Alert archive / Minnesota / Severe Thunderstorm Watches in 1997
Severe Thunderstorm Watch 670
The Storm Prediction Center issued this severe thunderstorm watch at Aug 2, 1997, 5:30 PM CDT for 44 counties in Minnesota; Brookings County, Deuel County, Grant County, South Dakota; 7 counties in Wisconsin. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 2, 1997, 5:30 PM CDT (22:30 UTC)
- Expired
- Aug 2, 1997, 11:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 54 counties
Anoka County, MN, Benton County, MN, Big Stone County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Chisago County, MN, Dakota County, MN, Dodge County, MN, Douglas County, MN, Goodhue County, MN, Grant County, MN, Hennepin County, MN, Isanti County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Le Sueur County, MN, Lincoln County, MN, Lyon County, MN, McLeod County, MN, Meeker County, MN, Nicollet County, MN, Olmsted County, MN, Pope County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Stevens County, MN, Swift County, MN, Traverse County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Winona County, MN, Wright County, MN, Yellow Medicine County, MN, Brookings County, SD, Deuel County, SD, Grant County, SD, Barron County, WI, Buffalo County, WI, Dunn County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Saint Croix County, WI
Warnings issued inside it
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 5:46 PM CDT | Severe Thunderstorm Warning | FGF | Grant | 29 min |
| Aug 2, 5:52 PM CDT | Severe Thunderstorm Warning | MPX | Douglas | 53 min |
| Aug 2, 6:12 PM CDT | Severe Thunderstorm Warning | FGF | Grant | 33 min |
| Aug 2, 6:29 PM CDT | Severe Thunderstorm Warning | MPX | Pope, Stevens | 61 min |
| Aug 2, 6:55 PM CDT | Severe Thunderstorm Warning | MPX | Isanti, Mille Lacs | 65 min |
| Aug 2, 7:27 PM CDT | Severe Thunderstorm Warning | MPX | Pope | 33 min |
| Aug 2, 7:44 PM CDT | Severe Thunderstorm Warning | MPX | Swift | 61 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 |
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 10.5 hours before the alert went out and 296 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
- 1632 J/kg
- Mixed-layer CIN
- -142 J/kg
- Mixed-layer LCL
- 1299 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | Beadle, Brown, Buffalo, Campbell, Clark, Codington and 21 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Minnesota, 1997Severe Thunderstorm Watches in Wisconsin, 1997Severe Thunderstorm Watches in South Dakota, 1997Every severe thunderstorm watch 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.