Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 201, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 15, 1997, 5:44 PM CDT for Anoka County, Isanti County, Minnesota. It was in force for 61 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, 5:44 PM CDT (22:44 UTC)
- Expired
- Aug 15, 1997, 6:45 PM CDT
- In force
- 61 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Anoka County, MN, Isanti County, MN
The radar
The Minneapolis radar (KMPX), 67 km from the middle of the area, began a volume at 22:45 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, 10.7 hours before the alert went out and 68 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.
151
WUUS1 KMSP 152246 RRA
SVRMSP
MNC003-059-152345-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
544 PM CDT FRI AUG 15 1997
* SEVERE THUNDERSTORM WARNING FOR
ANOKA COUNTY - EAST CENTRAL MINNESOTA
ISANTI COUNTY - EAST CENTRAL MINNESOTA
* UNTIL 645 PM CDT
* SOME LOCATIONS AFFECTED
ANOKA
ST FRANCIS
CAMBRIDGE
DALBO
* AT 545 PM CDT DOPPLER RADAR INDICATED A LINE OF SEVERE STORMS
FROM PRINCETON TO ELK RIVER...OR FROM ABOUT 25 MILES SOUTHWEST
OF CAMBRIDGE TO 10 MILES WEST OF CAMBRIDGE. THE STORMS WERE
MOVING EAST-NORTHEAST AT 35 MPH.
THESE ARE DANGEROUS STORMS WITH LARGE HAIL AND DAMAGING WINDS. STAY
INDOORS 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, 6:04 PM CDT | Severe Thunderstorm Warning | MPX | Scott | 66 min |
| Aug 15, 6:10 PM CDT | Severe Thunderstorm Warning | MPX | Chisago | 30 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.