Alert archive / Iowa / Severe Thunderstorm Watches in 2005
Severe Thunderstorm Watch 558
The Storm Prediction Center issued this severe thunderstorm watch at Jun 29, 2005, 9:15 PM CDT for 49 counties in Iowa; Crawford County, Wisconsin. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 29, 2005, 9:15 PM CDT (02:15 UTC)
- Expired
- Jun 30, 2005, 3:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 50 counties
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, Davis County, IA, Decatur County, IA, Delaware County, IA, Fayette County, IA, Floyd County, IA, Franklin County, IA, Grundy County, IA, Hamilton County, IA, Hardin County, IA, Howard County, IA, Iowa County, IA, Jasper County, IA, Jefferson County, IA, Johnson 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, 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, Washington County, IA, Wayne County, IA, Winneshiek County, IA, Worth County, IA, Crawford County, WI
The radar
The Des Moines radar (KDMX), 53 km from the middle of the area, began a volume at 02:16 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
21 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 9:19 PM CDT | Severe Thunderstorm Warning | DMX | Butler, Grundy | 59 min |
| Jun 29, 9:27 PM CDT | Severe Thunderstorm Warning | DMX | Cerro Gordo | 28 min |
| Jun 29, 9:49 PM CDT | Severe Thunderstorm Warning | DMX | Bremer | 60 min |
| Jun 29, 10:00 PM CDT | Severe Thunderstorm Warning | DMX | Union | 31 min |
| Jun 29, 10:11 PM CDT | Severe Thunderstorm Warning | DMX | Jasper | 49 min |
| Jun 29, 10:13 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 47 min |
| Jun 29, 10:22 PM CDT | Severe Thunderstorm Warning | DMX | Marshall | 41 min |
| Jun 29, 10:41 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 40 min |
| Jun 29, 10:41 PM CDT | Severe Thunderstorm Warning | DMX | Poweshiek, Tama | 49 min |
| Jun 29, 11:01 PM CDT | Severe Thunderstorm Warning | DVN | Benton | 59 min |
| Jun 29, 11:01 PM CDT | Severe Thunderstorm Warning | ARX | Crawford, Vernon | 47 min |
| Jun 29, 11:04 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Union | 63 min |
| Jun 29, 11:14 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Taylor | 67 min |
| Jun 29, 11:33 PM CDT | Severe Thunderstorm Warning | DVN | Linn | 57 min |
| Jun 29, 11:41 PM CDT | Severe Thunderstorm Warning | DMX | Lucas, Warren | 52 min |
| Jun 29, 11:45 PM CDT | Severe Thunderstorm Warning | DVN | Buchanan, Delaware | 60 min |
| Jun 29, 11:55 PM CDT | Severe Thunderstorm Warning | DMX | Marion | 53 min |
| Jun 30, 12:05 AM CDT | Severe Thunderstorm Warning | DMX | Monroe | 42 min |
| Jun 30, 12:18 AM CDT | Severe Thunderstorm Warning | DMX | Decatur, Ringgold | 59 min |
| Jun 30, 12:22 AM CDT | Severe Thunderstorm Warning | DMX | Mahaska | 54 min |
| Jun 30, 12:53 AM CDT | Severe Thunderstorm Warning | DVN | Keokuk | 45 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 2.3 hours before the alert went out and 215 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
- 1049 J/kg
- Mixed-layer CIN
- -131 J/kg
- Mixed-layer LCL
- 1913 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 224 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 8:59 PM CDT | Mesoscale Discussion | SPC | Allamakee, Appanoose, Benton, Black Hawk, Bremer, Buchanan and 29 more | 91 min |
| Jun 29, 9:23 PM CDT | Mesoscale Discussion | SPC | Emmet, Kossuth, Winnebago | 2 hr |
| Jun 29, 10:28 PM CDT | Mesoscale Discussion | SPC | Cass, Fremont, Montgomery, Page, Taylor | 62 min |
| Jun 30, 12:46 PM CDT | Mesoscale Discussion | SPC | Appanoose, Davis, Decatur, Fremont, Lee, Page and 4 more | 119 min |
| Jun 29, 7:25 PM CDT | Severe Thunderstorm Watch | SPC | Bayfield, Burnett, Douglas, Sawyer, Washburn | 8 hr |
| Jun 29, 8:00 PM CDT | Tornado Watch | SPC | Barron, Buffalo, Chippewa, Dunn, Eau Claire, La Crosse and 5 more | 7 hr |
| Jun 29, 11:23 PM CDT | Mesoscale Discussion | SPC | Adams, Clark, Columbia, Dane, Green, Green Lake and 18 more | 67 min |
| Jun 29, 11:40 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Clark, Columbia, Dane, Green, Iowa and 16 more | 5 hr |
| Jun 29, 11:54 PM CDT | Mesoscale Discussion | SPC | Ashland, Bayfield, Burnett, Douglas, Sawyer, Washburn | 2 hr |
| Jun 30, 12:50 AM CDT | Severe Thunderstorm Watch | SPC | Brown, Calumet, Dodge, Fond du Lac, Green Lake, Jefferson and 12 more | 4 hr |
Nearby
Severe Thunderstorm Watches in Iowa, 2005Severe Thunderstorm Watches in Wisconsin, 2005Every severe thunderstorm watch in 2005
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.