Alert archive / Virginia / Flash Flood Warnings in 2003

Flash Flood Warning 52, NWS Blacksburg, VA

August 8, 2003Carroll County, Virginia

NWS Blacksburg, VA issued this flash flood warning at Aug 8, 2003, 2:57 PM EDT for Carroll County, Virginia. 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
Aug 8, 2003, 2:57 PM EDT (18:57 UTC)
Expired
Aug 8, 2003, 6:00 PM EDT
In force
3 hr
Issued by
NWS Blacksburg, VA
Area
Counties, with a storm outline in the text

County Carroll County, VA

The radar

The Roanoke radar (KFCX), 65 km from the middle of the area, began a volume at 18:59 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, 7.0 hours before the alert went out and 123 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 2003-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 810 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 2003-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 square meters per square second.19395878Sfc1 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
810 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
590 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KRNK 081900
FFWRNK
VAC035-082200-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
257 PM EDT FRI AUG 8 2003

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN CARROLL COUNTY IN SOUTHWEST VIRGINIA

* UNTIL 600 PM EDT

* AT 257 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED CONTINUING 
  SHOWERS AND THUNDERSTORMS OVER FAR NORTHWESTERN CARROLL COUNTY ALONG
  BRUSH CREEK BETWEEN BYLLESBY AND FRIES JUNCTION.  FLOODING ALONG 
  ROUTE 94 IS HIGHLY LIKELY.

* SOME LOCATIONS THREATENED BY HEAVY RAIN THROUGH 600 PM EDT INCLUDE
  BYLLESBY...
  FRIES JUNCTION...

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.

LAT...LON 3681 8103 3670 8094 3686 8076 3682 8097

$$

09
1 follow-up statement
000 
WGUS71 KRNK 082105
FFSRNK
VAC035-082200-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
504 PM EDT FRI AUG 8 2003

...THE FLASH FLOOD WARNING WHICH WAS IN EFFECT UNTIL 600 PM EDT FOR

  NORTHWESTERN CARROLL COUNTY IN SOUTHWEST VIRGINIA

HAS BEEN CANCELLED.

THE HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS AND CREEKS IN
THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO RECEDE...ENDING THE
FLASH FLOOD THREAT. EVEN THOUGH STREAMS AND CREEKS WERE 
RECEDING...SOME LOW WATER BRIDGES STILL MAY BE COVERED WITH WATER. 
MOTORISTS ARE ADVISED TO AVOID DRIVING THROUGH FLOODED ROADWAYS.

STAY AWAY FROM DRAINAGE DITCHES...STORM SEWERS OR STREAMS...AS THEY 
CAN BECOME DEADLY TORRENTS AFTER HEAVY RAIN.

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.

$$

JDS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 7:06 PM EDTFlash Flood WarningRNKCarroll3 hr
Aug 8, 7:30 PM EDTFlash Flood WarningRNKRockbridge, City of Buena Vista, City of Lexington3 hr

Nearby

Flash Flood Warnings in Virginia, 2003Every flash flood warning in 2003

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.