Alert archive / Iowa / Mesoscale Discussions in 2007
Mesoscale Discussion 1244
The Storm Prediction Center issued this mesoscale discussion at Jun 21, 2007, 5:42 PM CDT for 4 states. It was in force for 93 min.
The area
The outline as issued.
The facts
- Issued
- Jun 21, 2007, 5:42 PM CDT (22:42 UTC)
- Expired
- Jun 21, 2007, 7:15 PM CDT
- In force
- 93 min
- Issued by
- the Storm Prediction Center
All 60 counties
Allamakee 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, 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, 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, Bureau County, IL, Carroll County, IL, Fulton County, IL, Henderson County, IL, Henry County, IL, Jo Daviess County, IL, Knox County, IL, Lee County, IL, Marshall County, IL, McDonough County, IL, Mercer County, IL, Ogle County, IL, Peoria County, IL, Putnam County, IL, Rock Island County, IL, Stark County, IL, Stephenson County, IL, Tazewell County, IL, Warren County, IL, Whiteside County, IL, Woodford County, IL, Houston County, MN, Crawford County, WI, Grant County, WI, Green County, WI, Iowa County, WI, Lafayette County, WI, Richland County, WI, Vernon County, WI
The radar
The Quad Cities radar (KDVN), 71 km from the middle of the area, began a volume at 22:42 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, 10.7 hours before the alert went out and 75 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
- 683 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 1072 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 |
|---|---|---|---|---|
| Jun 21, 9:57 AM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Champaign, Cook, DeKalb and 42 more | 33 min |
| Jun 21, 12:27 PM CDT | Mesoscale Discussion | SPC | Boone, Carroll, DeKalb, Jo Daviess, Kane, McHenry and 3 more | 63 min |
| Jun 21, 3:25 PM CDT | Mesoscale Discussion | SPC | Jo Daviess | 35 min |
| Jun 21, 3:55 PM CDT | Severe Thunderstorm Watch | SPC | Henderson, Mercer, Rock Island, Warren | 3 hr |
| Jun 21, 6:47 PM CDT | Severe Thunderstorm Watch | SPC | Carroll, Hancock, Henderson, Henry, Jo Daviess, Knox and 6 more | 4 hr |
| Jun 20, 11:30 PM CDT | Mesoscale Discussion | SPC | Howard, Mitchell, Winnebago, Worth | 90 min |
| Jun 21, 4:27 AM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Howard, Mitchell, Winneshiek | 8 hr |
| Jun 21, 9:10 AM CDT | Mesoscale Discussion | SPC | Clay, Dickinson, Lyon, O'Brien, Osceola, Sioux | 35 min |
| Jun 21, 9:38 AM CDT | Severe Thunderstorm Watch | SPC | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 6 hr |
| Jun 21, 11:55 AM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 16 more | 50 min |
| Jun 21, 11:59 AM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 36 more | 8 hr |
| Jun 21, 2:13 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 50 more | 62 min |
| Jun 21, 3:15 PM CDT | Mesoscale Discussion | SPC | Cherokee, Clay, Dickinson, Ida, Lyon, O'Brien and 4 more | 30 min |
| Jun 20, 8:28 PM CDT | Mesoscale Discussion | SPC | Blue Earth, Dodge, Goodhue, Le Sueur, Olmsted, Rice and 2 more | 92 min |
| Jun 21, 2:10 AM CDT | Mesoscale Discussion | SPC | Big Stone, Lac qui Parle, Stevens, Traverse, Yellow Medicine | 95 min |
| Jun 21, 2:29 AM CDT | Severe Thunderstorm Watch | SPC | Big Stone, Traverse, Wilkin | 8 hr |
| Jun 21, 3:55 AM CDT | Mesoscale Discussion | SPC | Big Stone, Blue Earth, Brown, Carver, Chippewa, Cottonwood and 32 more | 95 min |
| Jun 21, 7:14 AM CDT | Mesoscale Discussion | SPC | Blue Earth, Brown, Chippewa, Cottonwood, Faribault, Jackson and 11 more | 91 min |
| Jun 21, 11:08 AM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Brown, Carver, Chippewa, Dakota and 25 more | 67 min |
| Jun 20, 7:25 PM CDT | Mesoscale Discussion | SPC | Adams, Barron, Buffalo, Chippewa, Clark, Dunn and 18 more | 95 min |
Nearby
Mesoscale Discussions in Iowa, 2007Mesoscale Discussions in Illinois, 2007Mesoscale Discussions in Wisconsin, 2007Every mesoscale discussion in 2007
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.