Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 130, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 7, 2021, 5:24 PM EDT for Alleghany County, Surry County, Wilkes County, North Carolina. It was in force for 66 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 7, 2021, 5:24 PM EDT (21:24 UTC)
- Expired
- Aug 7, 2021, 6:30 PM EDT
- In force
- 66 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, Wilkes County, NC
The radar
The Roanoke radar (KFCX), 105 km from the middle of the area, began a volume at 21:26 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, 5:26 PM EDT | HAIL 1 | 3 Ssw Whitehead, NC |
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, 9.4 hours before the alert went out and 113 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.
543
WUUS51 KRNK 072124
SVRRNK
NCC005-171-193-072230-
/O.NEW.KRNK.SV.W.0130.210807T2124Z-210807T2230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
524 PM EDT Sat Aug 7 2021
The National Weather Service in BLACKSBURG has issued a
* Severe Thunderstorm Warning for...
Southeastern Alleghany County in northwestern North Carolina...
Western Surry County in northwestern North Carolina...
Northeastern Wilkes County in northwestern North Carolina...
* Until 630 PM EDT.
* At 524 PM EDT, a severe thunderstorm was located over Doughton
Park, or near Laurel Springs, 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...
Elkin...
Sparta...
Traphill...
Mountain Park...
Bottom...
Mc Grady...
and Roaring Gap.
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 this storm, 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 3634 8128 3636 8127 3636 8125 3639 8125
3650 8118 3649 8075 3624 8086 3623 8087
TIME...MOT...LOC 2124Z 278DEG 14KT 3642 8117
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RR4 follow-up statements
563
WWUS51 KRNK 072155
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
555 PM EDT Sat Aug 7 2021
NCC005-171-193-072230-
/O.CON.KRNK.SV.W.0130.000000T0000Z-210807T2230Z/
Alleghany NC-Surry NC-Wilkes NC-
555 PM EDT Sat Aug 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR
SOUTHEASTERN ALLEGHANY...SOUTHWESTERN SURRY AND NORTHEASTERN WILKES
COUNTIES IN NORTHWESTERN NORTH CAROLINA...
At 555 PM EDT, a severe thunderstorm was located over Stone Mountain
State Park, or near Traphill, moving east at 15 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Elkin...
Traphill...
Mountain Park...
Bottom...
Roaring Gap...
Stone Mountain State Park...
and Abshers.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for DAMAGING WINDS. For your safety, move to an
interior room on the lowest floor of a sturdy building. Stay away
from windows.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.
&&
LAT...LON 3632 8120 3649 8114 3649 8075 3624 8086
3623 8087
TIME...MOT...LOC 2155Z 276DEG 11KT 3641 8105
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RR700
WWUS51 KRNK 072214
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
614 PM EDT Sat Aug 7 2021
NCC005-171-193-072230-
/O.CON.KRNK.SV.W.0130.000000T0000Z-210807T2230Z/
Alleghany NC-Surry NC-Wilkes NC-
614 PM EDT Sat Aug 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR
SOUTHEASTERN ALLEGHANY...SOUTHWESTERN SURRY AND NORTHEASTERN WILKES
COUNTIES IN NORTHWESTERN NORTH CAROLINA...
At 613 PM EDT, a severe thunderstorm was located near Benham, or near
Traphill, moving southeast at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Elkin...
Traphill...
Mountain Park...
Bottom...
Roaring Gap...
Stone Mountain State Park...
and Pleasant Hill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for 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 this storm, 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 3630 8111 3649 8114 3649 8075 3624 8086
3623 8087
TIME...MOT...LOC 2213Z 304DEG 15KT 3629 8098
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RR341
WWUS51 KRNK 072221
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
621 PM EDT Sat Aug 7 2021
NCC005-171-193-072230-
/O.CON.KRNK.SV.W.0130.000000T0000Z-210807T2230Z/
Alleghany NC-Surry NC-Wilkes NC-
621 PM EDT Sat Aug 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR
SOUTHEASTERN ALLEGHANY...SOUTHWESTERN SURRY AND NORTHEASTERN WILKES
COUNTIES IN NORTHWESTERN NORTH CAROLINA...
At 620 PM EDT, a severe thunderstorm was located over Benham, or near
Ronda, moving east at 15 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Elkin...
Traphill...
Mountain Park...
Bottom...
Roaring Gap...
Pleasant Hill...
and State Road.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for DAMAGING WINDS. For your safety, move to an
interior room on the lowest floor of a sturdy building. Stay away
from windows.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.
&&
LAT...LON 3629 8109 3649 8103 3649 8075 3624 8086
3623 8087
TIME...MOT...LOC 2220Z 278DEG 14KT 3629 8094
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RR938
WWUS51 KRNK 072229
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
629 PM EDT Sat Aug 7 2021
NCC005-171-193-072239-
/O.EXP.KRNK.SV.W.0130.000000T0000Z-210807T2230Z/
Alleghany NC-Surry NC-Wilkes NC-
629 PM EDT Sat Aug 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR
SOUTHEASTERN ALLEGHANY...SOUTHWESTERN SURRY AND NORTHEASTERN WILKES
COUNTIES IN NORTHWESTERN NORTH CAROLINA WILL EXPIRE AT 630 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire. However heavy rain is still possible with this
thunderstorm.
LAT...LON 3629 8109 3649 8103 3649 8075 3624 8086
3623 8087
TIME...MOT...LOC 2229Z 278DEG 14KT 3629 8090
$$
RRThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 3:28 PM EDT | Special Weather Statement | RNK | Ashe | 62 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, 4:34 PM EDT | Special Weather Statement | RNK | Alleghany, Watauga | 26 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, 5:38 PM EDT | Special Weather Statement | RNK | Alleghany | 37 min |
| Aug 7, 5:40 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Surry | 65 min |
| Aug 7, 6:29 PM EDT | Special Weather Statement | RNK | Surry, Yadkin | 46 min |
| Aug 7, 6:54 PM EDT | Severe Thunderstorm Warning | RNK | Stokes, Surry, Yadkin | 66 min |
Nearby
Severe 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.