Alert archive / West Virginia / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 21, NWS Blacksburg, VA

April 5, 2010Giles County, Virginia; 4 counties in West Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Apr 5, 2010, 11:56 PM EDT for Giles County, Virginia; 4 counties in West Virginia. It was in force for 79 min. 2 reports 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: Apr 5, 2010, 11:56 PM EDT (03:56 UTC)
Expired: Apr 6, 2010, 1:15 AM EDT
In force: 79 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon

Counties Giles County, VA, Greenbrier County, WV, Mercer County, WV, Monroe County, WV, Summers County, WV

The radar

The Roanoke radar (KFCX), 89 km from the middle of the area, began a volume at 03:59 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
Apr 6, 12:16 AM EDT	HAIL 1	5 Wsw Hinton, WV
Apr 6, 12:20 AM EDT	TSTM WND DMG	4 Ssw Hinton, WV	LARGE TREE LIMBS ALONG ROUTE 20 JUST SOUTH OF THE BLUESTONE RIVER BRIDGE.

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

The nearest sounding before it

Roanoke, VA (KRNK), launched 00:00Z, 3.9 hours before the alert went out and 132 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: 784 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 1578 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.8

Open this sounding in Storm Lab

The text

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

083 
WUUS51 KRNK 060356
SVRRNK
VAC071-WVC025-055-063-089-060515-
/O.NEW.KRNK.SV.W.0021.100406T0356Z-100406T0515Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
1156 PM EDT MON APR 5 2010

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN GILES COUNTY IN SOUTHWEST VIRGINIA
  NORTHEASTERN MERCER COUNTY IN SOUTHEAST WEST VIRGINIA
  MONROE COUNTY IN SOUTHEAST WEST VIRGINIA
  SOUTHERN GREENBRIER COUNTY IN SOUTHEAST WEST VIRGINIA
  SUMMERS COUNTY IN SOUTHEAST WEST VIRGINIA

* UNTIL 115 AM EDT.

* AT 1150 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE DAMAGING HAIL UP TO
  GOLF BALL SIZE.  THIS STORM WAS LOCATED 10 MILES NORTHWEST OF FLAT
  TOP...OR 6 MILES SOUTH OF BECKLEY...AND MOVING EAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  JUMPING BRANCH...
  BLUESTONE STATE PARK...
  BLUESTONE DAM...
  BUCK...
  BALLENGEE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

WHEN IT IS SAFE TO DO SO...PLEASE SEND YOUR REPORTS OF QUARTER OR
LARGER SIZED HAIL...AS WELL AS WIND DAMAGE...INCLUDING TREES OR OR
LARGE LIMBS DOWNED BY CALLING THE NATIONAL WEATHER SERVICE TOLL FREE
AT...1...8 6 6...2 1 5...4 3 2 4.

&&

LAT...LON 3764 8031 3729 8056 3757 8119 3760 8116
      3760 8109 3761 8107 3765 8107 3769 8098
      3772 8097 3771 8090 3775 8092 3778 8090
      3782 8094 3783 8085
TIME...MOT...LOC 0355Z 283DEG 33KT 3769 8117

$$

DS

7 follow-up statements

957 
WWUS51 KRNK 060412
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1212 AM EDT TUE APR 6 2010

WVC025-060420-
/O.CAN.KRNK.SV.W.0021.000000T0000Z-100406T0515Z/
GREENBRIER WV-
1212 AM EDT TUE APR 6 2010

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN GREENBRIER COUNTY IS
CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS MOVED SOUTH OF THE 
COUNTY...THEREFORE THE WARNING HAS BEEN CANCELLED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

&&

LAT...LON 3774 8066 3772 8065 3769 8049 3764 8031
      3729 8056 3755 8113 3761 8107 3765 8107
      3769 8098 3772 8097 3771 8090 3772 8090
      3777 8077
TIME...MOT...LOC 0410Z 292DEG 33KT 3764 8101

$$

VAC071-WVC055-063-089-060515-
/O.CON.KRNK.SV.W.0021.000000T0000Z-100406T0515Z/
GILES VA-MERCER WV-MONROE WV-SUMMERS WV-
1212 AM EDT TUE APR 6 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM EDT
FOR SUMMERS...MONROE...NORTHEASTERN MERCER AND NORTHEASTERN GILES
COUNTIES...

AT 1207 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE DAMAGING
HAIL UP TO GOLF BALL SIZE.  THIS STORM WAS LOCATED NEAR JUMPING
BRANCH...OR 8 MILES WEST OF HINTON...MOVING EAST AT 40 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING QUARTER TO GOLF BALL SIZE 
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM 
WINDOWS!

