Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 237, NWS Twin Cities, MN

October 8, 1997Redwood County, Renville County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Oct 8, 1997, 8:25 PM CDT for Redwood County, Renville County, Minnesota. It was in force for 50 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: Oct 8, 1997, 8:25 PM CDT (01:25 UTC)
Expired: Oct 8, 1997, 9:15 PM CDT
In force: 50 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties Redwood County, MN, Renville County, MN

The radar

The Minneapolis radar (KMPX), 125 km from the middle of the area, began a volume at 01:29 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Oct 8, 7:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.4 hours before the alert went out and 123 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: 239 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 518 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 401 m²/s²
0-3 km storm-relative helicity: 449 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.1

Open this sounding in Storm Lab

The text

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

741 
WUUS1 KMSP 090126 RRA
SVRMSP
MNC023-127-129-149-151-090215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
825 PM CDT WED OCT 8 1997


* SEVERE THUNDERSTORM WARNING FOR
  CHIPPEWA COUNTY - WEST CENTRAL MINNESOTA
  REDWOOD COUNTY - SOUTHWESTERN MINNESOTA
  RENVILLE COUNTY - CENTRAL MINNESOTA
  STEVENS COUNTY - WEST CENTRAL MINNESOTA
  SWIFT COUNTY - WEST CENTRAL MINNESOTA

* UNTIL 915 PM CDT

* SOME LOCATIONS AFFECTED
    MORRIS
    BENSON
    MONTEVIDEO
    REDWOOD FALLS

* AT 825 PM CDT DOPPLER RADAR INDICATED A LINE OF SEVERE STORMS
  FROM APPLETON TO SOUTH OF MARSHALL.  THE STORMS WERE MOVING
  NORTHEAST AT 50 MPH.

DAMAGING WINDS AND LARGE HAIL ARE LIKELY.  GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS.


MCBEATH PETERS

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 8, 7:56 PM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle, Yellow Medicine	34 min
Oct 8, 8:25 PM CDT	Severe Thunderstorm Warning	MPX	Stevens, Swift	50 min
Oct 8, 8:25 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa	50 min
Oct 8, 9:07 PM CDT	Severe Thunderstorm Warning	MPX	Redwood, Renville	53 min
Oct 8, 9:07 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi	53 min
Oct 8, 11:15 PM CDT	Severe Thunderstorm Warning	MPX	Kanabec, Mille Lacs	60 min
Oct 8, 11:43 PM CDT	Severe Thunderstorm Warning	MPX	Nicollet, Sibley	47 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1997 Every severe thunderstorm warning 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.