Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 26, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Apr 9, 2021, 4:11 PM EDT for Surry County, North Carolina. It was in force for 49 min. 5 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
- Apr 9, 2021, 4:11 PM EDT (20:11 UTC)
- Expired
- Apr 9, 2021, 5:00 PM EDT
- In force
- 49 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Surry County, NC
The radar
The Roanoke radar (KFCX), 66 km from the middle of the area, began a volume at 20:12 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 |
|---|---|---|---|
| Apr 9, 4:12 PM EDT | HAIL 0.88 | 2 Nnw Flat Rock, NC | |
| Apr 9, 4:12 PM EDT | HAIL 1 | 1 N Mount Airy, NC | |
| Apr 9, 4:20 PM EDT | HAIL 1 | 1 Se Woodville, NC | |
| Apr 9, 4:26 PM EDT | HAIL 0.88 | 2 Nw Flat Rock, NC | A SOLID COATING OF NICKEL TO DIME SIZE HAIL ON THE GROUND ALL AROUND THE MOUNT AIRY AREA. |
| Apr 9, 4:26 PM EDT | HAIL 0.88 | 2 Nw Flat Rock, NC | CORRECTS PREVIOUS HAIL REPORT FROM 2 NW FLAT ROCK. A SOLID COATING OF NICKEL TO DIME SIZE HAIL ON THE NORTHEAST SIDE OF MOUNT AIRY. |
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 |
|---|---|---|---|
| Apr 9, 3:38 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.2 hours before the alert went out and 75 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
- 361 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 1047 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
641
WUUS51 KRNK 092011
SVRRNK
NCC171-092100-
/O.NEW.KRNK.SV.W.0026.210409T2011Z-210409T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
411 PM EDT Fri Apr 9 2021
The National Weather Service in BLACKSBURG has issued a
* Severe Thunderstorm Warning for...
Northeastern Surry County in northwestern North Carolina...
* Until 500 PM EDT.
* At 410 PM EDT, a severe thunderstorm was located over Toast, or
over Mount Airy, 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...
Woodville...
Toast...
Westfield...
and White Plains.
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.
This storm is beginning to indicate rotation and could produce a
tornado at any moment.
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 3648 8072 3656 8067 3655 8044 3644 8044
3639 8045
TIME...MOT...LOC 2010Z 265DEG 18KT 3650 8063
TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
$$
RAB1 follow-up statement
946
WWUS51 KRNK 092057
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
457 PM EDT Fri Apr 9 2021
NCC171-092107-
/O.EXP.KRNK.SV.W.0026.000000T0000Z-210409T2100Z/
Surry NC-
457 PM EDT Fri Apr 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR
NORTHEASTERN SURRY COUNTY WILL EXPIRE AT 500 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
A Severe Thunderstorm Watch remains in effect until midnight EDT for
north central and northwestern North Carolina...and southwestern
Virginia.
When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.
LAT...LON 3648 8072 3656 8067 3655 8044 3644 8044
3639 8045
TIME...MOT...LOC 2057Z 265DEG 18KT 3652 8034
$$
RABThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 3:28 PM EDT | Severe Thunderstorm Warning | RNK | Surry | 47 min |
| Apr 9, 4:20 PM EDT | Tornado Warning | RNK | Surry | 25 min |
| Apr 9, 4:35 PM EDT | Severe Thunderstorm Warning | RNK | Stokes | 55 min |
| Apr 9, 6:00 PM EDT | Special Weather Statement | RNK | Rockingham | 45 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.