Alert archive / Virginia / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 113, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Jun 12, 2007, 3:56 PM EDT for Grayson County, Virginia; Alleghany County, North Carolina. It was in force for 58 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
- Jun 12, 2007, 3:56 PM EDT (19:56 UTC)
- Expired
- Jun 12, 2007, 4:54 PM EDT
- In force
- 58 min
- Issued by
- NWS Blacksburg, VA
- Area
- Counties, with a storm outline in the text
Counties Alleghany County, NC, Grayson County, VA
The radar
The Roanoke radar (KFCX), 90 km from the middle of the area, began a volume at 19:58 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 |
|---|---|---|---|
| Jun 12, 3:58 PM EDT | HAIL 0.75 | 5 Sw Galax, VA | NEAR DELHART |
| Jun 12, 4:20 PM EDT | HAIL 0.88 | Ennice, NC |
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 |
|---|---|---|---|
| Jun 12, 2:23 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.9 hours before the alert went out and 117 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.
- Mixed-layer CAPE
- 473 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 766 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -29 m²/s²
- 0-3 km storm-relative helicity
- 0 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KRNK 121956
SVRRNK
NCC005-VAC077-122130-
/O.NEW.KRNK.SV.W.0113.070612T1956Z-070612T2130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
356 PM EDT TUE JUN 12 2007
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
ALLEGHANY COUNTY IN NORTHWEST NORTH CAROLINA
SOUTHEASTERN GRAYSON COUNTY IN SOUTHWEST VIRGINIA
* UNTIL 530 PM EDT
* AT 354 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
BAYWOOD...OR ABOUT NEAR ENNICE...AND MOVING SOUTHWEST AT 20 MPH.
* LOCATIONS IMPACTED INCLUDE...
BAYWOOD...
ENNICE...
SPARTA...
WHITEHEAD...
PLEASE SEND YOUR REPORTS OF PENNY OR LARGER SIZED HAIL...AS WELL AS
WIND DAMAGE...INCLUDING TREES 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 3657 8089 3666 8097 3654 8132 3639 8124
3643 8115
$$
RCS2 follow-up statements
000
WWUS51 KRNK 122032
SVSRNK
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
432 PM EDT TUE JUN 12 2007
VAC077-122036-
/O.CAN.KRNK.SV.W.0113.000000T0000Z-070612T2130Z/
GRAYSON VA-
432 PM EDT TUE JUN 12 2007
...THE SEVERE THUNDERSTORM WARNING FOR GRAYSON COUNTY IS CANCELLED...
STORMS HAVE WEAKENED OR MOVED OUT OF THE COUNTY...THEREFORE THE
WARNING HAS BEEN CANCELLED FOR GRAYSON COUNTY. HOWEVER...SCATTERED
THUNDERSTORMS WITH LOCALLY HEAVY RAIN...DANGEROUS LIGHTNING...SMALL
HAIL...AND WIND GUSTS TO 40 MPH ARE STILL POSSIBLE IN THE SOUTHERN
PART OF THE COUNTY THROUGH 500 PM.
LAT...LON 3656 8091 3657 8119 3654 8132 3639 8124
3643 8115
$$
NCC005-122130-
/O.CON.KRNK.SV.W.0113.000000T0000Z-070612T2130Z/
ALLEGHANY NC-
432 PM EDT TUE JUN 12 2007
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR ALLEGHANY COUNTY...
AT 424 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR SPARTA...MOVING SOUTHWEST AT 10 MPH.
THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. NICKEL SIZE HAIL
WAS REPORTED IN ENNICE AT 420 PM.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TWIN
OAKS...STRATFORD...WHITEHEAD AND SCOTTVILLE.
LAT...LON 3656 8091 3657 8119 3654 8132 3639 8124
3643 8115
$$
RCS000
WWUS51 KRNK 122054
SVSRNK
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
453 PM EDT TUE JUN 12 2007
NCC005-122103-
/O.CAN.KRNK.SV.W.0113.000000T0000Z-070612T2130Z/
ALLEGHANY NC-
453 PM EDT TUE JUN 12 2007
...THE SEVERE THUNDERSTORM WARNING FOR ALLEGHANY COUNTY IS
CANCELLED...
STORMS HAVE WEAKENED OR MOVED OUT OF THE COUNTY...THEREFORE THE
WARNING HAS BEEN CANCELLED. HOWEVER...SCATTERED THUNDERSTORMS WITH
LOCALLY HEAVY RAIN...DANGEROUS LIGHTNING...SMALL HAIL...AND WIND
GUSTS TO 40 MPH ARE STILL POSSIBLE THROUGH 530 PM.
LAT...LON 3656 8091 3657 8119 3654 8132 3639 8124
3643 8115
$$
RCSThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 8:01 PM EDT | Severe Thunderstorm Warning | RNK | Bedford | 44 min |
| Jun 11, 8:22 PM EDT | Severe Thunderstorm Warning | RNK | Franklin | 68 min |
| Jun 12, 4:11 PM EDT | Severe Thunderstorm Warning | RNK | Buckingham | 80 min |
| Jun 12, 4:56 PM EDT | Severe Thunderstorm Warning | RNK | Appomattox | 64 min |
Nearby
Severe Thunderstorm Warnings in Virginia, 2007Severe Thunderstorm Warnings in North Carolina, 2007Every severe thunderstorm warning in 2007
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.