Alert archive / Iowa / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 716
The Storm Prediction Center issued this severe thunderstorm watch at Sep 7, 2001, 4:00 PM CDT for 51 counties in Iowa; Crawford County, Wisconsin. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 7, 2001, 4:00 PM CDT (21:00 UTC)
- Expired
- Sep 7, 2001, 9:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 52 counties
Adair County, IA, Adams County, IA, Allamakee County, IA, Appanoose County, IA, Benton County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Buchanan County, IA, Butler County, IA, Cerro Gordo County, IA, Chickasaw County, IA, Clarke County, IA, Clayton County, IA, Dallas County, IA, Decatur County, IA, Delaware County, IA, Fayette County, IA, Floyd County, IA, Franklin County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hardin County, IA, Howard County, IA, Iowa County, IA, Jasper County, IA, Keokuk County, IA, Linn County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Mitchell County, IA, Monroe County, IA, Page County, IA, Polk County, IA, Poweshiek County, IA, Ringgold County, IA, Story County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Winneshiek County, IA, Worth County, IA, Wright County, IA, Crawford County, WI
Warnings issued inside it
15 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 4:01 PM CDT | Severe Thunderstorm Warning | DMX | Black Hawk, Bremer | 39 min |
| Sep 7, 4:07 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw, Fayette | 83 min |
| Sep 7, 4:19 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan | 56 min |
| Sep 7, 4:20 PM CDT | Severe Thunderstorm Warning | DMX | Butler | 25 min |
| Sep 7, 4:40 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 20 min |
| Sep 7, 5:07 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 53 min |
| Sep 7, 5:14 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan | 31 min |
| Sep 7, 6:53 PM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 52 min |
| Sep 7, 7:00 PM CDT | Tornado Warning | OAX | Page | 45 min |
| Sep 7, 7:37 PM CDT | Severe Thunderstorm Warning | DMX | Adams, Cass | 43 min |
| Sep 7, 8:13 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Union | 42 min |
| Sep 7, 8:26 PM CDT | Severe Thunderstorm Warning | DMX | Madison | 44 min |
| Sep 7, 8:28 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur | 47 min |
| Sep 7, 8:43 PM CDT | Severe Thunderstorm Warning | DMX | Story | 52 min |
| Sep 7, 8:51 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Polk, Warren | 44 min |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 9.0 hours before the alert went out and 245 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, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Audubon, Cass, Fremont, Harrison, Mills, Montgomery and 2 more | 3 hr |
| Sep 7, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | Cedar, Clinton, Dubuque, Jackson, Johnson, Jones and 1 more | 6 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 Iowa, 2001Severe Thunderstorm Watches in Wisconsin, 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.