Alert archive / Minnesota / Mesoscale Discussions in 2007
Mesoscale Discussion 1795
The Storm Prediction Center issued this mesoscale discussion at Aug 18, 2007, 8:03 PM CDT for 8 counties in Iowa; 34 counties in Minnesota; 6 counties in Wisconsin. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 18, 2007, 8:03 PM CDT (01:03 UTC)
- Expired
- Aug 18, 2007, 11:00 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 48 counties
Allamakee County, IA, Dickinson County, IA, Emmet County, IA, Howard County, IA, Mitchell County, IA, Winnebago County, IA, Winneshiek County, IA, Worth County, IA, Blue Earth County, MN, Brown County, MN, Carver County, MN, Cottonwood County, MN, Dakota County, MN, Dodge County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Houston County, MN, Jackson County, MN, Le Sueur County, MN, Lincoln County, MN, Lyon County, MN, Martin County, MN, McLeod County, MN, Mower County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Olmsted County, MN, Pipestone County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Rock County, MN, Scott County, MN, Sibley County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Watonwan County, MN, Winona County, MN, Crawford County, WI, Iowa County, WI, La Crosse County, WI, Richland County, WI, Sauk County, WI, Vernon County, WI
The radar
The Minneapolis radar (KMPX), 122 km from the middle of the area, began a volume at 01:05 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, 1.1 hours before the alert went out and 348 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
- 1801 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 1509 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 60 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 18, 11:10 PM CDT | Mesoscale Discussion | SPC | Buena Vista, Calhoun, Cerro Gordo, Cherokee, Clay, Dickinson and 21 more | 110 min |
| Aug 19, 6:12 AM CDT | Mesoscale Discussion | SPC | Black Hawk, Bremer, Buchanan, Butler, Chickasaw, Clayton and 8 more | 93 min |
| Aug 19, 1:20 PM CDT | Mesoscale Discussion | SPC | Appanoose, Benton, Cedar, Chickasaw, Clarke, Clayton and 33 more | 3 hr |
Nearby
Mesoscale Discussions in Minnesota, 2007Mesoscale Discussions in Iowa, 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.