Alert archive / Virginia / Flash Flood Warnings in 2004

Flash Flood Warning 29, NWS Blacksburg, VA

August 1, 2004Carroll County, Virginia

NWS Blacksburg, VA issued this flash flood warning at Aug 1, 2004, 6:25 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 1, 2004, 6:25 PM EDT (22:25 UTC)
Expired
Aug 1, 2004, 8:30 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), 48 km from the middle of the area, began a volume at 22:27 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, 10.4 hours before the alert went out and 106 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 2004-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 558 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 2004-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 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
558 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
578 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
-6 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KRNK 012228
FFWRNK
VAC035-020030-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
625 PM EDT SUN AUG 1 2004

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

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

* UNTIL 830 PM EDT

* AT 622 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  VERY HEAVY RAIN FROM A THUNDERSTORM 4 MILES NORTH OF HILLSVILLE.   
  THE STORM PRODUCING FLASH FLOODING WAS NEARLY STATIONARY.

* LOCATIONS IMPACTED INCLUDE...   
  DUGSPUR...
  HILLSVILLE...
  SYLVATUS...
  LONGSHOAL...
  

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLASH FLOODING OF 
SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG 
THE BANKS OF CREEKS AND STREAMS. SOME CREEKS AFFECTED 
INCLUDE...GREASY CREEK AND LITTLE REED ISLAND CREEK.

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.

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

LAT...LON 3689 8064 3681 8092 3661 8085 3668 8052

$$

WP
2 follow-up statements
000 
WGUS71 KRNK 012329
FFSRNK
VAC035-020030-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
726 PM EDT SUN AUG 1 2004

...A FLASH FLOOD WARNING CONTINUES UNTIL 830 PM EDT FOR CARROLL
COUNTY...

AT 724 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A THUNDERSTORM PRODUCING HEAVY RAINS ACROSS WESTERN 
SECTIONS OF CARROLL COUNTY.  THIS STORM WAS LOCATED NEAR  WOODLAWN. 
THE THUNDERSTORM WITH EXCESSIVE RAIN WAS DRIFTING SLOWLY WEST.

FLASH FLOODING OF SMALL CREEKS AND STREAMS...ESPECIALLY NORTH OF 
HILLSVILLE AND WOODLAWN CAN BE EXPECT THROUGH 830 PM.

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 
FOR HIGHER GROUND. MOST FLOOD DEATHS OCCUR IN AUTOMOBILES.

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

LAT...LON 3689 8064 3681 8092 3661 8085 3668 8052

$$

05
000 
WGUS71 KRNK 020028
FFSRNK
VAC035-020030-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
827 PM EDT SUN AUG 1 2004

...THE FLASH FLOOD WARNING FOR CARROLL COUNTY WILL EXPIRE AT 830 PM
EDT...

HEAVY RAINS HAVE ENDED ACROSS MOST LOCATIONS THAT HAD HEAVY RAIN 
EARLIER. CREEKS AND STREAMS WILL RUN HIGH OVER THE NEXT HOUR...BUT 
SHOULD BEGIN RECEDING THEREAFTER.

TO REPORT ANY FLOODING...PLEASE CONTACT THE NATIONAL WEATHER
SERVICE IN BLACKSBURG AT...1...8 6 6...2 1 5...4 3 2 4.

LAT...LON 3689 8064 3681 8092 3661 8085 3668 8052

$$

05

Nearby

Flash Flood Warnings in Virginia, 2004Every flash flood warning in 2004

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.