Alert archive / Minnesota / Severe Thunderstorm Watches in 1997
Severe Thunderstorm Watch 650
The Storm Prediction Center issued this severe thunderstorm watch at Jul 24, 1997, 10:00 PM CDT for 9 counties in Iowa; 25 counties in Minnesota; 25 counties in South Dakota. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 24, 1997, 10:00 PM CDT (03:00 UTC)
- Expired
- Jul 25, 1997, 4:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 59 counties
Clay County, IA, Dickinson County, IA, Emmet County, IA, Kossuth County, IA, Lyon County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Sioux County, IA, Blue Earth County, MN, Brown County, MN, Chippewa County, MN, Cottonwood County, MN, Faribault County, MN, Jackson County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Lincoln County, MN, Lyon County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Pipestone County, MN, Redwood County, MN, Renville County, MN, Rock County, MN, Sibley County, MN, Swift County, MN, Watonwan County, MN, Wright County, MN, Yellow Medicine County, MN, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Clark County, SD, Clay County, SD, Codington County, SD, Davison County, SD, Deuel County, SD, Douglas County, SD, Grant County, SD, Hamlin County, SD, Hanson County, SD, Hutchinson County, SD, Kingsbury County, SD, Lake County, SD, Lincoln County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Sanborn County, SD, Spink County, SD, Turner County, SD, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 82 km from the middle of the area, began a volume at 02:59 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.
Warnings issued inside it
19 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 10:33 PM CDT | Tornado Warning | FSD | Kingsbury | 32 min |
| Jul 24, 11:05 PM CDT | Tornado Warning | FSD | Kingsbury | 35 min |
| Jul 24, 11:41 PM CDT | Severe Thunderstorm Warning | FSD | Brookings | 49 min |
| Jul 24, 11:50 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln | 35 min |
| Jul 25, 12:02 AM CDT | Tornado Warning | FSD | Kingsbury | 33 min |
| Jul 25, 12:07 AM CDT | Severe Thunderstorm Warning | ABR | Hamlin | 48 min |
| Jul 25, 12:14 AM CDT | Flash Flood Warning | ABR | Clark, Codington, Deuel, Hamlin | 3 hr |
| Jul 25, 12:57 AM CDT | Severe Thunderstorm Warning | FSD | Lyon | 48 min |
| Jul 25, 1:01 AM CDT | Severe Thunderstorm Warning | MPX | Yellow Medicine | 49 min |
| Jul 25, 1:33 AM CDT | Tornado Warning | MPX | Yellow Medicine | 32 min |
| Jul 25, 2:04 AM CDT | Severe Thunderstorm Warning | MPX | Renville | 46 min |
| Jul 25, 2:07 AM CDT | Severe Thunderstorm Warning | MPX | Redwood | 48 min |
| Jul 25, 2:23 AM CDT | Tornado Warning | MPX | Renville | 32 min |
| Jul 25, 2:26 AM CDT | Flash Flood Warning | MPX | Blue Earth, Faribault, Freeborn, Le Sueur, Steele, Waseca | 4 hr |
| Jul 25, 2:26 AM CDT | Flash Flood Warning | MPX | Brown, Nicollet, Redwood, Renville, Sibley | 4 hr |
| Jul 25, 2:26 AM CDT | Flash Flood Warning | MPX | Martin, Watonwan | 4 hr |
| Jul 25, 2:28 AM CDT | Severe Thunderstorm Warning | MPX | McLeod, Sibley | 62 min |
| Jul 25, 2:34 AM CDT | Severe Thunderstorm Warning | MPX | Brown, Nicollet | 61 min |
| Jul 25, 2:56 AM CDT | Tornado Warning | MPX | McLeod | 34 min |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 3.0 hours before the alert went out and 147 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
- 2516 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 877 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 45 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.6
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 |
|---|---|---|---|---|
| Jul 25, 3:30 AM CDT | Severe Thunderstorm Watch | SPC | Anoka, Blue Earth, Carver, Dakota, Dodge, Faribault and 17 more | 6 hr |
| Jul 25, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Clay, Clearwater, Kittson, Lake of the Woods, Mahnomen and 7 more | 5 hr |
| Jul 24, 7:45 PM CDT | Severe Thunderstorm Watch | SPC | Aurora, Bennett, Brule, Buffalo, Charles Mix, Gregory and 12 more | 5 hr |
| Jul 25, 6:00 PM CDT | Tornado Watch | SPC | Beadle, Brookings, Brown, Campbell, Clark, Codington and 17 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Minnesota, 1997Severe Thunderstorm Watches in South Dakota, 1997Severe Thunderstorm Watches in Iowa, 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; radar from the NEXRAD Level II archive.