Alert archive / North Carolina / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 52, NWS Blacksburg, VA

July 11, 1990Davidson County, Guilford County, North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 11, 1990, 8:18 PM EDT for Davidson County, Guilford County, North Carolina. 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
Jul 11, 1990, 8:18 PM EDT (00:18 UTC)
Expired
Jul 11, 1990, 9:15 PM EDT
In force
57 min
Issued by
NWS Blacksburg, VA
Area
Whole counties

Counties Davidson County, NC, Guilford County, NC

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
Jul 11, 8:30 PM EDTThunderstorm Wind 0Guilford, NC

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 00:00Z, 0.3 hours before the alert went out and 18 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 00:00Z on 1990-07-12Temperature 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 00:00Z on 1990-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 square meters per square second.1939Sfc1 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
20 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
106 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 KGSO 120018
SVRGSO
NCC081-057-120115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE GREENSBORO NC
818 PM EDT WED JUL 11 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 915 PM EDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES

   IN THE STATE OF NORTH CAROLINA
      SOUTHERN GUILFORD...NORTHEAST DAVIDSON

AT 816 PM RADAR SHOWED A SEVERE THUNDERSTORM IN NORTHEAST DAVIDSON
COUNTnY JUST WEST OF HIGH POINT MOVING EAST AT ABOUT 20 MPH.

IF YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORCED
SHELTER AND PREPARE FOR DAMAGING WINDS..LARGE HAIL..VERY HEAVY
DOWNPOURS AND FREQUENT DEADLY LIGHTNING.

 RBN

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, Jul 11, 2:27 PM EDT, 5 hours 51 minutes before
VAZ008-009-013-014>016-111900-

SPECIAL WEATHER STATMENT
NATIONAL WEATHER SERVICE ROANOKE VA
220 PM EDT WED JUL 11 1990

...THUNDERSTORMS CONTINUE TO FEED ON THE MOIST HUMID AIR...

AT 215 PM EDT VOLENS WEATHER RADAR DETECTED WIDELY SCATTERED
THUNDERSTORMS ACROSS SOUTH CENTRAL AND SOUTHWEST VIRGINIA. THE
STRONGEST STORM WAS MOVING EAST NEAR BOONES MILL IN NORTHERN
FRANKLIN COUNTY. THIS STORM IS TRACKING EASTWARD AT 25 MPH AND
WILL APPROACH THE SMITH MOUNTAIN LAKE AREA BY 300 PM. BOATERS
ON THE LAKE SHOULD SEEK SAFE HARBOR DURING THE PASSAGE OF THESE
STORMS. OTHER STRONG STORM WERE LOCATED NEAR BUFFALO MOUNTAIN IN
SOUTHERN FLOYD COUNTY AND IN WESTERN PATRICK COUNTY.

FREQUENT DANGEROUS LIGHfTNING...SMALL HAIL...STRONG GUSTY WINDS
AND BRIEF BUT VERY HEAVY DOWNPOURS ARE POSSIBLE THIS AFTERNOON.

LISEN NOAA WEATHER RADIO...YOUR LOCAL RADIO OR TV STATION FOR
FURTHER UPDATES OR POSSIBLE WARNINGS.
END/CACCIAPAGLIA
Special weather statement, Jul 11, 3:28 PM EDT, 4 hours 50 minutes before
VAZALL-111925-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VA
320 PM   EST  WED JUL 11 1990

...SEVERVE THUNDERSTORM WATCH COVERS MUCH OF SOUTHWEST AND CENTRAL
   VIRGINIA...

A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED BY THE SEVERE STORMS
CENTER. THE WATCH IS EFFECTIVE FOR THE REMAINDER OF THIS AFTERNOON
AND UNTIL 10 PM THIS EVENING. THE COUNTIES INCLUDED IN THE WATCH AREA:

BOTETOURT...CRAIG...FLOYD...FRANKLIN...HENRY...MONTGOMERY...PATRICK
AND ROANOKE. ALSO INCLUDED ARE THE INDEPENDENT CITIES OF SALEM...
ROANOKE...AND MARTINSVILLE.

