Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 90, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 17, 2021, 5:00 PM EDT for Caswell County, Rockingham County, North Carolina. It was in force for 60 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
- Jul 17, 2021, 5:00 PM EDT (21:00 UTC)
- Expired
- Jul 17, 2021, 6:00 PM EDT
- In force
- 60 min
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Caswell County, NC, Rockingham County, NC
The radar
The Roanoke radar (KFCX), 107 km from the middle of the area, began a volume at 21:02 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 |
|---|---|---|---|
| Jul 17, 5:20 PM EDT | TSTM WND DMG | 6 Wsw Camp Springs, NC | ADDITIONAL TREES REPORTED DOWN IN THE WILLIAMSBURG AREA. |
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, 9.0 hours before the alert went out and 42 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
- 966 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 843 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
287
WUUS51 KRNK 172100
SVRRNK
NCC033-157-172200-
/O.NEW.KRNK.SV.W.0090.210717T2100Z-210717T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
500 PM EDT Sat Jul 17 2021
The National Weather Service in BLACKSBURG has issued a
* Severe Thunderstorm Warning for...
Southeastern Rockingham County in north central North Carolina...
Southern Caswell County in north central North Carolina...
* Until 600 PM EDT.
* At 459 PM EDT, severe thunderstorms were located along a line
extending from near Camp Springs to near Greensboro, 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...
Reidsville...
Yanceyville...
Jericho...
Prospect Hill...
Camp Springs...
Leasburg...
and Topnot.
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.
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 3625 7975 3637 7963 3642 7915 3624 7915
3625 7953 3624 7953 3624 7957
TIME...MOT...LOC 2059Z 260DEG 18KT 3632 7953 3602 7990
HAIL...1.00IN
WIND...60MPH
$$
RR1 follow-up statement
774
WWUS51 KRNK 172148
SVSRNK
Severe Weather Statement
National Weather Service BLACKSBURG VA
548 PM EDT Sat Jul 17 2021
NCC157-172157-
/O.CAN.KRNK.SV.W.0090.000000T0000Z-210717T2200Z/
Rockingham NC-
548 PM EDT Sat Jul 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR
SOUTHEASTERN ROCKINGHAM COUNTY IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
When it is safe to do so, please send your reports of hail of any
size, as well as reports of any wind damage, including downed trees
or large limbs, to the National Weather Service by calling toll free
at 1...8 6 6...2 1 5...4 3 2 4. Reports and pictures can also be
shared on the National Weather Service Blacksburg Facebook page and
on Twitter.
LAT...LON 3625 7926 3625 7953 3638 7953 3642 7915
3624 7915 3624 7926
TIME...MOT...LOC 2147Z 260DEG 18KT 3636 7924 3606 7961
$$
NCC033-172200-
/O.CON.KRNK.SV.W.0090.000000T0000Z-210717T2200Z/
Caswell NC-
548 PM EDT Sat Jul 17 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT
FOR
SOUTHERN CASWELL COUNTY...
At 547 PM EDT, severe thunderstorms were located along a line
extending from Topnot to near McLeansville, moving east at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Fire Department confirmed several trees down earlier in
Rockingham County when storms moved through the county near
Williamsburg.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Yanceyville...
Jericho...
Prospect Hill...
Camp Springs...
Leasburg...
Topnot...
and Hightowers.
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 3625 7926 3625 7953 3638 7953 3642 7915
3624 7915 3624 7926
TIME...MOT...LOC 2147Z 260DEG 18KT 3636 7924 3606 7961
HAIL...1.00IN
WIND...60MPH
$$
RRThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 1:06 PM EDT | Special Weather Statement | RNK | Surry | 39 min |
| Jul 17, 1:45 PM EDT | Severe Thunderstorm Warning | RNK | Surry | 43 min |
| Jul 17, 2:11 PM EDT | Areal Flood Advisory | RNK | Surry | 3 hr |
| Jul 17, 2:49 PM EDT | Special Weather Statement | RNK | Caswell | 26 min |
| Jul 17, 2:56 PM EDT | Severe Thunderstorm Warning | RNK | Caswell, Rockingham | 49 min |
| Jul 17, 3:42 PM EDT | Special Weather Statement | RNK | Caswell, Rockingham | 48 min |
| Jul 17, 3:48 PM EDT | Severe Thunderstorm Warning | RNK | Caswell, Rockingham | 57 min |
| Jul 17, 3:52 PM EDT | Areal Flood Advisory | RNK | Caswell, Rockingham | 3 hr |
| Jul 17, 4:00 PM EDT | Severe Thunderstorm Warning | RNK | Caswell, Rockingham | 60 min |
| Jul 17, 4:11 PM EDT | Flash Flood Warning | RNK | Caswell, Rockingham | 3 hr |
| Jul 17, 5:10 PM EDT | Special Weather Statement | RNK | Wilkes | 35 min |
| Jul 17, 5:39 PM EDT | Special Weather Statement | RNK | Wilkes | 36 min |
| Jul 17, 6:02 PM EDT | Special Weather Statement | RNK | Caswell | 13 min |
| Jul 17, 6:08 PM EDT | Special Weather Statement | RNK | Alleghany, Surry, Watauga, Wilkes | 67 min |
| Jul 17, 6:50 PM EDT | Areal Flood Advisory | RNK | Caswell, Rockingham | 7 hr |
| Jul 17, 7:05 PM EDT | Special Weather Statement | RNK | Alleghany, Surry | 40 min |
| Jul 17, 7:10 PM EDT | Areal Flood Advisory | RNK | Alleghany, Surry | 3 hr |
| Jul 17, 7:34 PM EDT | Special Weather Statement | RNK | Yadkin | 26 min |
| Jul 17, 7:44 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Rockingham, Stokes, Surry, Wilkes, Yadkin | 61 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.