Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 92, NWS Blacksburg, VA

July 17, 2021Bedford County, Campbell County, City of Lynchburg, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 17, 2021, 7:30 PM EDT for Bedford County, Campbell County, City of Lynchburg, Virginia. It was in force for 39 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, 7:30 PM EDT (23:30 UTC)
Expired
Jul 17, 2021, 8:09 PM EDT
In force
39 min
Issued by
NWS Blacksburg, VA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Bedford County, VA, Campbell County, VA, City of Lynchburg, VA

The radar

The Roanoke radar (KFCX), 87 km from the middle of the area, began a volume at 23:30 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.

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 11.5 hours before the alert went out and 16 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-pSkew-T log-p diagram, Roanoke, VA at 12:00Z on 2021-07-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 428 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 12:00Z on 2021-07-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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.

272 
WUUS51 KRNK 172330
SVRRNK
VAC019-031-680-180030-
/O.NEW.KRNK.SV.W.0092.210717T2330Z-210718T0030Z/

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

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Campbell County in central Virginia...
  Bedford County in south central Virginia...
  The City of Lynchburg in central Virginia...

* Until 830 PM EDT.

* At 729 PM EDT, severe thunderstorms were located along a line
  extending from near Coleman Falls to Stewartsville, moving east at
  30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Lynchburg...
  Bedford...
  Altavista...
  Stewartsville...
  Huddleston...
  Concord...
  and Rustburg.

This includes The following Locations Liberty University, The
National D-Day Memorial, and Lynchburg Airport.
 
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.

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 3711 7924 3713 7925 3710 7928 3713 7934
      3714 7934 3707 7940 3705 7945 3723 7978
      3723 7984 3726 7986 3733 7982 3752 7941
      3751 7926 3749 7926 3751 7922 3741 7914
      3739 7908 3742 7907 3743 7902 3726 7892
TIME...MOT...LOC 2329Z 276DEG 27KT 3746 7938 3726 7981 

HAIL...<.75IN
WIND...60MPH
 
$$

RR
2 follow-up statements
633 
WWUS51 KRNK 180000
SVSRNK

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

VAC031-680-180009-
/O.CAN.KRNK.SV.W.0092.000000T0000Z-210718T0030Z/
Campbell VA-City of Lynchburg VA-
800 PM EDT Sat Jul 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
CAMPBELL  AND THE CITY OF LYNCHBURG IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

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 3749 7924 3713 7943 3716 7965 3723 7978
      3723 7984 3724 7984 3742 7963 3746 7955
      3750 7926 3749 7926 3750 7924
TIME...MOT...LOC 2359Z 263DEG 19KT 3740 7955 3723 7965 

$$

VAC019-180030-
/O.CON.KRNK.SV.W.0092.000000T0000Z-210718T0030Z/
Bedford VA-
800 PM EDT Sat Jul 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR
BEDFORD COUNTY...

At 759 PM EDT, severe thunderstorms were located along a line
extending from near Peaks Of Otter Summit to near Moneta, moving east
at 20 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Bedford...
Moneta...
Stewartsville...
Huddleston...
Forest...
Boonsboro...
and Chamblissburg.

This includes The following Location The National D-Day Memorial.
 
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.

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 3749 7924 3713 7943 3716 7965 3723 7978
      3723 7984 3724 7984 3742 7963 3746 7955
      3750 7926 3749 7926 3750 7924
TIME...MOT...LOC 2359Z 263DEG 19KT 3740 7955 3723 7965 

HAIL...<.75IN
WIND...60MPH
 
$$

RR
620 
WWUS51 KRNK 180009
SVSRNK

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

VAC019-180019-
/O.CAN.KRNK.SV.W.0092.000000T0000Z-210718T0030Z/
Bedford VA-
809 PM EDT Sat Jul 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
BEDFORD COUNTY IS CANCELLED...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled.