&&

LAT...LON 3774 8066 3772 8065 3769 8049 3764 8031
      3729 8056 3755 8113 3761 8107 3765 8107
      3769 8098 3772 8097 3771 8090 3772 8090
      3777 8077
TIME...MOT...LOC 0410Z 292DEG 33KT 3764 8101

$$

DS

097 
WWUS51 KRNK 060425
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1225 AM EDT TUE APR 6 2010

WVC055-060435-
/O.CAN.KRNK.SV.W.0021.000000T0000Z-100406T0515Z/
MERCER WV-
1225 AM EDT TUE APR 6 2010

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MERCER COUNTY IS
CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS EXITED COUNTY. 
THEREFORE...THE WARNING HAS BEEN CANCELLED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

&&

LAT...LON 3772 8065 3769 8049 3764 8031 3729 8056
      3743 8086 3744 8086 3750 8094 3758 8099
      3768 8095 3771 8091 3771 8090 3772 8089
TIME...MOT...LOC 0425Z 292DEG 33KT 3759 8085

$$

VAC071-WVC063-089-060515-
/O.CON.KRNK.SV.W.0021.000000T0000Z-100406T0515Z/
GILES VA-MONROE WV-SUMMERS WV-
1225 AM EDT TUE APR 6 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM EDT
FOR SOUTHERN SUMMERS...MONROE AND NORTHEASTERN GILES COUNTIES...

AT 1224 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING ONE INCH DIAMETER
SIZE HAIL.  THIS STORM WAS LOCATED NEAR BUCK...OR 6 MILES SOUTH OF
HINTON...MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  BUCK...
  INDIAN MILLS...
  WAYSIDE...
  RAINES CORNER...
  ZENITH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER.
REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...
DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY
HEAVY RAIN.

&&

LAT...LON 3772 8065 3769 8049 3764 8031 3729 8056
      3743 8086 3744 8086 3750 8094 3758 8099
      3768 8095 3771 8091 3771 8090 3772 8089
TIME...MOT...LOC 0425Z 292DEG 33KT 3759 8085

$$

DS

445 
WWUS51 KRNK 060436
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1236 AM EDT TUE APR 6 2010

VAC071-WVC063-089-060515-
/O.CON.KRNK.SV.W.0021.000000T0000Z-100406T0515Z/
GILES VA-MONROE WV-SUMMERS WV-
1236 AM EDT TUE APR 6 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM EDT
FOR EASTERN SUMMERS...MONROE AND NORTHEASTERN GILES COUNTIES...

AT 1233 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING ONE INCH DIAMETER
SIZE HAIL.  THIS STORM WAS LOCATED NEAR BALLENGEE...OR 8 MILES
SOUTHEAST OF HINTON...MOVING EAST AT 40 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER.
REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...
DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY
HEAVY RAIN.

&&

LAT...LON 3769 8049 3764 8031 3734 8052 3754 8085
      3761 8083 3772 8065
TIME...MOT...LOC 0436Z 292DEG 33KT 3758 8075

$$

DS

721 
WWUS51 KRNK 060446
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1246 AM EDT TUE APR 6 2010

WVC089-060456-
/O.CAN.KRNK.SV.W.0021.000000T0000Z-100406T0515Z/
SUMMERS WV-
1246 AM EDT TUE APR 6 2010

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN SUMMERS COUNTY IS
CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS EXITED THE COUNTY. 
THEREFORE...THE WARNING HAS BEEN CANCELLED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

&&

LAT...LON 3764 8031 3742 8046 3742 8048 3742 8047
      3739 8048 3754 8072 3759 8075 3765 8064
      3769 8049
TIME...MOT...LOC 0446Z 288DEG 33KT 3756 8063

$$

VAC071-WVC063-060515-
/O.CON.KRNK.SV.W.0021.000000T0000Z-100406T0515Z/
GILES VA-MONROE WV-
1246 AM EDT TUE APR 6 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM EDT
FOR MONROE AND NORTHEASTERN GILES COUNTIES...

AT 1241 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING ONE INCH DIAMETER
SIZE HAIL.  THIS STORM WAS LOCATED NEAR WAYSIDE...OR 8 MILES WEST OF
UNION...MOVING EAST AT 40 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER.
REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...
DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY
HEAVY RAIN.

&&

LAT...LON 3764 8031 3742 8046 3742 8048 3742 8047
      3739 8048 3754 8072 3759 8075 3765 8064
      3769 8049
TIME...MOT...LOC 0446Z 288DEG 33KT 3756 8063

$$

DS

350 
WWUS51 KRNK 060455
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1255 AM EDT TUE APR 6 2010

VAC071-060505-
/O.CAN.KRNK.SV.W.0021.000000T0000Z-100406T0515Z/
GILES VA-
1255 AM EDT TUE APR 6 2010

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GILES COUNTY IS
CANCELLED...

