Alert archive / Virginia / Flash Flood Warnings in 2001

Flash Flood Warning 45, NWS Blacksburg, VA

July 29, 20015 counties in Virginia; 4 counties in West Virginia

NWS Blacksburg, VA issued this flash flood warning at Jul 29, 2001, 12:58 PM EDT for 5 counties in Virginia; 4 counties in West Virginia. It was in force for 4 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
Jul 29, 2001, 12:58 PM EDT (16:58 UTC)
Expired
Jul 29, 2001, 4:45 PM EDT
In force
4 hr
Issued by
NWS Blacksburg, VA
Area
Whole counties

Counties Alleghany County, VA, Bath County, VA, City of Covington, VA, City of Lexington, VA, Rockbridge County, VA, Greenbrier County, WV, Mercer County, WV, Monroe County, WV, Summers County, WV

The radar

The Roanoke radar (KFCX), 82 km from the middle of the area, began a volume at 17:00 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, 5.0 hours before the alert went out and 86 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 2001-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2001-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 155 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
462 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
155 m²/s²
0-3 km storm-relative helicity
178 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 291657
FFWRNK
VAC005-017-163-560-580-678-WVC025-055-063-089-292045-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
1258 PM EDT SUN JUL 29 2001

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MERCER COUNTY IN SOUTHEAST WEST VIRGINIA
  ALLEGHANY COUNTY IN WEST CENTRAL VIRGINIA
  BATH COUNTY IN WEST CENTRAL VIRGINIA
  SUMMERS COUNTY IN SOUTHEAST WEST VIRGINIA
  CLIFTON FORGE CITY IN WEST CENTRAL VIRGINIA
  MONROE COUNTY IN SOUTHEAST WEST VIRGINIA
  LEXINGTON CITY IN WEST CENTRAL VIRGINIA
  COVINGTON CITY IN WEST CENTRAL VIRGINIA
  ROCKBRIDGE COUNTY IN WEST CENTRAL VIRGINIA
  GREENBRIER COUNTY IN SOUTHEAST WEST VIRGINIA

* UNTIL 445 PM EDT.

* AT 1248 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
  AN AREA OF THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL FROM 35 
  MILES NORTH OF WARM SPRINGS TO 33 MILES WEST OF MATOAKA...MOVING 
  EAST AT 20 MPH.

LOCATIONS THREATENED BY HEAVY RAIN THROUGH 445 PM EDT INCLUDE
  RUPERT...
  SANDSTONE...
  RENICK...
  MATOAKA...
  HINTON...
  CAMP CREEK...

SLOW MOVING THUNDERSTORMS ARE PRODUCING TORRENTIAL RAINFALL AND 
FLASH FLOODING WEST OF THE WARNED AREA. THE STORMS WILL PROGRESS 
EAST ACROSS THE WARNING ARED BETWEEN 100 AND 200 PM EDT.  RAINFALL 
RATES OF 1 TO 2 INCHES PER HOUR WITH THESE STORMS WILL RESULT IN 
FLASH FLOODING OF SMALL STREAMS AND CREEKS...LOW LYING ROADS AND 
PROPERTY AND URBAN AREAS IN THE WARNING AREA.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE 
ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED.
MOVE TO HIGH GROUND IF FLOOD WATERS THREATEN.

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.

.END
$$

04

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 11:36 AM EDTFlash Flood WarningRNKSmyth, Tazewell3 hr
Jul 29, 1:51 PM EDTFlash Flood WarningRNKGrayson, Smyth3 hr
Jul 29, 2:29 PM EDTFlash Flood WarningRNKSmyth, Tazewell3 hr
Jul 29, 5:28 PM EDTFlash Flood WarningRNKSmyth, Tazewell6 hr
Jul 29, 6:02 PM EDTFlash Flood WarningRNKGreenbrier3 hr

Nearby

Flash Flood Warnings in Virginia, 2001Flash Flood Warnings in West Virginia, 2001Every flash flood warning in 2001

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.