Alert archive / North Carolina / Flash Flood Warnings in 2011
Flash Flood Warning 23, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at May 14, 2011, 5:29 PM EDT for Watauga County, North Carolina. It was in force for 3 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
- May 14, 2011, 5:29 PM EDT (21:29 UTC)
- Expired
- May 14, 2011, 8:02 PM EDT
- In force
- 3 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Storm-based polygon
- Flood severity
- None
County Watauga County, NC
The radar
The Roanoke radar (KFCX), 150 km from the middle of the area, began a volume at 21:32 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 12:00Z, 9.5 hours before the alert went out and 156 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
- 473 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 735 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
583
WGUS51 KRNK 142129
FFWRNK
NCC189-150330-
/O.NEW.KRNK.FF.W.0023.110514T2129Z-110515T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
529 PM EDT SAT MAY 14 2011
THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A
* FLASH FLOOD WARNING FOR...
WATAUGA COUNTY IN NORTHWEST NORTH CAROLINA
* UNTIL 1130 PM EDT.
* AT 525 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM A CLUSTER OF THUNDERSTORMS OVER THE WARNED
AREA.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TODD...
BLOWING ROCK...SANDS...RUTHERWOOD...AHO...LOVILL...DEEP GAP AND
BOONE.
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.
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.
EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF
CREEKS AND STREAMS...ROADS AND ROADSIDE CULVERTS. THE HEAVY RAIN
COULD ALSO CAUSE ROCK AND MUDSLIDES.
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 8165 3628 8156 3624 8148 3620 8146
3612 8154 3611 8181 3617 8184
$$
JJ2 follow-up statements
426
WGUS71 KRNK 142218
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
618 PM EDT SAT MAY 14 2011
NCC189-150330-
/O.CON.KRNK.FF.W.0023.000000T0000Z-110515T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WATAUGA NC-
618 PM EDT SAT MAY 14 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1130 PM EDT FOR
WATAUGA COUNTY...
AT 606 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT HEAVY RAIN IS MOVING SLOWLY EASTWARD AND OUT OF WATAUGA
COUNTY. RADAR AND RAIN GAGE ESTIMATES THAT UP 1.5 INCHES OF RAIN HAS
FALLEN IN AN HOUR. THIS MAY CAUSE SOME SMALL STREAMS TO COME OUT OD
THEIR BANKS...AND FLOOD LOW LYING AREAS. THERE IS ALSO A POTENTIAL
FOR MORE HEAVY RAIN TO MOVE INTO THE AREA THROUGH 730 PM.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BLOWING
ROCK...BOONE...RUTHERWOOD...AHO...AND DEEP GAP.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
&&
LAT...LON 3635 8165 3628 8156 3624 8148 3620 8146
3612 8154 3611 8181 3617 8184
$$
JJ074
WGUS71 KRNK 150002
FFSRNK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
802 PM EDT SAT MAY 14 2011
NCC189-150011-
/O.CAN.KRNK.FF.W.0023.000000T0000Z-110515T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WATAUGA NC-
802 PM EDT SAT MAY 14 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR WATAUGA COUNTY...
HEAVY RAIN HAS MOVED OUT OF THE AREA. THERE HAVE BEEN NO REPORTS OF
FLOODING. NO ADDITIONAL HEAVY RAIN IS EXPECTED THIS EVENING...THUS
THE FLASH FLOOD WARNING HAS BEEN CANCELLED.
LAT...LON 3635 8165 3628 8156 3624 8148 3620 8146
3612 8154 3611 8181 3617 8184
$$
JJThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 14, 1:28 PM EDT | Special Weather Statement | RNK | Rockingham, Stokes | 62 min |
| May 14, 6:11 PM EDT | Special Weather Statement | RNK | Alleghany, Ashe | 79 min |
| May 14, 6:49 PM EDT | Flash Flood Watch | RNK | Alleghany, Stokes, Surry, Wilkes, Yadkin | 5 hr |
| May 14, 7:00 PM EDT | Flash Flood Warning | RNK | Alleghany, Ashe, Surry, Wilkes | 4 hr |
| May 14, 7:16 PM EDT | Special Weather Statement | RNK | Stokes, Surry, Yadkin | 59 min |
| May 14, 7:54 PM EDT | Flash Flood Warning | RNK | Stokes, Surry | 3 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.