Alert archive / Minnesota / Tornado Warnings in 1997

Tornado Warning 1, NWS Sioux Falls, SD

June 22, 1997Lincoln County, Minnesota; Brookings County, South Dakota

NWS Sioux Falls, SD issued this tornado warning at Jun 22, 1997, 5:26 PM CDT for Lincoln County, Minnesota; Brookings County, South Dakota. It was in force for 29 min. 5 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: Jun 22, 1997, 5:26 PM CDT (22:26 UTC)
Expired: Jun 22, 1997, 5:55 PM CDT
In force: 29 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

Counties Lincoln County, MN, Brookings County, SD

The radar

The Sioux Falls radar (KFSD), 91 km from the middle of the area, began a volume at 22:29 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
Jun 22, 5:30 PM CDT	Tornado F0	Brookings, SD	A brief tornado observed by spotters caused no damage.
Jun 22, 5:39 PM CDT	Tornado F0	Aurora, SD	A brief tornado observed by a National Weather Service employee and other spotters caused no damage.
Jun 22, 5:45 PM CDT	Hail 1.75	Lake Benton, MN	Large hail devastated crops in most of Lincoln County. An estimated 180 thousand acres of crops were affected, with 80 thousand acres totally destroyed.
Jun 22, 5:45 PM CDT	Thunderstorm Wind 52	Lake Benton, MN	Thunderstorm winds caused tree damage and other minor property damage in much of Lincoln County.
Jun 22, 5:50 PM CDT	Thunderstorm Wind 52	White, SD	Thunderstorm winds uprooted a few trees, caused other tree damage, and blew shingles off of roofs.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 22, 5:00 PM CDT	Tornado Watch	SPC	5 hr
Jun 22, 12:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 10.4 hours before the alert went out and 158 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: 1357 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 762 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 136 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 222226 RRA
TORFSD
MNC081-SDC011-222255-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
526 PM CDT SUN JUN 22 1997

* TORNADO WARNING FOR
  EASTERN BROOKINGS COUNTY - EASTCENTRAL SOUTH DAKOTA
  WESTERN LINCOLN COUNTY - SOUTHWESTERN MINNESOTA

* UNTIL 555 PM CDT
 
* SOME AREAS AFFECTED
  AURORA                   AROUND 535 PM CDT
  BUSHNELL                 AROUND 530 PM CDT
  LAKE BENTON              AROUND 545 PM CDT
  ELKTON                   AROUND 545 PM CDT

* AT 525 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A DEVELOPING TORNADO 8 MILES NORTHEAST OF BROOKINGS  OR 2 MILES
  NORTH OF BUSHNELL MOVING SOUTHEAST AT 30 MPH.
 
IF YOU ARE IN T(HE PATH OF A TORNADO...THE SAFEST PLACE IN A HOME OR
BUSINESS IS AN INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE.  AVOID
WINDOWS.

RSR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 5:02 PM CDT	Severe Thunderstorm Warning	FSD	Lincoln	48 min
Jun 22, 5:45 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	45 min
Jun 22, 5:56 PM CDT	Tornado Warning	FSD	Lincoln	29 min
Jun 22, 6:19 PM CDT	Severe Thunderstorm Warning	FSD	Murray, Pipestone	46 min
Jun 22, 6:30 PM CDT	Severe Thunderstorm Warning	FSD	Lyon	30 min
Jun 22, 6:58 PM CDT	Severe Thunderstorm Warning	FSD	Cottonwood, Murray	47 min
Jun 22, 4:25 AM CDT	Severe Thunderstorm Warning	FSD	Gregory	30 min

Nearby

Tornado Warnings in Minnesota, 1997 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.