Alert archive / Virginia / Flash Flood Warnings in 2011
Flash Flood Warning 10, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at Apr 27, 2011, 11:19 PM EDT for Alleghany County, Ashe County, Wilkes County, North Carolina; 8 counties in Virginia. It was in force for 6 hr. 1 report 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
- Apr 27, 2011, 11:19 PM EDT (03:19 UTC)
- Expired
- Apr 28, 2011, 5:15 AM EDT
- In force
- 6 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Flood severity
- None
Counties Alleghany County, NC, Ashe County, NC, Wilkes County, NC, Carroll County, VA, City of Galax, VA, City of Radford, VA, Giles County, VA, Grayson County, VA, Montgomery County, VA, Pulaski County, VA, Wythe County, VA
The radar
The Roanoke radar (KFCX), 40 km from the middle of the area, began a volume at 03:22 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 |
|---|---|---|---|
| Apr 28, 2:00 AM EDT | FLASH FLOOD | 4 E Pearisburg, VA | HEAVY RAIN CAUSED A ROCK SLIDE WHICH BLOCKED THE PULASKI GILES TURNPIKE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Roanoke, VA (KRNK), launched 00:00Z, 3.3 hours before the alert went out and 108 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
- 372 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 1272 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 226 m²/s²
- 0-3 km storm-relative helicity
- 335 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.0
The text
As transmitted, in the capitals the NWS used until 2016.
575
WGUS51 KRNK 280319
FFWRNK
NCC005-009-193-VAC035-071-077-121-155-197-640-750-280915-
/O.NEW.KRNK.FF.W.0010.110428T0319Z-110428T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
1119 PM EDT WED APR 27 2011
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* FLASH FLOOD WARNING FOR...
ALLEGHANY COUNTY IN NORTHWEST NORTH CAROLINA
EAST CENTRAL ASHE COUNTY IN NORTHWEST NORTH CAROLINA
NORTH CENTRAL WILKES COUNTY IN NORTHWEST NORTH CAROLINA
PULASKI COUNTY IN SOUTHWEST VIRGINIA
EASTERN WYTHE COUNTY IN SOUTHWEST VIRGINIA
CITY OF GALAX IN SOUTHWEST VIRGINIA
CITY OF RADFORD IN SOUTHWEST VIRGINIA
EASTERN GRAYSON COUNTY IN SOUTHWEST VIRGINIA
EASTERN GILES COUNTY IN SOUTHWEST VIRGINIA
WESTERN CARROLL COUNTY IN SOUTHWEST VIRGINIA
NORTHWESTERN MONTGOMERY COUNTY IN SOUTHWEST VIRGINIA
* UNTIL 515 AM EDT THURSDAY.
* AT 1113 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED THUNDERSTORMS WITH HEAVY RAINS TRAINING OVER AN AREA
FROM LAUREL SPRINGS NORTH CAROLINA NORTH INTO GILES COUNTY
VIRGINIA. IN ADDITION...SHOWERS AND THUNDERSTORMS WITH HEAVY
RAIN WILL BE HEADING NORTHEAST ACROSS THE SAME AREA THROUGH EARLY
MORNING.THIS WILL LIKELY LEAD TO FLASH FLOODING AND POTENTIAL
MUDSLIDES.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CASCADES...
POPLAR HILL...PEMBROKE...PEARISBURG...NEWPORT...MOUNTAIN LAKE...
KIMBALLTON...EGGLESTON...BANE...PRICES FORK...PARROTT AND MCCOY.
* SOME CREEKS AND STREAMS THAT WILL BE PRONE TO FLOODING INCLUDE
CHESTNUT CREEK IN GALAX....PEAK CREEK NEAR PULASKI...AND SINKING
CREEK NEAR NEWPORT.
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.
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 3715 8087 3715 8085 3715 8086 3741 8067
3734 8044 3733 8045 3731 8043 3732 8042
3732 8039 3639 8104 3639 8142
$$
WP2 follow-up statements
990
WGUS71 KRNK 280653
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
253 AM EDT THU APR 28 2011
NCC005-009-193-VAC035-071-077-121-155-197-640-750-280915-
/O.CON.KRNK.FF.W.0010.000000T0000Z-110428T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ALLEGHANY NC-ASHE NC-WILKES NC-PULASKI VA-WYTHE VA-CITY OF GALAX VA-
CITY OF RADFORD VA-GRAYSON VA-GILES VA-CARROLL VA-MONTGOMERY VA-
253 AM EDT THU APR 28 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 515 AM EDT FOR THE
CITY OF GALAX...THE CITY OF RADFORD...WESTERN MONTGOMERY...
