Alert archive / Virginia / Flash Flood Warnings in 2011
Flash Flood Warning 89, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at Nov 29, 2011, 1:18 AM EST for 4 counties in Virginia. It was in force for 6 hr. 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
- Nov 29, 2011, 1:18 AM EST (06:18 UTC)
- Expired
- Nov 29, 2011, 7:15 AM EST
- In force
- 6 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Floyd County, VA, Franklin County, VA, Patrick County, VA, Roanoke County, VA
The radar
The Roanoke radar (KFCX), 19 km from the middle of the area, began a volume at 06:21 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 |
|---|---|---|---|
| Nov 29, 7:00 AM EST | FLASH FLOOD | 1 W Bent Mountain, VA | ONE FT WATER FLOWING OVER ROAD |
| Nov 29, 7:00 AM EST | FLASH FLOOD | 2 Wsw Bent Mountain, VA | ONE FT WATER RUNNING OVER ROAD |
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 00:00Z, 6.3 hours before the alert went out and 91 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
- 27 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 551 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 268 m²/s²
- 0-3 km storm-relative helicity
- 353 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
384
WGUS51 KRNK 290618
FFWRNK
VAC063-067-141-161-291215-
/O.NEW.KRNK.FF.W.0089.111129T0618Z-111129T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
118 AM EST TUE NOV 29 2011
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHERN PATRICK COUNTY IN SOUTHWEST VIRGINIA
SOUTHERN ROANOKE COUNTY IN WEST CENTRAL VIRGINIA
WESTERN FRANKLIN COUNTY IN WEST CENTRAL VIRGINIA
FLOYD COUNTY IN SOUTHWEST VIRGINIA
* UNTIL 715 AM EST.
* AT 113 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM PERSISTENT SHOWERS OVER THE WARNED AREA.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BENT
MOUNTAIN...BOONES MILL...TERRYS FORK...COPPER HILL AND CHECK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 3 INCHES ARE POSSIBLE IN THE
WARNED AREA ESPECIALLY ALONG THE BLUE RIDGE PARKWAY WHERE RAINFALL
RATES WILL BE HIGHER.
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.
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 3672 8047 3681 8055 3710 8021 3711 8018
3720 8016 3720 7987 3682 8000 3678 8003
3679 8006 3678 8010 3673 8009 3672 8010
3673 8024 3685 8012 3683 8034 3675 8039
$$
JH2 follow-up statements
859
WGUS71 KRNK 290749
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
249 AM EST TUE NOV 29 2011
VAC063-067-141-161-291215-
/O.CON.KRNK.FF.W.0089.000000T0000Z-111129T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PATRICK VA-ROANOKE VA-FRANKLIN VA-FLOYD VA-
249 AM EST TUE NOV 29 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 AM EST FOR
NORTHERN PATRICK...SOUTHERN ROANOKE...WESTERN FRANKLIN AND FLOYD
COUNTIES...
AT 243 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE BANDS OF SHOWERS PRODUCING MODERATE RAINFALL ALONG THE BLUE
RIDGE. AUTOMATED RAIN GAGES INDICATED THAT OVER 3 INCHES OF RAIN
HAS FALLEN IN THE AREA FROM COPPER HILL TO BENT MOUNTAIN SINCE LATE
MONDAY EVENING. THIS RAINFALL MAY BE ENOUGH TO PRODUCE FLOODING
ALONG BOTTOM AND MILL CREEK NEAR BENT MOUNTAIN AS WELL AS SMALLER
STREAMS JUST OFF THE PARKWAY.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BENT
MOUNTAIN...FERRUM...ENDICOTT...CALLAWAY...BOONES MILL...FLOYD...
COPPER HILL AND CHECK
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF ANOTHER 1 INCH ARE POSSIBLE IN THE
WARNED AREA.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
PLEASE RELAY ANY REPORTS OF FLOODING INCLUDING MUDSLIDES...OR ROAD
CLOSURES TO THE NATIONAL WEATHER SERVICE IN BLACKSBURG BY CALLING
TOLL FREE...1...8 6 6...2 1 5...4 3 2 4. DELAYED REPORTS ARE WELCOME.
