Alert archive / Virginia / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 5, NWS Blacksburg, VA
NWS Blacksburg, VA issued this severe thunderstorm warning at Apr 2, 1990, 2:59 PM EDT for Appomattox County, Virginia. It was in force for 61 min.
The area
The counties it named.
The facts
- Issued
- Apr 2, 1990, 2:59 PM EDT (18:59 UTC)
- Expired
- Apr 2, 1990, 4:00 PM EDT
- In force
- 61 min
- Issued by
- NWS Blacksburg, VA
- Area
- Whole counties
County Appomattox 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, 7.0 hours before the alert went out and 173 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
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, 2 hours 55 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, 1 hour 19 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, 1 hour 17 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, 17 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, 12 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
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 2, 4:17 PM EDT | Severe Thunderstorm Warning | RNK | Roanoke | 58 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.