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 3749 7924 3713 7943 3716 7965 3723 7978
      3723 7984 3724 7984 3742 7963 3746 7955
      3750 7926 3749 7926 3750 7924
TIME...MOT...LOC 0006Z 276DEG 27KT 3739 7948 3722 7958 

$$

RR

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 16, 8:21 PM EDTSpecial Weather StatementRNKWythe24 min
Jul 17, 12:01 PM EDTSpecial Weather StatementRNKBedford, Franklin29 min
Jul 17, 12:26 PM EDTSevere Thunderstorm WarningRNKFranklin49 min
Jul 17, 12:47 PM EDTSpecial Weather StatementRNKBedford28 min
Jul 17, 1:20 PM EDTSpecial Weather StatementRNKFranklin25 min
Jul 17, 1:33 PM EDTSpecial Weather StatementRNKBedford42 min
Jul 17, 1:38 PM EDTSpecial Weather StatementRNKCarroll37 min
Jul 17, 1:43 PM EDTSpecial Weather StatementRNKCampbell47 min
Jul 17, 1:45 PM EDTSevere Thunderstorm WarningRNKCarroll, Patrick43 min
Jul 17, 1:56 PM EDTSevere Thunderstorm WarningRNKAmherst, Appomattox, Campbell, City of Lynchburg64 min
Jul 17, 2:11 PM EDTAreal Flood AdvisoryRNKCarroll, Floyd, Patrick3 hr
Jul 17, 2:14 PM EDTAreal Flood AdvisoryRNKAppomattox, Campbell3 hr
Jul 17, 2:37 PM EDTSevere Thunderstorm WarningRNKAppomattox, Campbell, Charlotte53 min
Jul 17, 2:45 PM EDTSpecial Weather StatementRNKPatrick30 min
Jul 17, 2:47 PM EDTSpecial Weather StatementRNKCity of Martinsville28 min
Jul 17, 2:53 PM EDTSevere Thunderstorm WarningRNKFranklin, Henry, Pittsylvania, City of Martinsville36 min
Jul 17, 2:59 PM EDTSpecial Weather StatementRNKFranklin31 min
Jul 17, 3:00 PM EDTSpecial Weather StatementRNKPrince Edward15 min
Jul 17, 3:16 PM EDTAreal Flood AdvisoryRNKFranklin2 hr
Jul 17, 3:24 PM EDTSpecial Weather StatementRNKFranklin36 min
Jul 17, 3:27 PM EDTSpecial Weather StatementRNKTazewell48 min
Jul 17, 3:42 PM EDTSpecial Weather StatementRNKCity of Danville48 min
Jul 17, 3:48 PM EDTSevere Thunderstorm WarningRNKPittsylvania, City of Danville57 min
Jul 17, 3:52 PM EDTAreal Flood AdvisoryRNKPittsylvania, City of Danville3 hr
Jul 17, 3:54 PM EDTSpecial Weather StatementRNKHalifax36 min
Jul 17, 4:11 PM EDTFlash Flood WarningRNKPittsylvania, City of Danville3 hr
Jul 17, 4:17 PM EDTSpecial Weather StatementRNKBland, Giles, Smyth, Tazewell43 min
Jul 17, 4:22 PM EDTSpecial Weather StatementRNKCharlotte23 min
Jul 17, 4:26 PM EDTSpecial Weather StatementRNKHalifax34 min
Jul 17, 4:47 PM EDTSpecial Weather StatementRNKCharlotte28 min
Jul 17, 5:01 PM EDTSpecial Weather StatementRNKAlleghany, Bath, Craig, Giles, City of Covington59 min
Jul 17, 5:26 PM EDTSpecial Weather StatementRNKAppomattox34 min
Jul 17, 5:45 PM EDTSpecial Weather StatementRNKFloyd30 min
Jul 17, 6:04 PM EDTSpecial Weather StatementRNKAmherst, Botetourt, Montgomery, Roanoke, Rockbridge, City of Buena Vista and 3 more56 min
Jul 17, 6:19 PM EDTSpecial Weather StatementRNKFloyd26 min
Jul 17, 6:25 PM EDTSevere Thunderstorm WarningRNKAmherst, Bedford, Botetourt, Rockbridge, City of Buena Vista, City of Lexington65 min
Jul 17, 6:58 PM EDTSpecial Weather StatementRNKCity of Roanoke, City of Salem47 min
Jul 17, 7:05 PM EDTSpecial Weather StatementRNKPatrick40 min
Jul 17, 7:10 PM EDTAreal Flood AdvisoryRNKCarroll, Floyd, Grayson, Patrick3 hr
Jul 17, 7:44 PM EDTSevere Thunderstorm WarningRNKCarroll, Floyd, Franklin, Grayson, Henry, Patrick61 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2021Every 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.