Alert archive / Virginia / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 131, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 7, 2021, 5:40 PM EDT for 4 counties in Virginia; Alleghany County, Surry County, North Carolina. It was in force for 65 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 7, 2021, 5:40 PM EDT (21:40 UTC)
- Expired
- Aug 7, 2021, 6:45 PM EDT
- In force
- 65 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Alleghany County, NC, Surry County, NC, Carroll County, VA, City of Galax, VA, Grayson County, VA, Patrick County, VA
The radar
The Roanoke radar (KFCX), 54 km from the middle of the area, began a volume at 21:42 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 7, 5:49 PM EDT | HAIL 1 | 1 Nw Barrett, NC | |
| Aug 7, 6:44 PM EDT | TSTM WND DMG | 3 Se Gladesboro, VA | ONE TREE DOWN ON GLADESBORO ROAD. TIME ESTIMATED BY RADAR. |
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, 9.7 hours before the alert went out and 94 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
- 17 J/kg
- Mixed-layer CIN
- -87 J/kg
- Mixed-layer LCL
- 543 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
952
WUUS51 KRNK 072140
SVRRNK
NCC005-171-VAC035-077-141-640-072245-
/O.NEW.KRNK.SV.W.0131.210807T2140Z-210807T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
540 PM EDT Sat Aug 7 2021
The National Weather Service in BLACKSBURG has issued a
* Severe Thunderstorm Warning for...
Northeastern Alleghany County in northwestern North Carolina...
Northwestern Surry County in northwestern North Carolina...
Southern Carroll County in southwestern Virginia...
The City of Galax in southwestern Virginia...
Southeastern Grayson County in southwestern Virginia...
Southwestern Patrick County in southwestern Virginia...
* Until 645 PM EDT.
* At 540 PM EDT, severe thunderstorms were located along a line
extending from Woodlawn to Glade Valley, moving east 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...
Galax...
Flat Rock...
Hillsville...
Sparta...
Fancy Gap...
and Ennice.
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.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
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 3649 8115 3677 8084 3674 8049 3671 8046
3672 8046 3674 8045 3673 8039 3646 8063
TIME...MOT...LOC 2140Z 271DEG 18KT 3672 8082 3649 8107
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RR4 follow-up statements
518
WWUS51 KRNK 072202
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
602 PM EDT Sat Aug 7 2021
VAC640-072211-
/O.CAN.KRNK.SV.W.0131.000000T0000Z-210807T2245Z/
City of Galax VA-
602 PM EDT Sat Aug 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR
THE CITY OF GALAX IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3649 8113 3663 8094 3663 8092 3664 8091
3669 8085 3674 8049 3671 8046 3674 8045
3673 8039 3646 8063
TIME...MOT...LOC 2201Z 271DEG 18KT 3672 8069 3649 8094
$$
NCC005-171-VAC035-077-141-072245-
/O.CON.KRNK.SV.W.0131.000000T0000Z-210807T2245Z/
Alleghany NC-Surry NC-Carroll VA-Grayson VA-Patrick VA-
602 PM EDT Sat Aug 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR
NORTHEASTERN ALLEGHANY AND NORTHWESTERN SURRY COUNTIES IN
NORTHWESTERN NORTH CAROLINA...SOUTHERN CARROLL...SOUTHEASTERN GRAYSON
AND SOUTHWESTERN PATRICK COUNTIES IN SOUTHWESTERN VIRGINIA...
At 601 PM EDT, severe thunderstorms were located along a line
extending from near Gladesboro to Barrett, moving east 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...
Sparta...
Fancy Gap...
Ennice...
Ararat...
and Cana.
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.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
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 3649 8113 3663 8094 3663 8092 3664 8091
3669 8085 3674 8049 3671 8046 3674 8045
3673 8039 3646 8063
TIME...MOT...LOC 2201Z 271DEG 18KT 3672 8069 3649 8094
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RR347
WWUS51 KRNK 072215
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
615 PM EDT Sat Aug 7 2021
NCC005-171-VAC035-077-141-072245-
/O.CON.KRNK.SV.W.0131.000000T0000Z-210807T2245Z/
Alleghany NC-Surry NC-Carroll VA-Grayson VA-Patrick VA-
615 PM EDT Sat Aug 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR
NORTHEASTERN ALLEGHANY AND NORTHWESTERN SURRY COUNTIES IN
NORTHWESTERN NORTH CAROLINA...SOUTHEASTERN CARROLL...SOUTHEASTERN
GRAYSON AND SOUTHWESTERN PATRICK COUNTIES IN SOUTHWESTERN VIRGINIA...
At 615 PM EDT, severe thunderstorms were located along a line
extending from near Fancy Gap to near Barrett, moving east at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Mount Airy...
Flat Rock...
Fancy Gap...
Ararat...
Cana...
Bottom...
and Ennice.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for LARGE HAIL AND DAMAGING WINDS. For your
safety, move to an interior room on the lowest floor of a sturdy
building. Stay away from windows.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.
