advisory | RNK | Buckingham | 9 hr |
| Aug 12, 12:28 PM EDT | Special Weather Statement | RNK | Grayson | 32 min |
| Aug 12, 1:04 PM EDT | Special Weather Statement | RNK | Roanoke, City of Roanoke, City of Salem | 26 min |
| Aug 12, 1:17 PM EDT | Severe Thunderstorm Warning | RNK | Bedford, Franklin, Roanoke, City of Roanoke, City of Salem | 38 min |
| Aug 12, 1:30 PM EDT | Special Weather Statement | RNK | Alleghany | 30 min |
| Aug 12, 2:03 PM EDT | Special Weather Statement | RNK | City of Roanoke | 27 min |
| Aug 12, 2:09 PM EDT | Special Weather Statement | RNK | Pittsylvania | 36 min |
| Aug 12, 2:12 PM EDT | Severe Thunderstorm Warning | RNK | Bedford, Campbell, Franklin, Pittsylvania, Roanoke | 63 min |
| Aug 12, 2:15 PM EDT | Special Weather Statement | RNK | Alleghany, City of Covington | 30 min |
| Aug 12, 2:24 PM EDT | Special Weather Statement | RNK | Henry | 36 min |
| Aug 12, 3:18 PM EDT | Severe Thunderstorm Warning | RNK | Franklin | 29 min |
| Aug 12, 3:27 PM EDT | Severe Thunderstorm Warning | RNK | Carroll, Wythe | 48 min |
| Aug 12, 3:34 PM EDT | Special Weather Statement | RNK | City of Lexington | 26 min |
| Aug 12, 3:37 PM EDT | Severe Thunderstorm Warning | RNK | Craig, Montgomery, Roanoke | 53 min |
| Aug 12, 3:43 PM EDT | Severe Thunderstorm Warning | RNK | Franklin | 32 min |
| Aug 12, 3:51 PM EDT | Special Weather Statement | RNK | Patrick | 24 min |
| Aug 12, 3:58 PM EDT | Severe Thunderstorm Warning | RNK | Patrick | 47 min |
| Aug 12, 4:14 PM EDT | Special Weather Statement | RNK | City of Salem | 31 min |
| Aug 12, 4:14 PM EDT | Special Weather Statement | RNK | City of Salem | 31 min |
| Aug 12, 4:16 PM EDT | Severe Thunderstorm Warning | RNK | Floyd, Patrick | 29 min |
| Aug 12, 4:20 PM EDT | Severe Thunderstorm Warning | RNK | Franklin, Roanoke | 27 min |
| Aug 12, 4:24 PM EDT | Special Weather Statement | RNK | Floyd | 36 min |
| Aug 12, 4:26 PM EDT | Special Weather Statement | RNK | Grayson | 34 min |
| Aug 12, 4:44 PM EDT | Special Weather Statement | RNK | City of Danville | 31 min |
| Aug 12, 4:49 PM EDT | Severe Thunderstorm Warning | RNK | Floyd, Franklin, Patrick | 35 min |
| Aug 12, 7:42 PM EDT | Heat Advisory | RNK | Appomattox, Buckingham, Campbell, Charlotte, City of Lynchburg | 23 hr |
| Aug 12, 12:57 PM EDT | Special Weather Statement | RNK | Alleghany | 33 min |
| Aug 12, 1:22 PM EDT | Special Weather Statement | RNK | Wilkes | 23 min |
| Aug 12, 1:35 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Surry, Wilkes, Yadkin | 55 min |
| Aug 12, 1:45 PM EDT | Special Weather Statement | RNK | Watauga | 30 min |
| Aug 12, 2:18 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Ashe, Surry, Watauga, Wilkes, Yadkin | 57 min |
| Aug 12, 2:27 PM EDT | Areal Flood Advisory | RNK | Alleghany, Ashe, Surry, Watauga, Wilkes | 3 hr |
| Aug 12, 3:11 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Ashe, Watauga, Wilkes | 53 min |
| Aug 12, 3:24 PM EDT | Special Weather Statement | RNK | Surry | 36 min |
| Aug 12, 3:31 PM EDT | Severe Thunderstorm Warning | RNK | Stokes, Surry | 14 min |
| Aug 12, 3:46 PM EDT | Special Weather Statement | RNK | Ashe | 29 min |
| Aug 12, 3:53 PM EDT | Special Weather Statement | RNK | Rockingham | 37 min |
| Aug 12, 4:03 PM EDT | Areal Flood Advisory | RNK | Ashe, Wilkes | 3 hr |
| Aug 12, 4:27 PM EDT | Severe Thunderstorm Warning | RNK | Yadkin | 37 min |
Nearby
Severe Thunderstorm Warnings in Virginia, 2021Severe Thunderstorm Warnings in North Carolina, 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.