Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 230, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Oct 6, 1997, 4:48 AM CDT for Chippewa County, Renville County, Yellow Medicine County, Minnesota. It was in force for 62 min. 9 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, 4:48 AM CDT (09:48 UTC)
- Expired
- Oct 6, 1997, 5:50 AM CDT
- In force
- 62 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Chippewa County, MN, Renville County, MN, Yellow Medicine County, MN
The radar
The Minneapolis radar (KMPX), 149 km from the middle of the area, began a volume at 09:50 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, 5:15 AM CDT | Thunderstorm Wind 50 | Hanley Falls, MN | Power lines blown down. Estimated windspeed. |
| Oct 6, 5:20 AM CDT | Thunderstorm Wind 50 | Granite Falls, MN | Power lines blown down. Estimated windspeed. |
| Oct 6, 5:20 AM CDT | Thunderstorm Wind 50 | Wood Lake, MN | Barn and trees blown down. Estimated windspeed. |
| Oct 6, 5:35 AM CDT | Thunderstorm Wind 55 | Renville, MN | Barn blown down. Estimated windspeed. |
| Oct 6, 5:45 AM CDT | Thunderstorm Wind 55 | Bechyn, MN | Shed damage and broken windows. |
| Oct 6, 5:47 AM CDT | Hail 0.75 | Olivia, MN | Widespread pea to marble size hail that fell in areas three inches deep severely damaged crops over a large part of Renville county. Also, power lines and trees reported blown down by strong winds in area. |
| Oct 6, 5:50 AM CDT | Hail 0.75 | Bird Island, MN | Large branches also blown down. Roof taken off out building. |
| 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. |
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, 9.8 hours before the alert went out and 147 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 060949 RRA
SVRMSP
MNC023-129-173-061050-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
448 AM CDT MON OCT 6 1997
* SEVERE THUNDERSTORM WARNING FOR
CHIPPEWA COUNTY - WEST CENTRAL MINNESOTA
RENVILLE COUNTY - CENTRAL MINNESOTA
EASTERN YELLOW MEDICINE COUNTY - SOUTHWESTERN MINNESOTA
* UNTIL 550 AM CDT
* SOME LOCATIONS AFFECTED
MONTEVIDEO
GRANITE FALLS
RENVILLE
OLIVIA
* AT 445 AM CDT LOCAL LAW ENFORCEMENT REPORTED A SEVERE STORM WITH
DAMAGING WINDS NEAR CLARKFIELD OR 8 MILES SOUTH OF MONTEVIDEO.
THE STORM WAS MOVING EAST 40 MPH.
* TREES HAVE BEEN BLOWN DOWN IN CLARKFIELD
THIS IS A DANGEROUS STORM>...WITH DAMAGING WINDS. STAY INDOORS
AWAY FROM WINDOWS.
CARLYON
&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, 5:51 AM CDT | Severe Thunderstorm Warning | MPX | McLeod, Renville, Sibley | 54 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.