Alert archive / Minnesota / Mesoscale Discussions in 2016
Mesoscale Discussion 1728
The Storm Prediction Center issued this mesoscale discussion at Sep 21, 2016, 6:01 PM CDT for 16 counties in Iowa; 35 counties in Minnesota; 14 counties in Wisconsin. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 21, 2016, 6:01 PM CDT (23:01 UTC)
- Expired
- Sep 21, 2016, 8:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 65 counties
Allamakee County, IA, Bremer County, IA, Butler County, IA, Cerro Gordo County, IA, Chickasaw County, IA, Clayton County, IA, Emmet County, IA, Fayette County, IA, Floyd County, IA, Hancock County, IA, Howard County, IA, Kossuth 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, Hennepin County, MN, Houston County, MN, Jackson County, MN, Le Sueur County, MN, Lyon County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Mower County, MN, Murray County, MN, Nicollet County, MN, Olmsted County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sibley County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Winona County, MN, Yellow Medicine County, MN, Buffalo County, WI, Crawford County, WI, Dunn County, WI, Eau Claire County, WI, Grant County, WI, Jackson County, WI, La Crosse County, WI, Monroe County, WI, Pepin County, WI, Pierce County, WI, Richland County, WI, Saint Croix County, WI, Trempealeau County, WI, Vernon County, WI
The radar
The Minneapolis radar (KMPX), 91 km from the middle of the area, began a volume at 23:05 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
Minneapolis, MN (KMPX), launched 12:00Z, 11.0 hours before the alert went out and 92 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
- 515 J/kg
- Mixed-layer CIN
- -331 J/kg
- Mixed-layer LCL
- 738 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.5
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 8:01 PM CDT | Mesoscale Discussion | SPC | Allamakee, Howard, Mitchell, Winneshiek, Worth | 119 min |
| Sep 20, 9:34 PM CDT | Severe Thunderstorm Watch | SPC | Allamakee, Cerro Gordo, Chickasaw, Clayton, Fayette, Floyd and 6 more | 5 hr |
| Sep 20, 11:26 PM CDT | Mesoscale Discussion | SPC | Allamakee, Clayton, Howard, Winneshiek | 2 hr |
| Sep 21, 1:33 AM CDT | Mesoscale Discussion | SPC | Allamakee, Howard, Winneshiek | 117 min |
| Sep 21, 2:00 PM CDT | Mesoscale Discussion | SPC | Allamakee, Benton, Black Hawk, Boone, Bremer, Buchanan and 56 more | 2 hr |
| Sep 21, 2:31 PM CDT | Mesoscale Discussion | SPC | Anoka, Carver, Chippewa, Chisago, Dakota, Goodhue and 15 more | 89 min |
Nearby
Mesoscale Discussions in Minnesota, 2016Mesoscale Discussions in Iowa, 2016Mesoscale Discussions in Wisconsin, 2016Every mesoscale discussion in 2016
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.