Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 193, NWS Blacksburg, VA

August 29, 2021Amherst County, Appomattox County, Buckingham County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 29, 2021, 12:07 AM EDT for Amherst County, Appomattox County, Buckingham County, Virginia. It was in force for 53 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 29, 2021, 12:07 AM EDT (04:07 UTC)
Expired: Aug 29, 2021, 1:00 AM EDT
In force: 53 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Amherst County, VA, Appomattox County, VA, Buckingham County, VA

The radar

The Roanoke radar (KFCX), 144 km from the middle of the area, began a volume at 04:11 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 29, 12:11 AM EDT	TSTM WND DMG	3 N Buckingham, VA	A TREE DOWN ALONG SLATE RIVER MILL ROAD NEAR THE SLATE RIVER FARM ENTRANCE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Roanoke, VA (KRNK), launched 00:00Z, 4.1 hours before the alert went out and 74 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: 210 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 2017 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 16 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

078 
WUUS51 KRNK 290407
SVRRNK
VAC009-011-029-290500-
/O.NEW.KRNK.SV.W.0193.210829T0407Z-210829T0500Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
1207 AM EDT Sun Aug 29 2021

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Appomattox County in central Virginia...
  Buckingham County in central Virginia...
  Amherst County in central Virginia...

* Until 100 AM EDT.

* At 1207 AM EDT, severe thunderstorms were located along a line
  extending from near Forks Of Buffalo to near Appomattox National
  Historic Park, moving northeast at 25 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...
  Buckingham...
  Amherst...
  Appomattox...
  Dillwyn...
  Forks Of Buffalo...
  Clifford...
  and Bent Creek.

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 3746 7838 3740 7859 3730 7882 3740 7900
      3743 7902 3742 7904 3760 7937 3779 7911
      3778 7907 3771 7906 3770 7898 3755 7890
      3753 7883 3763 7882 3764 7872 3770 7869
      3768 7864 3772 7865 3775 7862 3757 7830
TIME...MOT...LOC 0407Z 230DEG 21KT 3765 7919 3740 7873 

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

$$

RR

1 follow-up statement

814 
WWUS51 KRNK 290448
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
1248 AM EDT Sun Aug 29 2021

VAC009-011-029-290500-
/O.CON.KRNK.SV.W.0193.000000T0000Z-210829T0500Z/
Appomattox VA-Buckingham VA-Amherst VA-
1248 AM EDT Sun Aug 29 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM EDT
FOR
CENTRAL APPOMATTOX...CENTRAL BUCKINGHAM AND SOUTHEASTERN AMHERST
COUNTIES...

At 1247 AM EDT, severe thunderstorms were located along a line
extending from Falconerville to near Appomattox National Historic
Park, moving southeast at 10 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...
Buckingham...
Amherst...
Appomattox...
Dillwyn...
Clifford...
Bent Creek...
and Appomattox National Historic Park.

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 3746 7838 3740 7859 3731 7881 3741 7897
      3742 7901 3743 7902 3742 7903 3756 7918
      3770 7898 3755 7890 3753 7883 3763 7882
      3757 7830
TIME...MOT...LOC 0447Z 292DEG 8KT 3754 7908 3734 7878 

