Alert archive / Iowa / Severe Thunderstorm Watches in 2005
Severe Thunderstorm Watch 672
The Storm Prediction Center issued this severe thunderstorm watch at Jul 24, 2005, 4:50 PM CDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 24, 2005, 4:50 PM CDT (21:50 UTC)
- Expired
- Jul 24, 2005, 9:39 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 61 counties
Boone County, IA, Buena Vista County, IA, Butler County, IA, Calhoun County, IA, Carroll County, IA, Cerro Gordo County, IA, Cherokee County, IA, Clay County, IA, Crawford County, IA, Emmet County, IA, Floyd County, IA, Franklin County, IA, Greene County, IA, Grundy County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Harrison County, IA, Humboldt County, IA, Ida County, IA, Kossuth County, IA, Marshall County, IA, Mitchell County, IA, Monona County, IA, O'Brien County, IA, Palo Alto County, IA, Plymouth County, IA, Pocahontas County, IA, Sac County, IA, Shelby County, IA, Sioux County, IA, Story County, IA, Webster County, IA, Winnebago County, IA, Woodbury County, IA, Worth County, IA, Wright County, IA, Freeborn County, MN, Mower County, MN, Antelope County, NE, Boone County, NE, Burt County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Knox County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Pierce County, NE, Platte County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE, Clay County, SD, Union County, SD, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 128 km from the middle of the area, began a volume at 21:52 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 |
|---|---|---|---|---|
| Jul 24, 5:42 PM CDT | Tornado Warning | DMX | Webster | 27 min |
| Jul 24, 5:48 PM CDT | Severe Thunderstorm Warning | DMX | Sac | 45 min |
| Jul 24, 6:17 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 44 min |
| Jul 24, 6:30 PM CDT | Tornado Warning | DMX | Crawford | 45 min |
| Jul 24, 6:50 PM CDT | Severe Thunderstorm Warning | DMX | Franklin, Hardin | 41 min |
| Jul 24, 7:17 PM CDT | Severe Thunderstorm Warning | DMX | Crawford | 43 min |
| Jul 24, 9:09 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Yankton | 16 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
Omaha, NE (KOAX), launched 12:00Z, 9.8 hours before the alert went out and 139 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
- 699 J/kg
- Mixed-layer CIN
- -380 J/kg
- Mixed-layer LCL
- 1888 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -42 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 10:33 AM CDT | Mesoscale Discussion | SPC | Bremer, Buena Vista, Butler, Cerro Gordo, Cherokee, Chickasaw and 23 more | 117 min |
| Jul 24, 4:10 PM CDT | Mesoscale Discussion | SPC | Audubon, Black Hawk, Boone, Bremer, Buchanan, Buena Vista and 36 more | 95 min |
| Jul 24, 6:26 PM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Chickasaw, Clayton and 5 more | 64 min |
| Jul 23, 11:02 PM CDT | Mesoscale Discussion | SPC | Carlton, Pine | 118 min |
| Jul 24, 3:30 AM CDT | Severe Thunderstorm Watch | SPC | Lincoln, Rock | 2 hr |
| Jul 24, 5:22 AM CDT | Mesoscale Discussion | SPC | Lincoln, Pipestone, Rock | 83 min |
| Jul 24, 3:14 AM CDT | Mesoscale Discussion | SPC | Aurora, Brule, Davison, Gregory, Jerauld, Kingsbury and 3 more | 91 min |
| Jul 24, 2:14 PM CDT | Mesoscale Discussion | SPC | Butte, Corson, Dewey, Haakon, Harding, Lawrence and 4 more | 2 hr |
| Jul 24, 2:50 PM CDT | Severe Thunderstorm Watch | SPC | Butte, Harding, Lawrence, Meade, Perkins | 7 hr |
Nearby
Severe Thunderstorm Watches in Iowa, 2005Severe Thunderstorm Watches in Nebraska, 2005Severe Thunderstorm Watches in South Dakota, 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.