Alert archive / Virginia / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 8, NWS Blacksburg, VA

April 30, 1990Pulaski County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Apr 30, 1990, 5:48 PM EDT for Pulaski County, Virginia. It was in force for 57 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Apr 30, 1990, 5:48 PM EDT (21:48 UTC)
Expired
Apr 30, 1990, 6:45 PM EDT
In force
57 min
Issued by
NWS Blacksburg, VA
Area
Whole counties

County Pulaski County, VA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Apr 30, 6:20 PM EDTThunderstorm Wind 0Pulaski, VA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.8 hours before the alert went out and 131 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 12:00Z on 1990-04-30Temperature 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 12:00Z on 1990-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 253 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
NaN m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
253 m²/s²
0-3 km storm-relative helicity
322 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 302149 RRA
SVRROA
VAC155-302245-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROANOKE VA
548 PM EDT MON APR 30 1990
 
THE NATIONAL WEATHER SERVICE IN ROANOKE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  645 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTHWEST VIRGINIA
          ...SOUTHERN PULASKI
 
RADAR INDICATES A SEVERE THUNDERSTORM OVER SOUTHERN PULASKI COUNTY
MOVING SOUTHEAST AT 30 MPH.
 
 
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 ROOM 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 30, 4:47 PM EDT, 1 hour 1 minute before
VAZ008-009-015-016-010000

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VA
445 PM EDT MON APR 30 1990

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR SOUTHWEST..AND PORTIONS
   OF SOUTH CENTRAL VIRGINIA UNTIL 1000 PM TONIGHT...

A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR ALL OF SOUTHWEST...AND
PARTS OF SOUTH CENTRAL VIRGINIA. COUNTIES INCLUDED ARE: GILES...
MONTGOMERY...FLOYD...AND CARROLL...EXTENDING WESTWARD ACROSS THE REST OF
SOUTHWEST VIRGINIA. ALSO INCLUDED IN SOUTH CENTRAL VIRGINIA ARE:
FRANKLIN...PATRICK...HENRY...PITTSYLVANIA...HALIFAX AND CHARLOTTE.

AT 500 PM SCATTERED THUNDERSTORMS WERE MOVING ACROSS EXTREME SOUTHWEST
VIRGINIA. THE STORMS WERE MOVING TO THE EAST AT 30 TO 35 MPH. THESE
STORMS COULD DEVELOP ENOUGH TO PRODUCE DAMAGING WINDS AND LARGE HAIL...
AS THEY MOVE EASTWARD ACROSS THE WATCH AREA.

LISTEN TO NOAA WEATHER RADIO OR YOUR LOCAL NEWS MEDIA FOR FURTHER
UPDATES OR POSSIBLE WARNINGS.

END/dJACKSON

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.