Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 182, NWS Blacksburg, VA

August 14, 2021Amherst County, Rockbridge County, City of Buena Vista, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 14, 2021, 8:18 PM EDT for Amherst County, Rockbridge County, City of Buena Vista, Virginia. It was in force for 34 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 14, 2021, 8:18 PM EDT (00:18 UTC)
Expired: Aug 14, 2021, 8:52 PM EDT
In force: 34 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Amherst County, VA, City of Buena Vista, VA, Rockbridge County, VA

The radar

The Roanoke radar (KFCX), 119 km from the middle of the area, began a volume at 00:20 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 00:00Z, 0.3 hours before the alert went out and 59 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: 1006 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1552 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

467 
WUUS51 KRNK 150018
SVRRNK
VAC009-163-530-150115-
/O.NEW.KRNK.SV.W.0182.210815T0018Z-210815T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
818 PM EDT Sat Aug 14 2021

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  The City of Buena Vista in west central Virginia...
  South central Rockbridge County in west central Virginia...
  Northern Amherst County in central Virginia...

* Until 915 PM EDT.

* At 817 PM EDT, a severe thunderstorm was located over Buena Vista,
  moving northeast 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...
  Buena Vista...
  Glasgow...
  Forks Of Buffalo...
  Clifford...
  Pleasant View...
  New Glasgow...
  and Lowesville.

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 3762 7894 3759 7939 3761 7940 3760 7943
      3762 7945 3759 7946 3773 7953 3780 7913
      3778 7911 3778 7908 3777 7907 3772 7907
      3770 7901
TIME...MOT...LOC 0017Z 245DEG 10KT 3770 7939 

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

$$

ET

2 follow-up statements

590 
WWUS51 KRNK 150041
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
841 PM EDT Sat Aug 14 2021

VAC163-530-150050-
/O.CAN.KRNK.SV.W.0182.000000T0000Z-210815T0115Z/
City of Buena Vista VA-Rockbridge VA-
841 PM EDT Sat Aug 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
SOUTH CENTRAL ROCKBRIDGE COUNTY AND THE CITY OF BUENA VISTA IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has weakened and 
moved out of the warned area. Additional storms with locally heavy 
rainfall remain in the area. 

LAT...LON 3759 7935 3765 7937 3766 7935 3768 7934
      3770 7932 3772 7931 3778 7908 3777 7907
      3772 7907 3771 7905 3770 7901 3762 7894
TIME...MOT...LOC 0040Z 259DEG 12KT 3764 7927 

$$

VAC009-150115-
/O.CON.KRNK.SV.W.0182.000000T0000Z-210815T0115Z/
Amherst VA-
841 PM EDT Sat Aug 14 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR
NORTHERN AMHERST COUNTY...

At 840 PM EDT, a severe thunderstorm was located over Pleasant View,
or near Forks Of Buffalo, moving east at 15 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
Forks Of Buffalo...
Clifford...
Lowesville...
Pleasant View...
New Glasgow...
and Oronoco.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for ${CTAhailwindthreat}, 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 3759 7935 3765 7937 3766 7935 3768 7934
      3770 7932 3772 7931 3778 7908 3777 7907
      3772 7907 3771 7905 3770 7901 3762 7894
TIME...MOT...LOC 0040Z 259DEG 12KT 3764 7927 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

ET

078 
WWUS51 KRNK 150052
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
852 PM EDT Sat Aug 14 2021

VAC009-150102-
/O.CAN.KRNK.SV.W.0182.000000T0000Z-210815T0115Z/
Amherst VA-
852 PM EDT Sat Aug 14 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
NORTHERN AMHERST COUNTY IS CANCELLED...
                
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 has been cancelled.  However gusty winds and
heavy rain are still possible with this thunderstorm.

LAT...LON 3759 7935 3765 7937 3766 7935 3768 7934
      3770 7932 3772 7931 3778 7908 3777 7907
      3772 7907 3771 7905 3770 7901 3762 7894
TIME...MOT...LOC 0049Z 245DEG 10KT 3765 7923 

$$

ET

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 14, 8:00 PM EDT	Special Weather Statement	RNK	Bedford	30 min
Aug 14, 8:02 PM EDT	Special Weather Statement	RNK	City of Lexington	28 min
Aug 14, 8:06 PM EDT	Areal Flood Advisory	RNK	Bedford, Campbell	79 min
Aug 14, 8:20 PM EDT	Special Weather Statement	RNK	Buckingham	25 min
Aug 14, 8:25 PM EDT	Areal Flood Advisory	RNK	Smyth	50 min
Aug 14, 8:33 PM EDT	Areal Flood Advisory	RNK	Amherst, Rockbridge, City of Buena Vista, City of Lexington	3 hr
Aug 14, 8:49 PM EDT	Special Weather Statement	RNK	Botetourt	26 min
Aug 14, 8:51 PM EDT	Special Weather Statement	RNK	Buckingham	24 min
Aug 14, 8:54 PM EDT	Special Weather Statement	RNK	Amherst, City of Lynchburg	36 min
Aug 14, 9:18 PM EDT	Special Weather Statement	RNK	Alleghany, City of Covington	27 min
Aug 14, 9:41 PM EDT	Special Weather Statement	RNK	Botetourt	34 min
Aug 14, 9:53 PM EDT	Areal Flood Advisory	RNK	Alleghany, Botetourt, Rockbridge	89 min
Aug 15, 5:12 PM EDT	Special Weather Statement	RNK	City of Danville	33 min
Aug 15, 5:46 PM EDT	Special Weather Statement	RNK	City of Danville	29 min
Aug 15, 6:11 PM EDT	Special Weather Statement	RNK	Pittsylvania	34 min
Aug 15, 6:46 PM EDT	Special Weather Statement	RNK	Pittsylvania	29 min
Aug 15, 7:01 PM EDT	Special Weather Statement	RNK	Franklin	29 min
Aug 15, 7:16 PM EDT	Special Weather Statement	RNK	Pittsylvania	29 min
Aug 15, 7:31 PM EDT	Special Weather Statement	RNK	Franklin	29 min
Aug 15, 7:34 PM EDT	Special Weather Statement	RNK	Giles	26 min
Aug 15, 7:45 PM EDT	Special Weather Statement	RNK	Carroll	30 min
Aug 15, 7:50 PM EDT	Special Weather Statement	RNK	Bedford	25 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.