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

$$

RR

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 28, 9:01 PM EDT	Special Weather Statement	RNK	Rockbridge	29 min
Aug 28, 9:33 PM EDT	Special Weather Statement	RNK	City of Buena Vista	42 min
Aug 28, 10:22 PM EDT	Special Weather Statement	RNK	Buckingham	38 min
Aug 28, 10:28 PM EDT	Special Weather Statement	RNK	City of Buena Vista	32 min
Aug 28, 10:57 PM EDT	Special Weather Statement	RNK	Rockbridge	33 min
Aug 28, 11:05 PM EDT	Areal Flood Advisory	RNK	Rockbridge	3 hr
Aug 28, 11:09 PM EDT	Special Weather Statement	RNK	Buckingham	36 min
Aug 28, 11:11 PM EDT	Special Weather Statement	RNK	Buckingham	49 min
Aug 28, 11:27 PM EDT	Special Weather Statement	RNK	Rockbridge	48 min
Aug 28, 11:30 PM EDT	Special Weather Statement	RNK	Appomattox	30 min
Aug 28, 11:38 PM EDT	Areal Flood Advisory	RNK	Rockbridge	3 hr
Aug 28, 11:44 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Rockbridge	43 min
Aug 28, 11:49 PM EDT	Flash Flood Warning	RNK	Amherst, Rockbridge	6 hr
Aug 28, 11:51 PM EDT	Special Weather Statement	RNK	Amherst	24 min
Aug 29, 12:02 AM EDT	Special Weather Statement	RNK	Appomattox	43 min
Aug 29, 12:05 AM EDT	Special Weather Statement	RNK	Buckingham	40 min
Aug 29, 12:23 AM EDT	Special Weather Statement	RNK	Amherst	37 min
Aug 29, 12:30 AM EDT	Severe Thunderstorm Warning	RNK	Amherst, Bedford	60 min
Aug 29, 12:39 AM EDT	Areal Flood Advisory	RNK	Amherst, Appomattox, Bedford	3 hr
Aug 29, 12:59 AM EDT	Severe Thunderstorm Warning	RNK	Amherst, Appomattox	61 min
Aug 29, 1:41 AM EDT	Special Weather Statement	RNK	Appomattox	34 min
Aug 29, 2:00 PM EDT	Special Weather Statement	RNK	Bath	30 min
Aug 29, 2:18 PM EDT	Special Weather Statement	RNK	Bath	27 min
Aug 29, 2:21 PM EDT	Special Weather Statement	RNK	Alleghany	24 min
Aug 29, 2:50 PM EDT	Severe Thunderstorm Warning	RNK	Bath, Rockbridge	55 min
Aug 29, 3:23 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Bath, Botetourt	67 min
Aug 29, 3:39 PM EDT	Severe Thunderstorm Warning	RNK	Bath, Rockbridge	51 min
Aug 29, 3:48 PM EDT	Special Weather Statement	RNK	Alleghany, City of Covington	27 min
Aug 29, 4:01 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Botetourt, City of Covington	44 min
Aug 29, 4:19 PM EDT	Special Weather Statement	RNK	Rockbridge, City of Lexington	26 min
Aug 29, 4:33 PM EDT	Special Weather Statement	RNK	City of Covington	27 min
Aug 29, 4:42 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Botetourt, Craig	44 min
Aug 29, 5:24 PM EDT	Special Weather Statement	RNK	Giles	36 min
Aug 29, 5:30 PM EDT	Special Weather Statement	RNK	Montgomery	30 min
Aug 29, 6:03 PM EDT	Special Weather Statement	RNK	Montgomery	27 min
Aug 29, 6:11 PM EDT	Special Weather Statement	RNK	Giles	19 min
Aug 29, 6:17 PM EDT	Special Weather Statement	RNK	Giles	28 min
Aug 29, 6:41 PM EDT	Special Weather Statement	RNK	Montgomery, City of Radford	34 min
Aug 29, 6:42 PM EDT	Special Weather Statement	RNK	City of Roanoke, City of Salem	33 min
Aug 29, 6:57 PM EDT	Areal Flood Advisory	RNK	Montgomery	3 hr
Aug 29, 7:02 PM EDT	Severe Thunderstorm Warning	RNK	Giles	27 min
Aug 29, 7:03 PM EDT	Areal Flood Advisory	RNK	Roanoke, City of Roanoke, City of Salem	117 min
Aug 29, 7:16 PM EDT	Special Weather Statement	RNK	Floyd, Montgomery, Roanoke, City of Roanoke, City of Salem	44 min
Aug 29, 7:40 PM EDT	Special Weather Statement	RNK	Alleghany, City of Covington	35 min
Aug 29, 7:55 PM EDT	Special Weather Statement	RNK	Floyd	35 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.