Alert archive / Wisconsin / Severe Thunderstorm Watches in 1997
Severe Thunderstorm Watch 731
The Storm Prediction Center issued this severe thunderstorm watch at Sep 16, 1997, 6:00 PM CDT for Dubuque County, Iowa; 26 counties in Wisconsin. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 16, 1997, 6:00 PM CDT (23:00 UTC)
- Expired
- Sep 17, 1997, 12:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 27 counties
Dubuque County, IA, Adams County, WI, Calumet County, WI, Columbia County, WI, Dane County, WI, Dodge County, WI, Fond du Lac County, WI, Grant County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jefferson County, WI, Juneau County, WI, Lafayette County, WI, Marquette County, WI, Milwaukee County, WI, Ozaukee County, WI, Racine County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Sheboygan County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI, Waushara County, WI, Winnebago County, WI
The radar
The Milwaukee radar (KMKX), 81 km from the middle of the area, began a volume at 22:59 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
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 16, 6:46 PM CDT | Severe Thunderstorm Warning | MKX | Lafayette | 44 min |
| Sep 16, 7:06 PM CDT | Severe Thunderstorm Warning | ARX | Juneau | 54 min |
| Sep 16, 7:06 PM CDT | Severe Thunderstorm Warning | ARX | Richland | 54 min |
| Sep 16, 7:17 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Sauk | 43 min |
| Sep 16, 7:30 PM CDT | Severe Thunderstorm Warning | MKX | Green | 45 min |
| Sep 16, 7:36 PM CDT | Severe Thunderstorm Warning | MKX | Dane | 54 min |
| Sep 16, 7:39 PM CDT | Severe Thunderstorm Warning | ARX | Adams | 36 min |
| Sep 16, 7:44 PM CDT | Severe Thunderstorm Warning | MKX | Rock | 61 min |
| Sep 16, 7:52 PM CDT | Severe Thunderstorm Warning | GRB | Waushara | 63 min |
| Sep 16, 8:00 PM CDT | Severe Thunderstorm Warning | MKX | Sauk | 60 min |
| Sep 16, 8:00 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Green Lake, Marquette | 60 min |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.0 hours before the alert went out and 183 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
- 124 J/kg
- Mixed-layer CIN
- -149 J/kg
- Mixed-layer LCL
- 1028 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 64 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 |
|---|---|---|---|---|
| Sep 16, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Allamakee, Appanoose, Audubon, Benton and 53 more | 6 hr |
| Sep 16, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | Cedar, Clinton, Davis, Des Moines, Dubuque, Henry and 10 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Wisconsin, 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.