Alert archive / Iowa / Mesoscale Discussions in 2007
Mesoscale Discussion 1750
The Storm Prediction Center issued this mesoscale discussion at Aug 14, 2007, 1:23 AM CDT for 4 states. It was in force for 67 min.
The area
The outline as issued.
The facts
- Issued
- Aug 14, 2007, 1:23 AM CDT (06:23 UTC)
- Expired
- Aug 14, 2007, 2:30 AM CDT
- In force
- 67 min
- Issued by
- the Storm Prediction Center
All 78 counties
Allamakee County, IA, Benton County, IA, Black Hawk County, IA, Bremer County, IA, Buchanan County, IA, Butler County, IA, Cedar County, IA, Cerro Gordo County, IA, Chickasaw County, IA, Clayton County, IA, Clinton County, IA, Delaware County, IA, Dubuque County, IA, Fayette County, IA, Floyd County, IA, Grundy County, IA, Howard County, IA, Iowa County, IA, Jackson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Linn County, IA, Louisa County, IA, Marshall County, IA, Mitchell County, IA, Muscatine County, IA, Poweshiek County, IA, Scott County, IA, Tama County, IA, Washington County, IA, Winneshiek County, IA, Worth County, IA, Boone County, IL, Bureau County, IL, Carroll County, IL, DeKalb County, IL, Henry County, IL, Jo Daviess County, IL, Lee County, IL, Mercer County, IL, Ogle County, IL, Putnam County, IL, Rock Island County, IL, Stark County, IL, Stephenson County, IL, Whiteside County, IL, Winnebago County, IL, Dodge County, MN, Fillmore County, MN, Freeborn County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Steele County, MN, Waseca County, MN, Winona County, MN, Adams County, WI, Columbia County, WI, Crawford County, WI, Dane County, WI, Grant County, WI, Green County, WI, Iowa County, WI, Jackson County, WI, Jefferson County, WI, Juneau County, WI, La Crosse County, WI, Lafayette County, WI, Marquette County, WI, Monroe County, WI, Richland County, WI, Rock County, WI, Sauk County, WI, Trempealeau County, WI, Vernon County, WI, Waushara County, WI, Wood County, WI
The radar
The La Crosse radar (KARX), 108 km from the middle of the area, began a volume at 06:27 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 00:00Z, 6.4 hours before the alert went out and 146 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
- 396 J/kg
- Mixed-layer CIN
- -144 J/kg
- Mixed-layer LCL
- 1368 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 184 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
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 |
|---|---|---|---|---|
| Aug 14, 2:45 AM CDT | Severe Thunderstorm Watch | SPC | Bureau, Carroll, Cass, DeKalb, DeWitt, Fulton and 27 more | 4 hr |
| Aug 14, 5:13 AM CDT | Severe Thunderstorm Watch | SPC | Grundy, Kane, Kankakee, Kendall, Will | 86 min |
| Aug 14, 5:43 AM CDT | Mesoscale Discussion | SPC | Brown, Bureau, Cass, DeWitt, DuPage, Ford and 28 more | 62 min |
| Aug 13, 9:45 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 11 more | 6 hr |
| Aug 13, 11:35 PM CDT | Mesoscale Discussion | SPC | Allamakee | 85 min |
| Aug 14, 3:32 AM CDT | Mesoscale Discussion | SPC | Allamakee, Black Hawk, Bremer, Buchanan, Butler, Chickasaw and 7 more | 28 min |
| Aug 14, 3:05 PM CDT | Mesoscale Discussion | SPC | Adair, Audubon, Benton, Black Hawk, Boone, Calhoun and 28 more | 85 min |
| Aug 14, 6:54 PM CDT | Mesoscale Discussion | SPC | Adair, Appanoose, Audubon, Boone, Calhoun, Carroll and 35 more | 66 min |
| Aug 13, 8:49 PM CDT | Mesoscale Discussion | SPC | Anoka, Chisago, Dakota, Dodge, Fillmore, Goodhue and 11 more | 116 min |
Nearby
Mesoscale Discussions in Iowa, 2007Mesoscale Discussions in Wisconsin, 2007Mesoscale Discussions in Illinois, 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.