Alert archive / South Carolina / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 105, NWS Atlanta, GA

June 17, 1989Allendale County, Barnwell County, South Carolina

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 17, 1989, 1:18 PM EDT for Allendale County, Barnwell County, South Carolina. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
Jun 17, 1989, 1:18 PM EDT (17:18 UTC)
Expired
Jun 17, 1989, 2:00 PM EDT
In force
42 min
Issued by
NWS Atlanta, GA
Area
Whole counties

Counties Allendale County, SC, Barnwell County, SC

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, 5.3 hours before the alert went out and 199 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 1989-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 28 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 1989-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 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
28 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
680 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
125 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.

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 17, 12:23 PM EDTTornado WarningFFCJenkins37 min
Jun 17, 1:18 PM EDTSevere Thunderstorm WarningFFCScreven42 min
Jun 17, 12:42 PM EDTSevere Thunderstorm WarningFFCAiken, Barnwell48 min

Nearby

Severe Thunderstorm Warnings in South 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.