Alert archive / Virginia / Flash Flood Warnings in 1992
Flash Flood Warning 17, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at Apr 21, 1992, 1:12 PM EDT for Floyd County, Montgomery County, Roanoke County, Virginia. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Apr 21, 1992, 1:12 PM EDT (17:12 UTC)
- Expired
- Apr 21, 1992, 4:15 PM EDT
- In force
- 3 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Whole counties
Counties Floyd County, VA, Montgomery County, VA, Roanoke County, VA
The nearest sounding before it
Huntington/Tri S, WV (KHTS), launched 12:00Z, 5.2 hours before the alert went out and 242 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 211714 FFWROA VAC161-770-063-121-775-212015- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ROANOKE VA 112 PM EDT TUE APR 21 1992 THE NATIONAL WEATHER SERVICE IN ROANOKE VA HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 415 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL VIRGINIA ...ROANOKE COUNTY AND THE INDEPENDENT CITY OF ...ROANOKE IN SOUTHWEST VIRGINIA ...FLOYD COUNTY...MONTGOMERY COUNTY AND THE INDEPENDENT CITY OF ...SALEM RAINFALL DATA...SPOTTERS REPORTS AND EMERGENCY SERVICES PERSONNEL REPORT THAT MANY SMALL STREAMS IN THE WARNED AREA ARE AT OR ABOVE BANKFULL. THESE STREAMS WILL CONTINUE A RAPID RISE AS AN AREA OF HEAVY RAINFALL MOVES ACROSS THE REGION DURING THE NEXT FEW HOURS. SPECIFICALLY...THE LITTLE RIVER IN THE RINER,VA AREA IN FLOYD COUNTY IS REPORTED OVER ITS BANKS. MEADOWS CREEK ROAD...RT 658 IN FLOYD IS IMPASSABLE. BRUSH CREEK IN FLOYD COUNTY IS ALMOST AT BANKFULL AND RISING RAPIDLY. IN ROANOKE COUNTY...PETERS CREEK IS OVER ITS BANKS AND SOME RESIDENTS ARE BEING ALERTED FOR POSSIBLE EVACUATION. LATEST AUTOMATED RAINFALL GAGES SHOW THE WARNED AREA HAS RECEIVED...ON THE AVERAGE...ABOUT 2 INCHES OF RAIN THE PAST 12 HOURS. SOME LOCATIONS HAVE RECEIVED AS MUCH AS 4 INCHES OF RAIN. WEATHER SERVICE RADAR SHOW RAIN COVERING MOST OF WEST CENTRAL AND SOUTHWEST VIRGINIA. THE HEAVIEST RAIN IS ALONG A BAND EXTENDING FROM BOTETOURT TO ROANOKE INTO PATRICK COUNTIES. THIS HEAVY RAIN IS WORKING ITS WAY ONLY SLOWLY EASTWARD. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. IT'S IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS SHOULD AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS. MOST DEATHS IN FLASH FLOODING 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. END/MCINTOSH
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, Apr 21, 12:39 PM EDT, 33 minutes before
VAZ009-008-212100 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LYNCHBURG VA 1230 PM EDT TUE APR 21 1992 ...A FLASH FLOOD WATCH HAS BEEN ISSUED UNTIL 2 AM WEDNESDAY FOR THE FOLLOWING COUNTIES...AMHERST...BEDFORD...CAMPBELL...APPOMATTOX... PITTSYLVANIA...HALIFAX AND CHARLOTTE AND THE INDEPENDENT CITIES OF LYNCHBURG...DANVILLE...BEDFORD AND SOUTH BOSTON. PEOPLE LIVING IN THE FLASH FLOOD AREAS SHOULD BE ALERT TO THE POSSIBILITY OF RISING STREAMS AND INUNDATED ROADWAYS. BE PREPARED TO MOVE TO HIGHER GROUND IF FLASH FLOODING OCCURS. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL COMMERCIAL RADIO AND TV STATIONS FOR UPDATES. KEEP ALERT AND REPORT ANY FLOODING TO YOUR LOCAL WEATHER OFFICE O!R TO LOCAL LAW ENFORCEMENT FOR RELAY TO THE NATIONAL WEATHER SERVICE. MONROE
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, 10:49 AM EDT | Flash Flood Warning | RNK | Franklin, Patrick | 4 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.