Alert archive / Virginia / Flash Flood Warnings in 2011
Flash Flood Warning 69, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at Aug 26, 2011, 12:58 AM EDT for 4 counties in Virginia; Alleghany County, Surry County, Wilkes County, North Carolina. It was in force for 4 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
- Aug 26, 2011, 12:58 AM EDT (04:58 UTC)
- Expired
- Aug 26, 2011, 4:59 AM EDT
- In force
- 4 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, Patrick County, VA
The radar
The Roanoke radar (KFCX), 80 km from the middle of the area, began a volume at 04:57 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, 5.0 hours before the alert went out and 117 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
- 452 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 1677 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
620
WGUS51 KRNK 260458
FFWRNK
NCC005-171-193-VAC035-077-141-640-261100-
/O.NEW.KRNK.FF.W.0069.110826T0458Z-110826T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
1258 AM EDT FRI AUG 26 2011
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* FLASH FLOOD WARNING FOR...
ALLEGHANY COUNTY IN NORTHWEST NORTH CAROLINA
NORTHERN SURRY COUNTY IN NORTH CENTRAL NORTH CAROLINA
NORTH CENTRAL WILKES COUNTY IN NORTHWEST NORTH CAROLINA
SOUTHWESTERN PATRICK COUNTY IN SOUTHWEST VIRGINIA
CITY OF GALAX IN SOUTHWEST VIRGINIA
EASTERN GRAYSON COUNTY IN SOUTHWEST VIRGINIA
SOUTHERN CARROLL COUNTY IN SOUTHWEST VIRGINIA
* UNTIL 700 AM EDT.
* AT 1253 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 GROUNDHOG
MOUNTAIN...WOODLAWN...PIPERS GAP...LAUREL FORK...GLADESBORO...FANCY
GAP...ARARAT...SPRING VALLEY...INDEPENDENCE...FRIES...ELK CREEK...
BAYWOOD AND GALAX CITY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF ONE TO THREE INCHES ARE POSSIBLE IN
THE WARNED AREA.
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.
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 3640 8125 3676 8124 3676 8119 3677 8116
3677 8108 3675 8050 3636 8046
$$
KK2 follow-up statements
130
WGUS71 KRNK 260603
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
203 AM EDT FRI AUG 26 2011
NCC005-171-193-VAC035-077-141-640-261100-
/O.CON.KRNK.FF.W.0069.000000T0000Z-110826T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ALLEGHANY NC-SURRY NC-WILKES NC-PATRICK VA-CITY OF GALAX VA-
GRAYSON VA-CARROLL VA-
203 AM EDT FRI AUG 26 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 AM EDT FOR THE
CITY OF GALAX... ALLEGHANY...NORTHERN SURRY...NORTHERN WILKES...
SOUTHWESTERN PATRICK...EASTERN GRAYSON AND SOUTHERN CARROLL
COUNTIES...
AT 158 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING VERY HEAVY RAIN OVER THE WARNED
AREA.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WOODLAWN...
LAUREL FORK...GLADESBORO...FANCY GAP...SPRING VALLEY...FRIES...ELK
CREEK AND GALAX CITY
CREEKS AFFECTED MAY INCLUDE PAULS CREEK...EAST FORK CROOKED
CREEK...AND LITTLE PAULS CREEK. WATCH FOR FLOODING PROBLEMS ALONG
RAMEY CREEK AND LOVILLS CREEK. FLOODING PROBLEMS ARE ALSO POSSIBLE
ALONG STATE ROUTE 700 SOUTH OF INDEPENDENCE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
&&
LAT...LON 3640 8125 3676 8124 3676 8119 3677 8116
3677 8108 3675 8050 3636 8046
$$
KK643
WGUS71 KRNK 260859
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
459 AM EDT FRI AUG 26 2011
NCC005-171-193-VAC035-077-141-640-260908-
/O.CAN.KRNK.FF.W.0069.000000T0000Z-110826T1100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ALLEGHANY NC-SURRY NC-WILKES NC-PATRICK VA-CITY OF GALAX VA-
GRAYSON VA-CARROLL VA-
459 AM EDT FRI AUG 26 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR THE CITY OF
GALAX... ALLEGHANY...NORTHERN SURRY...NORTHERN WILKES...SOUTHWESTERN
PATRICK...EASTERN GRAYSON AND SOUTHERN CARROLL COUNTIES...
FLOODING HAS ENDED OVER THE WARNED AREA...THUS THE FLASH FLOOD
WARNING HAS BEEN CANCELLED. A FEW ADDITIONAL LIGHT SHOWERS MAY OCCUR
EARLY THIS MORNING BUT ARE NOT EXPECTED TO BE ENOUGH TO CAUSE
FLOODING.
LAT...LON 3640 8125 3676 8124 3676 8119 3677 8116
3677 8108 3675 8050 3636 8046
$$
JHThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 8:23 PM EDT | Severe Thunderstorm Warning | RNK | Carroll, Grayson | 39 min |
| Aug 25, 8:35 PM EDT | Areal Flood Advisory | RNK | Carroll | 3 hr |
| Aug 25, 8:37 PM EDT | Special Weather Statement | RNK | Appomattox, Campbell | 38 min |
| Aug 25, 8:46 PM EDT | Special Weather Statement | RNK | City of Martinsville | 44 min |
| Aug 25, 8:58 PM EDT | Special Weather Statement | RNK | Campbell | 47 min |
| Aug 25, 9:11 PM EDT | Special Weather Statement | RNK | Henry | 49 min |
| Aug 25, 10:19 PM EDT | Special Weather Statement | RNK | Halifax | 41 min |
| Aug 25, 10:47 PM EDT | Special Weather Statement | RNK | Carroll, City of Galax | 58 min |
| Aug 26, 12:18 AM EDT | Areal Flood Advisory | RNK | Carroll, Grayson, Patrick, City of Galax | 6 hr |
| Aug 25, 10:50 PM EDT | Special Weather Statement | RNK | Caswell | 55 min |
| Aug 25, 11:24 PM EDT | Special Weather Statement | RNK | Surry, Yadkin | 66 min |
| Aug 26, 7:50 PM EDT | Special Weather Statement | RNK | Ashe | 55 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.