PULASKI...WESTERN CARROLL...EASTERN GILES...EASTERN GRAYSON...
EASTERN WYTHE...NORTHERN WILKES...EASTERN ASHE AND ALLEGHANY
COUNTIES...
AT 241 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
MODERATE TO HEAVY RAIN ACROSS PORTIONS OF THE AREA. IN
ADDITION...SCATTERED THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUED TO
MOVE ACROSS THE WARNED AREA. RAINFALL AMOUNTS OF UP TO 2 INCHES HAVE
OCCURRED...AND THE SCATTERED STORMS MAY BRING AN ADDITIONAL INCH OF
RAIN TO SOME AREAS. THIS WOULD LIKELY CAUSE FLOODING ON SMALLER
CREEKS AND STREAMS.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CASCADES...
POPLAR HILL...PEMBROKE...PEARISBURG...NEWPORT...MOUNTAIN LAKE...
KIMBALLTON...EGGLESTON...BANE...WALTON...PRICES FORK...PARROTT...MC
COY...FAIRLAWN...DUBLIN AND RADFORD
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.
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.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 AM EDT THURSDAY MORNING
FOR NORTHWESTERN NORTH CAROLINA AND SOUTHWESTERN VIRGINIA AND
SOUTHEAST WEST VIRGINIA.
&&
LAT...LON 3715 8087 3715 8085 3715 8086 3741 8067
3734 8044 3733 8045 3731 8043 3732 8042
3732 8039 3639 8104 3639 8142
$$
JJ634
WGUS71 KRNK 280910
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
510 AM EDT THU APR 28 2011
NCC005-009-193-VAC035-071-077-121-155-197-640-750-280916-
/O.EXP.KRNK.FF.W.0010.000000T0000Z-110428T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ALLEGHANY NC-ASHE NC-WILKES NC-PULASKI VA-WYTHE VA-CITY OF GALAX VA-
CITY OF RADFORD VA-GRAYSON VA-GILES VA-CARROLL VA-MONTGOMERY VA-
510 AM EDT THU APR 28 2011
...THE FLASH FLOOD WARNING WILL EXPIRE AT 515 AM EDT FOR THE CITY OF
GALAX...THE CITY OF RADFORD... WESTERN MONTGOMERY...WESTERN
CARROLL...EASTERN GILES...EASTERN GRAYSON...EASTERN WYTHE...NORTHERN
WILKES...EASTERN ASHE AND ALLEGHANY...AND PULASKI COUNTIES...
ALTHOUGH POCKETS OF HEAVIER RAIN MAY CONTINUE DURING THE NEXT
HOUR...IT APPEARS THIS RAINFALL WILL NOT BE ENOUGH TO CAUSE FLASH
FLOODING. THUS THE WARNING WILL BE ALLOWED TO EXPIRE.
LAT...LON 3715 8087 3715 8085 3715 8086 3741 8067
3734 8044 3733 8045 3731 8043 3732 8042
3732 8039 3639 8104 3639 8142
$$
JHThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 8:45 PM EDT | Severe Thunderstorm Warning | RNK | Caswell | 45 min |
| Apr 27, 9:06 PM EDT | Flash Flood Watch | RNK | Alleghany, Ashe, Surry, Watauga, Wilkes | 13 hr |
| Apr 28, 12:01 AM EDT | Tornado Warning | RNK | Ashe | 44 min |
| Apr 28, 3:40 AM EDT | Tornado Warning | RNK | Surry, Wilkes, Yadkin | 34 min |
| Apr 28, 3:47 AM EDT | Tornado Warning | RNK | Surry, Wilkes, Yadkin | 27 min |
| Apr 28, 4:17 AM EDT | Severe Thunderstorm Warning | RNK | Caswell, Rockingham | 30 min |
| Apr 28, 5:32 AM EDT | Flash Flood Warning | RNK | Alleghany | 3 hr |
| Apr 28, 5:51 AM EDT | Severe Thunderstorm Warning | RNK | Stokes, Surry | 54 min |
| Apr 28, 6:24 AM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Surry, Wilkes, Yadkin | 35 min |
| Apr 28, 6:48 AM EDT | Severe Thunderstorm Warning | RNK | Surry | 24 min |
| Apr 28, 7:11 AM EDT | Special Weather Statement | RNK | Stokes | 19 min |
| Apr 27, 8:01 PM EDT | Tornado Warning | RNK | Halifax, Pittsylvania, City of Danville | 44 min |
| Apr 27, 8:09 PM EDT | Severe Thunderstorm Warning | RNK | Appomattox, Buckingham, Campbell | 66 min |
