Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 128, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 7, 2021, 4:24 PM EDT for Watauga County, Wilkes County, North Carolina. It was in force for 43 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, 4:24 PM EDT (20:24 UTC)
- Expired
- Aug 7, 2021, 5:07 PM EDT
- In force
- 43 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Watauga County, NC, Wilkes County, NC
The radar
The Roanoke radar (KFCX), 144 km from the middle of the area, began a volume at 20:26 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, 4:48 PM EDT | TSTM WND DMG | 2 Ne Elkville, NC | SEVERAL LARGE LIMBS DOWN. ALSO NICKEL SIZED HAIL. |
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, 8.4 hours before the alert went out and 133 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.
588
WUUS51 KRNK 072024
SVRRNK
NCC189-193-072130-
/O.NEW.KRNK.SV.W.0128.210807T2024Z-210807T2130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
424 PM EDT Sat Aug 7 2021
The National Weather Service in BLACKSBURG has issued a
* Severe Thunderstorm Warning for...
Southwestern Wilkes County in northwestern North Carolina...
Southeastern Watauga County in northwestern North Carolina...
* Until 530 PM EDT.
* At 424 PM EDT, a severe thunderstorm was located over Elkville, or
10 miles west of Boomer, moving east at 15 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
North Wilkesboro...
Wilkesboro...
Boomer...
Darby...
Mulberry...
Wilkesboro Reservoir...
and Buck.
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 3602 8135 3604 8139 3607 8141 3607 8144
3609 8146 3609 8147 3610 8148 3610 8151
3612 8155 3619 8153 3624 8116 3603 8117
3604 8119 3603 8123 3600 8133
TIME...MOT...LOC 2024Z 270DEG 12KT 3610 8143
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RR3 follow-up statements
822
WWUS51 KRNK 072053
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
453 PM EDT Sat Aug 7 2021
NCC189-072101-
/O.CAN.KRNK.SV.W.0128.000000T0000Z-210807T2130Z/
Watauga NC-
453 PM EDT Sat Aug 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR
SOUTHEASTERN WATAUGA COUNTY IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3600 8133 3602 8135 3604 8139 3607 8141
3607 8144 3609 8146 3610 8151 3612 8154
3616 8148 3616 8117 3603 8117 3604 8119
3603 8123
TIME...MOT...LOC 2051Z 323DEG 14KT 3603 8138
$$
NCC193-072130-
/O.CON.KRNK.SV.W.0128.000000T0000Z-210807T2130Z/
Wilkes NC-
453 PM EDT Sat Aug 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR
SOUTHWESTERN WILKES COUNTY...
At 451 PM EDT, a severe thunderstorm was located over Elkville, or 7
miles west of Boomer, moving southeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Public reported strong winds gusts and hail in the Ferguson
area.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Wilkesboro...
Boomer...
Darby...
Wilkesboro Reservoir...
Elkville...
Moravian Falls...
and Cricket.
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 3600 8133 3602 8135 3604 8139 3607 8141
3607 8144 3609 8146 3610 8151 3612 8154
3616 8148 3616 8117 3603 8117 3604 8119
3603 8123
TIME...MOT...LOC 2051Z 323DEG 14KT 3603 8138
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RR768
WWUS51 KRNK 072101
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
501 PM EDT Sat Aug 7 2021
NCC193-072130-
/O.CON.KRNK.SV.W.0128.000000T0000Z-210807T2130Z/
Wilkes NC-
501 PM EDT Sat Aug 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR
SOUTHWESTERN WILKES COUNTY...
At 501 PM EDT, a severe thunderstorm was located near Elkville, or
near Boomer, moving east at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Public.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Boomer...
Elkville...
and Moravian Falls.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for LARGE HAIL AND DAMAGING WINDS. For your
safety, move to an interior room on the lowest floor of a sturdy
building. Stay away from windows.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.
&&
LAT...LON 3600 8133 3602 8135 3604 8139 3607 8141
3607 8144 3609 8146 3609 8117 3603 8117
3604 8119 3603 8123
TIME...MOT...LOC 2101Z 270DEG 12KT 3603 8134
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
RR589
WWUS51 KRNK 072107
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
507 PM EDT Sat Aug 7 2021
NCC193-072116-
/O.CAN.KRNK.SV.W.0128.000000T0000Z-210807T2130Z/
Wilkes NC-
507 PM EDT Sat Aug 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR
SOUTHWESTERN WILKES COUNTY 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 heavy rain is still possible with this
thunderstorm.
LAT...LON 3600 8133 3602 8135 3604 8139 3607 8141
3607 8144 3609 8146 3609 8117 3603 8117
3604 8119 3603 8123
TIME...MOT...LOC 2104Z 270DEG 12KT 3603 8132
$$
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, 4:34 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, 5:24 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Surry, Wilkes | 66 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.