Alert archive / Virginia / Flash Flood Warnings in 2000

Flash Flood Warning 3, NWS Blacksburg, VA

April 17, 2000Montgomery County, Virginia

NWS Blacksburg, VA issued this flash flood warning at Apr 17, 2000, 2:43 PM EDT for Montgomery County, Virginia. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 17, 2000, 2:43 PM EDT (18:43 UTC)
Expired
Apr 17, 2000, 8:15 PM EDT
In force
6 hr
Issued by
NWS Blacksburg, VA
Area
Whole counties

County Montgomery County, VA

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 6.7 hours before the alert went out and 79 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 2000-04-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 6 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 12:00Z on 2000-04-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 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
6 J/kg
Mixed-layer CIN
-138 J/kg
Mixed-layer LCL
1222 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
116 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 171843
FFWRNK
VAC121-180015-

BULLETIN--IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING...RETRANSMITTED 
NATIONAL WEATHER SERVICE BLACKSBURG VA
244PM EDT MON APR 17 2000

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN MONTGOMERY COUNTY IN SOUTHWEST VIRGINIA.

* UNTIL 815 PM EDT.

* AT 210 PM EDT ... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
A THUNDERSTORM WITH VERY HEAVY RAINFALL JUST SOUTHWEST OF SHAWSVILLE.
MOUNT.

* THIS STORM IS MOVING TO THE NORTHEAST AT 15 MPH. RAINFALL RATES OF 
UP TO TWO INCHES PER HOUR ARE INDICATED BY RADAR.


<< CALL TO ACTION >> FOR YOUR SAFETY...DO NOT DRIVE THROUGH AREAS 
WHERE WATER @COVERS THE ROAD.


...RETRANSMISSION OF PREVIOUSLY ISSUED WARNING...  ISSUED 212 PM EDT.

$$
JVW/MG
NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 17, 1:06 PM EDTSevere Thunderstorm WarningRNKPatrick39 min
Apr 17, 1:11 PM EDTSevere Thunderstorm WarningRNKFranklin49 min
Apr 17, 1:18 PM EDTSevere Thunderstorm WarningRNKMontgomery42 min
Apr 17, 1:39 PM EDTFlash Flood WarningRNKPatrick6 hr
Apr 17, 1:50 PM EDTSevere Thunderstorm WarningRNKFranklin, Patrick40 min
Apr 17, 2:00 PM EDTSevere Thunderstorm WarningRNKMontgomery30 min
Apr 17, 2:05 PM EDTSevere Thunderstorm WarningRNKCharlotte40 min
Apr 17, 2:29 PM EDTSevere Thunderstorm WarningRNKFranklin46 min
Apr 17, 2:37 PM EDTSevere Thunderstorm WarningRNKPittsylvania38 min
Apr 17, 2:40 PM EDTFlash Flood WarningRNKFranklin6 hr
Apr 17, 2:42 PM EDTSevere Thunderstorm WarningRNKCharlotte48 min
Apr 17, 3:02 PM EDTSevere Thunderstorm WarningRNKBedford, Campbell43 min
Apr 17, 3:13 PM EDTSevere Thunderstorm WarningRNKPittsylvania47 min
Apr 17, 3:23 PM EDTTornado WarningRNKCampbell37 min
Apr 17, 3:45 PM EDTSevere Thunderstorm WarningRNKCampbell, Pittsylvania45 min
Apr 17, 4:10 PM EDTTornado WarningRNKCharlotte35 min
Apr 17, 4:36 PM EDTSevere Thunderstorm WarningRNKBedford39 min
Apr 17, 5:03 PM EDTSevere Thunderstorm WarningRNKWythe42 min
Apr 17, 5:33 PM EDTSevere Thunderstorm WarningRNKCarroll, Patrick42 min
Apr 17, 5:58 PM EDTFlash Flood WarningRNKRoanoke, City of Roanoke, City of Salem92 min
Apr 17, 6:21 PM EDTSevere Thunderstorm WarningRNKCarroll, Floyd24 min
Apr 17, 6:29 PM EDTSevere Thunderstorm WarningRNKFranklin, Patrick46 min
Apr 17, 7:09 PM EDTSevere Thunderstorm WarningRNKPatrick36 min
Apr 17, 7:37 PM EDTSevere Thunderstorm WarningRNKFranklin23 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.