Alert archive / North Carolina / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 99, NWS Greenville-Spartanburg, SC

July 25, 1989Henderson County, Polk County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 25, 1989, 4:32 PM EDT for Henderson County, Polk County, North Carolina. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Jul 25, 1989, 4:32 PM EDT (20:32 UTC)
Expired
Jul 25, 1989, 5:30 PM EDT
In force
58 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Whole counties

Counties Henderson County, NC, 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, 8.5 hours before the alert went out and 175 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 1989-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 760 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 1989-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
760 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
1077 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
27 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 4:24 PM EDTSevere Thunderstorm WarningGSPBuncombe66 min
Jul 25, 6:32 PM EDTSevere Thunderstorm WarningGSPCleveland, Lincoln43 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 1989Every severe thunderstorm warning in 1989

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.