Alert archive / South Dakota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 91, NWS Aberdeen, SD

July 18, 1994Beadle County, Hand County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 18, 1994, 8:48 AM CDT for Beadle County, Hand County, South Dakota. It was in force for 42 min.

The area

The counties it named.

The facts

Issued
Jul 18, 1994, 8:48 AM CDT (13:48 UTC)
Expired
Jul 18, 1994, 9:30 AM CDT
In force
42 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

Counties Beadle County, SD, Hand County, SD

The nearest sounding before it

Aberdeen, SD (KHON), launched 12:00Z, 1.8 hours before the alert went out and 50 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 12:00Z on 1994-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1907 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, Aberdeen, SD at 12:00Z on 1994-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 159 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
1907 J/kg
Mixed-layer CIN
-113 J/kg
Mixed-layer LCL
1147 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
159 m²/s²
0-3 km storm-relative helicity
194 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.7

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 18, 5:39 AM CDTSevere Thunderstorm WarningABRSully36 min
Jul 18, 5:39 AM CDTSevere Thunderstorm WarningABRHyde51 min
Jul 18, 6:38 AM CDTSevere Thunderstorm WarningABRHand, Hyde52 min
Jul 18, 7:36 AM CDTSevere Thunderstorm WarningABRHyde34 min
Jul 18, 8:05 AM CDTSevere Thunderstorm WarningABRHand40 min
Jul 18, 3:12 PM CDTSevere Thunderstorm WarningABRDeuel18 min
Jul 18, 5:40 PM CDTSevere Thunderstorm WarningABRCampbell, Corson65 min
Jul 18, 5:57 PM CDTSevere Thunderstorm WarningABRDewey63 min
Jul 18, 6:27 PM CDTSevere Thunderstorm WarningABRCampbell63 min
Jul 18, 6:34 PM CDTSevere Thunderstorm WarningABRSully41 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.