Alert archive / Iowa / Mesoscale Discussions in 2005
Mesoscale Discussion 431
The Storm Prediction Center issued this mesoscale discussion at Mar 30, 2005, 10:46 AM CST for 4 states. It was in force for 119 min.
The area
The outline as issued.
The facts
- Issued
- Mar 30, 2005, 10:46 AM CST (16:46 UTC)
- Expired
- Mar 30, 2005, 12:45 PM CST
- In force
- 119 min
- Issued by
- the Storm Prediction Center
All 68 counties
Allamakee County, IA, Appanoose County, IA, Benton County, IA, Black Hawk County, IA, Bremer County, IA, Buchanan County, IA, Cedar County, IA, Chickasaw County, IA, Clayton County, IA, Clinton County, IA, Davis County, IA, Delaware County, IA, Des Moines County, IA, Dubuque County, IA, Fayette County, IA, Henry County, IA, Iowa County, IA, Jackson County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Lee County, IA, Linn County, IA, Louisa County, IA, Mahaska County, IA, Monroe County, IA, Muscatine County, IA, Poweshiek County, IA, Scott County, IA, Tama County, IA, Van Buren County, IA, Wapello County, IA, Washington County, IA, Winneshiek County, IA, Adams County, IL, Brown County, IL, Carroll County, IL, Cass County, IL, Fulton County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Jo Daviess County, IL, Knox County, IL, Mason County, IL, McDonough County, IL, Mercer County, IL, Peoria County, IL, Rock Island County, IL, Schuyler County, IL, Stark County, IL, Stephenson County, IL, Warren County, IL, Whiteside County, IL, Adair County, MO, Clark County, MO, Knox County, MO, Lewis County, MO, Putnam County, MO, Schuyler County, MO, Scotland County, MO, Crawford County, WI, Dane County, WI, Grant County, WI, Green County, WI, Iowa County, WI, Lafayette County, WI
The radar
The Quad Cities radar (KDVN), 62 km from the middle of the area, began a volume at 16:46 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 4.8 hours before the alert went out and 62 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1316 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 316 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
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 |
|---|---|---|---|---|
| Mar 30, 11:05 AM CST | Tornado Watch | SPC | Bureau, Carroll, Fulton, Hancock, Henderson, Henry and 15 more | 5 hr |
| Mar 30, 12:08 PM CST | Mesoscale Discussion | SPC | Bond, Calhoun, Cass, Champaign, Christian, Clark and 49 more | 2 hr |
| Mar 30, 12:55 PM CST | Tornado Watch | SPC | Bond, Boone, Bureau, Champaign, Christian, Clark and 49 more | 7 hr |
| Mar 30, 1:23 PM CST | Mesoscale Discussion | SPC | Bureau, Carroll, Fulton, Hancock, Henderson, Henry and 15 more | 97 min |
| Mar 30, 2:15 PM CST | Tornado Watch | SPC | Boone, Bureau, Carroll, DeKalb, Henry, Jo Daviess and 11 more | 6 hr |
| Mar 30, 3:18 PM CST | Mesoscale Discussion | SPC | Boone, Champaign, Clark, Coles, Cook, Crawford and 28 more | 117 min |
| Mar 30, 3:54 PM CST | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Jo Daviess, Lee, McHenry and 4 more | 66 min |
| Mar 30, 5:24 PM CST | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clay, Coles and 30 more | 2 hr |
| Mar 30, 6:03 AM CST | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 32 more | 117 min |
| Mar 30, 8:40 AM CST | Severe Thunderstorm Watch | SPC | Adair, Adams, Audubon, Boone, Butler, Calhoun and 38 more | 5 hr |
| Mar 30, 10:50 AM CST | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Calhoun, Carroll and 29 more | 85 min |
| Mar 30, 1:14 PM CST | Mesoscale Discussion | SPC | Boone, Butler, Cerro Gordo, Floyd, Franklin, Hamilton and 7 more | 61 min |
| Mar 30, 2:00 PM CST | Mesoscale Discussion | SPC | Boone, Butler, Cerro Gordo, Floyd, Franklin, Hamilton and 7 more | 30 min |
Nearby
Mesoscale Discussions in Iowa, 2005Mesoscale Discussions in Illinois, 2005Mesoscale Discussions in Missouri, 2005Every mesoscale discussion 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.