Alert archive / South Dakota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 94, NWS Aberdeen, SD

July 18, 1994Dewey County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 18, 1994, 4:57 PM MDT for Dewey County, South Dakota. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
Jul 18, 1994, 4:57 PM MDT (22:57 UTC)
Expired
Jul 18, 1994, 6:00 PM MDT
In force
63 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County Dewey County, SD

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 11.0 hours before the alert went out and 180 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, Bismarck Municip, ND at 12:00Z on 1994-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1279 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, Bismarck Municip, ND at 12:00Z on 1994-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 276 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
1279 J/kg
Mixed-layer CIN
-252 J/kg
Mixed-layer LCL
1478 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
276 m²/s²
0-3 km storm-relative helicity
288 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.4

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 18, 4:39 AM MDTSevere Thunderstorm WarningABRSully36 min
Jul 18, 4:39 AM MDTSevere Thunderstorm WarningABRHyde51 min
Jul 18, 5:38 AM MDTSevere Thunderstorm WarningABRHand, Hyde52 min
Jul 18, 6:36 AM MDTSevere Thunderstorm WarningABRHyde34 min
Jul 18, 7:05 AM MDTSevere Thunderstorm WarningABRHand40 min
Jul 18, 7:48 AM MDTSevere Thunderstorm WarningABRBeadle, Hand42 min
Jul 18, 2:12 PM MDTSevere Thunderstorm WarningABRDeuel18 min
Jul 18, 4:40 PM MDTSevere Thunderstorm WarningABRCampbell, Corson65 min
Jul 18, 5:27 PM MDTSevere Thunderstorm WarningABRCampbell63 min
Jul 18, 5:34 PM MDTSevere 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.