Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 85, NWS Blacksburg, VA

July 17, 2021Appomattox County, Campbell County, Charlotte County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 17, 2021, 2:37 PM EDT for Appomattox County, Campbell County, Charlotte County, Virginia. It was in force for 53 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: Jul 17, 2021, 2:37 PM EDT (18:37 UTC)
Expired: Jul 17, 2021, 3:30 PM EDT
In force: 53 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

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

The radar

The Roanoke radar (KFCX), 140 km from the middle of the area, began a volume at 18:37 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, 6.6 hours before the alert went out and 69 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: 428 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 989 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -20 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

525 
WUUS51 KRNK 171837
SVRRNK
VAC011-031-037-171930-
/O.NEW.KRNK.SV.W.0085.210717T1837Z-210717T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
237 PM EDT Sat Jul 17 2021

The National Weather Service in BLACKSBURG has issued a

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

* Until 330 PM EDT.

* At 236 PM EDT, a severe thunderstorm was located near Hat Creek, or
  7 miles west of Red House, moving east 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...
  Brookneal...
  Phenix...
  Red House...
  Pamplin City...
  Madisonville...
  Cullen...
  and Hixburg.

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.

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 3701 7890 3705 7897 3703 7901 3721 7902
      3742 7865 3742 7863 3739 7863 3740 7859
      3734 7860 3727 7868 3721 7869 3719 7868
      3719 7864 3717 7863 3715 7859 3715 7855
      3714 7855
TIME...MOT...LOC 1836Z 248DEG 11KT 3716 7893 

HAIL...1.00IN
WIND...60MPH
 
$$

BMG

2 follow-up statements

731 
WWUS51 KRNK 171911
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
311 PM EDT Sat Jul 17 2021

VAC011-031-037-171930-
/O.CON.KRNK.SV.W.0085.000000T0000Z-210717T1930Z/
Appomattox VA-Charlotte VA-Campbell VA-
311 PM EDT Sat Jul 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR
SOUTHEASTERN APPOMATTOX...NORTHWESTERN CHARLOTTE AND SOUTHEASTERN
CAMPBELL COUNTIES...

At 311 PM EDT, a severe thunderstorm was located near Red House,
moving northeast 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...
Phenix...
Red House...
Pamplin City...
Madisonville...
Cullen...
Hat Creek...
and Wren.

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.

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 3704 7887 3710 7895 3721 7891 3736 7860
      3735 7860 3727 7868 3721 7869 3719 7868
      3719 7864 3717 7863 3715 7859 3715 7855
      3714 7855
TIME...MOT...LOC 1911Z 240DEG 19KT 3715 7875 

HAIL...1.00IN
WIND...60MPH
 
$$

RR

079 
WWUS51 KRNK 171928
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
328 PM EDT Sat Jul 17 2021

VAC011-031-037-171938-
/O.EXP.KRNK.SV.W.0085.000000T0000Z-210717T1930Z/
Appomattox VA-Charlotte VA-Campbell VA-
328 PM EDT Sat Jul 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
SOUTHEASTERN APPOMATTOX...NORTHWESTERN CHARLOTTE AND SOUTHEASTERN
CAMPBELL COUNTIES WILL EXPIRE AT 330 PM EDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

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 3704 7887 3710 7895 3721 7891 3736 7860
      3735 7860 3727 7868 3721 7869 3719 7868
      3719 7864 3717 7863 3715 7859 3715 7855
      3714 7855
TIME...MOT...LOC 1928Z 248DEG 11KT 3717 7869 

