Alert archive / Minnesota / Tornado Warnings in 1997

Tornado Warning 30, NWS Twin Cities, MN

August 14, 1997Le Sueur County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Aug 14, 1997, 5:43 PM CDT for Le Sueur County, Minnesota. 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
Aug 14, 1997, 5:43 PM CDT (22:43 UTC)
Expired
Aug 14, 1997, 6:15 PM CDT
In force
32 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Le Sueur County, MN

The radar

The Minneapolis radar (KMPX), 55 km from the middle of the area, began a volume at 22:44 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

Minneapolis, MN (KMPX), launched 12:00Z, 10.7 hours before the alert went out and 54 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 12:00Z on 1997-08-14Temperature 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, Minneapolis, MN at 12:00Z on 1997-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.1939587897Sfc1 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
1284 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
128 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.

807 
WFUS1 KMSP 142245 RRA
TORMSP
MNC079-142315-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
543 PM CDT THU AUG 14 1997


* TORNADO WARNING FOR
  NORTHERN LE SUEUR COUNTY - SOUTH CENTRAL MINNESOTA

* UNTIL 615 PM CDT

* SOME LOCATIONS AFFECTED
    HEIDELBERG
    ST THOMAS
    LEXINGTON
    NEW PRAGUE

* AT 545 PM CDT DOPPLER RADAR DETECTED A POSSIBLE TORNADO 10 MILES
  NORTH OF LE CENTER.  THE STORM WAS MOVING EAST AT 30 MPH.

GO TO A SMALL INTERIOR ROOM AWAY FROM WINDOWS

MCBEATH PETERS

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 14, 5:19 PM CDTSevere Thunderstorm WarningMPXLe Sueur51 min
Aug 14, 6:15 PM CDTSevere Thunderstorm WarningMPXLe Sueur, Rice45 min
Aug 14, 6:25 PM CDTTornado WarningMPXGoodhue35 min
Aug 14, 6:37 PM CDTTornado WarningMPXDakota, Rice38 min
Aug 14, 6:55 PM CDTTornado WarningMPXGoodhue35 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.