Alert archive / North Carolina / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 39, NWS Blacksburg, VA

June 9, 1990Alamance County, North Carolina

NWS Blacksburg, VA issued this severe thunderstorm warning at Jun 9, 1990, 9:17 PM EDT for Alamance County, North Carolina. It was in force for 28 min.

The area

The counties it named.

The facts

Issued
Jun 9, 1990, 9:17 PM EDT (01:17 UTC)
Expired
Jun 9, 1990, 9:45 PM EDT
In force
28 min
Issued by
NWS Blacksburg, VA
Area
Whole counties

County Alamance County, NC

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 00:00Z, 1.3 hours before the alert went out and 45 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 1990-06-10Temperature 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 1990-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 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
19 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KGSO 100117 RRA
SVRGSO
NCC001-100145-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING 
NATIONAL WEATHER SERVICE GREENSBORO NC
917 PM EDT SAT JUN 9 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 945 PM EDT FOR PEOPLE IN THE FOLLOWING 
COUNTY

   IN THE STATE OF NORTH CAROLINA
      ALAMANCE

AT 915 PM RADAR SHOWED A SEVERE THUNDERSTORM JUST NORTH OF UNION
RIDGE IN NORTHERN ALAMANCE COUNTY OF THE NOR6THWEST PIEDMONT.
MOVEMENT WAS TO THE EAST AT 15 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.

 GR

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 9, 3:34 PM EDT, 5 hours 43 minutes before
VAZ013-014-016-091900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VA
330 PM EDT SAT JUN 9 1990

...SHOWERS AND THUNDERSTORMS ARE DEVELOPING OVER THE SOUTHWESTERN
MOUNTAINS...

AT 330 PM EDT RADAR INDICATED A LARGE AREA OF SHOWERS AND
THUNDERSTORMS OVER THE COUNTIES OF BLAND AND WYTHE IN SOUTHWESTERN
VIRGINIA..THIS AREA IS MOVING TOWARDS THE EAST AT AROUND 30 MPH.

THESE STORMS ARE EXPECTED TO MOVE INTO PULASKI COUNTY SHORTLY.

PEOPLE IN THESE COUNTIES CAN EXPECT SOME STRONG GUSTY WIND
HEAVY DOWNPOURS DANGEROUS LIGHTNING AND SOME HAIL.
CG
Special weather statement, Jun 9, 4:05 PM EDT, 5 hours 12 minutes before
VAZALL-092100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VA
405 PM EDT SAT JUN 9 1990

...SHOWERS AND THUNDERSTORMS DEVELOPING AND MOVING ACROSS SOUTHWEST
   VIRGINIA...

AT 400 PM EDT RADAR SHOWED SCATTERED THUNDERSTORMS WITH VERY HEAVY RAIN
OVER MONTGOMERY COUNTY...AND EXTENDING INTO SOUTHERN CRAIG COUNTY. THESE
STORMS ARE MOVING TO THE EAST AT ABOUT 30 MPH...AND WILL BE MOVING INTO
ROANOKE...FLOYD...AND FRANKLIN COUNTIES WITHIN THE HOUR.

THESE STORMS WILL LIKELY PRODUCE STRONG GUSTY WINDS...BRIEF HEAVY
DOWNPOURS...AND DANGEROUS LIGHTNING. THEY MAY ALSO HAVE SOME HAIL.
PEOPLE IN THESE COUNTIES SHOULD STAY ALERT TO THE WEATHER...AND SEEK
SHELTER IF THREATENING WEATHER APPROACHES.
END/JJ
Special weather statement, Jun 9, 4:12 PM EDT, 5 hours 5 minutes before
VAZ009-092040-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LYNCHBURG VA
310 PM EDT SAT JUN 9 1990

AT 310 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATES A LARGE
THUNDERSTORM ENTERING NORTHWEST AMHERST COUNTY VIRGINIA MOVING
EAST ABOUT 30 MPH. THIS STORM WILL PRODUCE HEAVY DOWNPOURS AND
POSSIBLY HAIL AS IT MOVES EASTWARD ACROSS NORTHERN AMHERST COUNTY
DURING THE NEXT HALF HOUR.

HUDGINS
Special weather statement, Jun 9, 4:36 PM EDT, 4 hours 41 minutes before
VAZALL-092200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VA
435 PM EDT SAT JUN 9 1990

...SEVERE THUNDERSTORM WATCH FOR SOUTHWEST AND WEST CENTRAL VIRGINIA...

A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED EFFECTIVE UNTIL 1100 PM FOR
ALL OF SOUTHWEST...AND PART OF WEST CENTRAL VIRGINIA. THE WATCH AREA
COVERS AUGUSTA..ROCKBRIDGE..BOTETOURT..ROANOKE..FLOYD AND CARROLL
COUNTIES...AND EXTENDING WESTWARD ACROSS THE REST OF SOUTHWEST VIRGINIA.

AT 430 PM RADAR INDICATED A CLUSTER OF THUNDERSTORMS WITH VERY HEAVY
RAIN OVER SOUTHERN CRAIG...NORTHERN ROANOKE...AND SOUTHERN BOTETOURT
COUNTIES. THERE WAS ALSO SOME THUNDERSTORMS WITH VERY HEAVY RAIN
INDICATED OVER AMHERST COUNTY. MOVEMENT OF THE STORMS WAS TO THE
NORTHEAST AT ABOUT 30 MPH.

