Alert archive / South Dakota / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 26, NWS Sioux Falls, SD

May 31, 1996Hanson County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at May 31, 1996, 7:58 PM CDT for Hanson County, South Dakota. It was in force for 32 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: May 31, 1996, 7:58 PM CDT (00:58 UTC)
Expired: May 31, 1996, 8:30 PM CDT
In force: 32 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

County Hanson County, SD

The radar

The Sioux Falls radar (KFSD), 86 km from the middle of the area, began a volume at 00:59 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 00:00Z, 1.0 hours before the alert went out and 145 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2345 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 770 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 257 m²/s²
0-3 km storm-relative helicity: 340 m²/s²
Significant tornado parameter: 3.5
Supercell composite: 16.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 010058
SVRFSD
SDC061-010130-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
758 PM CDT FRI MAY 31 1996

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS SD HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 830 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHEAST SOUTH DAKOTA

   ...SOUTHERN HANSON COUNTY
 
AT 754 PM CDT...A SEVERE THUNDERSTORM WAS INDICATED BY SIOUX FALLS
DOPPLER RADAR 20 MILES SOUTHEAST OF MITCHELL OR 10 MILES SOUTH OF
ALEXANDRIA MOVING EAST AT 30 MPH. THIS STORM IS EXPECTED TO
AFFECT EMERY BY 815 PM CDT.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...vAND VERY HEAVY RAIN.  FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS.

SEVERE THUNDERSTORMS CAN AND OFTEN DO PRODUCE TORNADOES WITH LITTLE
OR NO ADVANCE WARNING.

 JCV

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, May 31, 5:52 PM CDT, 2 hours 6 minutes before

SDZ003-014-015-032-033-010100-

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
555 PM CDT FRI MAY 31 1996

...TORNADO WATCH CANCELED FOR A NUMBER OF COUNTIES WEST OF THE MISSOURI
RIVER IN SOUTH DAKOTA...

THE SOUTH DAKOTA COUNTIES OF CORSON..DEWEY...STANLEY...ZIEBACH...AND
HAAKON HAVE BEEN CLEARED FROM TORNADO WATCH 510.  THERE ARE NO LONGER
ANY COUNTIES WEST OF THE MISSOURI RIVER INCLUDED IN THE WATCH.

THE TORNADO WATCH CONTINUES IN EFFECT EAST OF RIVER.

UMLAND

Nearby

Severe Thunderstorm Warnings in South Dakota, 1996 Every severe thunderstorm warning 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.