Alert archive / North Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 183, NWS Blacksburg, VA

August 15, 2021Caswell County, North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 15, 2021, 4:28 PM EDT for Caswell County, North Carolina. It was in force for 62 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 15, 2021, 4:28 PM EDT (20:28 UTC)
Expired: Aug 15, 2021, 5:30 PM EDT
In force: 62 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Caswell County, NC

The radar

The Roanoke radar (KFCX), 107 km from the middle of the area, began a volume at 20:30 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 15, 4:37 PM EDT	TSTM WND DMG	4 Ne Camp Springs, NC	SEVERAL TREES DOWN ALONG WAGON WHEEL 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, 8.5 hours before the alert went out and 52 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 313 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 831 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 67 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

741 
WUUS51 KRNK 152028
SVRRNK
NCC033-152130-
/O.NEW.KRNK.SV.W.0183.210815T2028Z-210815T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
428 PM EDT Sun Aug 15 2021

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Caswell County in north central North Carolina...

* Until 530 PM EDT.

* At 428 PM EDT, a severe thunderstorm was located near Jericho,
  moving northeast 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...
  Yanceyville...
  Bethel...
  Providence...
  Jericho...
  Camp Springs...
  Quick...
  and Hamer.

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.

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 7949 3626 7953 3638 7953 3652 7950
      3650 7914 3624 7931
TIME...MOT...LOC 2028Z 202DEG 12KT 3631 7942 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

ET

2 follow-up statements

670 
WWUS51 KRNK 152044
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
444 PM EDT Sun Aug 15 2021

NCC033-152130-
/O.CON.KRNK.SV.W.0183.000000T0000Z-210815T2130Z/
Caswell NC-
444 PM EDT Sun Aug 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR
WESTERN CASWELL COUNTY...

At 444 PM EDT, a severe thunderstorm was located near Quick, or near
Camp Springs, moving northwest 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...
Yanceyville...
Bethel...
Providence...
Camp Springs...
Quick...
Hamer...
and Pelham.

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.

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 7925 3625 7949 3626 7953 3638 7953
      3652 7950 3651 7928 3635 7924
TIME...MOT...LOC 2044Z 138DEG 14KT 3636 7947 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

ET

120 
WWUS51 KRNK 152109
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
509 PM EDT Sun Aug 15 2021

NCC033-152130-
/O.CON.KRNK.SV.W.0183.000000T0000Z-210815T2130Z/
Caswell NC-
509 PM EDT Sun Aug 15 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR NORTHWESTERN CASWELL COUNTY...

At 509 PM EDT, a severe thunderstorm was located over Bethel, moving
north at 15 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Yanceyville...
Bethel...
Providence...
Pelham...
Quick...
and Hamer.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for hail and wind, 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.

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 3636 7933 3637 7953 3639 7953 3652 7950
      3651 7928 3645 7926
TIME...MOT...LOC 2109Z 202DEG 12KT 3644 7943 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

ET

The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 15, 3:54 PM EDT	Special Weather Statement	RNK	Wilkes	36 min
Aug 15, 4:07 PM EDT	Special Weather Statement	RNK	Caswell	38 min
Aug 15, 4:37 PM EDT	Special Weather Statement	RNK	Watauga	23 min
Aug 15, 7:43 PM EDT	Special Weather Statement	RNK	Yadkin	32 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2021 Every 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.