Alert archive / South Dakota / Tornado Warnings in 1993

Tornado Warning 15, NWS Aberdeen, SD

July 7, 1993Dewey County, South Dakota

NWS Aberdeen, SD issued this tornado warning at Jul 7, 1993, 7:06 PM MDT for Dewey County, South Dakota. It was in force for 39 min.

The area

The counties it named.

The facts

Issued
Jul 7, 1993, 7:06 PM MDT (01:06 UTC)
Expired
Jul 7, 1993, 7:45 PM MDT
In force
39 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County Dewey County, SD

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 1.1 hours before the alert went out and 196 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, Aberdeen, SD at 00:00Z on 1993-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 513 joules per kilogram.LCLEL10008507005003002001001 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, Aberdeen, SD at 00:00Z on 1993-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 57 square meters per square second.1939587897117Sfc1 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
513 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
963 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
57 m²/s²
0-3 km storm-relative helicity
156 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.6

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
Jul 8, 12:36 PM MDTSevere Thunderstorm WarningABRDewey69 min
Jul 8, 1:02 PM MDTSevere Thunderstorm WarningABRPotter58 min
Jul 8, 1:27 PM MDTSevere Thunderstorm WarningABRPotter63 min
Jul 8, 2:38 PM MDTSevere Thunderstorm WarningABRBrown67 min

Nearby

Tornado Warnings in South Dakota, 1993Every tornado warning in 1993Tornadoes in 1993

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.