Alert archive / Virginia / Tornado Warnings in 2010

Tornado Warning 21, NWS Blacksburg, VA

October 27, 2010Charlotte County, Halifax County, Virginia

NWS Blacksburg, VA issued this tornado warning at Oct 27, 2010, 2:49 AM EDT for Charlotte County, Halifax County, Virginia. It was in force for 26 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: Oct 27, 2010, 2:49 AM EDT (06:49 UTC)
Expired: Oct 27, 2010, 3:15 AM EDT
In force: 26 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon

Counties Charlotte County, VA, Halifax County, VA

The radar

The Raleigh/Durham radar (KRAX), 110 km from the middle of the area, began a volume at 06:50 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
Oct 27, 2:52 AM EDT	TSTM WND DMG	3 N Virgilina, VA	NUMEROUS TREES DOWN AND SOME STRUCTURAL DAMAGE IN THE VIRGILINA AREA. MORE DETAILS TO FOLLOW LATER THIS MORNING.

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.

Issued	Product	Office	Lasted
Oct 26, 7:19 PM EDT	Tornado Watch	SPC	12 hr
Oct 27, 2:44 AM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Roanoke, VA (KRNK), launched 00:00Z, 6.8 hours before the alert went out and 96 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: 321 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 695 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 398 m²/s²
0-3 km storm-relative helicity: 510 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 3.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

598 
WFUS51 KRNK 270649
TORRNK
VAC037-083-270715-
/O.NEW.KRNK.TO.W.0021.101027T0649Z-101027T0715Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
249 AM EDT WED OCT 27 2010

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN HALIFAX COUNTY IN SOUTH CENTRAL VIRGINIA
  SOUTHERN CHARLOTTE COUNTY IN SOUTH CENTRAL VIRGINIA

* UNTIL 315 AM EDT.

* AT 245 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  HITESBURG...OR NEAR VIRGILINA...MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  HITESBURG...
  STAUNTON RIVER STATE PARK...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN IT IS SAFE TO DO SO...PLEASE RELAY YOUR SEVERE WEATHER REPORTS
TO THE NATIONAL WEATHER SERVICE BY CALLING TOLL FREE AT...1...8 6
6...2 1 5...4 3 2 4.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 AM EDT WEDNESDAY MORNING
FOR NORTHWESTERN NORTH CAROLINA AND SOUTH CENTRAL VIRGINIA. A TORNADO
WATCH ALSO REMAINS IN EFFECT UNTIL 300 AM EDT WEDNESDAY MORNING FOR
NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA AND SOUTHEAST
WEST VIRGINIA.

&&

LAT...LON 3663 7857 3665 7862 3669 7865 3667 7869
      3659 7871 3655 7873 3654 7876 3654 7882
      3665 7888 3677 7862 3676 7860 3669 7863
      3664 7854
TIME...MOT...LOC 0649Z 246DEG 40KT 3664 7875

$$

PEM

2 follow-up statements

849 
WWUS51 KRNK 270702
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
302 AM EDT WED OCT 27 2010

VAC037-083-270715-
/O.CON.KRNK.TO.W.0021.000000T0000Z-101027T0715Z/
HALIFAX VA-CHARLOTTE VA-
302 AM EDT WED OCT 27 2010

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 AM EDT FOR SOUTHERN
CHARLOTTE AND SOUTHEASTERN HALIFAX COUNTIES...

AT 300 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR STAUNTON RIVER
STATE PARK...OR 7 MILES SOUTH OF REDOAK...MOVING NORTHEAST AT 45 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN BLACKSBURG AT...1...8 6 6...2 1 5...4 3 2 4...WHEN YOU CAN
DO SO SAFELY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 AM EDT WEDNESDAY MORNING
FOR NORTHWESTERN NORTH CAROLINA AND SOUTH CENTRAL VIRGINIA.

