Alert archive / North Carolina / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 68, NWS Greenville-Spartanburg, SC

June 9, 1990Polk County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 9, 1990, 2:26 PM EDT for Polk County, North Carolina. It was in force for 49 min.

The area

The counties it named.

The facts

Issued
Jun 9, 1990, 2:26 PM EDT (18:26 UTC)
Expired
Jun 9, 1990, 3:15 PM EDT
In force
49 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Whole counties

County Polk 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

Athens Municipal, GA (KAHN), launched 12:00Z, 6.4 hours before the alert went out and 180 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, Athens Municipal, GA at 12:00Z on 1990-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 312 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, Athens Municipal, GA at 12:00Z on 1990-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -54 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
312 J/kg
Mixed-layer CIN
-162 J/kg
Mixed-layer LCL
870 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
-54 m²/s²
0-3 km storm-relative helicity
7 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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, Jun 9, 1:28 PM EDT, 58 minutes before
NCZ007-009-010-011-012-013-091900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ASHEVILLE NC
128 PM EDT SAT JUN 9 1989

...THUNDERSTORMS ON THE INCREASE OVER WESTERN NORTH CAROLINA...

AT 125 PM EDT WEATHER SERVICE RADAR INDICATED THUNDERSTORMS ON THE
INCREASE ACROSS THE MOUNTAINS OF WESTERN NORTH CAROLINA. THE STRONGEST
STORMS WERE JUST SOUTHEAST OF THE ASHEVILLE AIRPORT IN HENDERSON COUNTY
AND NEAR ANDREWS IN CHEROKEE COUNTY. MOVEMENT WAS TOWARD THE EAST AT
APPROXIMATELY 10 MPH.

STRONG GUSTY WINDS AND DANGEROUS LIGHTNING ARE ASSOCIATED WITH THESE
STORMS IN ADDITION TO THE HEAVY DOWNPOURS AND POSSIBLY SOME SMALL HAIL.
IF THREATENING WEATHER APPROACHES SEEK SAFE SHELTER IMMEDIATELY.

STAY TUNED TO LOCAL TV...RADIO OR NOAA WEATHER RADIO FOR LATER
STATEMENTS AND POSSIBLE WARNINGS.
GRC
Special weather statement, Jun 9, 2:03 PM EDT, 23 minutes before
SCZ001>004-091900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG SC
200 PM EDT SAT JUN 09 1990

...THUNDERSTORMS DEVELOPING OVER THE UPSTATE OF SOUTH
CAROLINA AND WESTERN NORTH CAROLINA...

THE ATMOSPHERE OVER THE CAROLINAS IS VERY WARM AND MOIST THIS
AFTERNOON. THUNDERSTORMS ARE FORMING OVER THE MOUNTAINS AND
FOOTHILLS OF THE CAROLINAS. THE STORMS ARE MOVING SLOWLY TO THE EAST
SOUTHEAST. THE STRONGEST STORM IN THE UPSTATE AREA WAS IN CENTRAL
OCONEE AND WEATERN PICKEN COUNTIES.

THUNDERSTORMS MAY PRODUCE HEAVY RAIN...STRONG GUSTY WIND FREQUENT
LIGHTING AND POSSIBLY SMALL HAIL. LISTEN FOR LATER STATEMENTS AND
POSSIBLE WARNINGS.

VALVERDE

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 8, 8:46 PM EDTSevere Thunderstorm WarningGSPBuncombe29 min
Jun 9, 2:58 PM EDTSevere Thunderstorm WarningGSPCleveland32 min
Jun 9, 3:21 PM EDTSevere Thunderstorm WarningGSPCherokee69 min
Jun 9, 4:18 PM EDTSevere Thunderstorm WarningGSPSpartanburg57 min
Jun 9, 5:07 PM EDTSevere Thunderstorm WarningGSPAnderson, Greenville, Laurens53 min
Jun 9, 6:24 PM EDTSevere Thunderstorm WarningGSPAnderson, Oconee, Pickens66 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.