Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 231, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Oct 6, 1997, 5:51 AM CDT for McLeod County, Renville County, Sibley County, Minnesota. It was in force for 54 min. 7 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
- Oct 6, 1997, 5:51 AM CDT (10:51 UTC)
- Expired
- Oct 6, 1997, 6:45 AM CDT
- In force
- 54 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties McLeod County, MN, Renville County, MN, Sibley County, MN
The radar
The Minneapolis radar (KMPX), 74 km from the middle of the area, began a volume at 10:54 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 |
|---|---|---|---|
| Oct 6, 5:55 AM CDT | Thunderstorm Wind 55 | Bird Island, MN | Barn collapse killed over 100 pigs. |
| Oct 6, 6:00 AM CDT | Hail 0.88 | Hector, MN | Hail covered ground. Some cars and airplanes damaged. |
| Oct 6, 6:06 AM CDT | Tornado F0 | Stewart, MN | Tree damage. |
| Oct 6, 6:10 AM CDT | Hail 0.75 | Gibbon, MN | Hail covered ground. |
| Oct 6, 6:10 AM CDT | Hail 1 | Brownton, MN | Hail accumulated to a depth of 3 inches with drifts to one foot. |
| Oct 6, 6:15 AM CDT | Hail 1 | Brownton, MN | |
| Oct 6, 6:30 AM CDT | Thunderstorm Wind 50 | Glencoe, MN | Power lines down. Estimated windspeed. |
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
Minneapolis, MN (KMPX), launched 00:00Z, 10.9 hours before the alert went out and 71 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2930 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMSP 061052 RRA
SVRMSP
MNC085-129-143-061145-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
551 AM CDT MON OCT 6 1997
* SEVERE THUNDERSTORM WARNING FOR
MCLEOD COUNTY - CENTRAL MINNESOTA
EASTERN RENVILLE COUNTY - CENTRAL MINNESOTA
SIBLEY COUNTY - SOUTH CENTRAL MINNESOTA
* UNTIL 645 AM CDT
* SOME LOCATIONS AFFECTED
BUFFALO LAKE
STEWART
BROWNTON
GIBBON
* AT 547 AM CDT DOPPLER RADAR INDICATED A SEVERE STORM WITH LARGE
HAIL NEAR HECTOR...OR ABOUT 20 MILES NORTHEAST OF REDWOOD FALLS.
THE STORM WAS MOVING EAST AT 40 TO 45 MPH. THREE QUARTER INCH
HAIL WAS REPORTED COVERING THE GROUND IN OLIVIA.
THIS IS A DANGEROUS STORM...WITH LARGE HAIL. STAY INDOORS AWAY
FROM WINDOWS.
MILLER
&The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 6, 4:20 AM CDT | Severe Thunderstorm Warning | MPX | Yellow Medicine | 35 min |
| Oct 6, 4:48 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Renville, Yellow Medicine | 62 min |
| Oct 6, 6:43 AM CDT | Severe Thunderstorm Warning | MPX | Carver, Scott | 62 min |
| Oct 6, 7:19 AM CDT | Severe Thunderstorm Warning | MPX | Dakota | 41 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1997Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.