Alert archive / South Dakota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 92, NWS Aberdeen, SD

July 18, 1990Clark County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 18, 1990, 2:39 PM CDT for Clark County, South Dakota. It was in force for 51 min.

The area

The counties it named.

The facts

Issued
Jul 18, 1990, 2:39 PM CDT (19:39 UTC)
Expired
Jul 18, 1990, 3:30 PM CDT
In force
51 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County Clark County, SD

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Aberdeen, SD (KHON), launched 12:00Z, 7.7 hours before the alert went out and 53 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 1990-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1990-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -25 square meters per square second.1939587897117136Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2240 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
-25 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 18, 1:50 PM CDT, 49 minutes before
SDZ004-181950-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
150 PM CDT WED JUL 18 1990

AT 145 PM CDT RADAR INDICATED A THUNDERSTORM IN NORTHERN FAULK COUNTY
SOUTHWEST OF ABERDEEN. MOVEMENT OF THE THUNDERSTORM WAS EAST AT 30 MPH.

THE FAULK COUNTY SHERIFF REPORTED PEA SIZED HAIL IN FAULKTON AT 130 PM.

THESE STORMS CAN BE EXPECTED TO PRODUCE HEAVY RAIN...STRONG WINDS...
SMALL HAIL...DANGEROUS LIGHTNING AS THEY CONTINUE TO MOVE A/CROSS NORTH
CENTRAL AND NORTHEAST SOUTH DAKOTA.

RESIDENTS IN THE PATHS OF THESE STORMS SHOULD BE PREPARED TO TAKE
SHELTER AND TAKE WHATEVER ACTION IS NECESSARY TO PROCTECT THEMSELVES.

 ADDISON

The office that day

Everything else NWS Aberdeen, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 18, 10:18 AM CDTSevere Thunderstorm WarningABRSully27 min
Jul 18, 10:53 AM CDTSevere Thunderstorm WarningABRHyde37 min
Jul 18, 12:20 PM CDTSevere Thunderstorm WarningABRFaulk55 min
Jul 18, 2:12 PM CDTSevere Thunderstorm WarningABRSpink56 min
Jul 18, 3:39 PM CDTSevere Thunderstorm WarningABRClark, Hamlin66 min
Jul 18, 5:42 PM CDTSevere Thunderstorm WarningABRHughes, Stanley63 min
Jul 18, 5:53 PM CDTSevere Thunderstorm WarningABRSanborn67 min
Jul 18, 6:46 PM CDTSevere Thunderstorm WarningABRFaulk, Potter59 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1990Every severe thunderstorm warning in 1990

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.