| Apr 27, 8:32 PM EDT | Tornado Warning | RNK | Campbell, Charlotte, Halifax, Pittsylvania | 43 min |
| Apr 27, 9:11 PM EDT | Tornado Warning | RNK | Charlotte, Halifax | 34 min |
| Apr 27, 10:12 PM EDT | Tornado Warning | RNK | Bland, Smyth, Tazewell | 48 min |
| Apr 27, 10:26 PM EDT | Tornado Warning | RNK | Bland, Smyth, Tazewell, Wythe | 49 min |
| Apr 27, 10:39 PM EDT | Flash Flood Warning | RNK | Bland, Smyth, Tazewell | 6 hr |
| Apr 27, 11:09 PM EDT | Tornado Warning | RNK | Bland, Giles, Tazewell | 51 min |
| Apr 27, 11:12 PM EDT | Tornado Warning | RNK | Bland, Grayson, Smyth, Tazewell, Wythe | 48 min |
| Apr 27, 11:53 PM EDT | Tornado Warning | RNK | Bland, Giles, Montgomery, Pulaski, Tazewell, Wythe | 52 min |
| Apr 27, 11:56 PM EDT | Tornado Warning | RNK | Alleghany, City of Covington | 49 min |
| Apr 28, 12:40 AM EDT | Tornado Warning | RNK | Bath | 35 min |
| Apr 28, 12:45 AM EDT | Tornado Warning | RNK | Bland, Giles, Montgomery, Pulaski, Wythe, City of Radford | 45 min |
| Apr 28, 12:48 AM EDT | Flash Flood Warning | RNK | Alleghany, Bath, Craig, Giles, City of Covington | 6 hr |
| Apr 28, 1:03 AM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Bath, Rockbridge, City of Covington | 57 min |
| Apr 28, 1:12 AM EDT | Tornado Warning | RNK | Bland, Smyth, Tazewell, Wythe | 33 min |
| Apr 28, 1:19 AM EDT | Tornado Warning | RNK | Craig, Giles, Montgomery, Roanoke | 26 min |
| Apr 28, 1:20 AM EDT | Tornado Warning | RNK | Bland, Smyth, Tazewell, Wythe | 25 min |
| Apr 28, 1:28 AM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Botetourt, Rockbridge, City of Lexington | 21 min |
| Apr 28, 1:34 AM EDT | Tornado Warning | RNK | Alleghany, Bath, Botetourt, Rockbridge, City of Lexington | 41 min |
| Apr 28, 1:39 AM EDT | Flash Flood Warning | RNK | Bland | 3 hr |
| Apr 28, 1:43 AM EDT | Tornado Warning | RNK | Alleghany, Botetourt, Craig, Montgomery | 19 min |
| Apr 28, 1:47 AM EDT | Tornado Warning | RNK | Bland, Giles, Tazewell, Wythe | 9 min |
| Apr 28, 2:17 AM EDT | Tornado Warning | RNK | Craig, Giles | 28 min |
| Apr 28, 3:22 AM EDT | Flash Flood Warning | RNK | Alleghany, Botetourt, Craig, Franklin, Montgomery, Roanoke and 2 more | 4 hr |
| Apr 28, 6:40 AM EDT | Special Weather Statement | RNK | Amherst, Appomattox, Bedford, Buckingham, Campbell, City of Buena Vista and 1 more | 65 min |
| Apr 28, 6:46 AM EDT | Special Weather Statement | RNK | Patrick | 29 min |
| Apr 28, 6:47 AM EDT | Areal Flood Warning | RNK | Alleghany, Bath, Craig, City of Covington | 6 hr |
| Apr 28, 7:13 AM EDT | Special Weather Statement | RNK | Patrick | 32 min |
| Apr 28, 7:44 AM EDT | Special Weather Statement | RNK | Appomattox, Bedford, Buckingham, City of Lynchburg | 76 min |
| Apr 28, 7:48 AM EDT | Special Weather Statement | RNK | Campbell | 72 min |
| Apr 28, 8:09 AM EDT | Areal Flood Warning | RNK | Alleghany, Botetourt, Craig | 10 hr |
| Apr 28, 8:56 AM EDT | Special Weather Statement | RNK | Appomattox, Buckingham, Campbell, Charlotte, City of Lynchburg | 64 min |
| Apr 28, 10:06 AM EDT | Special Weather Statement | RNK | Halifax | 39 min |
| Apr 28, 12:38 PM EDT | Special Weather Statement | RNK | City of Danville | 52 min |
| Apr 28, 12:44 PM EDT | Areal Flood Warning | RNK | Bath | 6 hr |
| Apr 28, 6:33 PM EDT | Areal Flood Warning | RNK | Alleghany, Botetourt, Craig | 6 hr |
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.