Alert archive / Virginia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 80, NWS Blacksburg, VA

July 13, 20214 counties in Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 13, 2021, 3:14 PM EDT for 4 counties in Virginia. It was in force for 46 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 13, 2021, 3:14 PM EDT (19:14 UTC)
Expired: Jul 13, 2021, 4:00 PM EDT
In force: 46 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Botetourt County, VA, Craig County, VA, Montgomery County, VA, Roanoke County, VA

The radar

The Roanoke radar (KFCX), 39 km from the middle of the area, began a volume at 19:16 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, 7.2 hours before the alert went out and 61 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1339 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: 21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

904 
WUUS51 KRNK 131914
SVRRNK
VAC023-045-121-161-132000-
/O.NEW.KRNK.SV.W.0080.210713T1914Z-210713T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service BLACKSBURG VA
314 PM EDT Tue Jul 13 2021

The National Weather Service in BLACKSBURG has issued a

* Severe Thunderstorm Warning for...
  Northwestern Roanoke County in west central Virginia...
  Eastern Craig County in southwestern Virginia...
  Southwestern Botetourt County in west central Virginia...
  Northeastern Montgomery County in southwestern Virginia...

* Until 400 PM EDT.

* At 314 PM EDT, a severe thunderstorm was located over Bradshaw, or
  7 miles south of Sinking Creek, 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...
  Troutville...
  New Castle...
  Catawba...
  Abbott...
  Mc Donalds Mill...
  Daleville...
  and Bradshaw.

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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

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 3724 8025 3734 8035 3759 8009 3739 7987
TIME...MOT...LOC 1914Z 227DEG 15KT 3730 8025 

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

WP

2 follow-up statements

545 
WWUS51 KRNK 131923
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
323 PM EDT Tue Jul 13 2021

VAC121-131933-
/O.CAN.KRNK.SV.W.0080.000000T0000Z-210713T2000Z/
Montgomery VA-
323 PM EDT Tue Jul 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
NORTHEASTERN MONTGOMERY COUNTY IS CANCELLED...
    
The severe thunderstorm which prompted the warning has 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 3727 8022 3735 8027 3759 8009 3739 7987
TIME...MOT...LOC 1923Z 235DEG 23KT 3734 8016 

$$

VAC023-045-161-132000-
/O.CON.KRNK.SV.W.0080.000000T0000Z-210713T2000Z/
Roanoke VA-Craig VA-Botetourt VA-
323 PM EDT Tue Jul 13 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR
NORTHWESTERN ROANOKE...EASTERN CRAIG AND SOUTHWESTERN BOTETOURT
COUNTIES...

At 323 PM EDT, a severe thunderstorm was located near Catawba, moving
northeast 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...
Troutville...
New Castle...
Catawba...
Abbott...
Daleville...
and Bradshaw.

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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

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 3727 8022 3735 8027 3759 8009 3739 7987
TIME...MOT...LOC 1923Z 235DEG 23KT 3734 8016 

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

WP

356 
WWUS51 KRNK 131959
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
359 PM EDT Tue Jul 13 2021

VAC023-045-161-132003-
/O.EXP.KRNK.SV.W.0080.000000T0000Z-210713T2000Z/
Roanoke VA-Craig VA-Botetourt VA-
359 PM EDT Tue Jul 13 2021

...THE SEVERE THUNDERSTORM WARNING FOR 
NORTHWESTERN ROANOKE...EASTERN CRAIG AND SOUTHWESTERN BOTETOURT
COUNTIES WILL EXPIRE AT 400 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.  However heavy rain is still possible with this
thunderstorm.

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 3727 8022 3735 8027 3759 8009 3739 7987
TIME...MOT...LOC 1953Z 227DEG 15KT 3741 8006 

$$

RAB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 2:09 PM EDT	Special Weather Statement	RNK	Montgomery, Pulaski, City of Radford	36 min
Jul 13, 2:37 PM EDT	Severe Thunderstorm Warning	RNK	Montgomery	38 min
Jul 13, 3:41 PM EDT	Special Weather Statement	RNK	Wythe	34 min
Jul 13, 3:46 PM EDT	Special Weather Statement	RNK	Alleghany, City of Covington	29 min
Jul 13, 4:00 PM EDT	Special Weather Statement	RNK	Botetourt	30 min
Jul 13, 4:04 PM EDT	Severe Thunderstorm Warning	RNK	Botetourt	41 min
Jul 13, 4:33 PM EDT	Special Weather Statement	RNK	Pulaski	42 min
Jul 13, 5:03 PM EDT	Special Weather Statement	RNK	Pulaski	42 min
Jul 13, 5:21 PM EDT	Special Weather Statement	RNK	Wythe	39 min
Jul 13, 6:00 PM EDT	Special Weather Statement	RNK	Alleghany	45 min
Jul 13, 6:36 PM EDT	Special Weather Statement	RNK	Bath	39 min
Jul 13, 6:53 PM EDT	Special Weather Statement	RNK	Smyth	52 min
Jul 13, 7:40 PM EDT	Special Weather Statement	RNK	Wythe	50 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.