Alert archive / Virginia / Tornado Warnings in 2018

Tornado Warning 7, NWS Blacksburg, VA

April 15, 2018Buckingham County, Virginia

NWS Blacksburg, VA issued this tornado warning at Apr 15, 2018, 7:34 PM EDT for Buckingham County, Virginia. It was in force for 26 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
Apr 15, 2018, 7:34 PM EDT (23:34 UTC)
Expired
Apr 15, 2018, 8:00 PM EDT
In force
26 min
Issued by
NWS Blacksburg, VA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

County Buckingham County, VA

The radar

The Roanoke radar (KFCX), 158 km from the middle of the area, began a volume at 23:35 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 watch it was issued in

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

IssuedProductOfficeLasted
Apr 15, 3:02 PM EDTTornado WatchSPC8 hr

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 11.6 hours before the alert went out and 89 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 2018-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 12:00Z on 2018-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 143 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
881 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
143 m²/s²
0-3 km storm-relative helicity
148 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

521 
WFUS51 KRNK 152334
TORRNK
VAC029-160000-
/O.NEW.KRNK.TO.W.0007.180415T2334Z-180416T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service BLACKSBURG VA
734 PM EDT SUN APR 15 2018

The National Weather Service in BLACKSBURG has issued a

* Tornado Warning for...
  Northwestern Buckingham County in central Virginia...

* Until 800 PM EDT
    
* At 733 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Wingina, moving northeast at 50 mph.

  HAZARD...Tornado and quarter size hail. 

  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...
  Wingina...
  and Centenary.

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.

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 7870 3755 7883 3757 7881 3759 7883
      3760 7881 3763 7882 3764 7880 3764 7872
      3767 7872 3768 7869 3770 7869 3768 7866
      3768 7864 3771 7865 3775 7862 3776 7855
      3776 7851 3780 7849 3776 7847 3773 7841
TIME...MOT...LOC 2333Z 207DEG 43KT 3758 7875 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

PW
2 follow-up statements
301 
WWUS51 KRNK 152341
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
741 PM EDT SUN APR 15 2018

VAC029-160000-
/O.CON.KRNK.TO.W.0007.000000T0000Z-180416T0000Z/
Buckingham VA-
741 PM EDT SUN APR 15 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM EDT FOR 
NORTHWESTERN BUCKINGHAM COUNTY...
    
At 741 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Wingina, moving northeast at 45 mph.

HAZARD...Tornado and quarter size hail. 

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...
Wingina...
and Centenary.

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.

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 3754 7862 3764 7880 3764 7872 3767 7872
      3768 7869 3770 7869 3768 7866 3768 7864
      3771 7865 3775 7862 3776 7855 3776 7851
      3780 7849 3776 7847 3773 7841
TIME...MOT...LOC 2341Z 211DEG 40KT 3765 7868 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

PW
753 
WWUS51 KRNK 152352
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
752 PM EDT SUN APR 15 2018

VAC029-160002-
/O.EXP.KRNK.TO.W.0007.000000T0000Z-180416T0000Z/
Buckingham VA-
752 PM EDT SUN APR 15 2018

...THE TORNADO WARNING FOR 
NORTHWESTERN BUCKINGHAM COUNTY WILL EXPIRE AT 800 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 1100 PM EDT for central and
south 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.

Remember, a Severe Thunderstorm Warning still remains in effect for 
Buckingham County until 815 PM.

LAT...LON 3754 7862 3764 7880 3764 7872 3767 7872
      3768 7869 3770 7869 3768 7866 3768 7864
      3771 7865 3775 7862 3776 7855 3776 7851
      3780 7849 3776 7847 3773 7841
TIME...MOT...LOC 2352Z 207DEG 43KT 3776 7861 

$$

PW

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 3:57 AM EDTFlash Flood WatchRNKAlleghany, Bath, Bland, Botetourt, Carroll, Craig and 21 more20 hr
Apr 15, 1:07 PM EDTSpecial Weather StatementRNKGrayson, Smyth38 min
Apr 15, 1:36 PM EDTSevere Thunderstorm WarningRNKGrayson69 min
Apr 15, 1:45 PM EDTSpecial Weather StatementRNKTazewell30 min
Apr 15, 2:12 PM EDTSevere Thunderstorm WarningRNKCarroll, Patrick63 min
Apr 15, 2:34 PM EDTSpecial Weather StatementRNKBland, Wythe56 min
Apr 15, 2:41 PM EDTSevere Thunderstorm WarningRNKBland, Carroll, Grayson, Pulaski, Wythe, City of Galax and 1 more64 min
Apr 15, 2:48 PM EDTAreal Flood AdvisoryRNKCarroll, Grayson, City of Galax3 hr
Apr 15, 3:33 PM EDTSevere Thunderstorm WarningRNKCarroll, Floyd, Franklin, Patrick, Pulaski57 min
Apr 15, 3:43 PM EDTSpecial Weather StatementRNKGiles, Montgomery, City of Radford62 min
Apr 15, 3:57 PM EDTSevere Thunderstorm WarningRNKBotetourt, Craig, Floyd, Franklin, Giles, Montgomery and 5 more63 min
Apr 15, 4:08 PM EDTSevere Thunderstorm WarningRNKFloyd, Henry, Patrick, City of Martinsville67 min
Apr 15, 4:17 PM EDTAreal Flood AdvisoryRNKCarroll3 hr
Apr 15, 4:37 PM EDTAreal Flood AdvisoryRNKFloyd, Montgomery, Pulaski, City of Radford3 hr
Apr 15, 5:12 PM EDTSevere Thunderstorm WarningRNKBedford, Botetourt, Floyd, Franklin, Henry, Patrick and 4 more63 min
Apr 15, 5:45 PM EDTTornado WarningRNKPittsylvania, City of Danville45 min
Apr 15, 6:04 PM EDTSevere Thunderstorm WarningRNKCharlotte, Halifax, City of Danville56 min
Apr 15, 6:12 PM EDTSevere Thunderstorm WarningRNKAmherst, Bedford, Botetourt, Rockbridge, City of Buena Vista, City of Lexington78 min
Apr 15, 6:23 PM EDTTornado WarningRNKBedford, Campbell, Pittsylvania26 min
Apr 15, 6:47 PM EDTSevere Thunderstorm WarningRNKAmherst, Appomattox, Bedford, Buckingham, Campbell, Charlotte and 3 more88 min
Apr 15, 7:07 PM EDTTornado WarningRNKAmherst, Bedford, Campbell, City of Lynchburg38 min

Nearby

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