Alert archive / Iowa / Mesoscale Discussions in 2006
Mesoscale Discussion 451
The Storm Prediction Center issued this mesoscale discussion at Apr 6, 2006, 9:51 PM CDT for 5 states. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- Apr 6, 2006, 9:51 PM CDT (02:51 UTC)
- Expired
- Apr 6, 2006, 11:45 PM CDT
- In force
- 114 min
- Issued by
- the Storm Prediction Center
All 105 counties
Adair County, IA, Adams County, IA, Appanoose County, IA, Audubon County, IA, Boone County, IA, Buena Vista County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cherokee County, IA, Clarke County, IA, Clay County, IA, Crawford County, IA, Dallas County, IA, Davis County, IA, Decatur County, IA, Dickinson County, IA, Emmet County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Hamilton County, IA, Hardin County, IA, Harrison County, IA, Humboldt County, IA, Ida County, IA, Jasper County, IA, Kossuth County, IA, Lucas County, IA, Lyon County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Mills County, IA, Monona County, IA, Monroe County, IA, Montgomery County, IA, O'Brien County, IA, Osceola County, IA, Page County, IA, Palo Alto County, IA, Plymouth County, IA, Pocahontas County, IA, Polk County, IA, Pottawattamie County, IA, Poweshiek County, IA, Ringgold County, IA, Sac County, IA, Shelby County, IA, Sioux County, IA, Story County, IA, Taylor County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Webster County, IA, Woodbury County, IA, Wright County, IA, Doniphan County, KS, Leavenworth County, KS, Wyandotte County, KS, Jackson County, MN, Nobles County, MN, Rock County, MN, Adair County, MO, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Howard County, MO, Jackson County, MO, Knox County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Nodaway County, MO, Platte County, MO, Putnam County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, Sullivan County, MO, Worth County, MO, Lake County, SD, Lincoln County, SD, McCook County, SD, Minnehaha County, SD, Moody County, SD, Union County, SD
The radar
The Omaha radar (KOAX), 110 km from the middle of the area, began a volume at 02:54 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.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 2.9 hours before the alert went out and 111 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
- 753 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 2279 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 7:12 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Cass, Crawford, Fremont and 10 more | 63 min |
| Apr 6, 7:43 PM CDT | Tornado Watch | SPC | Adair, Adams, Audubon, Boone, Carroll, Cass and 18 more | 5 hr |
| Apr 6, 8:29 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Brown, Chase, Chautauqua, Clay and 28 more | 91 min |
| Apr 6, 10:21 PM CDT | Mesoscale Discussion | SPC | Linn, Miami | 84 min |
| Apr 6, 7:53 PM CDT | Mesoscale Discussion | SPC | McDonald, Newton | 97 min |
| Apr 6, 11:33 PM CDT | Tornado Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Dunklin, Iron and 9 more | 3 hr |
| Apr 7, 9:07 AM CDT | Mesoscale Discussion | SPC | Cape Girardeau, Dunklin, Mississippi, New Madrid, Pemiscot, Scott and 1 more | 113 min |
| Apr 7, 10:20 AM CDT | Tornado Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Dunklin, Iron and 14 more | 10 hr |
| Apr 7, 12:52 PM CDT | Tornado Watch | SPC | Saint Charles, Saint Louis, City of Saint Louis | 7 hr |
| Apr 7, 2:22 PM CDT | Mesoscale Discussion | SPC | Bollinger, Cape Girardeau, Dunklin, Mississippi, New Madrid, Pemiscot and 2 more | 113 min |
Nearby
Mesoscale Discussions in Iowa, 2006Mesoscale Discussions in Missouri, 2006Mesoscale Discussions in South Dakota, 2006Every mesoscale discussion in 2006
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.