Alert archive / West Virginia / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 2, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Feb 28, 2011, 10:40 AM EST for 4 counties in West Virginia; Giles County, Virginia. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Feb 28, 2011, 10:40 AM EST (15:40 UTC)
- Expired
- Feb 28, 2011, 11:15 AM EST
- In force
- 35 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), 58 km from the middle of the area, began a volume at 15:41 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 28, 8:57 AM EST | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Roanoke, VA (KRNK), launched 12:00Z, 3.7 hours before the alert went out and 99 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
- 4 J/kg
- Mixed-layer CIN
- -263 J/kg
- Mixed-layer LCL
- 825 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 268 m²/s²
- 0-3 km storm-relative helicity
- 373 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
751
WUUS51 KRNK 281540
SVRRNK
VAC071-WVC025-055-063-089-281615-
/O.NEW.KRNK.SV.W.0002.110228T1540Z-110228T1615Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
1040 AM EST MON FEB 28 2011
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN GILES COUNTY IN SOUTHWEST VIRGINIA
MONROE COUNTY IN SOUTHEAST WEST VIRGINIA
EASTERN MERCER COUNTY IN SOUTHEAST WEST VIRGINIA
SOUTHERN GREENBRIER COUNTY IN SOUTHEAST WEST VIRGINIA
SOUTHERN SUMMERS COUNTY IN SOUTHEAST WEST VIRGINIA
* UNTIL 1115 AM EST.
* AT 1036 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM HIX TO OAKVALE...OR ALONG A LINE EXTENDING FROM 7 MILES EAST
OF HINTON TO 6 MILES EAST OF PRINCETON...AND MOVING EAST AT 60 MPH.
* LOCATIONS IMPACTED INCLUDE...
INDIAN MILLS...
WOLFCREEK...
UNION...
GLACE...
MONCOVE LAKE STATE PARK...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
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 LARGE
LIMBS DOWNED BY CALLING THE NATIONAL WEATHER SERVICE TOLL FREE AT...
1...8 6 6...2 1 5...4 3 2 4.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM EST MONDAY AFTERNOON
FOR SOUTHWESTERN VIRGINIA AND SOUTHEAST WEST VIRGINIA.
&&
LAT...LON 3772 8025 3769 8029 3762 8022 3757 8033
3753 8032 3754 8029 3751 8029 3742 8048
3739 8051 3725 8087 3725 8098 3727 8101
3730 8099 3725 8120 3772 8085 3776 8025
TIME...MOT...LOC 1540Z 279DEG 56KT 3769 8070 3735 8091
$$2 follow-up statements
797
WWUS51 KRNK 281553
SVSRNK
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1053 AM EST MON FEB 28 2011
VAC071-WVC025-055-063-089-281615-
/O.CON.KRNK.SV.W.0002.000000T0000Z-110228T1615Z/
GILES VA-MONROE WV-MERCER WV-GREENBRIER WV-SUMMERS WV-
1053 AM EST MON FEB 28 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 AM EST
FOR SOUTHERN SUMMERS...SOUTHERN GREENBRIER...EASTERN MERCER...MONROE
AND NORTHERN GILES COUNTIES...
AT 1050 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM PICKAWAY TO WILLOWTON...OR ALONG A LINE EXTENDING FROM
6 MILES NORTH OF UNION TO NARROWS...MOVING EAST AT 60 MPH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TO REPORT SEVERE WEATHER...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN BLACKSBURG AT...1...8 6 6...2 1 5...4 3 2 4...WHEN YOU CAN
DO SO SAFELY.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM EST MONDAY AFTERNOON
FOR SOUTHWESTERN VIRGINIA AND SOUTHEAST WEST VIRGINIA.
&&
LAT...LON 3772 8025 3769 8029 3762 8022 3757 8033
3753 8032 3754 8029 3751 8029 3742 8048
3739 8051 3725 8087 3725 8098 3727 8101
3730 8099 3725 8120 3772 8085 3776 8025
TIME...MOT...LOC 1553Z 279DEG 56KT 3766 8045 3731 8084
$$657
WWUS51 KRNK 281615
SVSRNK
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1115 AM EST MON FEB 28 2011
VAC071-WVC025-055-063-089-281625-
/O.EXP.KRNK.SV.W.0002.000000T0000Z-110228T1615Z/
GILES VA-MONROE WV-MERCER WV-GREENBRIER WV-SUMMERS WV-
1115 AM EST MON FEB 28 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN SUMMERS...SOUTHERN
GREENBRIER...EASTERN MERCER...MONROE AND NORTHERN GILES COUNTIES
EXPIRED AT 1115 AM EST...
THE SEVERE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS. THUS THE WARNING WILL BE ALLOWED TO EXPIRE.
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 400 PM EST MONDAY AFTERNOON
FOR SOUTHWESTERN VIRGINIA AND SOUTHEAST WEST VIRGINIA.
LAT...LON 3772 8025 3769 8029 3762 8022 3757 8033
3753 8032 3754 8029 3751 8029 3742 8048
3739 8051 3725 8087 3725 8098 3727 8101
3730 8099 3725 8120 3772 8085 3776 8025
TIME...MOT...LOC 1615Z 279DEG 56KT 3760 8002 3726 8041
$$
PEMThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 28, 9:24 AM EST | Severe Thunderstorm Warning | RNK | Greenbrier, Summers | 66 min |
| Feb 28, 10:07 AM EST | Special Weather Statement | RNK | Mercer, Summers | 53 min |
| Feb 28, 4:49 PM EST | Areal Flood Advisory | RNK | Mercer | 4 hr |
| Feb 28, 10:22 AM EST | Special Weather Statement | RNK | Bath | 53 min |
| Feb 28, 10:58 AM EST | Special Weather Statement | RNK | Bland, Pulaski, Smyth, Wythe, City of Radford | 47 min |
| Feb 28, 11:14 AM EST | Special Weather Statement | RNK | Amherst, Bedford, Botetourt, Craig, Montgomery, Roanoke and 5 more | 61 min |
| Feb 28, 12:19 PM EST | Special Weather Statement | RNK | Appomattox, Bedford, Buckingham, Campbell, City of Lynchburg | 41 min |
| Feb 28, 12:34 PM EST | Special Weather Statement | RNK | Carroll, Floyd, Henry, Patrick, City of Galax, City of Martinsville | 41 min |
| Feb 28, 1:11 PM EST | Special Weather Statement | RNK | Franklin | 34 min |
| Feb 28, 1:33 PM EST | Special Weather Statement | RNK | Carroll, Grayson, City of Galax | 27 min |
| Feb 28, 2:05 PM EST | Special Weather Statement | RNK | Carroll, Floyd, Patrick | 40 min |
| Feb 28, 2:36 PM EST | Special Weather Statement | RNK | Henry, Patrick, City of Martinsville | 39 min |
| Feb 28, 2:42 PM EST | Severe Thunderstorm Warning | RNK | Carroll, Patrick | 33 min |
| Feb 28, 4:23 PM EST | Special Weather Statement | RNK | City of Danville | 67 min |
| Feb 28, 6:30 PM EST | Special Weather Statement | RNK | Charlotte, Halifax, Pittsylvania, City of Danville | 60 min |
Nearby
Severe Thunderstorm Warnings in West Virginia, 2011Severe Thunderstorm Warnings in Virginia, 2011Every severe thunderstorm warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.