Alert archive / Virginia / Flash Flood Warnings in 1992

Flash Flood Warning 7, NWS Blacksburg, VA

January 3, 1992Floyd County, Virginia

NWS Blacksburg, VA issued this flash flood warning at Jan 3, 1992, 9:25 PM EST for Floyd County, Virginia. It was in force for 110 min.

The area

The counties it named.

The facts

Issued
Jan 3, 1992, 9:25 PM EST (02:25 UTC)
Expired
Jan 3, 1992, 11:15 PM EST
In force
110 min
Issued by
NWS Blacksburg, VA
Area
Whole counties

County Floyd County, VA

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 2.4 hours before the alert went out and 103 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 00:00Z on 1992-01-04Temperature 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 00:00Z on 1992-01-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 309 square meters per square second.19395878Sfc1 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
638 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
309 m²/s²
0-3 km storm-relative helicity
445 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 040234 COR
FFWROA
VAC089-063-040415-

BULLETIN
FLOOD WARNING
NATIONAL WEATHER SERVICE ROANOKE VA
925 PM EST FRI JAN 3 1992

THE NATIONAL WEATHER SERVICE IN ROANOKE VA HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL 1115 PM EST  FOR PEOPLE IN THE
THE FOLLOWING LOCATIONS...

IN SOUTH CENTRAL VIRGINIA

   ...HENRY COUNTY

IN SOUTHWEST VIRGINIA

   ...FLOYD COUNTY

REPORTS HAVE BEEN RECEIVED OF WATER ACROSS SOME ROADS IN FLOYD COUNTY.
THE EMERGENCY SERVICES COORDINATOR FOR HENRY COUNTY REPORTS SOME
SMALLER STREAMS BEGINNING TO COME OUT OF THEIR BANKS.

DO NOT ATTEMPT TO DRIVE ACROSS ROADWAYS UNDER ANY WATER.


(CORRECTED TO MAKE THIS A FLOOD WARNING VICE FLASH FLOOD)

MCINTOSH

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 3, 7:20 PM ESTFlash Flood WarningRNKCraig, Montgomery, Roanoke4 hr
Jan 3, 7:20 PM ESTFlash Flood WarningRNKCity of Roanoke4 hr
Jan 3, 7:20 PM ESTFlash Flood WarningRNKBotetourt4 hr
Jan 3, 7:20 PM ESTFlash Flood WarningRNKCity of Salem4 hr
Jan 3, 7:20 PM ESTFlash Flood WarningRNKFranklin4 hr
Jan 3, 9:25 PM ESTFlash Flood WarningRNKHenry110 min
Jan 3, 11:21 PM ESTFlash Flood WarningRNKCity of Roanoke4 hr
Jan 3, 11:21 PM ESTFlash Flood WarningRNKCraig, Montgomery4 hr
Jan 3, 11:21 PM ESTFlash Flood WarningRNKFloyd4 hr
Jan 3, 11:21 PM ESTFlash Flood WarningRNKRoanoke, City of Salem4 hr
Jan 3, 11:21 PM ESTFlash Flood WarningRNKFranklin, Henry4 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.