Alert archive / Minnesota / Tornado Warnings in 1997

Tornado Warning 3, NWS Sioux Falls, SD

June 22, 1997Jackson County, Minnesota

NWS Sioux Falls, SD issued this tornado warning at Jun 22, 1997, 7:35 PM CDT for Jackson County, Minnesota. It was in force for 35 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
Jun 22, 1997, 7:35 PM CDT (00:35 UTC)
Expired
Jun 22, 1997, 8:10 PM CDT
In force
35 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Jackson County, MN

The radar

The Sioux Falls radar (KFSD), 127 km from the middle of the area, began a volume at 00:19 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 watch it was issued in

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

IssuedProductOfficeLasted
Jun 22, 5:00 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.6 hours before the alert went out and 180 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, Minneapolis, MN at 00:00Z on 1997-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1565 joules per kilogram.LCLLFCEL10008507005003002001001 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, Minneapolis, MN at 00:00Z on 1997-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 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
1565 J/kg
Mixed-layer CIN
-91 J/kg
Mixed-layer LCL
1227 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
388 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFSD 230035 RRA
TORFSD
MNC063-230110-

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

* TORNADO WARNING FOR
  NORTHERN JACKSON COUNTY - SOUTHWESTERN MINNESOTA

* UNTIL 810 PM CDT
 
* SOME AREAS AFFECTED
  HERON LAKE               AROUND 735 PM CDT
  OKABENA                  AROUND 740 PM CDT
  LAKEFIELD                AROUND 755 PM CDT

* AT 733 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A DEVELOPING TORNADO 16 MILES NORTHEAST OF WORTHINGTON  OR 2 MILES
  NORTHWEST OF HERON LAKE MOVING EAST AT 30 MPH.
 
PEOPLE IN THE PROJECTED PATH OF THE TORNADO AND SHOULD TAKE SHELTER
IMMEDIATELY.  MOVE INSIDE A STORM CELLAR... A BASEMENT...OR A SMALL
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOUSE.
RSR

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 7:16 PM CDTSevere Thunderstorm WarningFSDPipestone34 min
Jun 22, 7:43 PM CDTSevere Thunderstorm WarningFSDLincoln32 min
Jun 22, 7:53 PM CDTSevere Thunderstorm WarningFSDCottonwood, Murray32 min
Jun 22, 8:11 PM CDTSevere Thunderstorm WarningFSDJackson34 min

Nearby

Tornado Warnings in Minnesota, 1997Every tornado warning in 1997Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.