&&
LAT...LON 3649 8106 3662 8091 3667 8080 3674 8049
3671 8046 3674 8045 3673 8039 3646 8063
TIME...MOT...LOC 2215Z 270DEG 12KT 3665 8075 3648 8094
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RR408
WWUS51 KRNK 072234
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
634 PM EDT Sat Aug 7 2021
NCC005-VAC077-072244-
/O.CAN.KRNK.SV.W.0131.000000T0000Z-210807T2245Z/
Alleghany NC-Grayson VA-
634 PM EDT Sat Aug 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR
NORTHEASTERN ALLEGHANY COUNTY IN NORTHWESTERN NORTH CAROLINA AND
SOUTHEASTERN GRAYSON COUNTIES IN SOUTHWESTERN VIRGINIA IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3648 8086 3667 8078 3674 8049 3671 8046
3674 8045 3673 8039 3646 8063
TIME...MOT...LOC 2234Z 271DEG 18KT 3665 8063 3648 8082
$$
NCC171-VAC035-141-072245-
/O.CON.KRNK.SV.W.0131.000000T0000Z-210807T2245Z/
Surry NC-Carroll VA-Patrick VA-
634 PM EDT Sat Aug 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR
NORTHWESTERN SURRY...SOUTHEASTERN CARROLL AND SOUTHWESTERN PATRICK
COUNTIES...
At 634 PM EDT, severe thunderstorms were located along a line
extending from near Fancy Gap to near Bottom, moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Mount Airy...
Flat Rock...
Fancy Gap...
Bottom...
Ararat...
Cana...
and Pine Ridge.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for LARGE HAIL AND DAMAGING WINDS. For your
safety, move to an interior room on the lowest floor of a sturdy
building. Stay away from windows.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.
&&
LAT...LON 3648 8086 3667 8078 3674 8049 3671 8046
3674 8045 3673 8039 3646 8063
TIME...MOT...LOC 2234Z 271DEG 18KT 3665 8063 3648 8082
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RR283
WWUS51 KRNK 072247
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
647 PM EDT Sat Aug 7 2021
NCC171-VAC035-141-072257-
/O.EXP.KRNK.SV.W.0131.000000T0000Z-210807T2245Z/
Surry NC-Carroll VA-Patrick VA-
647 PM EDT Sat Aug 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR
NORTHWESTERN SURRY...SOUTHEASTERN CARROLL AND SOUTHWESTERN PATRICK
COUNTIES HAS EXPIRED...
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been allowed to expire. However small
hail, gusty winds and heavy rain are still possible with these
thunderstorms.
LAT...LON 3648 8086 3667 8078 3674 8049 3671 8046
3674 8045 3673 8039 3646 8063
TIME...MOT...LOC 2247Z 271DEG 18KT 3665 8055 3648 8074
$$
RRThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 2:21 PM EDT | Special Weather Statement | RNK | Smyth, Tazewell | 54 min |
| Aug 7, 3:28 PM EDT | Special Weather Statement | RNK | Grayson, Wythe | 62 min |
| Aug 7, 3:40 PM EDT | Special Weather Statement | RNK | Tazewell | 65 min |
| Aug 7, 4:03 PM EDT | Special Weather Statement | RNK | Buchanan | 27 min |
| Aug 7, 4:34 PM EDT | Special Weather Statement | RNK | Grayson, Wythe | 26 min |
| Aug 7, 4:55 PM EDT | Special Weather Statement | RNK | Giles | 35 min |
| Aug 7, 5:09 PM EDT | Special Weather Statement | RNK | Giles | 36 min |
| Aug 7, 5:27 PM EDT | Special Weather Statement | RNK | Pulaski | 33 min |
| Aug 7, 5:38 PM EDT | Special Weather Statement | RNK | Carroll, City of Galax | 37 min |
| Aug 7, 6:00 PM EDT | Special Weather Statement | RNK | Pulaski | 30 min |
| Aug 7, 6:43 PM EDT | Special Weather Statement | RNK | Carroll | 32 min |
| Aug 7, 6:54 PM EDT | Severe Thunderstorm Warning | RNK | Carroll, Floyd, Patrick | 66 min |
| Aug 7, 3:54 PM EDT | Special Weather Statement | RNK | Wilkes | 51 min |
| Aug 7, 4:24 PM EDT | Severe Thunderstorm Warning | RNK | Watauga, Wilkes | 43 min |
| Aug 7, 4:39 PM EDT | Areal Flood Advisory | RNK | Wilkes | 3 hr |
| Aug 7, 4:47 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Ashe, Watauga, Wilkes | 58 min |
| Aug 7, 5:02 PM EDT | Special Weather Statement | RNK | Caldwell | 28 min |
| Aug 7, 5:24 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Surry, Wilkes | 66 min |
| Aug 7, 6:29 PM EDT | Special Weather Statement | RNK | Surry, Yadkin | 46 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.