$$

RR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 8:21 PM EDT	Special Weather Statement	RNK	Wythe	24 min
Jul 17, 12:01 PM EDT	Special Weather Statement	RNK	Bedford, Franklin	29 min
Jul 17, 12:26 PM EDT	Severe Thunderstorm Warning	RNK	Franklin	49 min
Jul 17, 12:47 PM EDT	Special Weather Statement	RNK	Bedford	28 min
Jul 17, 1:20 PM EDT	Special Weather Statement	RNK	Franklin	25 min
Jul 17, 1:33 PM EDT	Special Weather Statement	RNK	Bedford	42 min
Jul 17, 1:38 PM EDT	Special Weather Statement	RNK	Carroll	37 min
Jul 17, 1:43 PM EDT	Special Weather Statement	RNK	Campbell	47 min
Jul 17, 1:45 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Patrick	43 min
Jul 17, 1:56 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Appomattox, Campbell, City of Lynchburg	64 min
Jul 17, 2:11 PM EDT	Areal Flood Advisory	RNK	Carroll, Floyd, Patrick	3 hr
Jul 17, 2:14 PM EDT	Areal Flood Advisory	RNK	Appomattox, Campbell	3 hr
Jul 17, 2:45 PM EDT	Special Weather Statement	RNK	Patrick	30 min
Jul 17, 2:47 PM EDT	Special Weather Statement	RNK	City of Martinsville	28 min
Jul 17, 2:53 PM EDT	Severe Thunderstorm Warning	RNK	Franklin, Henry, Pittsylvania, City of Martinsville	36 min
Jul 17, 2:59 PM EDT	Special Weather Statement	RNK	Franklin	31 min
Jul 17, 3:00 PM EDT	Special Weather Statement	RNK	Prince Edward	15 min
Jul 17, 3:16 PM EDT	Areal Flood Advisory	RNK	Franklin	2 hr
Jul 17, 3:24 PM EDT	Special Weather Statement	RNK	Franklin	36 min
Jul 17, 3:27 PM EDT	Special Weather Statement	RNK	Tazewell	48 min
Jul 17, 3:42 PM EDT	Special Weather Statement	RNK	City of Danville	48 min
Jul 17, 3:48 PM EDT	Severe Thunderstorm Warning	RNK	Pittsylvania, City of Danville	57 min
Jul 17, 3:52 PM EDT	Areal Flood Advisory	RNK	Pittsylvania, City of Danville	3 hr
Jul 17, 3:54 PM EDT	Special Weather Statement	RNK	Halifax	36 min
Jul 17, 4:11 PM EDT	Flash Flood Warning	RNK	Pittsylvania, City of Danville	3 hr
Jul 17, 4:17 PM EDT	Special Weather Statement	RNK	Bland, Giles, Smyth, Tazewell	43 min
Jul 17, 4:22 PM EDT	Special Weather Statement	RNK	Charlotte	23 min
Jul 17, 4:26 PM EDT	Special Weather Statement	RNK	Halifax	34 min
Jul 17, 4:47 PM EDT	Special Weather Statement	RNK	Charlotte	28 min
Jul 17, 5:01 PM EDT	Special Weather Statement	RNK	Alleghany, Bath, Craig, Giles, City of Covington	59 min
Jul 17, 5:26 PM EDT	Special Weather Statement	RNK	Appomattox	34 min
Jul 17, 5:45 PM EDT	Special Weather Statement	RNK	Floyd	30 min
Jul 17, 6:04 PM EDT	Special Weather Statement	RNK	Amherst, Botetourt, Montgomery, Roanoke, Rockbridge, City of Buena Vista and 3 more	56 min
Jul 17, 6:19 PM EDT	Special Weather Statement	RNK	Floyd	26 min
Jul 17, 6:25 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Bedford, Botetourt, Rockbridge, City of Buena Vista, City of Lexington	65 min
Jul 17, 6:58 PM EDT	Special Weather Statement	RNK	City of Roanoke, City of Salem	47 min
Jul 17, 7:05 PM EDT	Special Weather Statement	RNK	Patrick	40 min
Jul 17, 7:10 PM EDT	Areal Flood Advisory	RNK	Carroll, Floyd, Grayson, Patrick	3 hr
Jul 17, 7:30 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Campbell, City of Lynchburg	39 min
Jul 17, 7:44 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Franklin, Grayson, Henry, Patrick	61 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.