Alert archive / Wisconsin / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 719
The Storm Prediction Center issued this severe thunderstorm watch at Sep 7, 2001, 6:15 PM CDT for 11 counties in Illinois; 7 counties in Iowa; 18 counties in Wisconsin. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 7, 2001, 6:15 PM CDT (23:15 UTC)
- Expired
- Sep 8, 2001, 12:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 36 counties
Cedar County, IA, Clinton County, IA, Dubuque County, IA, Jackson County, IA, Johnson County, IA, Jones County, IA, Scott County, IA, Boone County, IL, Carroll County, IL, DeKalb County, IL, Jo Daviess County, IL, Kane County, IL, Lee County, IL, McHenry County, IL, Ogle County, IL, Stephenson County, IL, Whiteside County, IL, Winnebago County, IL, Columbia County, WI, Dane County, WI, Dodge County, WI, Grant County, WI, Green County, WI, Iowa County, WI, Jefferson County, WI, Kenosha County, WI, Lafayette County, WI, Milwaukee County, WI, Ozaukee County, WI, Racine County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI
The radar
The Quad Cities radar (KDVN), 106 km from the middle of the area, began a volume at 23:15 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
13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 6:38 PM CDT | Severe Thunderstorm Warning | MKX | Sauk | 67 min |
| Sep 7, 6:58 PM CDT | Severe Thunderstorm Warning | DVN | Stephenson | 62 min |
| Sep 7, 6:59 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane | 61 min |
| Sep 7, 6:59 PM CDT | Severe Thunderstorm Warning | MKX | Green, Rock | 61 min |
| Sep 7, 7:08 PM CDT | Severe Thunderstorm Warning | DVN | Carroll | 67 min |
| Sep 7, 7:41 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson, Walworth | 79 min |
| Sep 7, 7:41 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Fond du Lac | 79 min |
| Sep 7, 7:45 PM CDT | Severe Thunderstorm Warning | LOT | Winnebago | 30 min |
| Sep 7, 8:21 PM CDT | Severe Thunderstorm Warning | MKX | Waukesha | 39 min |
| Sep 7, 8:41 PM CDT | Severe Thunderstorm Warning | MKX | Washington | 49 min |
| Sep 7, 9:54 PM CDT | Severe Thunderstorm Warning | DVN | Clinton, Scott | 36 min |
| Sep 7, 11:19 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 26 min |
| Sep 7, 11:20 PM CDT | Severe Thunderstorm Warning | DVN | Iowa, Johnson | 40 min |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.3 hours before the alert went out and 102 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
- 1137 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 827 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 223 m²/s²
- 0-3 km storm-relative helicity
- 184 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 2.7
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 7, 1:30 AM CDT | Severe Thunderstorm Watch | SPC | Cherokee, Dickinson, Lyon, Monona, O'Brien, Osceola and 3 more | 6 hr |
| Sep 7, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Allamakee, Appanoose, Benton, Black Hawk and 45 more | 5 hr |
| Sep 7, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Audubon, Cass, Fremont, Harrison, Mills, Montgomery and 2 more | 3 hr |
| Sep 7, 1:00 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Calumet, Columbia, Dodge, Fond du Lac, Green Lake and 23 more | 4 hr |
Nearby
Severe Thunderstorm Watches in Wisconsin, 2001Severe Thunderstorm Watches in Illinois, 2001Severe Thunderstorm Watches in Iowa, 2001Every severe thunderstorm watch in 2001
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.