Alert archive / Virginia / Flash Flood Warnings in 2003

Flash Flood Warning 79, NWS Blacksburg, VA

September 4, 2003Pittsylvania County, City of Danville, Virginia

NWS Blacksburg, VA issued this flash flood warning at Sep 4, 2003, 2:14 PM EDT for Pittsylvania County, City of Danville, 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
Sep 4, 2003, 2:14 PM EDT (18:14 UTC)
Expired
Sep 4, 2003, 4:15 PM EDT
In force
2 hr
Issued by
NWS Blacksburg, VA
Area
Counties, with a storm outline in the text

Counties City of Danville, VA, Pittsylvania County, VA

The radar

The Roanoke radar (KFCX), 89 km from the middle of the area, began a volume at 18:13 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

Roanoke, VA (KRNK), launched 12:00Z, 6.2 hours before the alert went out and 58 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, Roanoke, VA at 12:00Z on 2003-09-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 684 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, Roanoke, VA at 12:00Z on 2003-09-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 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
684 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
494 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KRNK 041816
FFWRNK
VAC143-590-042015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
214 PM EDT THU SEP 4 2003

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DANVILLE IN SOUTH CENTRAL VIRGINIA
  PITTSYLVANIA COUNTY IN SOUTH CENTRAL VIRGINIA

* UNTIL 415 PM EDT

* AT 214 PM EDT...EMERGENCY MANAGEMENT OFFICIALS REPORTED FLOODING
  OF MANY CREEKS IN AND AROUND DANVILLE...WITH MULTIPLE ROAD CLOSURES.
  WEATHER RADAR INDICATED THAT AS MUCH AS TWO INCHES OF RAIN HAS FALLEN
  SINCE 100 PM...AND ANOTHER INCH OF RAIN WILL MOVE ACROSS THROUGH 330 PM.
  THIS WILL CONTINUE TO FLASH FLOOD THREAT OF CREEKS AND STREAMS...
  INCLUDING SANDY CREEK AND CANE CREEK.

* OTHER LOCATIONS THREATENED BY HEAVY RAIN INCLUDE...DANVILLE
  AIRPORT...DRY FORK...KEELING...RINGGOLD...SWANSONVILLE AND WESTOVER
  HILLS...

EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.

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 3679 7918 3655 7926 3656 7963 3674 7960

$$

05
2 follow-up statements
000 
WGUS71 KRNK 041919
FFSRNK
VAC143-590-042015-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
313 PM EDT THU SEP 4 2003

...A FLASH FLOOD WARNING CONTINUES FOR THE FOLLOWING COUNTIES UNTIL
415 PM EDT...

  DANVILLE IN SOUTH CENTRAL VIRGINIA
  PITTSYLVANIA COUNTY IN SOUTH CENTRAL VIRGINIA

CITY EMERGENCY MANAGERS REPORTED FLASH FLOODING IN AND AROUND 
DANVILLE. THE WESTBOUND LANE OF HIGHWAY 58 IS CLOSED DUE TO 3 FEET 
OF WATER...AROUND APPLE BRANCH. LONG BRANCH WAS ALSO REPORTED OUT OF 
ITS BANKS...AS WAS PUMPKIN CREEK...NEAR THE GROVE PARK COMMUNITY.

RAIN WILL BEGIN TAPERING OFF BY 4 PM...BUT THE THREAT OF FLOODING 
WILL CONTINUE UNTIL 415 PM. 

DO NOT DRIVE YOUR VEHICLE THROUGH A FLOODED ROAD. TURN AROUND AND 
FIND AN ALTERNATE ROUTE. IF A CREEK IS FLOODING YOUR LOCATION...MOVE 
TO HIGHER GROUND.

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 042015
FFSRNK
VAC143-590-042145-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
414 PM EDT THU SEP 4 2003

...THE FLASH FLOOD WARNING WHICH WAS IN EFFECT FOR DANVILLE AND 
PITTSYLVANIA COUNTIES HAS EXPIRED AS OF 415 PM EDT...

THE HEAVY RAIN HAS ENDED OVER THE WARNED AREA. EMERGENCY MANAGERS 
REPORTED STREAMS AND CREEKS IN THE WARNED AREA RECEDING OR 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.

$$

WP

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 4, 12:13 PM EDTSevere Thunderstorm WarningRNKBedford32 min

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.