Alert archive / Virginia / Flash Flood Warnings in 2011
Flash Flood Warning 21, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at May 13, 2011, 5:30 PM EDT for Grayson County, Wythe County, Virginia; Ashe County, North Carolina. It was in force for 6 hr. 6 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
- May 13, 2011, 5:30 PM EDT (21:30 UTC)
- Expired
- May 13, 2011, 11:30 PM EDT
- In force
- 6 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Ashe County, NC, Grayson County, VA, Wythe County, VA
The radar
The Roanoke radar (KFCX), 109 km from the middle of the area, began a volume at 21:30 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 13, 5:38 PM EDT | FLASH FLOOD | 5 Nw Mouth Of Wilson, VA | ROCK SLIDE CLOSED LITTLE WILSON RD |
| May 13, 6:00 PM EDT | FLASH FLOOD | 1 Se Flatridge, VA | UPPER HEADWATERS OF MIDDLE FOX CREEK FLOODED ROUTE 672. PARTS OF ROAD OVER-WASHED. |
| May 13, 6:00 PM EDT | FLASH FLOOD | 5 S Flatridge, VA | FLOODING THROUGHOUT THE MIDDLE FORK FOX CREEK DRAINAGE SOUTH OF FLAT RIDGE FROM 6PM-7PM. |
| May 13, 6:00 PM EDT | HEAVY RAIN 2.12 | 3 Nne Mouth Of Wilson, VA | 2.12 INCHES OF RAIN IN 45 MINUTES. |
| May 13, 6:30 PM EDT | FLASH FLOOD | 3 S Flatridge, VA | MIDDLE FOX CREEK WASHED OUT HONEY GROVE RD. |
| May 13, 7:00 PM EDT | FLASH FLOOD | 3 Nne Mouth Of Wilson, VA | FLOODING OBSERVED ALONG THE MIDDLE FORK FOX CREEK WHERE IT ENTERS BIG FOX CREEK. BIG FOX CREEK BANK FULL NORTH OF CONFLUENCE...BUT OUT OF ITS BANKS DOWNSTREAM TO THE NEW RIVER. |
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, 9.5 hours before the alert went out and 147 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
- 185 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 606 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
921
WGUS51 KRNK 132130
FFWRNK
NCC009-VAC077-197-140330-
/O.NEW.KRNK.FF.W.0021.110513T2130Z-110514T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
530 PM EDT FRI MAY 13 2011
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHERN ASHE COUNTY IN NORTHWEST NORTH CAROLINA
SOUTH CENTRAL WYTHE COUNTY IN SOUTHWEST VIRGINIA
WESTERN GRAYSON COUNTY IN SOUTHWEST VIRGINIA
* UNTIL 1130 PM EDT.
* AT 525 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A LINE OF SLOW MOVING THUNDERSTORMS THAT
EXTENDED FROM COMERS ROCK TO SHATLEY SPRINGS...OR ALONG A LINE
EXTENDING FROM SPEEDWELL TO LANSING...MOVING EAST AT 15 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WEST
JEFFERSON...MOUNT JEFFERSON...JEFFERSON...VOLNEY...GRASSY CREEK...
MOUTH OF WILSON...ELK CREEK AND BRIDLE CREEK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF
CREEKS AND STREAMS...ROADS AND ROADSIDE CULVERTS. THE HEAVY RAIN
COULD ALSO CAUSE ROCK AND MUDSLIDES.
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 3657 8168 3664 8151 3675 8134 3676 8127
3681 8128 3686 8124 3680 8108 3657 8127
3657 8135 3654 8135 3651 8133 3636 8149
3646 8171
$$
JJ3 follow-up statements
109
WGUS71 KRNK 132205
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
605 PM EDT FRI MAY 13 2011
NCC009-VAC077-197-140330-
/O.CON.KRNK.FF.W.0021.000000T0000Z-110514T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ASHE NC-WYTHE VA-GRAYSON VA-
605 PM EDT FRI MAY 13 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT FOR
WESTERN GRAYSON...SOUTHERN WYTHE AND NORTHERN ASHE COUNTIES...
AT 559 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER THE WARNED
AREA. IN PARTICULAR...RADAR ESTIMATES THAT UP TO 4 INCHES OF RAIN
HAS FALLEN ACROSS PARTS OF CENTRAL GRAYSON COUNTY BETWEEN FLATRIDGE
AND VOLNEY. CREEKS THAT MAY BE FLOODING INCLUDE SHUPE...GUFFEY...
JERRY AND PANTHER. THE VERY HEAVY RAINFALL MAY ALSO PRODUCE MUD AND
ROCK SLIDES ON AREA HIGHWAYS.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SPEEDWELL...
VOLNEY...MOUTH OF WILSON...FLATRIDGE...ELK CREEK...COMERS ROCK AND
BRIDLE CREEK
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT FRIDAY
EVENING FOR NORTHWEST NORTH CAROLINA AND SOUTHWEST VIRGINIA. A SEVERE
THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 1100 PM EDT FRIDAY
EVENING FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA.
&&
LAT...LON 3657 8168 3664 8151 3675 8134 3676 8127
3681 8128 3686 8124 3680 8108 3657 8127
3657 8135 3654 8135 3651 8133 3636 8149
3646 8171
$$
JJ788
WGUS71 KRNK 140137
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
937 PM EDT FRI MAY 13 2011
NCC009-VAC077-197-140330-
/O.CON.KRNK.FF.W.0021.000000T0000Z-110514T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ASHE NC-WYTHE VA-GRAYSON VA-
937 PM EDT FRI MAY 13 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT FOR
WESTERN GRAYSON...SOUTHERN WYTHE AND NORTHERN ASHE COUNTIES...
