Alert archive / Virginia / Flash Flood Warnings in 2000

Flash Flood Warning 39, NWS Blacksburg, VA

August 27, 2000Amherst County, Campbell County, City of Lynchburg, Virginia

NWS Blacksburg, VA issued this flash flood warning at Aug 27, 2000, 11:36 PM EDT for Amherst County, Campbell County, City of Lynchburg, Virginia. It was in force for 114 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 27, 2000, 11:36 PM EDT (03:36 UTC)
Expired
Aug 28, 2000, 1:30 AM EDT
In force
114 min
Issued by
NWS Blacksburg, VA
Area
Whole counties

Counties Amherst County, VA, Campbell County, VA, City of Lynchburg, VA

The radar

The Roanoke radar (KFCX), 110 km from the middle of the area, began a volume at 03:37 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 00:00Z, 3.6 hours before the alert went out and 40 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 00:00Z on 2000-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 861 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, Roanoke, VA at 00:00Z on 2000-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 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
861 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1046 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KRNK 280339
FFWRNK
VAC009-031-680-280530-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
ISSUED BY WAKEFIELD VA
1136 PM EDT SUN AUG 27 2000

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  AMHERST COUNTY IN CENTRAL VIRGINIA
  CAMPBELL COUNTY IN CENTRAL VIRGINIA
  LYNCHBURG IN CENTRAL VIRGINIA

* UNTIL 130 AM EDT

* AT 1132 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR            
  INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL IN 
  AMHERST AND CAMPBELL COUNTIES...INCLUDING THE CITY 
  OF LYNCHBURG...MOVING SOUTH AT 10 MPH. 

* SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL IN THE
  WARNED AREA. RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH
  FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLASH
  FLOODING INCLUDE...BLUE RIDGE FARMS...LYNCHBURG...REUSENS...
  BUNCHER...TYREE AND AGRICOLA.

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. IT ONLY TAKES A FEW INCHES OF SWIFTLY FLOWING WATER TO CARRY
VEHICLES. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED. MOVE
TO HIGHER GROUND.

$$

NS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 27, 8:32 PM EDTSevere Thunderstorm WarningRNKMontgomery28 min
Aug 27, 8:58 PM EDTSevere Thunderstorm WarningRNKCraig47 min
Aug 27, 9:17 PM EDTSevere Thunderstorm WarningRNKAlleghany, City of Covington43 min
Aug 27, 9:17 PM EDTSevere Thunderstorm WarningRNKBotetourt43 min
Aug 27, 9:51 PM EDTFlash Flood WarningRNKFloyd114 min
Aug 27, 10:29 PM EDTFlash Flood WarningRNKMontgomery, Roanoke, City of Roanoke, City of Salem3 hr
Aug 27, 11:01 PM EDTSevere Thunderstorm WarningRNKFranklin, Henry44 min

Nearby

Flash Flood Warnings in Virginia, 2000Every flash flood warning in 2000

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.