Alert archive / South Dakota / Tornado Warnings in 1997

Tornado Warning 19, NWS Sioux Falls, SD

September 8, 1997Hutchinson County, Turner County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Sep 8, 1997, 2:25 PM CDT for Hutchinson County, Turner County, South Dakota. It was in force for 35 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Sep 8, 1997, 2:25 PM CDT (19:25 UTC)
Expired: Sep 8, 1997, 3:00 PM CDT
In force: 35 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

Counties Hutchinson County, SD, Turner County, SD

The radar

The Sioux Falls radar (KFSD), 65 km from the middle of the area, began a volume at 19:25 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.

What was reported inside it

Time	Report	Where	Remark
Sep 8, 2:30 PM CDT	Hail 0.75	Parker, SD
Sep 8, 2:35 PM CDT	Tornado F0	Hurley, SD

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 7.4 hours before the alert went out and 191 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: 1740 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 1054 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 139 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 081925 RRA
TORFSD
SDC067-125-082000-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
225 PM CDT MON SEP 8 1997

* TORNADO WARNING FOR
  SOUTHEASTERN HUTCHINSON COUNTY IN SOUTHEASTERN SOUTH DAKOTA
  SOUTHWESTERN TURNER COUNTY IN SOUTHEASTERN SOUTH DAKOTA

* UNTIL 300 PM CDT
 
* THE TORNADO IS CURRENTLY EXPECTED TO REMAIN OVER RURAL AREAS.

* AT 224 PM CDT...NATIONAL WEATHER SERVICE SPOTTERS REPORTED A
  TORNADO 24 MILES NORTH OF YANKTON  OR 6 MILES EAST OF MENNO MOVING
  SOUTHEAST AT 30 MPH.
 
DO NOT USE YOUR CAR TO OUTRUN A TORNADO.  CARS ARE EASILY TOSSED
AROUND BY TORNADIC WINDS.  IF YOU ARE CAUGHT IN THE PATH OF A
TORNADO...LEAVE THE CAR AND GO TO A STRONGp BUILDING.  IF NO
STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT.

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 8, 11:37 AM CDT	Severe Thunderstorm Warning	FSD	Beadle, Jerauld	33 min
Sep 8, 12:08 PM CDT	Severe Thunderstorm Warning	FSD	Beadle, Sanborn	32 min
Sep 8, 12:28 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury	27 min
Sep 8, 12:58 PM CDT	Severe Thunderstorm Warning	FSD	Brookings, Kingsbury	32 min
Sep 8, 1:24 PM CDT	Severe Thunderstorm Warning	FSD	Lake, Moody	31 min
Sep 8, 1:55 PM CDT	Severe Thunderstorm Warning	FSD	Moody	30 min
Sep 8, 2:10 PM CDT	Severe Thunderstorm Warning	FSD	Minnehaha	30 min
Sep 8, 2:22 PM CDT	Severe Thunderstorm Warning	FSD	Turner	33 min
Sep 8, 2:29 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	31 min
Sep 8, 3:13 PM CDT	Severe Thunderstorm Warning	FSD	Clay, Yankton	32 min
Sep 8, 3:42 PM CDT	Severe Thunderstorm Warning	FSD	Gregory	33 min

Nearby

Tornado Warnings in South Dakota, 1997 Every tornado warning in 1997 Tornadoes in 1997

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.