Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 24, NWS Blacksburg, VA

April 9, 2021Franklin County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Apr 9, 2021, 3:56 PM EDT for Franklin County, Virginia. It was in force for 49 min. 4 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
Apr 9, 2021, 3:56 PM EDT (19:56 UTC)
Expired
Apr 9, 2021, 4:45 PM EDT
In force
49 min
Issued by
NWS Blacksburg, VA
Area
Storm-based polygon
Hail
1.5 in
Wind
60.0 mph

County Franklin County, VA

The radar

The Roanoke radar (KFCX), 25 km from the middle of the area, began a volume at 19:58 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
Apr 9, 4:09 PM EDTHAIL 11 Se Ferrum, VA
Apr 9, 4:20 PM EDTHAIL 0.74 S Rocky Mount, VA
Apr 9, 4:27 PM EDTHAIL 0.251 Ene Sontag, VA
Apr 9, 4:42 PM EDTHAIL 1.754 W Ferrum, VAHAILED FOR ABOUT 15 MINUTES DAMAGING CARS AND TRUCKS, LARGEST WAS GOLF BALL.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 9, 3:38 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 7.9 hours before the alert went out and 57 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 2021-04-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 132 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 2021-04-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 182 square meters per square second.193958Sfc1 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
132 J/kg
Mixed-layer CIN
-77 J/kg
Mixed-layer LCL
654 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
182 m²/s²
0-3 km storm-relative helicity
199 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

057 
WUUS51 KRNK 091956
SVRRNK
VAC067-092045-
/O.NEW.KRNK.SV.W.0024.210409T1956Z-210409T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
356 PM EDT Fri Apr 9 2021

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Southern Franklin County in west central Virginia...

* Until 445 PM EDT.

* At 355 PM EDT, a severe thunderstorm was located near Ferrum,
  moving east at 25 mph.

  HAZARD...Ping pong ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* Locations impacted include...
  Rocky Mount...
  Sydnorsville...
  Ferrum...
  Oak Level...
  Sontag...
  and Endicott.

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 3687 8017 3691 8008 3693 8008 3695 8012
      3698 8009 3699 7968 3680 7987
TIME...MOT...LOC 1955Z 277DEG 21KT 3692 8008 

HAIL...1.50IN
WIND...60MPH
 
$$

DS
3 follow-up statements
573 
WWUS51 KRNK 092016
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
416 PM EDT Fri Apr 9 2021

VAC067-092045-
/O.CON.KRNK.SV.W.0024.000000T0000Z-210409T2045Z/
Franklin VA-
416 PM EDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR SOUTHEASTERN FRANKLIN COUNTY...

At 415 PM EDT, a severe thunderstorm was located near Ferrum, moving
east 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...
Rocky Mount...
Sydnorsville...
Ferrum...
and Sontag.

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 3688 8004 3691 8008 3698 7997 3699 7968
      3680 7987
TIME...MOT...LOC 2015Z 277DEG 21KT 3691 7993 

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

DS
912 
WWUS51 KRNK 092032
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
432 PM EDT Fri Apr 9 2021

VAC067-092045-
/O.CON.KRNK.SV.W.0024.000000T0000Z-210409T2045Z/
Franklin VA-
432 PM EDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR SOUTHEASTERN FRANKLIN COUNTY...

At 432 PM EDT, a severe thunderstorm was located over Sontag, or over
Sydnorsville, moving east 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...
Sydnorsville...
and Sontag.

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 3699 7968 3686 7981 3687 7988 3699 7977
TIME...MOT...LOC 2032Z 277DEG 21KT 3690 7981 

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

DS
145 
WWUS51 KRNK 092043
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
443 PM EDT Fri Apr 9 2021

VAC067-092052-
/O.EXP.KRNK.SV.W.0024.000000T0000Z-210409T2045Z/
Franklin VA-
443 PM EDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
SOUTHEASTERN FRANKLIN COUNTY WILL EXPIRE AT 445 PM EDT...
                
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 will be allowed to expire.  However heavy rain
is still possible with this thunderstorm.

A Severe Thunderstorm Watch remains in effect until midnight EDT for
north central North Carolina...and south central, southwestern and
west central Virginia.

