Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 203, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 15, 1997, 6:10 PM CDT for Chisago County, Minnesota. It was in force for 30 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 15, 1997, 6:10 PM CDT (23:10 UTC)
- Expired
- Aug 15, 1997, 6:40 PM CDT
- In force
- 30 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Chisago County, MN
The radar
The Minneapolis radar (KMPX), 89 km from the middle of the area, began a volume at 23:10 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 |
|---|---|---|---|
| Aug 15, 4:15 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.2 hours before the alert went out and 91 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
- 738 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 698 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMSP 152312 RRA
SVRMSP
MNC025-152340-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
610 PM CDT FRI AUG 15 1997
* SEVERE THUNDERSTORM WARNING FOR
CHISAGO COUNTY - EAST CENTRAL MINNESOTA
* UNTIL 640 PM CDT
* SOME LOCATIONS AFFECTED
NORTH BRANCH
RUSH CITY
CENTER CITY
* AT AT 613 PM CDT DOPPLER RADAR INDICATED A SEVERE STORM WITH
LARGE HAIL AND DAMAGING WINDS JUST EAST OF `CAMBRIDGE. THE STORM
WAS MOVING EAST AT 40 MPH.
DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS.
A TORNADO WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES.
MILLERThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 7:14 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Rice | 46 min |
| Aug 14, 7:50 PM CDT | Tornado Warning | MPX | Le Sueur, Rice | 100 min |
| Aug 14, 7:50 PM CDT | Tornado Warning | MPX | Le Sueur, Rice | 40 min |
| Aug 15, 4:33 PM CDT | Severe Thunderstorm Warning | MPX | McLeod, Meeker, Renville | 42 min |
| Aug 15, 4:58 PM CDT | Severe Thunderstorm Warning | MPX | Wright | 32 min |
| Aug 15, 5:02 PM CDT | Severe Thunderstorm Warning | MPX | McLeod | 58 min |
| Aug 15, 5:26 PM CDT | Severe Thunderstorm Warning | MPX | Carver | 64 min |
| Aug 15, 5:41 PM CDT | Severe Thunderstorm Warning | MPX | Mille Lacs, Sherburne | 34 min |
| Aug 15, 5:44 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Isanti | 61 min |
| Aug 15, 6:04 PM CDT | Severe Thunderstorm Warning | MPX | Scott | 66 min |
| Aug 15, 6:27 PM CDT | Severe Thunderstorm Warning | MPX | Dakota | 63 min |
| Aug 15, 6:40 PM CDT | Severe Thunderstorm Warning | MPX | Le Sueur | 50 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.