Alert archive / Virginia / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 46, NWS Blacksburg, VA

June 22, 1990Halifax County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Jun 22, 1990, 5:59 PM EDT for Halifax County, Virginia. It was in force for 61 min.

The area

The counties it named.

The facts

Issued
Jun 22, 1990, 5:59 PM EDT (21:59 UTC)
Expired
Jun 22, 1990, 7:00 PM EDT
In force
61 min
Issued by
NWS Blacksburg, VA
Area
Whole counties

County Halifax 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, 10.0 hours before the alert went out and 115 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 1990-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1042 joules per kilogram.LCLLFCEL10008507005003002001001 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 1990-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 111 square meters per square second.193958Sfc1 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
1042 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
1021 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
111 m²/s²
0-3 km storm-relative helicity
174 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KROA 222159
SVRROA
VAC083-222300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ROANOKE VA
559 PM EDT FRI JUN 22 1990
 
THE NATIONAL WEATHER SERVICE IN ROANOKE VAHAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  700 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTH CENTRAL VIRGINIA
 
   ...HALIFAX COUNTY
 
RADAR SHOWED A SEVERE THUNDERSTORM SOUTH OF SOUTH BOSTON MOVING NE 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, Jun 22, 1:34 PM EDT, 4 hours 25 minutes before
VAZ014-009-008-015-016

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VA
120 PM   EDT  FRI JUN 22 1990

...SEVERE THUNDERSTORM WATCH FOR PORTIONS OF VIRGINIA...INCLUDING
CHARLOTTE AND HALIFAX COUNTIES PLUS SOUTH BOSTON UNTIL 700 PM THIS
EVENING...
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH
FOR MUCH OF THE EASTERN THIRD OF VIRGINIA AND CENTRAL THUROUGH
EASTERN SECTIONS OF NORTH CAROLINA.  HALIFAX AND CHARLOTTE COUNTIES
PLUS THE CITY OF SOUTH BOSTON ARE INCLUDED UNDER THE WATCH AREA.

AT 120 PM EDT WEATHER RADAR SHOWS THUNDERSTORMS POISED TO MOVE OUT
OF NORTH CAROLINA INTO THE SOUTHEAST SECTION OF PITTSYLVANIA COUNTY
AND SOUTHWEST HALIFAX COUNTY.  SOME OF THE STORMS IN NORTH CAROLINA
CAUSED SOME DAMAGE EARLIER DURING THEIR PASSAGE SO PERSONS IN THE
NOTED COUNTIES SHOULD STAY ON THE ALERT THE NEXT FEW HOURS.

ELSEWHERE...THUNDERSTORMS ARE DEVELOPING ALONG AN AREA WHICH  OUT OF SOUTHWES
EXTENDS FROM SOUTHWEST VIRGINIA ACROSS THE VIRGINIA COUNTIES
OF GILES...WYTHE...CARROLL AND GRAYSON.  THIS AREA IS MOVING
EAST AT 30 MPH. PERSONS IN THE NEW RIVER VALLEY TO ROANOKE
AREAS SHOULD ALSO BE ALERT THE NEXT FEW MINUTES TO THE THREAT
OF THESE STORMS.

THE NATIONAL WEATHER SERVICE IS CLOSELY MONITORING THIS WEATHER
SITUATION SO STAY TUNED TO NOAA WEATHER COMMERCIAL RADIO/TV
SOURCES FOR UPDATES OR POSSIBLE WARNINGS.
END/MCINTOSH
Special weather statement, Jun 22, 2:13 PM EDT, 3 hours 46 minutes before
VAZALL-222200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VA
208  PM  EDT  FRI JUN 22 1990

...LINE OF THUNDERSTORMS MOVING ACROSS SOUTHWEST VIRGINIA TOWARD
THE ROANOKE VALLEY AREA AND SURROUNDING COUNTIES...
AT 205 PM EDT WEATHER RADIO SHOWED A SOLID LINE OF THUNDERSTORMS
...SOME WITH HEAVY RAIN...EXTENDING OUT OF SOUTHERN WEST VIRGINIA
NEAR BECKLEY SOUTH ACROSS SOUTHWEST VIRGINIA THROUGH THE COUNTIES
OF GILES...CRAIG...MONTGOMERY...FLOYD AND CARROLL. THIS LINE OF
STORMS IS MOVING EAST AT A 40 MPH CLIP.

THESE STORMS WILL BE ACCOMPANIED BY GUSTY WINDS...POSSIBLE HAIL...
DANGEROUS LIGHTNING...AND BRIEF BUT HEAVY DOWNPOURS DURING THEIR
PASSAGE.  THEY SHOULD BE ENTERING ROANOKE COUNTY THE NEXT 15
MINUTES AND PERSONS OUTDOORS...INCLUDING THOSE AT THE SALEM
HORSESHOW...SHOULD MAKE IMMEDIATE PREPARATION TO GET INDOORS.
SOME TREES WERE REPORTED DOWN NEAR PEARISBURG DURING THE PASSAGE
OF THESE STORMS. END/MCINTOSH

The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 22, 2:21 PM EDTSevere Thunderstorm WarningRNKBotetourt, Roanoke69 min
Jun 22, 2:21 PM EDTSevere Thunderstorm WarningRNKFloyd, Montgomery69 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.