Alert archive / South Dakota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 56, NWS Aberdeen, SD

July 7, 1994Grant County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 7, 1994, 12:26 AM CDT for Grant County, South Dakota. It was in force for 49 min.

The area

The counties it named.

The facts

Issued
Jul 7, 1994, 12:26 AM CDT (05:26 UTC)
Expired
Jul 7, 1994, 1:15 AM CDT
In force
49 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County Grant County, SD

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 5.4 hours before the alert went out and 132 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 1994-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2491 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 1994-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
2491 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1107 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
1.1
Supercell composite
6.4

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 6, 7:08 PM CDTSevere Thunderstorm WarningABRHughes, Stanley67 min
Jul 6, 7:58 PM CDTSevere Thunderstorm WarningABRSpink62 min
Jul 6, 8:52 PM CDTTornado WarningABRSpink38 min
Jul 6, 9:05 PM CDTSevere Thunderstorm WarningABRBuffalo, Lyman40 min
Jul 6, 9:05 PM CDTSevere Thunderstorm WarningABRHand40 min
Jul 6, 11:42 PM CDTSevere Thunderstorm WarningABRSpink63 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1994Every severe thunderstorm warning in 1994

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.