Alert archive / South Dakota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 73, NWS Aberdeen, SD

July 11, 1994Day County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 11, 1994, 1:30 AM CDT for Day County, South Dakota. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
Jul 11, 1994, 1:30 AM CDT (06:30 UTC)
Expired
Jul 11, 1994, 2:00 AM CDT
In force
30 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County Day County, SD

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 6.5 hours before the alert went out and 81 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 1994-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2275 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 00:00Z on 1994-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 109 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
2275 J/kg
Mixed-layer CIN
-211 J/kg
Mixed-layer LCL
1048 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
109 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

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 10, 8:59 PM CDTSevere Thunderstorm WarningABRCorson61 min
Jul 10, 9:34 PM CDTSevere Thunderstorm WarningABRDewey56 min
Jul 10, 10:00 PM CDTSevere Thunderstorm WarningABRCorson60 min
Jul 10, 10:30 PM CDTSevere Thunderstorm WarningABRPotter, Walworth60 min
Jul 10, 10:30 PM CDTSevere Thunderstorm WarningABRCampbell60 min
Jul 10, 10:48 PM CDTSevere Thunderstorm WarningABRSully42 min
Jul 10, 11:05 PM CDTSevere Thunderstorm WarningABRHand, Hyde55 min
Jul 10, 11:05 PM CDTSevere Thunderstorm WarningABRHughes, Stanley55 min
Jul 10, 11:31 PM CDTSevere Thunderstorm WarningABRBeadle, Jerauld, Sanborn59 min
Jul 10, 11:31 PM CDTSevere Thunderstorm WarningABRBuffalo, Lyman59 min
Jul 11, 12:11 AM CDTSevere Thunderstorm WarningABRHand, Hyde49 min
Jul 11, 12:15 AM CDTSevere Thunderstorm WarningABRBrown, Edmunds, Faulk, Spink60 min
Jul 11, 12:30 AM CDTSevere Thunderstorm WarningABRBeadle60 min
Jul 11, 1:10 AM CDTSevere Thunderstorm WarningABRClark65 min
Jul 11, 1:15 AM CDTSevere Thunderstorm WarningABRBrown, Spink30 min
Jul 11, 1:27 AM CDTSevere Thunderstorm WarningABRCodington, Hamlin63 min
Jul 11, 1:43 AM CDTSevere Thunderstorm WarningABRDeuel, Grant62 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.