Alert archive / North Carolina / Tornado Warnings in 2017

Tornado Warning 4, NWS Blacksburg, VA

May 1, 2017Caswell County, Rockingham County, North Carolina; City of Danville, Virginia

NWS Blacksburg, VA issued this tornado warning at May 1, 2017, 5:51 PM EDT for Caswell County, Rockingham County, North Carolina; City of Danville, Virginia. It was in force for 24 min. 1 report 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: May 1, 2017, 5:51 PM EDT (21:51 UTC)
Expired: May 1, 2017, 6:15 PM EDT
In force: 24 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Caswell County, NC, Rockingham County, NC, City of Danville, VA

The radar

The Roanoke radar (KFCX), 86 km from the middle of the area, began a volume at 21:52 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

Time	Report	Where	Remark
May 1, 6:05 PM EDT	TSTM WND DMG	6 S Eden, NC	ONE TREE DOWN ON ROACH ROAD

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

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.9 hours before the alert went out and 47 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: 76 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 679 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 163 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted.

192 
WFUS51 KRNK 012151
TORRNK
NCC033-157-VAC590-012215-
/O.NEW.KRNK.TO.W.0004.170501T2151Z-170501T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service BLACKSBURG VA
551 PM EDT MON MAY 1 2017

The National Weather Service in BLACKSBURG has issued a

* Tornado Warning for...
  Rockingham County in north central North Carolina...
  Northwestern Caswell County in north central North Carolina...
  The southwestern City of Danville in south central Virginia...

* Until 615 PM EDT
    
* At 551 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Bethany, 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. 

* This dangerous storm will be near...
  Bethany and Intelligence around 555 PM EDT. 
  Monroeton around 600 PM EDT. 
  Reidsville and Wentworth around 605 PM EDT. 

Other locations impacted by this tornadic thunderstorm include Haw
River State Park and Belews Lake.

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 3626 8000 3630 8003 3654 7960 3654 7947
      3657 7946 3658 7949 3659 7950 3661 7948
      3638 7931 3624 7967
TIME...MOT...LOC 2151Z 239DEG 44KT 3627 7990 

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

$$

Loconto

2 follow-up statements

615 
WWUS51 KRNK 012208
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
608 PM EDT MON MAY 1 2017

NCC033-157-VAC590-012215-
/O.CON.KRNK.TO.W.0004.000000T0000Z-170501T2215Z/
Rockingham NC-Caswell NC-City of Danville VA-
608 PM EDT MON MAY 1 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM EDT FOR 
EASTERN ROCKINGHAM...AND NORTHWESTERN CASWELL COUNTIES AND THE
SOUTHWESTERN CITY OF DANVILLE...
    
At 608 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Wentworth, 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. 

This tornadic thunderstorm will remain over mainly rural areas of 
eastern Rockingham...and northwestern Caswell Counties and the
southwestern City of Danville.

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 3627 7973 3640 7985 3654 7960 3654 7947
      3657 7946 3658 7949 3659 7950 3661 7948
      3650 7940 3644 7936
TIME...MOT...LOC 2208Z 236DEG 43KT 3640 7973 

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

$$

Loconto

208 
WWUS51 KRNK 012213
SVSRNK

Severe Weather Statement
National Weather Service BLACKSBURG VA
613 PM EDT MON MAY 1 2017

NCC033-157-VAC590-012222-
/O.EXP.KRNK.TO.W.0004.000000T0000Z-170501T2215Z/
Rockingham NC-Caswell NC-City of Danville VA-
613 PM EDT MON MAY 1 2017

...THE TORNADO WARNING FOR 
EASTERN ROCKINGHAM...AND NORTHWESTERN CASWELL COUNTIES AND THE
SOUTHWESTERN CITY OF DANVILLE WILL EXPIRE AT 615 PM EDT...
    
The tornado threat has diminished and the Tornado Warning has been 
allowed to expire. However, large hail and damaging winds remain 
likely and a Severe Thunderstorm Warning remains in effect for the 
area. 

A severe thunderstorm watch remains in effect until 1100 PM EDT for
north central North Carolina...and south central 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 3627 7973 3640 7985 3654 7960 3654 7947
      3657 7946 3658 7949 3659 7950 3661 7948
      3650 7940 3644 7936
TIME...MOT...LOC 2212Z 239DEG 44KT 3641 7970 

$$

Loconto

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 2:23 PM EDT	Wind Advisory	RNK	Alleghany, Ashe, Watauga	26 hr
May 1, 2:53 PM EDT	Areal Flood Advisory	RNK	Watauga	5 hr
May 1, 4:01 PM EDT	Special Weather Statement	RNK	Alleghany, Surry, Wilkes	59 min
May 1, 4:06 PM EDT	Special Weather Statement	RNK	Rockingham	54 min
May 1, 4:53 PM EDT	Special Weather Statement	RNK	Stokes, Surry, Yadkin	52 min
May 1, 5:32 PM EDT	Severe Thunderstorm Warning	RNK	Caswell, Rockingham, Stokes	58 min
May 1, 6:25 PM EDT	Severe Thunderstorm Warning	RNK	Caswell, Rockingham	65 min
May 1, 6:58 PM EDT	Severe Thunderstorm Warning	RNK	Caswell	77 min
May 1, 3:29 PM EDT	Special Weather Statement	RNK	Grayson, Pulaski, Wythe, City of Radford	61 min
May 1, 4:52 PM EDT	Special Weather Statement	RNK	Amherst, Appomattox, Campbell, City of Lynchburg	53 min
May 1, 5:04 PM EDT	Special Weather Statement	RNK	Pittsylvania	56 min
May 1, 5:10 PM EDT	Severe Thunderstorm Warning	RNK	Campbell, Halifax, Pittsylvania	43 min
May 1, 5:16 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Appomattox, Buckingham	74 min
May 1, 5:49 PM EDT	Severe Thunderstorm Warning	RNK	Appomattox, Buckingham, Campbell, Charlotte	26 min
May 1, 6:20 PM EDT	Special Weather Statement	RNK	Amherst, Bedford, Campbell, City of Lynchburg	40 min

Nearby

Tornado Warnings in North Carolina, 2017 Tornado Warnings in Virginia, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.