Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 91, NWS Blacksburg, VA

July 17, 20216 counties in Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 17, 2021, 6:25 PM EDT for 6 counties in Virginia. It was in force for 65 min. 3 reports 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
Jul 17, 2021, 6:25 PM EDT (22:25 UTC)
Expired
Jul 17, 2021, 7:30 PM EDT
In force
65 min
Issued by
NWS Blacksburg, VA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Amherst County, VA, Bedford County, VA, Botetourt County, VA, City of Buena Vista, VA, City of Lexington, VA, Rockbridge County, VA

The radar

The Roanoke radar (KFCX), 87 km from the middle of the area, began a volume at 22:26 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

TimeReportWhereRemark
Jul 17, 6:26 PM EDTTSTM WND DMG6 Wsw Rockbridge Baths, VATREES DOWN AT THE INTERSECTION OF WHILE ROCK ROAD AND WEST MIDLAND TRAIL.
Jul 17, 6:52 PM EDTTSTM WND DMG2 Wsw Vesuvius, VATREES DOWN AT THE INTERSECTION OF SOUTH RIVER ROAD AND NATURE CAMP ROAD.
Jul 17, 6:52 PM EDTTSTM WND DMGVesuvius, VATREES DOWN.

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 12:00Z, 10.4 hours before the alert went out and 30 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.

143 
WUUS51 KRNK 172225
SVRRNK
VAC009-019-023-163-530-678-172330-
/O.NEW.KRNK.SV.W.0091.210717T2225Z-210717T2330Z/

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

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  The City of Buena Vista in west central Virginia...
  The City of Lexington in west central Virginia...
  Rockbridge County in west central Virginia...
  Bedford County in south central Virginia...
  Botetourt County in west central Virginia...
  Amherst County in central Virginia...

* Until 730 PM EDT.

* At 625 PM EDT, severe thunderstorms were located along a line
  extending from near Brownsburg to near Daleville, moving southeast
  at 20 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Lexington...
  Buena Vista...
  Bedford...
  Amherst...
  Buchanan...
  Glasgow...
  and Troutville.

This includes The following Locations VMI and 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 3747 7921 3745 7927 3743 7925 3712 7965
      3716 7971 3719 7972 3721 7978 3723 7978
      3721 7980 3722 7985 3730 7984 3733 7987
      3742 8007 3801 7935 3790 7916 3781 7917
      3778 7908 3772 7907 3770 7899 3766 7896
TIME...MOT...LOC 2225Z 306DEG 16KT 3796 7929 3740 8000 

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

RR
2 follow-up statements
200 
WWUS51 KRNK 172251
SVSRNK

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

VAC009-019-023-163-530-678-172330-
/O.CON.KRNK.SV.W.0091.000000T0000Z-210717T2330Z/
City of Buena Vista VA-City of Lexington VA-Rockbridge VA-Bedford VA-
Botetourt VA-Amherst VA-
651 PM EDT Sat Jul 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR
SOUTHERN ROCKBRIDGE...BEDFORD...SOUTHERN BOTETOURT AND AMHERST
COUNTIES...THE CITY OF BUENA VISTA AND THE CITY OF LEXINGTON...

At 651 PM EDT, severe thunderstorms were located along a line
extending from Vesuvius to near Laymantown, moving southeast at 20
mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Lexington...
Buena Vista...
Bedford...
Amherst...
Buchanan...
Glasgow...
and Troutville.

This includes The following Locations VMI and 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 3747 7921 3745 7927 3743 7925 3712 7965
      3716 7971 3719 7972 3721 7978 3723 7978
      3721 7980 3722 7985 3730 7984 3733 7987
      3739 8001 3794 7923 3790 7916 3781 7917
      3778 7908 3772 7907 3770 7899 3766 7896
TIME...MOT...LOC 2251Z 306DEG 16KT 3789 7917 3733 7989 

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

RR
208 
WWUS51 KRNK 172320
SVSRNK

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

VAC530-678-172330-
/O.CAN.KRNK.SV.W.0091.000000T0000Z-210717T2330Z/
City of Buena Vista VA-City of Lexington VA-
720 PM EDT Sat Jul 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
...THE CITY OF BUENA VISTA AND THE CITY OF LEXINGTON 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 3747 7921 3745 7927 3743 7925 3712 7965
      3716 7971 3719 7972 3721 7978 3723 7978
      3721 7980 3722 7985 3730 7984 3733 7987
      3781 7917 3778 7908 3772 7907 3770 7899
      3766 7896
TIME...MOT...LOC 2320Z 306DEG 16KT 3781 7904 3725 7976 

$$

VAC009-019-023-163-172330-
/O.CON.KRNK.SV.W.0091.000000T0000Z-210717T2330Z/
Rockbridge VA-Bedford VA-Botetourt VA-Amherst VA-
720 PM EDT Sat Jul 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR
SOUTHEASTERN ROCKBRIDGE...BEDFORD...SOUTHEASTERN BOTETOURT AND
AMHERST COUNTIES...

At 720 PM EDT, severe thunderstorms were located along a line
extending from 6 miles southeast of Montebello to near Stewartsville,
moving southeast at 20 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Bedford...
Amherst...
Forks Of Buffalo...
Stewartsville...
Big Island...
Moneta...
and Clifford.

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 3747 7921 3745 7927 3743 7925 3712 7965
      3716 7971 3719 7972 3721 7978 3723 7978
      3721 7980 3722 7985 3730 7984 3733 7987
      3781 7917 3778 7908 3772 7907 3770 7899
      3766 7896
TIME...MOT...LOC 2320Z 306DEG 16KT 3781 7904 3725 7976 

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

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, 6:58 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, 7:30 PM EDTSevere Thunderstorm WarningRNKBedford, Campbell, City of Lynchburg39 min
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.