Alert archive / South Dakota / Tornado Warnings in 1996

Tornado Warning 30, NWS Aberdeen, SD

July 20, 1996Hyde County, South Dakota

NWS Aberdeen, SD issued this tornado warning at Jul 20, 1996, 6:50 PM CDT for Hyde County, South Dakota. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 20, 1996, 6:50 PM CDT (23:50 UTC)
Expired
Jul 20, 1996, 7:40 PM CDT
In force
50 min
Issued by
NWS Aberdeen, SD
Area
Whole counties

County Hyde County, SD

The radar

The Aberdeen radar (KABR), 132 km from the middle of the area, began a volume at 23:50 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.8 hours before the alert went out and 94 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 1996-07-20Temperature 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 1996-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 89 square meters per square second.19395878Sfc1 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
553 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
89 m²/s²
0-3 km storm-relative helicity
134 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KABR 202350
TORABR
SDC069-210040-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
650 PM CDT SAT JUL 20 1996

THE NATIONAL WEATHER SERVICE IN ABERDEEN SD HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 740 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN CENTRAL SOUTH DAKOTA

   ...NORTHERN HYDE COUNTY
 
 THE TORNADO IS EXPECTED TO REMAIN IN RURAL AREAS.

AT 648 PM CDT...A DEVELOPING TORNADO WAS INDICATED BY ABERDEEN
DOPPLER RADAR 19 MILES SOUTHEAST OF GETTYSBURG OR 19 MILES
NORTHWEST OF HOLABIRD MOVING EAST AT 10 MPH.
 
DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO. CARS ARE
EASILY TOSSED AROUND BY TORNADO WINDS. IF YOU ARE CAUGHT
IN THE PATH OF A TORNADO...LEAVE THE CAR AND GO TO A STRONG
BUILDING. IF NO STRUCTURE IS NEARBY...SEEK SHELTER IN A
DITCH OF LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
RB/MM

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 5:47 PM CDTTornado WarningABRMcPherson48 min
Jul 20, 6:10 PM CDTSevere Thunderstorm WarningABRHughes50 min
Jul 20, 6:19 PM CDTSevere Thunderstorm WarningABRSully36 min

Nearby

Tornado Warnings in South Dakota, 1996Every tornado warning in 1996Tornadoes in 1996

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; radar from the NEXRAD Level II archive.