&&
LAT...LON 3672 8047 3681 8055 3710 8021 3711 8018
3720 8016 3720 7987 3682 8000 3678 8003
3679 8006 3678 8010 3673 8009 3672 8010
3673 8024 3685 8012 3683 8034 3675 8039
$$
JH428
WGUS71 KRNK 290926
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
426 AM EST TUE NOV 29 2011
VAC063-067-141-161-291215-
/O.CON.KRNK.FF.W.0089.000000T0000Z-111129T1215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PATRICK VA-ROANOKE VA-FRANKLIN VA-FLOYD VA-
426 AM EST TUE NOV 29 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 715 AM EST FOR
NORTHERN PATRICK...SOUTHERN ROANOKE...WESTERN FRANKLIN AND FLOYD
COUNTIES...
AT 421 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT THE BACK EDGE OF THE HEAVIER RAINFALL WAS MOVING INTO THE
WARNED AREA. THIS SHOULD BRING AN END TO MOST OF THE SIGNIFICANT
RAINFALL AFTER 5 AM. HOWEVER RUNOFF FROM OVER 4 INCHES OF RAIN ALONG
THE BLUE RIDGE SINCE MONDAY EVENING WILL LIKELY CAUSE SMALLER
STREAMS...AND CREEKS FROM AROUND BENT MOUNTAIN TO COPPER HILL TO
REMAIN FLOODED EARLY THIS MORNING.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BENT MOUNTAIN
AND COPPER HILL.
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.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.
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 3672 8047 3681 8055 3710 8021 3711 8018
3720 8016 3720 7987 3682 8000 3678 8003
3679 8006 3678 8010 3673 8009 3672 8010
3673 8024 3685 8012 3683 8034 3675 8039
$$
JHThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 28, 9:10 PM EST | Special Weather Statement | RNK | Smyth, Tazewell | 50 min |
| Nov 28, 9:42 PM EST | Special Weather Statement | RNK | Alleghany, Bath, Bedford, Bland, Botetourt, Craig and 14 more | 63 min |
| Nov 28, 10:12 PM EST | Special Weather Statement | RNK | Smyth, Tazewell | 78 min |
| Nov 28, 10:53 PM EST | Special Weather Statement | RNK | Floyd, Franklin, Montgomery, Pulaski, Roanoke, City of Radford and 2 more | 67 min |
| Nov 28, 11:41 PM EST | Special Weather Statement | RNK | Floyd, Franklin, Henry, Montgomery, Patrick, Roanoke and 4 more | 79 min |
| Nov 29, 12:50 AM EST | Special Weather Statement | RNK | Floyd, Franklin, Henry, Patrick, City of Martinsville, City of Roanoke | 70 min |
| Nov 29, 2:18 AM EST | Special Weather Statement | RNK | Bedford, Botetourt, Campbell, Craig, Franklin, Montgomery and 4 more | 72 min |
| Nov 29, 3:11 AM EST | Special Weather Statement | RNK | Alleghany, Bedford, Botetourt, Campbell, Craig, Pittsylvania and 5 more | 64 min |
| Nov 29, 3:27 AM EST | Areal Flood Warning | RNK | Alleghany, Bath, Botetourt, Craig, Roanoke, City of Covington | 4 hr |
| Nov 29, 4:43 AM EST | Areal Flood Warning | RNK | Montgomery, Roanoke, City of Roanoke, City of Salem | 4 hr |
| Nov 29, 5:16 AM EST | Areal Flood Warning | RNK | Grayson | 4 hr |
| Nov 29, 5:20 AM EST | Special Weather Statement | RNK | Appomattox, Campbell, Charlotte, Halifax, City of Lynchburg | 70 min |
| Nov 29, 5:36 AM EST | Areal Flood Warning | RNK | Amherst, Appomattox, Buckingham, Campbell, Charlotte, Halifax and 4 more | 6 hr |
| Nov 29, 7:12 AM EST | Areal Flood Warning | RNK | Floyd, Franklin, Patrick, Roanoke | 6 hr |
| Nov 29, 7:26 AM EST | Areal Flood Warning | RNK | Alleghany, Bath, Botetourt, Craig, Roanoke, City of Covington | 4 hr |
| Nov 29, 11:00 AM EST | Winter Weather Advisory | RNK | Grayson | 19 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.