Alert archive / Virginia / Flash Flood Warnings in 2003

Flash Flood Warning 45, NWS Blacksburg, VA

August 6, 2003Carroll County, Virginia

NWS Blacksburg, VA issued this flash flood warning at Aug 6, 2003, 8:21 PM EDT for Carroll County, Virginia. It was in force for 2 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 6, 2003, 8:21 PM EDT (00:21 UTC)
Expired
Aug 6, 2003, 10:45 PM EDT
In force
2 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), 45 km from the middle of the area, began a volume at 00:21 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 00:00Z, 0.4 hours before the alert went out and 108 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 00:00Z on 2003-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 413 joules per kilogram.LCLEL10008507005003002001001 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 00:00Z on 2003-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.193958Sfc1 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
413 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1235 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
16 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KRNK 070022
FFWRNK
VAC035-070245-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
821 PM EDT WED AUG 6 2003

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTH CENTRAL CARROLL COUNTY IN SOUTHWEST VIRGINIA

* UNTIL 1045 PM EDT

* AT 821 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED A 
  THUNDERSTORM WITH VERY HEAVY RAIN NEARLY STATIONARY JUST WEST
  OF DUGSPUR ALONG BIG REED ISLAND CREEK.  RADAR ESTIMATED AROUND
  2 INCHES OF RAIN HAD FALLEN IN THIS AREA SINCE 7 PM.  AS A RESULT
  FLOODING IS LIKELY IN THIS AREA.

* SOME LOCATIONS THREATENED BY HEAVY RAIN THROUGH 1045 PM EDT INCLUDE
  LIBERTY HILL...
  DUGSPUR...

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.

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 3682 8082 3668 8067 3679 8054 3691 8064

$$

09
2 follow-up statements
000 
WGUS71 KRNK 070142
FFSRNK
VAC035-070245-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
940 PM EDT WED AUG 6 2003

...A FLASH FLOOD WARNING CONTINUES FOR THE FOLLOWING COUNTY UNTIL
1045 PM EDT...

  NORTH CENTRAL CARROLL COUNTY IN SOUTHWEST VIRGINIA

AT 938 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY
HEAVY RAINFALL 3 MILES NORTH OF HILLSVILLE...THE SHOWERS WERE NEARLY 
STATIONARY.

THIS HEAVY RAINFALL WILL CAUSE FLASH FLOODING ALONG BIG REED ISLAND 
CREEK.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS.

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.

$$

WP
000 
WGUS71 KRNK 070231
FFSRNK
VAC035-070300-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1030 PM EDT WED AUG 6 2003

...THE FLASH FLOOD WARNING WHICH WAS IN EFFECT FOR NORTHERN CARROLL 
COUNTY WILL BE ALLOWED TO EXPIRE AT 1045 PM EDT...

THE HEAVY RAIN THAT HAD PERSISTED BETWEEN DUGSPUR AND 
HILLSVILLE...ALONG BIG REED ISLAND CREEK HAS ENDED. STREAMS AND 
CREEKS IN THE WARNED AREA SHOULD BE BEGINNING TO RECEDE...ENDING THE 
FLASH FLOOD THREAT. EVEN THOUGH STREAMS AND CREEKS WERE 
RECEDING...SOME ROADWAYS STILL MAY BE COVERED WITH WATER. MOTORISTS 
ARE ADVISED TO AVOID DRIVING THROUGH FLOODED ROADWAYS.

AT 1027 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
SHOWERS EXTENDING FROM NORTHERN CARROLL COUNTY INTO GRAYSON COUNTY 
WEST OF GALAX. THESE SHOWERS SHOULD CONTINUE TO SLOWLY WEAKEN...AND 
NOT POSE ANY ADDITIONAL FLOODING THREAT DURING THE NEXT COUPLE OF 
HOURS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODS AND FLASH FLOODS.

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.

$$

JH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 1:09 AM EDTFlash Flood WarningRNKPatrick3 hr
Aug 7, 1:34 AM EDTFlash Flood WarningRNKCarroll3 hr
Aug 7, 7:56 PM EDTFlash Flood WarningRNKTazewell3 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.