Alert archive / Virginia / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 13, NWS Blacksburg, VA

May 10, 2014Carroll County, Grayson County, City of Galax, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at May 10, 2014, 1:47 PM EDT for Carroll County, Grayson County, City of Galax, Virginia. It was in force for 43 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 10, 2014, 1:47 PM EDT (17:47 UTC)
Expired: May 10, 2014, 2:30 PM EDT
In force: 43 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Carroll County, VA, City of Galax, VA, Grayson County, VA

The radar

The Roanoke radar (KFCX), 76 km from the middle of the area, began a volume at 17:50 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
May 10, 1:47 PM EDT	HAIL 0.75	Independence, VA

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, 5.8 hours before the alert went out and 125 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: 133 J/kg
Mixed-layer CIN: -134 J/kg
Mixed-layer LCL: 1417 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: -22 m²/s²
0-3 km storm-relative helicity: -54 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

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

309 
WUUS51 KRNK 101747
SVRRNK
VAC035-077-640-101830-
/O.NEW.KRNK.SV.W.0013.140510T1747Z-140510T1830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
147 PM EDT SAT MAY 10 2014

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  THE CITY OF GALAX IN SOUTHWEST VIRGINIA...
  EASTERN GRAYSON COUNTY IN SOUTHWEST VIRGINIA...
  WESTERN CARROLL COUNTY IN SOUTHWEST VIRGINIA...

* UNTIL 230 PM EDT

* AT 147 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR BAYWOOD...
  MOVING NORTHEAST AT 35 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  GALAX...
  HILLSVILLE...
  INDEPENDENCE...
  FRIES...
  AND FANCY GAP. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

WHEN IT IS SAFE TO DO SO...PLEASE SEND YOUR REPORTS OF HAIL OF ANY
SIZE...AS WELL AS ANY REPORTS OF 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 3677 8113 3677 8109 3678 8108 3684 8090
      3686 8082 3667 8069 3656 8114 3657 8117
      3672 8128
TIME...MOT...LOC 1747Z 243DEG 29KT 3664 8107 

HAIL...1.00IN
WIND...60MPH

$$

2 follow-up statements

664 
WWUS51 KRNK 101806
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
206 PM EDT SAT MAY 10 2014

VAC035-077-640-101830-
/O.CON.KRNK.SV.W.0013.000000T0000Z-140510T1830Z/
CITY OF GALAX VA-GRAYSON VA-CARROLL VA-
206 PM EDT SAT MAY 10 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM EDT
FOR
EASTERN GRAYSON AND WESTERN CARROLL COUNTIES AND THE CITY OF GALAX...

AT 205 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER GALAX...MOVING
EAST AT 30 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING AND TREES. 

LOCATIONS IMPACTED INCLUDE...
GALAX...
HILLSVILLE...
FRIES...
FANCY GAP...
AND BAYWOOD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

WHEN IT IS SAFE TO DO SO...PLEASE SEND YOUR REPORTS OF HAIL OF ANY
SIZE...AS WELL AS ANY REPORTS OF 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 3684 8090 3686 8082 3667 8069 3658 8104
      3673 8106 3678 8108
TIME...MOT...LOC 1805Z 252DEG 28KT 3664 8089 

HAIL...1.00IN
WIND...60MPH

$$

811 
WWUS51 KRNK 101829
SVSRNK

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
229 PM EDT SAT MAY 10 2014

VAC035-077-640-101839-
/O.EXP.KRNK.SV.W.0013.000000T0000Z-140510T1830Z/
CITY OF GALAX VA-GRAYSON VA-CARROLL VA-
229 PM EDT SAT MAY 10 2014

...THE SEVERE THUNDERSTORM WARNING FOR 
EASTERN GRAYSON AND WESTERN CARROLL COUNTIES AND THE CITY OF GALAX
WILL EXPIRE AT 230 PM EDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS
AND EXITED THE WARNED AREA. THEREFORE THE WARNING WILL BE ALLOWED TO
EXPIRE.

WHEN IT IS SAFE TO DO SO...PLEASE SEND YOUR REPORTS OF HAIL OF ANY
SIZE...AS WELL AS ANY REPORTS OF 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 3684 8090 3686 8082 3667 8069 3658 8104
      3673 8106 3678 8108
TIME...MOT...LOC 1825Z 243DEG 29KT 3664 8089 

$$

RS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 1:19 PM EDT	Special Weather Statement	RNK	City of Danville	41 min
May 10, 1:37 PM EDT	Special Weather Statement	RNK	City of Galax	23 min
May 10, 1:38 PM EDT	Severe Thunderstorm Warning	RNK	Halifax, Pittsylvania, City of Danville	52 min
May 10, 2:20 PM EDT	Special Weather Statement	RNK	Carroll	25 min
May 10, 2:28 PM EDT	Severe Thunderstorm Warning	RNK	Charlotte, Halifax	62 min
May 10, 3:23 PM EDT	Special Weather Statement	RNK	Bedford	67 min
May 10, 3:33 PM EDT	Severe Thunderstorm Warning	RNK	Pittsylvania, City of Danville	57 min
May 10, 3:45 PM EDT	Special Weather Statement	RNK	Bedford	30 min
May 10, 4:02 PM EDT	Special Weather Statement	RNK	Halifax	43 min
May 10, 4:11 PM EDT	Special Weather Statement	RNK	Campbell	34 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2014 Every severe thunderstorm warning in 2014

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.