Alert archive / Virginia / Flash Flood Warnings in 2011
Flash Flood Warning 82, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at Sep 6, 2011, 7:43 AM EDT for Floyd County, Franklin County, Roanoke County, Virginia. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 6, 2011, 7:43 AM EDT (11:43 UTC)
- Expired
- Sep 6, 2011, 1:30 PM EDT
- In force
- 6 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Floyd County, VA, Franklin County, VA, Roanoke County, VA
The radar
The Roanoke radar (KFCX), 26 km from the middle of the area, began a volume at 11:44 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 nearest sounding before it
Roanoke, VA (KRNK), launched 00:00Z, 11.7 hours before the alert went out and 59 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
- 272 J/kg
- Mixed-layer CIN
- -18 J/kg
- Mixed-layer LCL
- 634 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
020
WGUS51 KRNK 061143
FFWRNK
VAC063-067-161-061730-
/O.NEW.KRNK.FF.W.0082.110906T1143Z-110906T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
743 AM EDT TUE SEP 6 2011
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN ROANOKE COUNTY IN WEST CENTRAL VIRGINIA
WESTERN FRANKLIN COUNTY IN WEST CENTRAL VIRGINIA
NORTHEASTERN FLOYD COUNTY IN SOUTHWEST VIRGINIA
* UNTIL 130 PM EDT.
* AT 730 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A LINE OF STORMS OVER THE WARNED AREA. STORMS
ARE ORIENTED SOUTH TO NORTH FROM PHILPOTT
DAM...FERRUM...CALLAWAY...AND CAVE SPRING. THESE STORMS WILL TRAIN
OVER THE SAME AREA AND OVER SATURATED GROUND.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BENT
MOUNTAIN...WIRTZ...ROCKY MOUNT...FERRUM...CALLAWAY...BOONES MILL
AND COPPER HILL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS UP TO AN INCH...HIGHER AMOUNTS ON
EASTERN SLOPES OF THE BLUE RIDGE...ARE POSSIBLE IN THE WARNED AREA.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
PLEASE RELAY ANY REPORTS OF FLOODING INCLUDING MUDSLIDES...OR ROAD
CLOSURES TO THE NATIONAL WEATHER SERVICE IN BLACKSBURG BY CALLING
TOLL FREE...1...8 6 6...2 1 5...4 3 2 4. DELAYED REPORTS ARE WELCOME.
&&
LAT...LON 3683 8008 3685 8007 3685 8013 3704 8017
3717 8013 3722 7985 3681 7987 3683 8000
3680 8001 3679 8002 3679 8001 3678 8003
$$
RCS3 follow-up statements
684
WGUS71 KRNK 061345
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
945 AM EDT TUE SEP 6 2011
VAC063-067-161-061730-
/O.CON.KRNK.FF.W.0082.000000T0000Z-110906T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ROANOKE VA-FRANKLIN VA-FLOYD VA-
945 AM EDT TUE SEP 6 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 PM EDT FOR
SOUTHEASTERN ROANOKE...WESTERN FRANKLIN AND NORTHEASTERN FLOYD
COUNTIES...
AT 935 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR IS DISPLAYING
LIGHT RAIN OVER THE WARNED AREA. HOWEVER...HEAVIER RAIN WILL MOVE
BACK OVER THE WARNED AREA BETWEEN 1000 AM AND NOON TODAY.
IN THE LAST 24 HOURS...3 TO 5 INCHES OF RAIN HAS
FALLEN ACROSS THE AREA. WITH THE GROUND BEING SATURATED AND
ADDITIONAL RAINFALL EXPECTED...FLASH FLOODING IS HIGHLY LIKELY. A
FLOOD WARNING FOR CREEKS AND STREAMS IS ALSO IN EFFECT INTO TONIGHT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF AROUND AN INCH OR MORE ARE POSSIBLE
IN THE WARNED AREA. HIGHER AMOUNTS OF 2 TO 3 INCHES ARE ALSO
POSSIBLE ALONG EASTERN SLOPES OF THE BLUE RIDGE.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 PM EDT TUESDAY AFTERNOON
FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA.
&&
LAT...LON 3683 8008 3685 8007 3685 8013 3704 8017
3717 8013 3722 7985 3681 7987 3683 8000
3680 8001 3679 8002 3679 8001 3678 8003
$$
RCS957
WGUS71 KRNK 061459
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1059 AM EDT TUE SEP 6 2011
VAC063-067-161-061730-
/O.CON.KRNK.FF.W.0082.000000T0000Z-110906T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ROANOKE VA-FRANKLIN VA-FLOYD VA-
1059 AM EDT TUE SEP 6 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 130 PM EDT FOR
SOUTHEASTERN ROANOKE...WESTERN FRANKLIN AND NORTHEASTERN FLOYD
COUNTIES...
