Alert archive / Virginia / Flash Flood Warnings in 1992

Flash Flood Warning 9, NWS Blacksburg, VA

January 3, 1992Franklin County, Henry County, Virginia

NWS Blacksburg, VA issued this flash flood warning at Jan 3, 1992, 11:21 PM EST for Franklin County, Henry County, Virginia. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued
Jan 3, 1992, 11:21 PM EST (04:21 UTC)
Expired
Jan 4, 1992, 3:30 AM EST
In force
4 hr
Issued by
NWS Blacksburg, VA
Area
Whole counties

Counties Franklin County, VA, Henry County, VA

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 4.4 hours before the alert went out and 84 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 040429
FFWROA
VAC067-089-161-770-045-063-121-775-040830-
 
BULLETIN - EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ROANOKE VA
1121 PM EST FRI JAN 3 1992
 
THE NATIONAL WEATHER SERVICE IN ROANOKE VAHAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  330 AM EST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH CENTRAL VIRGINIA
 
   ...FRANKLIN COUNTY...HENRY COUNTY...ROANOKE COUNTY
 
  AND THE INDEPENDENT CITIES OF
 
   ...ROANOKE...SALEM
 
IN SOUTHWEST VIRGINIA
 
   ...CRAIG COUNTY...FLOYD COUNTY...MONTGOMERY COUNTY
 
FLOODING CONTINUES IN THE ABOVE COUNTIES. REPORTS FROM
SKYWARN SPOTTERS AND SHERIFFS OFFICES SHOWED THAT TROUBLE SPOTS
PERSISTED.  THE MOST TROUBLESOME AREAS WERE IN MONTGOMERY AND
WEST ROANOKE COUNTY.
 
RAINS STILL PERSISTED ACROSS THE FLOOD WATCH/WARNING AREA. THE RAIN
APPEARED TO TAPER OFF A BIT THE PAST HOUR...ALTHOUGH IT IS TOO EARLY
TO KNOW IF THIS TREND WILL CONTINUE.
 
FURTHER STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT LATER
TONIGHT.
 
END/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, 9:25 PM ESTFlash Flood WarningRNKFloyd110 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

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.