Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 191, NWS Blacksburg, VA

August 28, 2021Appomattox County, Campbell County, Charlotte County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 28, 2021, 4:46 PM EDT for Appomattox County, Campbell County, Charlotte County, Virginia. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 28, 2021, 4:46 PM EDT (20:46 UTC)
Expired: Aug 28, 2021, 5:30 PM EDT
In force: 44 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Appomattox County, VA, Campbell County, VA, Charlotte County, VA

The radar

The Roanoke radar (KFCX), 133 km from the middle of the area, began a volume at 20:47 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.

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 8.8 hours before the alert went out and 64 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: 329 J/kg
Mixed-layer CIN: -126 J/kg
Mixed-layer LCL: 1018 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

740 
WUUS51 KRNK 282046
SVRRNK
VAC011-031-037-282130-
/O.NEW.KRNK.SV.W.0191.210828T2046Z-210828T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
446 PM EDT Sat Aug 28 2021

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  South central Appomattox County in central Virginia...
  Northwestern Charlotte County in south central Virginia...
  East central Campbell County in central Virginia...

* Until 530 PM EDT.

* At 446 PM EDT, a severe thunderstorm was located over Red House,
  moving south at 5 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Phenix...
  Red House...
  Wren...
  and Madisonville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for 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 3709 7870 3707 7884 3717 7891 3727 7885
      3724 7868
TIME...MOT...LOC 2046Z 014DEG 5KT 3720 7879 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RAB

2 follow-up statements

533 
WWUS51 KRNK 282101
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
501 PM EDT Sat Aug 28 2021

VAC031-282110-
/O.CAN.KRNK.SV.W.0191.000000T0000Z-210828T2130Z/
Campbell VA-
501 PM EDT Sat Aug 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CAMPBELL 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 3709 7870 3707 7884 3717 7884 3720 7883
      3721 7884 3723 7884 3725 7871 3724 7869
      3719 7869
TIME...MOT...LOC 2100Z 341DEG 8KT 3718 7877 

$$

VAC011-037-282130-
/O.CON.KRNK.SV.W.0191.000000T0000Z-210828T2130Z/
Appomattox VA-Charlotte VA-
501 PM EDT Sat Aug 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR SOUTH CENTRAL APPOMATTOX AND NORTHWESTERN CHARLOTTE COUNTIES...

At 500 PM EDT, a severe thunderstorm was located over Red House,
moving south at 10 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Phenix...
Red House...
and Madisonville.

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.

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 3709 7870 3707 7884 3717 7884 3720 7883
      3721 7884 3723 7884 3725 7871 3724 7869
      3719 7869
TIME...MOT...LOC 2100Z 341DEG 8KT 3718 7877 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

RAB

410 
WWUS51 KRNK 282121
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
521 PM EDT Sat Aug 28 2021

VAC011-037-282131-
/O.EXP.KRNK.SV.W.0191.000000T0000Z-210828T2130Z/
Appomattox VA-Charlotte VA-
521 PM EDT Sat Aug 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
SOUTH CENTRAL APPOMATTOX AND NORTHWESTERN CHARLOTTE COUNTIES WILL
EXPIRE AT 530 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

LAT...LON 3709 7870 3707 7884 3717 7884 3720 7883
      3721 7884 3723 7884 3725 7871 3724 7869
      3719 7869
TIME...MOT...LOC 2121Z 014DEG 5KT 3715 7877 

$$

RAB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 2:22 PM EDT	Special Weather Statement	RNK	Montgomery	38 min
Aug 28, 3:20 PM EDT	Special Weather Statement	RNK	Campbell	25 min
Aug 28, 3:30 PM EDT	Special Weather Statement	RNK	Craig	30 min
Aug 28, 3:45 PM EDT	Severe Thunderstorm Warning	RNK	Halifax, Pittsylvania	30 min
Aug 28, 4:24 PM EDT	Special Weather Statement	RNK	Halifax	36 min
Aug 28, 4:26 PM EDT	Special Weather Statement	RNK	Appomattox	34 min
Aug 28, 5:24 PM EDT	Special Weather Statement	RNK	Bath	51 min
Aug 28, 5:28 PM EDT	Special Weather Statement	RNK	City of Covington	32 min
Aug 28, 6:21 PM EDT	Special Weather Statement	RNK	Bath	24 min
Aug 28, 6:46 PM EDT	Special Weather Statement	RNK	Bath	29 min
Aug 28, 7:02 PM EDT	Special Weather Statement	RNK	Charlotte	28 min
Aug 28, 7:33 PM EDT	Special Weather Statement	RNK	Charlotte	27 min

Nearby

Severe Thunderstorm Warnings in Virginia, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.