Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 21, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 22, 1997, 8:56 PM CDT for Martin County, Minnesota. It was in force for 34 min. 1 report 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
- Jun 22, 1997, 8:56 PM CDT (01:56 UTC)
- Expired
- Jun 22, 1997, 9:30 PM CDT
- In force
- 34 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Martin County, MN
The radar
The Minneapolis radar (KMPX), 152 km from the middle of the area, began a volume at 01:57 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 |
|---|---|---|---|
| Jun 22, 9:00 PM CDT | Thunderstorm Wind 50 | Granada, MN | 10 inch diameter tree branches down. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 22, 5:00 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 1.9 hours before the alert went out and 151 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
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
959
WUUS1 KMSP 230158 RRA
SVRMSP
MNC091-230230-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
856 PM CDT SUN JUN 22 1997
* SEVERE THUNDERSTORM WARNING FOR
EASTERN MARTIN COUNTY - SOUTH CENTRAL MINNESOTA
* UNTIL 930 PM CDT
* SOME LOCATIONS AFFECTED
WILBERT
EAST CHAIN
IMOGENE
FAIRMONT
GRANADA
* AT 855 PM LOCAL LAW ENFORCEMENT REPORTED A SEVERE STORM WITH
DAMAGING WINDS 2 MILES SOUTH OF FAIRMONT. THE STORM WAS MOVING
SOUTHEAST AT 35 MPH.
WINDS IN EXCESS OF 65 MPH WERE REPORTED JUST SOUTH OF FAIRMONT.
THIS IS A DANGEROUS STORM. STAY INDOORS AWAY FROM WINDOWS.
JMM
&The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 7:15 PM CDT | Severe Thunderstorm Warning | MPX | Brown | 60 min |
| Jun 22, 8:06 PM CDT | Severe Thunderstorm Warning | MPX | Watonwan | 49 min |
| Jun 22, 8:17 PM CDT | Tornado Warning | MPX | Watonwan | 48 min |
| Jun 22, 8:44 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Faribault | 61 min |
| Jun 22, 9:06 PM CDT | Severe Thunderstorm Warning | MPX | Nicollet | 44 min |
| Jun 22, 9:06 PM CDT | Severe Thunderstorm Warning | MPX | Nicollet | 59 min |
| Jun 22, 11:51 PM CDT | Severe Thunderstorm Warning | MPX | Douglas | 69 min |
| Jun 23, 12:47 AM CDT | Severe Thunderstorm Warning | MPX | Todd | 63 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.