AT 920 PM EDT...TRAINED WEATHER SPOTTERS REPORTED THAT MIDDLE FOX
CREEK WAS FLOODING IN GRAYSON COUNTY...AND HAD WASHED OUT SOME BACK
ROADS IN THE HEADWATERS EAST OF FLAT RIDGE. THE SPOTTERS REPORT THAT
ROUTE 678...FOX CREEK ROAD WAS LIKELY FLOODED.
THERE HAVE BEEN NO REPORTS OF FLOODING IN SOUTHERN WYTHE OR ASHE
COUNTIES. HOWEVER...RAINFALL WAS HEAVY ENOUGH THAT SMALLER CREEKS OR
STREAMS MAY BE OUT OF THEIR BANKS. WATER SHOULD BE RECEDING IN
SOUTHERN WYTHE AND ASHE COUNTIES.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SPEEDWELL...
FLATRIDGE...ELK CREEK AND COMERS ROCK
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
&&
LAT...LON 3657 8168 3664 8151 3675 8134 3676 8127
3681 8128 3686 8124 3680 8108 3657 8127
3657 8135 3654 8135 3651 8133 3636 8149
3646 8171
$$
JJ367
WGUS71 KRNK 140323
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1123 PM EDT FRI MAY 13 2011
NCC009-VAC077-197-140331-
/O.EXP.KRNK.FF.W.0021.000000T0000Z-110514T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ASHE NC-WYTHE VA-GRAYSON VA-
1123 PM EDT FRI MAY 13 2011
...THE FLASH FLOOD WARNING WILL EXPIRE AT 1130 PM EDT FOR WESTERN
GRAYSON...SOUTHERN WYTHE AND NORTHERN ASHE COUNTIES...
CREEKS AND STREAMS SHOULD BE RECEDING IN THE AREA. THERE IS NO
FURTHER THREAT OF HEAVY RAIN OVERNIGHT...THUS THE FLASH FLOOD
WARNING WILL BE ALLOWED TO EXPIRE.
LAT...LON 3657 8168 3664 8151 3675 8134 3676 8127
3681 8128 3686 8124 3680 8108 3657 8127
3657 8135 3654 8135 3651 8133 3636 8149
3646 8171
$$
JJThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 10:27 AM EDT | Special Weather Statement | RNK | Campbell | 33 min |
| May 13, 11:00 AM EDT | Special Weather Statement | RNK | Charlotte | 45 min |
| May 13, 2:07 PM EDT | Severe Thunderstorm Warning | RNK | Carroll, Grayson, Wythe, City of Galax | 38 min |
| May 13, 2:39 PM EDT | Flash Flood Warning | RNK | Carroll, Grayson, City of Galax | 6 hr |
| May 13, 2:40 PM EDT | Severe Thunderstorm Warning | RNK | Carroll, Grayson, Wythe, City of Galax | 51 min |
| May 13, 2:49 PM EDT | Severe Thunderstorm Warning | RNK | Botetourt, Craig, Roanoke | 56 min |
| May 13, 3:16 PM EDT | Flash Flood Watch | RNK | Alleghany, Bland, Botetourt, Carroll, Craig, Floyd and 13 more | 6 hr |
| May 13, 3:28 PM EDT | Severe Thunderstorm Warning | RNK | Floyd, Franklin, Montgomery, Patrick | 62 min |
| May 13, 3:45 PM EDT | Severe Thunderstorm Warning | RNK | Carroll, Grayson, Patrick | 60 min |
| May 13, 4:15 PM EDT | Severe Thunderstorm Warning | RNK | Montgomery, Roanoke, City of Roanoke, City of Salem | 40 min |
| May 13, 4:25 PM EDT | Severe Thunderstorm Warning | RNK | Smyth, Tazewell | 65 min |
| May 13, 4:40 PM EDT | Severe Thunderstorm Warning | RNK | Patrick | 50 min |
| May 13, 4:50 PM EDT | Special Weather Statement | RNK | Bath | 55 min |
| May 13, 4:52 PM EDT | Special Weather Statement | RNK | Giles | 53 min |
| May 13, 5:10 PM EDT | Flash Flood Warning | RNK | Giles | 4 hr |
| May 13, 5:16 PM EDT | Severe Thunderstorm Warning | RNK | Grayson, Smyth, Wythe | 59 min |
| May 13, 5:46 PM EDT | Severe Thunderstorm Warning | RNK | Bath, Rockbridge | 59 min |
| May 13, 6:19 PM EDT | Flash Flood Warning | RNK | Bland, Tazewell, Wythe | 3 hr |
| May 13, 3:01 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Surry, Wilkes | 59 min |
| May 13, 4:19 PM EDT | Flash Flood Warning | RNK | Surry, Yadkin | 4 hr |
| May 13, 4:45 PM EDT | Severe Thunderstorm Warning | RNK | Ashe, Watauga, Wilkes | 60 min |
| May 13, 5:15 PM EDT | Severe Thunderstorm Warning | RNK | Stokes, Surry, Yadkin | 60 min |
| May 13, 5:35 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Ashe, Watauga, Wilkes | 55 min |
| May 13, 6:30 PM EDT | Severe Thunderstorm Warning | RNK | Stokes, Surry, Yadkin | 37 min |
| May 13, 6:40 PM EDT | Special Weather Statement | RNK | Alleghany | 65 min |
Nearby
Flash Flood Warnings in Virginia, 2011Flash Flood Warnings in North Carolina, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.