Alert archive / Virginia / Flash Flood Warnings in 2011
Flash Flood Warning 81, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at Sep 6, 2011, 12:17 AM EDT for Carroll County, Grayson County, City of Galax, Virginia; Alleghany County, Surry County, Wilkes County, North Carolina. 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, 12:17 AM EDT (04:17 UTC)
- Expired
- Sep 6, 2011, 6:15 AM EDT
- In force
- 6 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Alleghany County, NC, Surry County, NC, Wilkes County, NC, Carroll County, VA, City of Galax, VA, Grayson County, VA
The radar
The Roanoke radar (KFCX), 81 km from the middle of the area, began a volume at 04:20 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
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 4.3 hours before the alert went out and 115 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
- 1522 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 698 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 209 m²/s²
- 0-3 km storm-relative helicity
- 245 m²/s²
- Significant tornado parameter
- 2.1
- Supercell composite
- 9.5
The text
As transmitted, in the capitals the NWS used until 2016.
643
WGUS51 KRNK 060417
FFWRNK
NCC005-171-193-VAC035-077-640-061015-
/O.NEW.KRNK.FF.W.0081.110906T0417Z-110906T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
1217 AM EDT TUE SEP 6 2011
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* FLASH FLOOD WARNING FOR...
ALLEGHANY COUNTY IN NORTHWEST NORTH CAROLINA
NORTHWESTERN SURRY COUNTY IN NORTH CENTRAL NORTH CAROLINA
NORTH CENTRAL WILKES COUNTY IN NORTHWEST NORTH CAROLINA
CITY OF GALAX IN SOUTHWEST VIRGINIA
EASTERN GRAYSON COUNTY IN SOUTHWEST VIRGINIA
CARROLL COUNTY IN SOUTHWEST VIRGINIA
* UNTIL 615 AM EDT.
* AT 1211 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A THUNDERSTORM OVER THE WARNED AREA.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WOODLAWN...
SYLVATUS...HILLSVILLE...GLADESBORO...GALAX HILLSVILLE AIRPORT...
FRIES AND GALAX CITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP 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 3644 8127 3648 8132 3685 8084 3689 8071
3676 8059 3635 8110
$$
162 follow-up statements
687
WGUS71 KRNK 060619
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
219 AM EDT TUE SEP 6 2011
NCC005-171-193-VAC035-077-640-061015-
/O.CON.KRNK.FF.W.0081.000000T0000Z-110906T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ALLEGHANY NC-SURRY NC-WILKES NC-CITY OF GALAX VA-GRAYSON VA-
CARROLL VA-
219 AM EDT TUE SEP 6 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 AM EDT FOR THE
CITY OF GALAX... ALLEGHANY...NORTHWESTERN SURRY...NORTHERN WILKES...
EASTERN GRAYSON AND CARROLL COUNTIES...
AT 211 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE BANDS OF MODERATE TO HEAVY RAIN MOVING OVER THE WARNED AREA.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WOODLAWN...
SYLVATUS...PIPERS GAP...HILLSVILLE...GLADESBORO...GALAX HILLSVILLE
AIRPORT...FRIES AND GALAX CITY
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE IN THE
WARNED AREA. THIS WILL BE IN ADDITION TO THE FOUR TO SIX INCHES OF
RAIN WHICH FELL EARLIER THIS EVENING.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 AM EDT TUESDAY MORNING
FOR SOUTHWESTERN VIRGINIA.
&&
LAT...LON 3644 8127 3648 8132 3685 8084 3689 8071
3676 8059 3635 8110
$$
16688
WGUS71 KRNK 061012
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
612 AM EDT TUE SEP 6 2011
NCC005-171-193-VAC035-077-640-061020-
/O.EXP.KRNK.FF.W.0081.000000T0000Z-110906T1015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ALLEGHANY NC-SURRY NC-WILKES NC-CITY OF GALAX VA-GRAYSON VA-
CARROLL VA-
612 AM EDT TUE SEP 6 2011
...THE FLASH FLOOD WARNING WILL EXPIRE AT 615 AM EDT FOR THE CITY OF
GALAX... ALLEGHANY...NORTHWESTERN SURRY...NORTHERN WILKES...EASTERN
GRAYSON AND CARROLL COUNTIES...
FLASH FLOODING IS NOT EXPECTED AS HEAVIER RAINS HAVE ABATED.
HOWEVER...ACCORDING TO LOCAL LAW ENFORCEMENT THERE ARE A FEW LOW
WATER BRIDGES STILL CLOSED IN ALLEGHANY COUNTY NORTH CAROLINA.
IF TRAVELING THIS MORNING BE ALERT TO PONDING OF WATER ON THE ROADS.
LAT...LON 3644 8127 3648 8132 3685 8084 3689 8071
3676 8059 3635 8110
$$
WPThe 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, 12:51 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, 7:43 AM EDT | Flash Flood Warning | RNK | Floyd, Franklin, Roanoke | 6 hr |
| 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 |
| Sep 5, 8:44 PM EDT | Flash Flood Warning | RNK | Watauga, Wilkes | 6 hr |
| Sep 5, 9:01 PM EDT | Special Weather Statement | RNK | Surry | 29 min |
| Sep 5, 9:13 PM EDT | Severe Thunderstorm Warning | RNK | Wilkes | 47 min |
| Sep 5, 9:20 PM EDT | Special Weather Statement | RNK | Rockingham, Stokes, Surry, Yadkin | 55 min |
| Sep 6, 6:58 AM EDT | Areal Flood Warning | RNK | Ashe, Watauga | 3 hr |
| Sep 6, 9:27 AM EDT | Flash Flood Warning | RNK | Ashe, Watauga, Wilkes | 5 hr |
| Sep 6, 11:38 AM EDT | Special Weather Statement | RNK | Surry | 37 min |
| Sep 6, 1:10 PM EDT | Tornado Warning | RNK | Caswell | 35 min |
| Sep 6, 3:07 PM EDT | Special Weather Statement | RNK | Rockingham | 23 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.