Alert archive / Virginia / Flash Flood Warnings in 1992
Flash Flood Warning 16, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at Apr 21, 1992, 10:49 AM EDT for Franklin County, Patrick County, Virginia. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Apr 21, 1992, 10:49 AM EDT (14:49 UTC)
- Expired
- Apr 21, 1992, 2:45 PM EDT
- In force
- 4 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Whole counties
Counties Franklin County, VA, Patrick County, VA
The nearest sounding before it
Huntington/Tri S, WV (KHTS), launched 12:00Z, 2.8 hours before the alert went out and 273 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.
- Mixed-layer CAPE
- 67 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 1231 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 130 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KROA 211452 FFWROA VAC067-141-211845- BULLETIN - IMMEDIATE BROADCAST REQUESTED FLOOD WARNING NATIONAL WEATHER SERVICE ROANOKE VA 1049 AM EDT TUE APR 21 1992 THE NATIONAL WEATHER SERVICE IN ROANOKE VA HAS ISSUED A FLOOD WARNING EFFECTIVE UNTIL 245 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL VIRGINIA ...FRANKLIN COUNTY...PATRICK COUNTY RAINFALL AMOUNTS IN EXCESS OF 3 INCHES OVER THE LAST 12 HOURS HAVE CAUSED BANKFULL RISES ON MANY SMALL STREAMS IN THE WARNED AREA. RADAR SHOWS AN AREA OF MODERATE RAIN OVER THE WARNED AREAS WHICH SHOULD PRODUCE FLOODING WITH IN THE NEXT 1 TO 2 HOURS. 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. MOST FLOOD RELATED 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. CUNNINGHAM
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 10:02 AM EDT | Flash Flood Warning | RNK | Carroll | 3 hr |
| Apr 21, 1:12 PM EDT | Flash Flood Warning | RNK | Floyd, Montgomery, Roanoke | 3 hr |
| Apr 21, 1:41 PM EDT | Flash Flood Warning | RNK | Botetourt, Craig | 2 hr |
| Apr 21, 2:57 PM EDT | Flash Flood Warning | RNK | Franklin, Patrick | 3 hr |
| Apr 21, 3:31 PM EDT | Flash Flood Warning | RNK | Carroll, Grayson, Wythe | 3 hr |
| Apr 21, 3:31 PM EDT | Flash Flood Warning | RNK | Craig, Floyd, Montgomery, Roanoke | 3 hr |
| Apr 21, 3:31 PM EDT | Flash Flood Warning | RNK | Botetourt | 3 hr |
| Apr 21, 3:59 PM EDT | Flash Flood Warning | RNK | Franklin, Patrick | 3 hr |
| Apr 21, 3:59 PM EDT | Flash Flood Warning | RNK | Bedford | 2 hr |
| Apr 21, 5:59 PM EDT | Flash Flood Warning | RNK | Bedford | 2 hr |
| Apr 21, 6:44 PM EDT | Flash Flood Warning | RNK | Floyd, Franklin, Patrick, Roanoke | 3 hr |
| Apr 21, 6:44 PM EDT | Flash Flood Warning | RNK | Carroll, Grayson | 3 hr |
| Apr 21, 6:44 PM EDT | Flash Flood Warning | RNK | Botetourt, Craig | 3 hr |
| Apr 21, 6:44 PM EDT | Flash Flood Warning | RNK | Montgomery | 3 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.