PEOPLE IN THE ABOVE MENTIONED COUNTIES SHOULD BE ON THE LOOKOUT
FOR SEVEREe WEATHER. A MAJOR CONCERN IS LARGE HAIL AND DAMAGING
WINDS.
END/CACCIAPAGLIA
Special weather statement, Jul 11, 5:37 PM EDT, 2 hours 41 minutes before
VAZALL-112300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VA
535 PM EDT WED JUL 11 1990

...SEVERVE THUNDERSTORM WATCH CONTINUES FOR MUCH OF SOUTHWEST AND
   CENTRAL VIRGINIA UNTIL 10 PM EDT...

A SEVERE THUNDERSTORM WATCH CONTINUES UNTIL 10 PM FOR A LARGE PART OF
SOUTHWEST AND CENTRAL VIRGINIA. IN THE ROANOKE AREA OF RESPONSIBILITY
THE WATCH EXTENDS FROM BOTETOURT...CRAIG...FLOYD AND CARROLL COUNTIES
EASTWARD THROUGH ROANOKE AND LYNCHBURG INTO CENTRAL VIRGINIA.

AT 530 PM RADAR SHOWS MOST OF THE STRONG THUNDERSTORM ACTIVITY IS NOW
IN NORTHERN THROUGH EASTERN VIRGINIA. ONE THUNDERSTORM WITH HEAVY RAIN
WAS INDICATED OVER SOUTHERN HALIFAX COUNTY. WHILE THERE ARE NO STORMS
PRESENTLY IN THE ROANOKE AREA OF RESPONSIBILITY...CONDITIONS REMAIN
FAVORABLE FOR MORE THUNDERSTORM DEVELOPMENT. PEOPLE IN THE WATCH AREA
IN SOUTHWEST VIRGINIA SHOULD REMAIN ALERT FOR THREATENING WEATHER THIS
EVENING.     END/JACKSON
Special weather statement, Jul 11, 7:42 PM EDT, 36 minutes before
VAZALL-120200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VA
740 PM EDT WED JUL 11 1990

...SEVERE THUNDERSTORM WATCH CONTINUES FOR MUCH OF SOUTHWEST AND
   CENTRAL VIRGINIA UNTIL 10 PM EDT...

A SEVERE THUNDERSTORM WATCH CONTINUES UNTIL 10 PM FOR A LARGE PART OF
SOUTHWEST AND CENTRAL VIRGINIA. IN THE ROANOKE AREA OF RESPONSIBILITY
THE WATCH EXTENDS FROM BOTETOURT...CRAIG...FLOYD AND CARROLL COUNTIES
EASTWARD THROUGH THE ROANOKE...MARTINSVILLE...DANVILLE AND LYNCHBURG
AREAS INTO CENTRAL AND EASTERN VIRGINIA.

AT 730 PM RADAR SHOWS THE STRONG THUNDERSTORM ACTIVITY TO BE OVER
EASTERN VIRGINIA. ONE ISOLATED THUNDERSTORM WAS OVER EXTREME SOUTHWEST
PATRICK COUNTY IN SOUTHWEST VIRGINIA. CONDITIONS REMAIN FAVORABLE FOR
THUNDERSTORMS TO REDEVELOP OVER SOUTHWEST AND WEST CENTRAL VIRGINIA
THIS EVENING.

THE WEATHER SERVICE OFFICE IN ROANOKE IS MONITORING THE SITUATION
CLOSELY...AND WILL ISSUE FURTHER STATEMENTS OR POSSIBLE WEARNINGS IF
THUNDERSTORMS DO REDEVELOP OR MOVE INTO SOUTHWEST VIRGINIA. LISTEN TO
NOAA WEATHER RADIO OR YOUR LOCAL NEWS MEDIA FOR LATER UPDATES.
END/JACKSON

Nearby

Severe Thunderstorm Warnings in North Carolina, 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.