Alert archive / Virginia / Flash Flood Warnings in 1992

Flash Flood Warning 2, NWS Wakefield, VA

April 21, 1992Nelson County, Virginia

NWS Wakefield, VA issued this flash flood warning at Apr 21, 1992, 3:50 PM EDT for Nelson County, Virginia. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Apr 21, 1992, 3:50 PM EDT (19:50 UTC)
Expired
Apr 21, 1992, 6:45 PM EDT
In force
3 hr
Issued by
NWS Wakefield, VA
Area
Whole counties

County Nelson County, VA

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.8 hours before the alert went out and 183 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, Washington/Dulle, VA at 12:00Z on 1992-04-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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, Washington/Dulle, VA at 12:00Z on 1992-04-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 107 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
550 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
107 m²/s²
0-3 km storm-relative helicity
110 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 KRIC 211950
FFWRIC
VAC125-212245-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE RICHMOND VA
350 PM EDT TUE APR 21 1992
 
THE NATIONAL WEATHER SERVICE IN RICHMOND HAS ISSUED A
FLOOD WARNING                     EFFECTIVE UNTIL  645 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL VIRGINIA
 
   ...NELSON COUNTY
 
DEVILS KNOB AUTOMATED GUAGE IN WESTERN NELSON COUNTY HAS MEASURED MORE
THAN 5 INCHES OF RAIN IN THE LAST 12 HOURS. THE SHERIFF DEPARTMENT HAS
REPORTED STREAMS IN THE TYRO AREA ARE NEAR BANKFULL.
 
 
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.  VEHICLES CAUGHT IN RISING WATER SHOULD BE
ABANDONED QUICKLY.  MOVE TO HIGHER GROUND.
CHILLAG

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 21, 1:26 PM EDTFlash Flood WarningAKQAlleghany3 hr
Apr 21, 3:56 PM EDTFlash Flood WarningAKQRockbridge3 hr
Apr 21, 4:16 PM EDTFlash Flood WarningAKQBath3 hr
Apr 21, 4:36 PM EDTFlash Flood WarningAKQAlleghany3 hr
Apr 21, 6:54 PM EDTFlash Flood WarningAKQBath, Nelson, Rockbridge3 hr

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.