Alert archive / Wisconsin / Tornado Watches in 1997
Tornado Watch 687
The Storm Prediction Center issued this tornado watch at Aug 15, 1997, 9:00 PM EDT for 4 counties in Michigan; 6 counties in Minnesota; 29 counties in Wisconsin. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 15, 1997, 9:00 PM EDT (01:00 UTC)
- Expired
- Aug 16, 1997, 3:00 AM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 39 counties
Alger County, MI, Dickinson County, MI, Gogebic County, MI, Iron County, MI, Dodge County, MN, Goodhue County, MN, Olmsted County, MN, Steele County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Buffalo County, WI, Chippewa County, WI, Clark County, WI, Dunn County, WI, Eau Claire County, WI, Florence County, WI, Forest County, WI, Iron County, WI, Jackson County, WI, Juneau County, WI, La Crosse County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Menominee County, WI, Monroe County, WI, Oneida County, WI, Pepin County, WI, Pierce County, WI, Portage County, WI, Price County, WI, Rusk County, WI, Sawyer County, WI, Shawano County, WI, Taylor County, WI, Trempealeau County, WI, Vilas County, WI, Wood County, WI
The radar
The La Crosse radar (KARX), 116 km from the middle of the area, began a volume at 00:59 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
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 15, 9:05 PM EDT | Severe Thunderstorm Warning | GRB | Vilas | 70 min |
| Aug 15, 9:38 PM EDT | Severe Thunderstorm Warning | ARX | Wabasha | 52 min |
| Aug 15, 9:50 PM EDT | Tornado Warning | ARX | Wabasha | 40 min |
| Aug 15, 10:11 PM EDT | Tornado Warning | ARX | Buffalo | 49 min |
| Aug 15, 10:30 PM EDT | Severe Thunderstorm Warning | ARX | Trempealeau | 45 min |
| Aug 15, 11:35 PM EDT | Tornado Warning | MQT | Iron | 30 min |
| Aug 16, 12:08 AM EDT | Tornado Warning | MQT | Dickinson | 32 min |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 1.0 hours before the alert went out and 212 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
- 1954 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1106 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 194 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 5.9
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 16, 8:15 AM EDT | Severe Thunderstorm Watch | SPC | Lenawee, Monroe, Washtenaw, Wayne | 4 hr |
| Aug 16, 2:45 PM EDT | Severe Thunderstorm Watch | SPC | Berrien, Branch, Calhoun, Cass, Eaton, Genesee and 15 more | 6 hr |
| Aug 16, 6:15 PM EDT | Severe Thunderstorm Watch | SPC | Berrien, Van Buren | 6 hr |
Nearby
Tornado Watches in Wisconsin, 1997Tornado Watches in Minnesota, 1997Tornado Watches in Michigan, 1997Every tornado 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.