Alert archive / North Carolina / Flash Flood Warnings in 2002

Flash Flood Warning 20, NWS Blacksburg, VA

June 27, 2002Watauga County, North Carolina

NWS Blacksburg, VA issued this flash flood warning at Jun 27, 2002, 2:33 PM EDT for Watauga County, North Carolina. It was in force for 117 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 27, 2002, 2:33 PM EDT (18:33 UTC)
Expired
Jun 27, 2002, 4:30 PM EDT
In force
117 min
Issued by
NWS Blacksburg, VA
Area
Whole counties

County Watauga County, NC

The radar

The Knoxville radar (KMRX), 153 km from the middle of the area, began a volume at 18:36 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, 6.6 hours before the alert went out and 162 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2002-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 926 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2002-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
926 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
763 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KRNK 271833
FFWRNK
NCC189-272030-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
232 PM EDT THU JUN 27 2002

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN WATAUGA COUNTY IN NORTHWEST NORTH CAROLINA

* UNTIL 430 PM EDT

* AT 232 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED OVER TWO  
  INCHES OF RAIN HAD FALLEN JUST SOUTHEAST OF BOONE SINCE 1:30 PM.   
  FLASH FLOODING ALONG FLANNERY FORK AND OTHER SMALL STREAMS CAN BE  
  EXPECTED.

* OTHER LOCATIONS THREATENED BY HEAVY RAIN INCLUDE...AHO...FOSCOE...
  LOVILL...MEAT CAMP...RUTHERWOOD...SANDS...SILVERSTONE AND VALLE
  CRUCIS...

<<CALL TO ACTION>>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. VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY. MOVE TO HIGHER GROUND.

RELAY REPORTS OF FLOODING TO THE NATIONAL WEATHER SERVICE IN
BLACKSBURG BY CALLING TOLL FREE...1...8 6 6...2 1 5...4 3 2 4.

$$

10

LAT...LON 3629 8163 3613 8155 3614 8180 3631 8180
1 follow-up statement
000 
WGUS71 KRNK 271939
FFSRNK
NCC189-272030-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
338 PM EDT THU JUN 27 2002

...FLASH FLOOD WARNING CONTINUES UNTIL 430 PM EDT FOR EASTERN 
WATAUGU COUNTY...

AT 335 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED RAIN 
CONTINUING OVER EASTERN WATAUGA COUNTY..ALTHOUGH BEGINNING TO TAPER 
OFF.  HOWEVER...RUNOFF IS EXPECTED TO CONTINUE THROUGH 4:30 PM.

SOME LOCATIONS IN THE WARNING AREA INCLUDE....


AT 240 PM EDT...A MUDSLIDE WAS REPORTED ALONG ROUTE 321 BETWEEN 
BOONE AND BLOWING ROCK.

EXCESSIVE RUNOFF FROM THIS STORM WILL CONTINUE TO CAUSE FLASH 
FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS 
FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

RELAY YOUR REPORTS OF FLOODING TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1...8 6 6...2 1 5...4 3 2 4.

SK

$$

LAT...LON 3612 8174 3612 8164 3621 8149 3628 8165

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 4:04 PM EDTSevere Thunderstorm WarningRNKRockingham, Stokes41 min
Jun 27, 4:44 PM EDTSevere Thunderstorm WarningRNKRockingham31 min

Nearby

Flash Flood Warnings in North Carolina, 2002Every flash flood warning in 2002

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.