Alert archive / North Carolina / Tornado Warnings in 2021
Tornado Warning 12, NWS Blacksburg, VA
NWS Blacksburg, VA issued this tornado warning at Aug 17, 2021, 2:18 PM EDT for Caswell County, North Carolina. It was in force for 32 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 17, 2021, 2:18 PM EDT (18:18 UTC)
- Expired
- Aug 17, 2021, 2:50 PM EDT
- In force
- 32 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.0 in
County Caswell County, NC
The radar
The Raleigh/Durham radar (KRAX), 109 km from the middle of the area, began a volume at 18:23 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 17, 2:18 PM EDT | TSTM WND DMG | 2 Sw Topnot, NC | ONE TREE AND SEVERAL BRANCHES DOWN ON BURTON CHAPEL ROAD. |
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, 6.3 hours before the alert went out and 63 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
- 522 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 593 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
The text
As transmitted.
630
WFUS51 KRNK 171818
TORRNK
NCC033-171900-
/O.NEW.KRNK.TO.W.0012.210817T1818Z-210817T1900Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service BLACKSBURG VA
218 PM EDT Tue Aug 17 2021
The National Weather Service in BLACKSBURG has issued a
* Tornado Warning for...
Caswell County in north central North Carolina...
* Until 300 PM EDT.
* At 218 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Hightowers, or near Jericho, moving northwest at
25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* Locations impacted include...
Yanceyville...
Bethel...
Providence...
Prospect Hill...
Blanch...
Leasburg...
and Hamer.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
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 3625 7933 3653 7951 3654 7951 3654 7923
3635 7914 3624 7915
TIME...MOT...LOC 1818Z 146DEG 23KT 3633 7928
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
RAB2 follow-up statements
897
WWUS51 KRNK 171835
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
235 PM EDT Tue Aug 17 2021
NCC033-171900-
/O.CON.KRNK.TO.W.0012.000000T0000Z-210817T1900Z/
Caswell NC-
235 PM EDT Tue Aug 17 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 300 PM EDT FOR
NORTHERN CASWELL COUNTY...
At 234 PM EDT, a shower capable of producing a tornado was located
over Hamer, or over Yanceyville, moving north at 25 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Yanceyville...
Bethel...
Providence...
Gatewood...
Blanch...
Hamer...
and Pelham.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways, standing water in low lying areas, and
minor flooding of creeks, streams, and areas of poor drainage.
Drivers are urged to slow down and use extra caution to avoid
hydroplaning.
When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.
&&
LAT...LON 3634 7935 3653 7951 3654 7951 3654 7923
3637 7918 3633 7924
TIME...MOT...LOC 1834Z 158DEG 23KT 3643 7931
TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN
$$
RR700
WWUS51 KRNK 171850
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
250 PM EDT Tue Aug 17 2021
NCC033-171859-
/O.CAN.KRNK.TO.W.0012.000000T0000Z-210817T1900Z/
Caswell NC-
250 PM EDT Tue Aug 17 2021
...THE TORNADO WARNING FOR
NORTHERN CASWELL COUNTY IS CANCELLED...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
A Tornado Watch remains in effect until 700 PM EDT for north central
North Carolina...and south central and west central Virginia.
LAT...LON 3634 7935 3653 7951 3654 7951 3654 7923
3637 7918 3633 7924
TIME...MOT...LOC 1849Z 146DEG 23KT 3651 7938
$$
RRThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 3:37 AM EDT | Flash Flood Watch | RNK | Alleghany, Ashe, Surry, Watauga, Wilkes | 24 hr |
| Aug 17, 11:48 AM EDT | Tornado Warning | RNK | Wilkes | 42 min |
| Aug 17, 12:35 PM EDT | Tornado Warning | RNK | Wilkes, Yadkin | 40 min |
| Aug 17, 12:46 PM EDT | Special Weather Statement | RNK | Wilkes | 44 min |
| Aug 17, 1:19 PM EDT | Tornado Warning | RNK | Wilkes | 41 min |
| Aug 17, 1:48 PM EDT | Tornado Warning | RNK | Alleghany, Wilkes | 42 min |
| Aug 17, 1:58 PM EDT | Special Weather Statement | RNK | Alleghany, Caswell, Rockingham, Stokes, Surry, Yadkin | 32 min |
| Aug 17, 2:43 PM EDT | Tornado Warning | RNK | Rockingham, Stokes | 32 min |
| Aug 17, 4:35 PM EDT | Special Weather Statement | RNK | Surry | 25 min |
| Aug 17, 5:05 PM EDT | Special Weather Statement | RNK | Alleghany | 40 min |
| Aug 17, 6:50 PM EDT | Special Weather Statement | RNK | Watauga | 25 min |
| Aug 17, 7:13 PM EDT | Flash Flood Warning | RNK | Watauga | 8 hr |
| Aug 17, 7:54 PM EDT | Special Weather Statement | RNK | Ashe | 36 min |
Nearby
Tornado Warnings in North Carolina, 2021Every tornado warning in 2021Tornadoes 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.