Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 180, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 2, 1997, 7:44 PM CDT for Swift 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 2, 1997, 7:44 PM CDT (00:44 UTC)
- Expired
- Aug 2, 1997, 8:45 PM CDT
- In force
- 61 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Swift County, MN
The radar
The Minneapolis radar (KMPX), 173 km from the middle of the area, began a volume at 00:45 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 2, 5:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 0.7 hours before the alert went out and 170 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
- 1589 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 1478 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 4.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMSP 030045 RRA
SVRMSP
MNC151-030145-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
744 PM CDT SAT AUG 2 1997
* SEVERE THUNDERSTORM WARNING FOR
EASTERN SWIFT COUNTY - WEST CENTRAL MINNESOTA
* UNTIL 845 PM CDT
* SOME LOCATIONS AFFECTED
BENSON
SWIFT FALLS
CLONTARF
MURDOCK
* AT 745 PM CDT DOPPLER RADAR INDICATED A SEVERE STORM WITH LARGE
HAIL AND DAMAGING WINDS NEAR SjWIFT FALLS OR 30 MILES NORTHWEST OF
WILLMAR. THE STORM WAS MOVING SOUTHEAST AT 15 MPH.
THIS IS A DANGEROUS STORM...WITH LARGE HAIL. STAY INDOORS AWAY
FROM WINDOWS.
HOWIESONThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 7:11 PM CDT | Severe Thunderstorm Warning | MPX | Todd | 49 min |
| Aug 2, 7:27 PM CDT | Severe Thunderstorm Warning | MPX | Pope | 33 min |
| Aug 2, 8:23 PM CDT | Severe Thunderstorm Warning | MPX | Mille Lacs | 52 min |
| Aug 2, 8:29 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Sherburne, Stearns | 61 min |
| Aug 2, 8:52 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Pope | 38 min |
| Aug 2, 8:56 PM CDT | Tornado Warning | MPX | Wright | 34 min |
| Aug 2, 9:10 PM CDT | Tornado Warning | MPX | Sherburne | 35 min |
| Aug 2, 9:20 PM CDT | Flash Flood Warning | MPX | Anoka, Hennepin | 55 min |
| Aug 2, 9:20 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Hennepin | 55 min |
| Aug 2, 9:44 PM CDT | Tornado Warning | MPX | Meeker, Wright | 46 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.