Alert archive / Virginia / Tornado Warnings in 2018

Tornado Warning 13, NWS Blacksburg, VA

September 17, 2018Charlotte County, Halifax County, Virginia

NWS Blacksburg, VA issued this tornado warning at Sep 17, 2018, 4:23 PM EDT for Charlotte County, Halifax County, Virginia. It was in force for 37 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: Sep 17, 2018, 4:23 PM EDT (20:23 UTC)
Expired: Sep 17, 2018, 5:00 PM EDT
In force: 37 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Charlotte County, VA, Halifax County, VA

The radar

The Norfolk radar (KAKQ), 139 km from the middle of the area, began a volume at 20:23 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, 8.4 hours before the alert went out and 88 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: 30 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 682 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 164 m²/s²
0-3 km storm-relative helicity: 192 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

As transmitted.

164 
WFUS51 KRNK 172023
TORRNK
VAC037-083-172100-
/O.NEW.KRNK.TO.W.0013.180917T2023Z-180917T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service BLACKSBURG VA
423 PM EDT MON SEP 17 2018

The National Weather Service in BLACKSBURG has issued a

* Tornado Warning for...
  Eastern Charlotte County in south central Virginia...
  East central Halifax County in south central Virginia...

* Until 500 PM EDT
    
* At 423 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Redoak, moving northeast at 30 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* Locations impacted include...
  Keysville...
  Charlotte Court House...
  Redoak...
  Clover...
  and Drakes Branch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

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 3690 7849 3670 7864 3669 7868 3682 7881
      3714 7855 3714 7853 3709 7848 3708 7844
TIME...MOT...LOC 2023Z 230DEG 24KT 3681 7867 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

RAB

3 follow-up statements

446 
WWUS51 KRNK 172047
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
447 PM EDT MON SEP 17 2018

VAC083-172056-
/O.CAN.KRNK.TO.W.0013.000000T0000Z-180917T2100Z/
Halifax VA-
447 PM EDT MON SEP 17 2018

...THE TORNADO WARNING FOR EAST CENTRAL HALIFAX COUNTY IS 
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved into 
Charlotte county, 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 3690 7849 3677 7859 3678 7865 3687 7866
      3714 7855 3714 7853 3709 7848 3708 7844
TIME...MOT...LOC 2046Z 230DEG 24KT 3691 7852 

$$

VAC037-172100-
/O.CON.KRNK.TO.W.0013.000000T0000Z-180917T2100Z/
Charlotte VA-
447 PM EDT MON SEP 17 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR 
EASTERN CHARLOTTE COUNTY...
    
At 446 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Wylliesburg, moving northeast at 30 mph.

HAZARD...Tornado. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

Locations impacted include...
Keysville...
Redoak...
Drakes Branch...
Wylliesburg...
and Abilene.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

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 3690 7849 3677 7859 3678 7865 3687 7866
      3714 7855 3714 7853 3709 7848 3708 7844
TIME...MOT...LOC 2046Z 230DEG 24KT 3691 7852 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

RAB

344 
WWUS51 KRNK 172054
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
454 PM EDT MON SEP 17 2018

VAC037-172100-
/O.CON.KRNK.TO.W.0013.000000T0000Z-180917T2100Z/
Charlotte VA-
454 PM EDT MON SEP 17 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM EDT FOR 
EAST CENTRAL CHARLOTTE COUNTY...
    
At 454 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Wylliesburg, moving northeast at 25 mph.

HAZARD...Tornado. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

Locations impacted include...
Wylliesburg.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

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 3685 7854 3684 7854 3684 7866 3685 7866
      3687 7865 3704 7853 3704 7851 3699 7846
      3690 7849
TIME...MOT...LOC 2054Z 229DEG 21KT 3690 7853 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

RAB

862 
WWUS51 KRNK 172101
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
501 PM EDT MON SEP 17 2018

VAC037-172110-
/O.EXP.KRNK.TO.W.0013.000000T0000Z-180917T2100Z/
Charlotte VA-
501 PM EDT MON SEP 17 2018

...THE TORNADO WARNING FOR EASTERN CHARLOTTE COUNTY HAS EXPIRED...
    
The tornadic thunderstorm which prompted the warning has moved east 
into Lunenburg county. Therefore, the warning has been 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 3685 7854 3684 7854 3684 7866 3685 7866
      3687 7865 3704 7853 3704 7851 3699 7846
      3690 7849
TIME...MOT...LOC 2100Z 230DEG 24KT 3692 7850 

$$

RAB

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 16, 8:26 PM EDT	Flash Flood Warning	RNK	Floyd, Franklin, Henry, Patrick, Pittsylvania, Roanoke and 4 more	12 hr
Sep 16, 9:28 PM EDT	Flash Flood Warning	RNK	Floyd, Montgomery, Pulaski, City of Radford	12 hr
Sep 17, 1:02 AM EDT	Special Weather Statement	RNK	Patrick	58 min
Sep 17, 1:14 AM EDT	Special Weather Statement	RNK	Henry	46 min
Sep 17, 1:16 AM EDT	Special Weather Statement	RNK	Patrick	44 min
Sep 17, 2:14 AM EDT	Flash Flood Warning	RNK	Bedford, Botetourt, Campbell, City of Lynchburg	6 hr
Sep 17, 3:04 AM EDT	Areal Flood Warning	RNK	Carroll, Floyd, Grayson, Patrick, City of Galax	9 hr
Sep 17, 3:59 AM EDT	Areal Flood Warning	RNK	Patrick	9 hr
Sep 17, 5:04 AM EDT	Areal Flood Warning	RNK	Franklin, Henry, City of Martinsville	6 hr
Sep 17, 5:21 AM EDT	Areal Flood Warning	RNK	Montgomery	12 hr
Sep 17, 6:03 AM EDT	Areal Flood Advisory	RNK	Amherst, Rockbridge, City of Buena Vista, City of Lexington	9 hr
Sep 17, 6:03 AM EDT	Flash Flood Warning	RNK	Halifax	11 hr
Sep 17, 6:16 AM EDT	Areal Flood Advisory	RNK	Alleghany, Bath, Craig, City of Covington	6 hr
Sep 17, 8:36 AM EDT	Areal Flood Warning	RNK	Franklin, Roanoke, City of Roanoke, City of Salem	9 hr
Sep 17, 9:14 AM EDT	Areal Flood Advisory	RNK	Appomattox, Buckingham, Charlotte	4 hr
Sep 17, 10:01 AM EDT	Flash Flood Warning	RNK	Charlotte	7 hr
Sep 17, 10:12 AM EDT	Special Weather Statement	RNK	Halifax	33 min
Sep 17, 2:15 PM EDT	River Flood Warning	RNK	Charlotte, Halifax	67 hr
Sep 17, 2:58 PM EDT	Special Weather Statement	RNK	Charlotte	47 min
Sep 17, 4:05 PM EDT	Special Weather Statement	RNK	Charlotte	55 min
Sep 17, 5:11 PM EDT	Areal Flood Warning	RNK	Charlotte, Halifax	6 hr
Sep 17, 5:33 PM EDT	Special Weather Statement	RNK	Appomattox, Buckingham, Campbell	57 min
Sep 17, 6:24 PM EDT	Areal Flood Advisory	RNK	Buckingham	111 min
Sep 17, 6:49 PM EDT	Areal Flood Warning	RNK	Grayson, City of Galax	116 min
Sep 17, 7:57 PM EDT	Areal Flood Warning	RNK	Carroll, City of Galax	2 hr

Nearby

Tornado Warnings in Virginia, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.