Alert archive / Virginia / Flash Flood Warnings in 1992

Flash Flood Warning 36, NWS Blacksburg, VA

May 14, 1992Roanoke County, Virginia

NWS Blacksburg, VA issued this flash flood warning at May 14, 1992, 7:55 PM EDT for Roanoke County, Virginia. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
May 14, 1992, 7:55 PM EDT (23:55 UTC)
Expired
May 14, 1992, 10:00 PM EDT
In force
2 hr
Issued by
NWS Blacksburg, VA
Area
Whole counties

County Roanoke County, VA

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.9 hours before the alert went out and 126 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, Greensboro/Hi Pt, NC at 12:00Z on 1992-05-14Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 1992-05-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 0 square meters per square second.1939Sfc1 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
NaN m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
0 m²/s²
0-3 km storm-relative helicity
19 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 
TTAA00 KROA 142359
FFWROA
VAC161-770-775-150200-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ROANOKE VA
755 PM EDT THU MAY 14 1992
 
THE NATIONAL WEATHER SERVICE IN ROANOKE VAHAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1000 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL VIRGINIA
 
   ...ROANOKE COUNTY
 
  AND THE INDEPENDENT CITY OF
 
   ...ROANOKE
 
IN SOUTHWEST VIRGINIA THE INDEPENDENT CITY OF
 
   ...SALEM
 
RADAR INDICATES A STATIONARY THUNDERSTORM OVER ROANOKE COUNTY.
AUTOMATED RAIN GAGES HAVE SHOWN UP TO 1 TO 11/2 INCHES OF RAIN HAS
FALLEN IS LESS THAN ONE HOUR.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.
 
CUNNINGHAM

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, May 14, 7:04 PM EDT, 51 minutes before
VAZ013-014-015-016-150100-

SPECIAL WEATHER STATMENT
NATIONAL WEATHER SERVICE ROANOKE VA
703 PM EDT THU MAY 14 1992

AN AREA OF SHOWERS AND THUNDERSTORMS...A FEW WITH VERY HEAVY
RAIN...WERE OVER EASTERN PULASKI AND MONTGOMERY COUNTIES. THE
STRONGEST STORM WAS OVER NORTHERN MONTGOMERY COUNTY.

THESE STORMS WERE SHOWING VERY LITTLE MOVEMENT SO LOCALLY HEAVY
RAINFALL AND MINOR FLOODING IS POSSIBLE.

IF FLOODING IS OBSERVED...PLEASE MOVE TO HIGHEKR GROUND.

CUNNINGHAM

Nearby

Flash Flood Warnings in Virginia, 1992Every flash flood warning in 1992

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.