&&

LAT...LON 3663 7857 3665 7862 3669 7865 3667 7869
      3659 7871 3655 7873 3654 7876 3654 7882
      3665 7888 3677 7862 3676 7860 3669 7863
      3664 7854
TIME...MOT...LOC 0701Z 246DEG 40KT 3669 7860

$$

PEM

327 
WWUS51 KRNK 270718
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
318 AM EDT WED OCT 27 2010

VAC037-083-270725-
/O.EXP.KRNK.TO.W.0021.000000T0000Z-101027T0715Z/
HALIFAX VA-CHARLOTTE VA-
318 AM EDT WED OCT 27 2010

...THE TORNADO WARNING FOR SOUTHERN CHARLOTTE AND SOUTHEASTERN
HALIFAX COUNTIES EXPIRED AT 315 AM EDT...

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN 
CHARLOTTE AND SOUTHEASTERN HALIFAX COUNTIES UNTIL 330 AM EDT...

THUNDERSTORMS CONTINUE IN THE VICINITY OF THE STAUNTON RIVER STATE 
PARK. THESE STORMS MAY PRODUCE DAMAGING WIND GUSTS.

TO REPORT SEVERE WEATHER...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN BLACKSBURG AT...1...8 6 6...2 1 5...4 3 2 4.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 AM EDT WEDNESDAY MORNING
FOR NORTHWESTERN NORTH CAROLINA AND SOUTH CENTRAL VIRGINIA.

LAT...LON 3663 7857 3665 7862 3669 7865 3667 7869
      3659 7871 3655 7873 3654 7876 3654 7882
      3665 7888 3677 7862 3676 7860 3669 7863
      3664 7854
TIME...MOT...LOC 0715Z 246DEG 40KT 3675 7842

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 26, 8:30 PM EDT	Special Weather Statement	RNK	Carroll, Floyd, Franklin, Patrick, City of Galax	60 min
Oct 26, 9:55 PM EDT	Special Weather Statement	RNK	Alleghany, Bath, Craig, City of Covington	65 min
Oct 26, 10:08 PM EDT	Special Weather Statement	RNK	Franklin, Patrick	52 min
Oct 26, 11:21 PM EDT	Severe Thunderstorm Warning	RNK	Franklin, Henry, Patrick, Pittsylvania, City of Martinsville	54 min
Oct 26, 11:27 PM EDT	Tornado Warning	RNK	Franklin, Henry, Patrick, Pittsylvania, City of Martinsville	48 min
Oct 27, 12:16 AM EDT	Tornado Warning	RNK	Henry, Pittsylvania, City of Danville	44 min
Oct 27, 1:58 AM EDT	Special Weather Statement	RNK	Pittsylvania, City of Danville	47 min
Oct 27, 2:42 AM EDT	Severe Thunderstorm Warning	RNK	Charlotte, Halifax	48 min
Oct 27, 4:19 AM EDT	Special Weather Statement	RNK	City of Danville	56 min
Oct 27, 5:04 AM EDT	Special Weather Statement	RNK	Craig, Montgomery, Roanoke, City of Salem	56 min
Oct 27, 3:11 PM EDT	Special Weather Statement	RNK	Appomattox	34 min
Oct 27, 3:15 PM EDT	Severe Thunderstorm Warning	RNK	Appomattox, Buckingham, Campbell	42 min
Oct 27, 4:02 PM EDT	River Flood Warning	RNK	Halifax	60 hr
Oct 27, 5:50 PM EDT	Special Weather Statement	RNK	Appomattox, Campbell	40 min
Oct 27, 6:50 PM EDT	Special Weather Statement	RNK	Appomattox, Buckingham	40 min
Oct 27, 7:32 PM EDT	Severe Thunderstorm Warning	RNK	Henry, Pittsylvania	73 min
Oct 27, 7:51 PM EDT	Tornado Warning	RNK	Henry, Pittsylvania, City of Danville	54 min

Nearby

Tornado Warnings in Virginia, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.