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 3699 7968 3686 7981 3687 7988 3699 7977
TIME...MOT...LOC 2042Z 277DEG 21KT 3689 7975 

$$

DS

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 8, 8:12 PM EDTSpecial Weather StatementRNKBath48 min
Apr 8, 8:23 PM EDTSevere Thunderstorm WarningRNKAlleghany, Botetourt37 min
Apr 8, 8:38 PM EDTSpecial Weather StatementRNKCampbell37 min
Apr 8, 8:48 PM EDTSevere Thunderstorm WarningRNKBedford, Campbell, City of Lynchburg27 min
Apr 8, 9:15 PM EDTAreal Flood AdvisoryRNKAlleghany, Botetourt, Craig4 hr
Apr 8, 9:15 PM EDTSpecial Weather StatementRNKAlleghany, Bath, City of Covington90 min
Apr 8, 9:21 PM EDTSevere Thunderstorm WarningRNKAmherst, Appomattox, Campbell, City of Lynchburg54 min
Apr 8, 9:27 PM EDTSevere Thunderstorm WarningRNKAlleghany, Bath, Botetourt, City of Covington63 min
Apr 8, 9:40 PM EDTSpecial Weather StatementRNKBedford, Botetourt65 min
Apr 8, 10:14 PM EDTSpecial Weather StatementRNKCampbell61 min
Apr 8, 10:44 PM EDTSpecial Weather StatementRNKBuckingham31 min
Apr 8, 11:55 PM EDTSpecial Weather StatementRNKCity of Lynchburg35 min
Apr 9, 1:28 PM EDTSpecial Weather StatementRNKPulaski32 min
Apr 9, 1:52 PM EDTSpecial Weather StatementRNKBath23 min
Apr 9, 1:58 PM EDTSpecial Weather StatementRNKCity of Radford32 min
Apr 9, 2:05 PM EDTSpecial Weather StatementRNKAlleghany25 min
Apr 9, 2:09 PM EDTSevere Thunderstorm WarningRNKBath51 min
Apr 9, 2:27 PM EDTSpecial Weather StatementRNKMontgomery, City of Radford33 min
Apr 9, 2:29 PM EDTSpecial Weather StatementRNKPulaski31 min
Apr 9, 2:50 PM EDTSpecial Weather StatementRNKGiles25 min
Apr 9, 2:53 PM EDTSpecial Weather StatementRNKAlleghany37 min
Apr 9, 2:55 PM EDTSevere Thunderstorm WarningRNKFloyd50 min
Apr 9, 3:11 PM EDTSpecial Weather StatementRNKCarroll34 min
Apr 9, 3:12 PM EDTAreal Flood AdvisoryRNKCarroll, Floyd, Grayson, Montgomery, Pulaski, Wythe3 hr
Apr 9, 3:14 PM EDTSpecial Weather StatementRNKCraig31 min
Apr 9, 3:21 PM EDTSpecial Weather StatementRNKBath24 min
Apr 9, 3:31 PM EDTSevere Thunderstorm WarningRNKFloyd, Franklin, Patrick44 min
Apr 9, 3:40 PM EDTSpecial Weather StatementRNKHalifax35 min
Apr 9, 4:07 PM EDTSevere Thunderstorm WarningRNKHalifax23 min
Apr 9, 4:10 PM EDTSpecial Weather StatementRNKCity of Martinsville35 min
Apr 9, 4:19 PM EDTSevere Thunderstorm WarningRNKFranklin, Henry, Pittsylvania41 min
Apr 9, 4:31 PM EDTSevere Thunderstorm WarningRNKHalifax44 min
Apr 9, 4:35 PM EDTSevere Thunderstorm WarningRNKFloyd, Franklin, Patrick40 min
Apr 9, 4:40 PM EDTSevere Thunderstorm WarningRNKHenry, Pittsylvania50 min
Apr 9, 5:10 PM EDTSevere Thunderstorm WarningRNKPittsylvania36 min
Apr 9, 5:13 PM EDTTornado WarningRNKPittsylvania33 min
Apr 9, 5:27 PM EDTTornado WarningRNKHalifax, Pittsylvania48 min
Apr 9, 5:55 PM EDTTornado WarningRNKHalifax50 min
Apr 9, 6:00 PM EDTSpecial Weather StatementRNKCity of Martinsville45 min
Apr 9, 6:16 PM EDTSpecial Weather StatementRNKHenry, City of Martinsville44 min
Apr 9, 6:41 PM EDTSpecial Weather StatementRNKMecklenburg34 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.