PEOPLE IN THE WATCH AREA SHOULD KEEP ANEYE OUT FOR THREATENING WEATHER.
BE PREPARED TO TAKE SHELTER WHEN THREATENING WEATHER APPROACHES.
A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE SUCH THAT THESE
THUNDERSTORMS COULD PRODUCE DAMAGING WINDS OR LARGE HAIL. LISTEN TO
RADIO OR TV FOR FURTHER STATEMENTS OR POSSIBLE WARNINGS.
END/JJ
Special weather statement, Jun 9, 5:24 PM EDT, 3 hours 53 minutes before
VAZALL-092300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VA
520 PM EDT SAT JUN 9 1990

...SEVERE THUNDERSTORM WATCH MOST OF VIRGINIA UNTIL 1100 PM...

A SEVERE THUNDERSTORM WATCH NOW COVERS ALL OF VIRGINIA EXCEPT FOR
SOUTHEAST VIRGINIA. IT INCLUDES ALL OF THE COUNTIES AND CITIES IN THE
ROANOKE AND LYNCHBURG AREAS OF RESPONSIBILITY.

AT 415 PM RADAR WAS DETECTING A BAND OF THUNDERSTORMS WITH HEAVY RAIN
THAT EXTENDED ACROSS CENTRAL VIRGINIA FROM NELSON AND AMHERST COUNTIES..
SOUTHWESTWARD THROUGH BEDFORD..FRANKLIN AND PATRICK COUNTIES. ANOTHER
BAND OF THUNDERSTORMS WITH HEAVY RAIN WAS OVER THE WEST CENTRAL
HIGHLANDS OF VIRGINIA OVER BATH AND ALLEGHENY COUNTIES. MOVEMENT OF THE
INDIVIDUAL STORMS WAS TO THE EAST AT 30 MPH...WHILE THE BANDS APPEARED
TO BE MOVING TO THE SOUTHEAST.

PEOPLE IN THE WATCH AREA ARE URGED TO REMAIN ALERT TO THE WEATHER. NO
SEVERE WEATHER HAS BEEN REPORTED TO THE ROANOKE WEATHER OFFICE YET...
1BUT THESE STORMS WILL PRODUCE VERY HEAVY RAIN..STRONG GUSTY WINDS..
AND DANGEROUS LIGHTNING. THEY MAY ALSO PRODUCE DAMAGING WIND AND LARGE
HAIL. IF THREATENING WEATHER APPROACHES...SEEK SAFE SHELTER IMMEDIATELY.
END/JJ
Special weather statement, Jun 9, 9:16 PM EDT, 1 minute before
VAZALL-100300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROANOKE VA
915 PM EDT SAT JUN 9 1990

...SEVERE THUNDERSTORM WATCH FOR MOST OF VIRGINIA UNTIL 1100 PM...
...FLASH FLOOD WATCH THROUGH 3 AM SUNDAY MORNING FOR SOUTHWEST
   VIRGINIA...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR ALL OF SOUTHWEST AND
CENTRAL VIRGINIA UNTIL 1100 PM. A FLASH FLOOD WATCH HAS NOW BEEN ISSUED
FOR ALL OF SOUTHWEST VIRGINIA FROM GILES...MONTGOMERY...FLOYD...AND
CARROLL COUNTIES EXTENDING WESTWARD ACROSS THE REST OF SOUTHWEST
VIRGINIA.

A FLASH FLOOD WARNING FOR HENRY COUNTY EXPIRES AT 915 PM. THE SHERIFF
REPORTS TAHT FLOODING CONTINUES...PARTICULARLY IN THE BASSETT AREA.
HOWEVER...THE FLASH FLOOD WARNING WAS ALLOWED TO EXPIRE AS THE HEAVY
RAIN STOPPED FALLING OVER HENRY COUNTY OVER AN HOUR AGO...AND THE
CREEKS AND SMALL STREAMS SHOULD HAVE CRESTED. IT WILL BE AT LEAST A
COUPLE OF HOURS BEFORE THE FLOOD WATERS COMPLETELY RECEDE.

AT 905 PM RADAR SHOWED THUNDERSTORMS WITH VERY HEAVY RAIN MOVING ACROSS
BEDFORD COUNTY. THESE WILL LIKELY CAUSE SOME FLOODING OF LOW LYING AND
URBAN AREAS DURING THE NEXT COUPLE OF HOURS. HEAVY RAIN IS ALSO
INDICATED OVER THE CITY OF LYNCHBURG...WHICH COULD CAUSE SOME STREET
FLOODING THE NEXT HOUR OR SO.

THE FLASH FLOOD WATCH IN SOUTHWEST VIRGINIA HAS BEEN ISSUED BECAUSE
A COLD FRONT IN CENTRAL KENTUCKY WILL PASS THROUGH SOUTHWEST VIRGINIA
LATE TONIGHT...AND SHOWERS AND THUNDERSTORMS ALONG THE FpRONT ARE DUMPING
SOME VERY HEAVY RAIN IN WEST VIRGINIA. THIS WILL HAVE TO BE WATCHED
CLOSELY LATE TONIGHT...ESPECIALLY FOR THOS AREAS THAT HAVE ALREADY
GOTTEN SOME HEAVY RAIN THIS EVENING.
END/JJ

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 9, 8:33 PM EDTSevere Thunderstorm WarningRNKCaswell, Rockingham42 min

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; the sounding from the Mesonet's radiosonde archive.