Alert archive / South Dakota / Tornado Warnings in 1991

Tornado Warning 6, NWS Aberdeen, SD

May 30, 1991Hughes County, Sully County, South Dakota

NWS Aberdeen, SD issued this tornado warning at May 30, 1991, 10:02 PM CDT for Hughes County, Sully County, South Dakota. It was in force for 28 min.

The area

The counties it named.

The facts

Issued
May 30, 1991, 10:02 PM CDT (03:02 UTC)
Expired
May 30, 1991, 10:30 PM CDT
In force
28 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

Counties Hughes County, SD, Sully County, SD

The nearest sounding before it

Rapid City, SD (KRAP), launched 00:00Z, 3.0 hours before the alert went out and 230 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, Rapid City, SD at 00:00Z on 1991-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1500 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, Rapid City, SD at 00:00Z on 1991-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 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
1500 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
1481 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
171 m²/s²
Significant tornado parameter
0.5
Supercell composite
8.1

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 Aberdeen, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 30, 9:12 PM CDTSevere Thunderstorm WarningABRHughes, Sully63 min
May 30, 10:33 PM CDTSevere Thunderstorm WarningABRSully42 min
May 31, 3:18 AM CDTSevere Thunderstorm WarningABRMiner57 min
May 31, 4:16 AM CDTSevere Thunderstorm WarningABRCodington59 min

Nearby

Tornado Warnings in South Dakota, 1991Every tornado warning in 1991Tornadoes in 1991

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.