Alert archive / Iowa / Severe Thunderstorm Watches in 2005
Severe Thunderstorm Watch 402
The Storm Prediction Center issued this severe thunderstorm watch at Jun 4, 2005, 11:45 PM CDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 4, 2005, 11:45 PM CDT (04:45 UTC)
- Expired
- Jun 5, 2005, 5:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 46 counties
Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Crawford County, IA, Dickinson County, IA, Harrison County, IA, Ida County, IA, Lyon County, IA, Monona County, IA, O'Brien County, IA, Osceola County, IA, Plymouth County, IA, Sac County, IA, Shelby County, IA, Sioux County, IA, Woodbury County, IA, Cottonwood County, MN, Jackson County, MN, Murray County, MN, Nobles County, MN, Pipestone County, MN, Rock County, MN, Burt County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Madison County, NE, Pierce County, NE, Platte County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE, Clay County, SD, Lake County, SD, Lincoln County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 117 km from the middle of the area, began a volume at 04:45 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
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 11:55 PM CDT | Flash Flood Warning | FSD | Lyon, Sioux | 3 hr |
| Jun 5, 12:02 AM CDT | Severe Thunderstorm Warning | FSD | Sioux | 29 min |
| Jun 5, 2:07 AM CDT | Severe Thunderstorm Warning | OAX | Dodge | 26 min |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 4.8 hours before the alert went out and 137 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
- 1467 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 1297 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 6.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 7:00 PM CDT | Tornado Watch | SPC | Adair, Audubon, Black Hawk, Boone, Bremer, Buena Vista and 43 more | 7 hr |
| Jun 4, 7:55 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Cedar and 24 more | 2 hr |
| Jun 4, 8:15 PM CDT | Tornado Watch | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Cedar and 27 more | 8 hr |
| Jun 4, 9:18 PM CDT | Mesoscale Discussion | SPC | Appanoose, Decatur, Fremont, Lucas, Monroe, Page and 3 more | 87 min |
| Jun 4, 10:00 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Cedar and 28 more | 90 min |
| Jun 4, 10:23 PM CDT | Mesoscale Discussion | SPC | Appanoose, Decatur, Monroe, Page, Ringgold, Taylor and 1 more | 52 min |
| Jun 5, 12:55 AM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Bremer, Buchanan, Cedar and 22 more | 95 min |
| Jun 5, 12:19 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Butler, Cerro Gordo, Chickasaw, Clayton and 14 more | 86 min |
| Jun 5, 12:50 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Bremer, Butler, Chickasaw, Clayton, Fayette and 4 more | 6 hr |
| Jun 5, 3:21 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Butler, Chickasaw, Clayton, Fayette and 4 more | 84 min |
| Jun 5, 6:07 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Chickasaw, Clayton, Fayette, Howard and 2 more | 53 min |
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.