Alert archive / Iowa / Mesoscale Discussions in 2017
Mesoscale Discussion 256
The Storm Prediction Center issued this mesoscale discussion at Mar 6, 2017, 3:35 PM CST for 63 counties in Iowa; 35 counties in Minnesota; Pierce County, Saint Croix County, Wisconsin. It was in force for 115 min.
The area
The outline as issued.
The facts
- Issued
- Mar 6, 2017, 3:35 PM CST (21:35 UTC)
- Expired
- Mar 6, 2017, 5:30 PM CST
- In force
- 115 min
- Issued by
- the Storm Prediction Center
All 100 counties
Adair County, IA, Adams County, IA, Audubon County, IA, Benton County, IA, Black Hawk County, IA, Boone County, IA, Bremer County, IA, Buchanan County, IA, Buena Vista County, IA, Butler County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cerro Gordo County, IA, Chickasaw County, IA, Clarke County, IA, Clay County, IA, Crawford County, IA, Dallas County, IA, Decatur County, IA, Dickinson County, IA, Emmet County, IA, Fayette County, IA, Floyd County, IA, Franklin County, IA, Greene County, IA, Grundy County, IA, Guthrie County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Howard County, IA, Humboldt County, IA, Iowa County, IA, Jasper County, IA, Keokuk County, IA, Kossuth County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Mitchell County, IA, Monroe County, IA, Montgomery County, IA, Palo Alto County, IA, Pocahontas County, IA, Polk County, IA, Pottawattamie County, IA, Poweshiek County, IA, Ringgold County, IA, Sac County, IA, Shelby County, IA, Story County, IA, Tama County, IA, Union County, IA, Wapello County, IA, Warren County, IA, Webster County, IA, Winnebago County, IA, Winneshiek County, IA, Worth County, IA, Wright County, IA, Anoka County, MN, Benton County, MN, 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, Jackson County, MN, Kandiyohi County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Mower County, MN, Nicollet County, MN, Olmsted County, MN, Ramsey County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Wright County, MN, Pierce County, WI, Saint Croix County, WI
The radar
The Des Moines radar (KDMX), 107 km from the middle of the area, began a volume at 21:37 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 12:00Z, 9.6 hours before the alert went out and 236 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
- 788 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 437 m²/s²
- 0-3 km storm-relative helicity
- 464 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Mar 6, 1:08 PM CST | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Benton, Black Hawk and 52 more | 3 hr |
| Mar 6, 1:54 PM CST | Tornado Watch | SPC | Adair, Adams, Allamakee, Appanoose, Audubon, Benton and 75 more | 8 hr |
| Mar 6, 1:37 PM CST | Mesoscale Discussion | SPC | Anoka, Benton, Blue Earth, Brown, Carver, Chippewa and 33 more | 2 hr |
| Mar 6, 2:43 PM CST | Tornado Watch | SPC | Anoka, Benton, Blue Earth, Brown, Carver, Chisago and 38 more | 7 hr |
| Mar 6, 5:03 PM CST | Mesoscale Discussion | SPC | Aitkin, Carlton, Cass, Crow Wing, Hubbard, Pine | 57 min |
Nearby
Mesoscale Discussions in Iowa, 2017Mesoscale Discussions in Minnesota, 2017Mesoscale Discussions in Wisconsin, 2017Every mesoscale discussion in 2017
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.