Alert archive / North Carolina / Flash Flood Warnings in 2011
Flash Flood Warning 71, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at Sep 2, 2011, 5:16 PM EDT for Surry County, North Carolina. It was in force for 4 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
- Sep 2, 2011, 5:16 PM EDT (21:16 UTC)
- Expired
- Sep 2, 2011, 9:10 PM EDT
- In force
- 4 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Flood severity
- None
County Surry County, NC
The radar
The Roanoke radar (KFCX), 75 km from the middle of the area, began a volume at 21:19 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 |
|---|---|---|---|
| Sep 2, 5:30 PM EDT | FLASH FLOOD | 3 Ene Level Cross, NC | SEVERAL INCHES OF WATER ON ROAD. ROAD NOT VISIBLE BY DRIVERS. |
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, 9.3 hours before the alert went out and 67 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
- 377 J/kg
- Mixed-layer CIN
- -136 J/kg
- Mixed-layer LCL
- 1087 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 182 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
208
WGUS51 KRNK 022116
FFWRNK
NCC171-030315-
/O.NEW.KRNK.FF.W.0071.110902T2116Z-110903T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
516 PM EDT FRI SEP 2 2011
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EAST CENTRAL SURRY COUNTY IN NORTH CENTRAL NORTH CAROLINA
* UNTIL 1115 PM EDT.
* AT 507 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN ABOUT TO ENTER THE AREA FROM THE NORTH IN
ASSOCIATION WITH A LINE OF SHOWERS AND STORMS. THIS ADDITIONAL
AMOUNT OF RAIN MAY PROMPT FLASH FLOODING OF THE ROOT RIVER OR ITS
TRIBUTARIES INCLUDING TOMS CREEK...PILOT CREEK AND BULL CREEK.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PILOT
MOUNTAIN AND ARARAT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT TRY TO CROSS WATER THAT IS FLOWING ACROSS A ROAD. TURN
AROUND...DONT DROWN.
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 3635 8062 3641 8063 3648 8050 3642 8046
3635 8046 3631 8053
$$
DS2 follow-up statements
207
WGUS71 KRNK 022213
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
613 PM EDT FRI SEP 2 2011
NCC171-030315-
/O.CON.KRNK.FF.W.0071.000000T0000Z-110903T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SURRY NC-
613 PM EDT FRI SEP 2 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM EDT FOR
EASTERN SURRY COUNTY...
AT 611 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
HEAVY RAIN PRODUCING SHOWERS AND STORMS HAVE MOVED SOUTH OF THE
WARNED AREA. CONCERN CONTINUES THOUGH FOR RUN OFF FROM THE EARLIER
RAIN TO PROMPT FLASH FLOODING. AREAS OF GREATEST CONCERN ARE THOSE
ON AND NEAR THE ROOT RIVER...TOMS CREEK...PILOT CREEK AND BULL CREEK.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ARARAT
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
&&
LAT...LON 3635 8062 3641 8063 3648 8050 3642 8046
3635 8046 3631 8053
$$
DS446
WGUS71 KRNK 030110
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
910 PM EDT FRI SEP 2 2011
NCC171-030119-
/O.CAN.KRNK.FF.W.0071.000000T0000Z-110903T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SURRY NC-
910 PM EDT FRI SEP 2 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EASTERN SURRY
COUNTY...
NO REPORTS OF FLASH FLOODING HAVE BEEN RECEIVED FROM THE WARNED
AREA...AND NO ADDITIONAL HEAVY RAIN IS EXPECTED. THEREFORE...THE
FLASH FLOOD WARNING HAS BEEN CANCELLED.
LAT...LON 3635 8062 3641 8063 3648 8050 3642 8046
3635 8046 3631 8053
$$
DSThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 3:11 PM EDT | Severe Thunderstorm Warning | RNK | Stokes, Surry, Yadkin | 64 min |
| Sep 2, 3:35 PM EDT | Special Weather Statement | RNK | Surry | 55 min |
| Sep 2, 3:39 PM EDT | Severe Thunderstorm Warning | RNK | Rockingham, Stokes | 66 min |
| Sep 2, 3:41 PM EDT | Severe Thunderstorm Warning | RNK | Stokes, Surry | 49 min |
| Sep 2, 4:14 PM EDT | Severe Thunderstorm Warning | RNK | Stokes, Surry, Yadkin | 61 min |
| Sep 2, 4:24 PM EDT | Severe Thunderstorm Warning | RNK | Stokes, Surry | 51 min |
| Sep 2, 4:33 PM EDT | Severe Thunderstorm Warning | RNK | Rockingham, Stokes | 57 min |
| Sep 2, 4:46 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Stokes, Surry, Wilkes | 59 min |
| Sep 2, 5:16 PM EDT | Severe Thunderstorm Warning | RNK | Rockingham, Stokes, Surry | 44 min |
| Sep 2, 5:19 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Surry, Wilkes, Yadkin | 71 min |
| Sep 2, 5:50 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Surry | 55 min |
| Sep 2, 6:41 PM EDT | Severe Thunderstorm Warning | RNK | Alleghany, Ashe, Wilkes | 64 min |
| Sep 2, 7:15 PM EDT | Severe Thunderstorm Warning | RNK | Ashe, Watauga, Wilkes | 75 min |
| Sep 2, 7:44 PM EDT | Special Weather Statement | RNK | Ashe | 61 min |
Nearby
Flash 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.