THE STORM THAT PROPTED THE WARNING IS GOING TO REMAIN OUTSIDE OF 
GILES COUNTY...THEREFORE THE WARNING HAS BEEN CANCELLED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

&&

LAT...LON 3762 8033 3743 8045 3743 8046 3745 8049
      3746 8049 3748 8051 3747 8053 3753 8063
      3759 8065 3763 8047
TIME...MOT...LOC 0455Z 288DEG 33KT 3755 8055

$$

WVC063-060515-
/O.CON.KRNK.SV.W.0021.000000T0000Z-100406T0515Z/
MONROE WV-
1255 AM EDT TUE APR 6 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM EDT
FOR CENTRAL MONROE COUNTY...

AT 1250 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING ONE INCH DIAMETER
SIZE HAIL.  THIS STORM WAS LOCATED NEAR UNION...MOVING EAST AT 40
MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER.
REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...
DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY
HEAVY RAIN.

&&

LAT...LON 3762 8033 3743 8045 3743 8046 3745 8049
      3746 8049 3748 8051 3747 8053 3753 8063
      3759 8065 3763 8047
TIME...MOT...LOC 0455Z 288DEG 33KT 3755 8055

$$

DS

160 
WWUS51 KRNK 060505
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
105 AM EDT TUE APR 6 2010

WVC063-060515-
/O.CON.KRNK.SV.W.0021.000000T0000Z-100406T0515Z/
MONROE WV-
105 AM EDT TUE APR 6 2010

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM EDT
FOR CENTRAL MONROE COUNTY...

AT 103 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING ONE INCH DIAMETER
SIZE HAIL.  THIS STORM WAS LOCATED NEAR GAP MILLS...OR NEAR UNION...
MOVING EAST AT 40 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER.
REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...
DAMAGING WINDS IN EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY
HEAVY RAIN.

&&

LAT...LON 3745 8044 3751 8050 3755 8049 3758 8046
      3759 8035 3749 8041
TIME...MOT...LOC 0505Z 288DEG 33KT 3753 8043

$$

DS

439 
WWUS51 KRNK 060513
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
113 AM EDT TUE APR 6 2010

WVC063-060523-
/O.EXP.KRNK.SV.W.0021.000000T0000Z-100406T0515Z/
MONROE WV-
113 AM EDT TUE APR 6 2010

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MONROE COUNTY EXPIRES
AT 115 AM EDT...

THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED BELOW 
SEVERE LIMITS. THUS THE WARNING WILL BE ALLOWED TO EXPIRE. HAIL THE 
SIZE OF PENNIES IS STILL POSSIBLE WITH THIS STORM AS IT APPROACHES 
CRAIG SPRINGS VIRGINIA.

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

LAT...LON 3745 8044 3751 8050 3755 8049 3758 8046
      3759 8035 3749 8041
TIME...MOT...LOC 0513Z 288DEG 33KT 3751 8034

$$

DS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 5, 8:19 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Craig, Giles	28 min
Apr 5, 10:19 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Botetourt, Craig, City of Covington	56 min
Apr 5, 11:29 PM EDT	Special Weather Statement	RNK	Botetourt	16 min
Apr 5, 11:53 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Bath, Botetourt, Craig, Rockbridge, City of Covington and 1 more	52 min
Apr 6, 12:42 AM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Bedford, Botetourt, Craig, Roanoke, Rockbridge	33 min
Apr 6, 1:16 AM EDT	Special Weather Statement	RNK	Craig	29 min
Apr 6, 1:17 AM EDT	Special Weather Statement	RNK	Amherst, Bedford, Campbell, City of Lynchburg	28 min
Apr 6, 1:44 AM EDT	Special Weather Statement	RNK	Appomattox, Buckingham, Campbell, Charlotte	61 min
Apr 6, 2:48 AM EDT	Special Weather Statement	RNK	Bath	57 min
Apr 5, 9:33 PM EDT	Severe Thunderstorm Warning	RNK	Greenbrier, Summers	57 min
Apr 5, 10:36 PM EDT	Severe Thunderstorm Warning	RNK	Greenbrier	84 min
Apr 5, 11:16 PM EDT	Special Weather Statement	RNK	Monroe	29 min

Nearby

Severe Thunderstorm Warnings in West Virginia, 2010 Severe Thunderstorm Warnings in Virginia, 2010 Every severe thunderstorm warning 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.