Alert archive / Virginia / Flash Flood Warnings in 2003

Flash Flood Warning 30, NWS Blacksburg, VA

June 18, 2003Carroll County, Grayson County, Virginia

NWS Blacksburg, VA issued this flash flood warning at Jun 18, 2003, 5:14 PM EDT for Carroll County, Grayson 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: Jun 18, 2003, 5:14 PM EDT (21:14 UTC)
Expired: Jun 18, 2003, 8:00 PM EDT
In force: 3 hr
Issued by: NWS Blacksburg, VA
Area: Counties, with a storm outline in the text

Counties Carroll County, VA, Grayson County, VA

The radar

The Roanoke radar (KFCX), 76 km from the middle of the area, began a volume at 21:16 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, 9.2 hours before the alert went out and 128 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: 58 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 476 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 74 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 182114
FFWRNK
VAC035-077-190000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
514 PM EDT WED JUN 18 2003

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN GRAYSON COUNTY IN SOUTHWEST VIRGINIA 
  NORTHWEST CARROLL COUNTY IN SOUTHWEST VIRGINIA

* UNTIL 800 PM EDT

* AT 514 PM EDT...NATIONAL WEATHER SERVICE RADAR INDICATED           
  THUNDERSTORMS WITH TORRENTIAL RAIN PERISISTING ACROSS THE WARNED   
  AREA. RADAR ESTIMATED THAT UP TO TWO INCHES OF RAIN HAD FALLEN IN  
  PARTS OF NORTHWEST CARROLL COUNTY IN THE PAST HOUR. AN ADDITIONAL   
  INCH OR TWO OF RAIN WILL LIKELY CAUSE FLOODING FROM STEVENS CREEK  
  EAST TO BYLLESBY.

* SOME LOCATIONS THREATENED BY HEAVY RAIN THROUGH 800 PM EDT INCLUDE
  FRIES...

EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF
CREEKS AND STREAMS...ROADS AND ROADSIDE CULVERTS. THE HEAVY RAINS
COULD ALSO CAUSE ROCK AND MUDSLIDES.

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 3677 8106 3682 8100 3684 8080 3674 8077
          3664 8139 3675 8132

$$

10

2 follow-up statements

000 
WGUS71 KRNK 182237
FFSRNK
VAC035-077-190000-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
635 PM EDT WED JUN 18 2003

...A FLASH FLOOD WARNING CONTINUES FOR THE FOLLOWING COUNTIES...
NORTHERN GRAYSON AND NORTHWEST CARROLL...

UNTIL 800 PM EDT.

AT 632 PM EDT...NATIONAL WEATHER SERVICE RADAR SHOWED HEAVY RAIN 
CONTINUING OVER MUCH OF THE WARNED AREA. RADAR AND AUTOMATED 
OBSERVATION SYSTEMS INDICATED THAT AROUND 2 INCHES OF RAIN HAD 
FALLEN SINCE 5:00 PM. THIS HAS PRODUCED FLASH FLOODING OF MANY 
CREEKS AND STREAMS FROM NORTH OF FRIES TO AROUND BYLLESBY. 
EAGLEBOTTOM CREEK WAS REPORTED OUT OF ITS BANKS AND THREATENING A 
LOCAL BUSINESS. BRUSH CREEK NEAR BYLLESBY WAS ALSO REPORTED FLOODED.

RAINFALL SHOULD CONTINUE TO SLOWLY DIMINISH ACROSS THE AREA THIS 
EVENING. HOWEVER...EXCESSIVE RUNOFF FROM THE EARLIER RAINFALL WILL 
CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY 
ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.

REMEMBER DO NOT ATTEMPT TO DRIVE ACROSS FLOODED ROADWAYS.

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

000 
WGUS71 KRNK 182329
FFSRNK
VAC035-077-190000-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
730 PM EDT WED JUN 18 2003


...FLASH FLOOD WARNING FOR NORTHERN GRAYSON AND NORTHWEST CARROLL 
COUNTIES WILL EXPIRE AT 8:00 PM...
...A FLOOD WATCH CONTINUES TONIGHT AND THURSDAY...

NATIONAL WEATHER SERVICE RADAR INDICATED THE VERY HEAVY RAINFALL WAS 
ENDING ACROSS THE WARNED AREA...AND THE FLOOD THREAT WAS 
DIMINISHING. SOME MINOR FLOODING MAY CONTINUE...BUT THE THREAT OF 
SERIOUS FLOODING IS ENDING.  THUS...THE FLASH FLOOD WARNING IS BEING 
ALLOWED TO EXPIRE. 

STAY TUNED TO WEATHER RADIO OR LOCAL MEDIA FOR THE LATEST WEATHER 
INFORMATION.

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.

Issued	Product	Office	Counties	Lasted
Jun 18, 6:56 PM EDT	Flash Flood Warning	RNK	Craig	3 hr

Nearby

Flash Flood Warnings in Virginia, 2003 Every 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.