Alert archive / North Carolina / Flash Flood Warnings in 2011

Flash Flood Warning 32, NWS Blacksburg, VA

May 23, 2011Ashe County, Watauga County, Wilkes County, North Carolina

NWS Blacksburg, VA issued this flash flood warning at May 23, 2011, 3:45 PM EDT for Ashe County, Watauga 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: May 23, 2011, 3:45 PM EDT (19:45 UTC)
Expired: May 23, 2011, 7:28 PM EDT
In force: 4 hr
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Flood severity: None

Counties Ashe County, NC, Watauga County, NC, Wilkes County, NC

The radar

The Roanoke radar (KFCX), 132 km from the middle of the area, began a volume at 19:49 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, 7.8 hours before the alert went out and 130 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 187 J/kg
Mixed-layer CIN: -191 J/kg
Mixed-layer LCL: 717 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 238 m²/s²
0-3 km storm-relative helicity: 253 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

080 
WGUS51 KRNK 231945
FFWRNK
NCC009-189-193-240145-
/O.NEW.KRNK.FF.W.0032.110523T1945Z-110524T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
345 PM EDT MON MAY 23 2011

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL ASHE COUNTY IN NORTHWEST NORTH CAROLINA
  EASTERN WATAUGA COUNTY IN NORTHWEST NORTH CAROLINA
  CENTRAL WILKES COUNTY IN NORTHWEST NORTH CAROLINA

* UNTIL 945 PM EDT.

* AT 340 PM 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 WILKES
  COUNTY AIRPORT...ROARING RIVER...CASCADE FALLS...IDLEWILD...
  FLEETWOOD...WILBAR...SUMMIT...RONDA...MC GRADY...HAYS...HALLS
  MILLS...DOCKERY...MULBERRY...TODD...RUTHERWOOD AND DEEP GAP.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

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 3611 8162 3633 8162 3634 8093 3611 8093

$$

16

1 follow-up statement

870 
WGUS71 KRNK 232328
FFSRNK

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
728 PM EDT MON MAY 23 2011

NCC009-189-193-232339-
/O.CAN.KRNK.FF.W.0032.000000T0000Z-110524T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ASHE NC-WATAUGA NC-WILKES NC-
728 PM EDT MON MAY 23 2011

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR CENTRAL WILKES...
EASTERN WATAUGA AND SOUTHERN ASHE COUNTIES...

FLOODING HAS ENDED OVER THE WARNED AREA...THUS THE FLASH FLOOD
WARNING HAS BEEN CANCELLED.

LAT...LON 3611 8162 3633 8162 3634 8093 3611 8093

$$

16

The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 22, 8:02 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Ashe	58 min
May 22, 8:17 PM EDT	Flash Flood Warning	RNK	Ashe, Watauga, Wilkes	4 hr
May 22, 8:33 PM EDT	Flash Flood Warning	RNK	Ashe	4 hr
May 22, 9:50 PM EDT	Special Weather Statement	RNK	Yadkin	55 min
May 22, 10:39 PM EDT	Special Weather Statement	RNK	Rockingham	36 min
May 22, 11:19 PM EDT	Special Weather Statement	RNK	Caswell, Rockingham	56 min
May 23, 12:12 AM EDT	Special Weather Statement	RNK	Ashe, Watauga	63 min
May 23, 12:14 AM EDT	Flash Flood Warning	RNK	Ashe, Watauga, Wilkes	4 hr
May 23, 12:24 AM EDT	Special Weather Statement	RNK	Caswell	66 min
May 23, 2:11 AM EDT	Special Weather Statement	RNK	Stokes	64 min
May 23, 2:45 AM EDT	Special Weather Statement	RNK	Caswell, Rockingham	60 min
May 23, 3:08 PM EDT	Special Weather Statement	RNK	Wilkes	67 min
May 23, 3:15 PM EDT	Severe Thunderstorm Warning	RNK	Ashe, Watauga, Wilkes	45 min
May 23, 3:56 PM EDT	Severe Thunderstorm Warning	RNK	Surry, Wilkes, Yadkin	64 min
May 23, 4:14 PM EDT	Severe Thunderstorm Warning	RNK	Surry, Wilkes	46 min
May 23, 4:59 PM EDT	Special Weather Statement	RNK	Stokes	61 min

Nearby

Flash Flood Warnings in North Carolina, 2011 Every 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.