AT 1049 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE VERY HEAVY RAIN OVER THE WARNED AREA. BANDS OF HEAVIER RAIN
WILL CONTINUE OVER THE WARNED AREA THROUGH NOON TODAY. ONCE THE
HEAVY RAIN EXITS THE WARNED AREA...RUNOFF WILL KEEP THE THREAT OF
FLASH FLOODING IN THE AREA INTO EARLY AFTERNOON. AREAL FLOODING OF
CREEKS AND STREAMS WILL REMAIN HIGH THROUGH THIS EVENING.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BENT
MOUNTAIN...WIRTZ...ROCKY MOUNT...FERRUM...CALLAWAY...BOONES MILL AND
COPPER HILL
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
&&
LAT...LON 3683 8008 3685 8007 3685 8013 3704 8017
3717 8013 3722 7985 3681 7987 3683 8000
3680 8001 3679 8002 3679 8001 3678 8003
$$
RCS531
WGUS71 KRNK 061730
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
130 PM EDT TUE SEP 6 2011
VAC063-067-161-061738-
/O.EXP.KRNK.FF.W.0082.000000T0000Z-110906T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ROANOKE VA-FRANKLIN VA-FLOYD VA-
130 PM EDT TUE SEP 6 2011
...THE FLASH FLOOD WARNING WILL EXPIRE AT 130 PM EDT FOR SOUTHEASTERN
ROANOKE...WESTERN FRANKLIN AND NORTHEASTERN FLOYD COUNTIES...
AREAL FLOOD WARNING REMAINS IN EFFECT INTO THIS EVENING. CREEKS AND
STREAMS WILL REMAIN HIGH FOR THE NEXT 24 HOURS.
LAT...LON 3683 8008 3685 8007 3685 8013 3704 8017
3717 8013 3722 7985 3681 7987 3683 8000
3680 8001 3679 8002 3679 8001 3678 8003
$$
RCSThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 8:12 PM EDT | Tornado Warning | RNK | Craig, Giles, Montgomery, Roanoke | 33 min |
| Sep 5, 8:17 PM EDT | Special Weather Statement | RNK | Amherst, Bedford, Franklin, City of Lynchburg | 28 min |
| Sep 5, 8:36 PM EDT | Tornado Warning | RNK | Bedford | 39 min |
| Sep 5, 9:24 PM EDT | Special Weather Statement | RNK | Amherst, City of Lynchburg | 36 min |
| Sep 5, 9:40 PM EDT | Severe Thunderstorm Warning | RNK | Carroll, Patrick | 45 min |
| Sep 5, 10:00 PM EDT | Special Weather Statement | RNK | Appomattox, Buckingham, City of Lynchburg | 60 min |
| Sep 5, 10:03 PM EDT | Tornado Warning | RNK | Carroll, Patrick | 27 min |
| Sep 5, 10:09 PM EDT | Flash Flood Warning | RNK | Floyd, Franklin, Roanoke | 6 hr |
| Sep 5, 10:19 PM EDT | Flash Flood Warning | RNK | Carroll, Floyd, Patrick | 6 hr |
| Sep 5, 10:23 PM EDT | Special Weather Statement | RNK | Campbell, City of Lynchburg | 67 min |
| Sep 5, 10:50 PM EDT | Severe Thunderstorm Warning | RNK | Buckingham | 25 min |
| Sep 5, 10:52 PM EDT | Flash Flood Warning | RNK | Bedford, Campbell, Franklin, City of Lynchburg | 6 hr |
| Sep 5, 11:04 PM EDT | Flash Flood Warning | RNK | Carroll, Floyd, Franklin, Patrick | 6 hr |
| Sep 5, 11:22 PM EDT | Flash Flood Warning | RNK | Amherst | 6 hr |
| Sep 5, 11:43 PM EDT | Special Weather Statement | RNK | Amherst, Bedford, Buckingham, City of Lynchburg | 62 min |
| Sep 6, 12:17 AM EDT | Flash Flood Warning | RNK | Carroll, Grayson, City of Galax | 6 hr |
| Sep 6, 12:51 AM EDT | Special Weather Statement | RNK | Appomattox, Buckingham | 54 min |
| Sep 6, 1:10 AM EDT | Severe Thunderstorm Warning | RNK | Appomattox, Buckingham | 65 min |
| Sep 6, 3:30 AM EDT | Areal Flood Warning | RNK | Alleghany, Amherst, Bath, Bedford, Botetourt, Craig and 7 more | 18 hr |
| Sep 6, 3:38 AM EDT | Areal Flood Warning | RNK | Carroll, Floyd, Franklin, Giles, Grayson, Montgomery and 5 more | 18 hr |
| Sep 6, 3:39 AM EDT | Special Weather Statement | RNK | Appomattox, Bedford, Campbell, Franklin, Pittsylvania, City of Lynchburg | 66 min |
| Sep 6, 4:34 AM EDT | Special Weather Statement | RNK | Halifax | 56 min |
| Sep 6, 4:51 AM EDT | Severe Thunderstorm Warning | RNK | Charlotte, Halifax | 54 min |
| Sep 6, 5:04 AM EDT | Tornado Warning | RNK | Charlotte, Halifax | 26 min |
| Sep 6, 5:28 AM EDT | Tornado Warning | RNK | Charlotte, Halifax | 47 min |
| Sep 6, 8:28 AM EDT | Tornado Warning | RNK | Carroll, Patrick | 19 min |
| Sep 6, 9:48 AM EDT | Tornado Warning | RNK | Patrick | 27 min |
| Sep 6, 9:57 AM EDT | Areal Flood Warning | RNK | Carroll, Grayson, Patrick | 12 hr |
Nearby
Flash Flood Warnings in Virginia, 2011Every flash flood 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.