Alert archive / Virginia / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 6, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Apr 2, 1990, 4:17 PM EDT for Roanoke County, Virginia. It was in force for 58 min.
The area
The counties it named.
The facts
- Issued
- Apr 2, 1990, 4:17 PM EDT (20:17 UTC)
- Expired
- Apr 2, 1990, 5:15 PM EDT
- In force
- 58 min
- Issued by
- NWS Blacksburg, VA
- Area
- Whole counties
County Roanoke County, VA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.3 hours before the alert went out and 126 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
- 5 J/kg
- Mixed-layer CIN
- -95 J/kg
- Mixed-layer LCL
- 1369 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KROA 022017 RRA
SVRROA
VAC161-022115-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROANOKE VA
417 PM EDT MON APR 2 1990
THE NATIONAL WEATHER SERVICE IN ROANOKE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 515 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTHWEST VIRGINIA
...ROANOKE
AT 415 PM EDT WEATHER RADAR SHOWED A THUNDERSTORM OVER NORTHWEST
ROANOKE COUNTY. THIS STORM IS MOVING TO THE EAST AT 25 MPH AND IT
APPEARS TO HAVE THE POTENTIAL TO BE SEVERE.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOGM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.What forecasters said that day
The local office's own words before this severe thunderstorm 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 2, 12:04 PM EDT, 4 hours 13 minutes before
VAZALL-021630- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROANOKE VA 740 PM EDT SUN APR 1 1990 THUNDERSTORMS DEVELOPING OVER SOUTHWESTERN VIRGINIA. AT 1145 AM EDT RADAR SHOWED SHOWERS AND THUNDERSTORMS IN BOTETOURT COUNTY MOVING EAST AT 30 MPH. THESE THUNDERSTORMS COULD PRODUCE STRONG GUSTY WIND AS THEY MOVE INTO BEDFORD COUNTY IN THE BIG ISLAND AREA WITHIN THE HOUR. CG
Special weather statement, Apr 2, 1:40 PM EDT, 2 hours 37 minutes before
VAZALL-021830- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROANOKE VA 130 PM EDT SUN APR 1 1990 THUNDERSTORMS DEVELOPING OVER SOUTHWESTERN VIRGINIA. AT 1305 PM EDT RADAR SHOWED AN AREA OF THUNDaERSTORMS MOVING INTO FRANKLIN COUNTY VIRGINIA. THESE STORM ARE MOVING EAST AT 35 MPH. PERSONS IN THE PATH OF THESE STORMS SHOULD BE ON THE LOOKOUT FOR STRONG GUSTY WINDS DANGEROUS LIGHTNING AND POSSIBLE HAIL. CG
Special weather statement, Apr 2, 1:42 PM EDT, 2 hours 35 minutes before
VAZALL-021830- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROANOKE VA 130 PM EDT SUN APR 1 1990 THUNDERSTORMS DEVELOPING OVER SOUTHWESTERN VIRGINIA. AT 130 PM EDT RADAR SHOWED AN AREA OF THcUNDERSTORMS MOVING INTO FRANKLIN COUNTY VIRGINIA. THESE STORM ARE MOVING EAST AT 35 MPH. PERSONS IN THE PATH OF THESE STORMS SHOULD BE ON THE LOOKOUT FOR STRONG GUSTY WINDS DANGEROUS LIGHTNING AND POSSIBLE HAIL. CG
Special weather statement, Apr 2, 2:42 PM EDT, 1 hour 35 minutes before
VAZ-009-021840 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LYNCHBURG VA 240 PM EDT MON APR 2 1990 ...POSSIBLE HAIL ENTERING NORTHERN APPOMATTOX COUNTY... NATIONAL WEATHER SERVICE RADAR INDICATES THUNDERSTORMS ENTERING NORTHERN APPOMATTOX COUNTY IN VIRGINIA MAY CONTAIN HAIL. THIS STORM IS MOVING EAST ABOUT 30 MPH. HUDGINS
Special weather statement, Apr 2, 2:47 PM EDT, 1 hour 30 minutes before
VAZ008-009-013-014-015-016-0030000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ROANOKE VA 230 PM EDT MON APR 2 1990 ...SEVERE THUNDERSTORM WATCH OVER MUCH OF SOUTHWEST VIRGINIA INCLUDING THE ROANOKE VALLEY AREA AND NEARBY COUNTIES FROM 230 PM UNTIL 800 PM THIS AFTERNOON AND EVENING... THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH WHICH COVERS A LARGE PORTION OF VIRGINIA. ALL COUNTIES NORMALLY SERVED BY THE ROANOKE WEATHER OFFICE ARE INCLUDED IN THE WATCH AREA...WHICH EXTENDS ON ACROSS MUCH OF VIRGINIA. THE COUNTIES COVERED ARE BLAND...GILES...CRAIG...WYTHE...PULASKI... MONTGOMERY...ROANOKE...BOTETOURT...GRAYSON...CARROLL...FLOYD... PATRICK...FRANKLIN...AND HENRY...PLUS ASSOCIATED INDEPENDENT CITIES. RADAR SHOWS A LINE OF SHOWERS OVER EAST SECTIONS OF WEST VIRGINIA. THE LINE EXTENDS SOUTHWARD INTO SOUTHWEST VIRGINIA WELL WEST OF THE ROANOKE AREA. THIS LINE SHOULD BE SWEEPING ACROSS THE ROANOKE VALLEY AND SURROUNDING COUNTIES DURING THE REMAINDER OF THE AFTERNOON. REMEMBER...SEVERE THUNDERSTORMS CONTAIN EITHER WINDS OF 55 MPH OR GREATER OR HAIL 3/4 INCHES OR GREATER...OR BOTH. SINCE HEAVY DOWNPOURS ALSO ACCOMPANY SUCH STORMS...REMEMBER ALSO THAT MOST FLASH FLOOD DEATHS OCCUR IN VEHICLES IN WHICH THE DRIVER HAS ATTEMPTED TO CROSS ROADWAYS UNDER WHAT WAS PRESUMED TO BE SHALLOW WATER. MCINTOSH
Special weather statement, Apr 2, 4:13 PM EDT, 4 minutes before
VAZ009-008-022010- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LYNCHBURG VA 410 PM EDT MON APR 2 1990 ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR CENTRAL VIRGINIA UNTIL 800 PM EDT... AT 400 PM EDT..A THUNDERSTORM IS JUST LEAVING EASTERN APPOMATTOX COUNTY. ALTHOUGH THE SOUTHERN FOOTHILLS WILL BE RELATIVELY QUIET FOR THE NEXT ONE TO TWO HOURS..A SECOND LINE OF THUNDERSTORMS IS DEVELOPING OVER THE SHENANDOAH VALLEY AND MOVING EAST 8ABOUT 30 MPH. REMAIN ALERT FOR THREATENING CONDITIONS AS THESE STORMS APPROACH CENTRAL VIRGINIA. HUDGINS
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 2:59 PM EDT | Severe Thunderstorm Warning | RNK | Appomattox | 61 min |
| Apr 2, 5:45 PM EDT | Severe Thunderstorm Warning | RNK | Campbell | 30 min |
Nearby
Severe Thunderstorm Warnings in Virginia, 1990Every severe thunderstorm warning in 1990
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.