Alert archive / Iowa / Mesoscale Discussions in 2019
Mesoscale Discussion 2012
The Storm Prediction Center issued this mesoscale discussion at Sep 24, 2019, 6:33 PM CDT for 4 states. It was in force for 117 min.
The area
The outline as issued.
The facts
- Issued
- Sep 24, 2019, 6:33 PM CDT (23:33 UTC)
- Expired
- Sep 24, 2019, 8:30 PM CDT
- In force
- 117 min
- Issued by
- the Storm Prediction Center
All 90 counties
Adair County, IA, Adams County, IA, Audubon County, IA, Boone County, IA, Buena Vista County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cerro Gordo County, IA, Cherokee County, IA, Clay County, IA, Crawford County, IA, Dallas County, IA, Dickinson County, IA, Emmet County, IA, Floyd County, IA, Franklin County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Harrison County, IA, Humboldt County, IA, Ida County, IA, Kossuth County, IA, Madison County, IA, Mills County, IA, Mitchell County, IA, Monona County, IA, Montgomery County, IA, O'Brien County, IA, Palo Alto County, IA, Pocahontas County, IA, Polk County, IA, Pottawattamie County, IA, Sac County, IA, Shelby County, IA, Story County, IA, Union County, IA, Webster County, IA, Winnebago County, IA, Woodbury County, IA, Worth County, IA, Wright County, IA, Anoka County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chisago County, MN, Cottonwood County, MN, Dakota County, MN, Dodge County, MN, Faribault County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Jackson 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, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Wright County, MN, Burt County, NE, Cass County, NE, Douglas County, NE, Lancaster County, NE, Sarpy County, NE, Saunders County, NE, Washington County, NE, Barron County, WI, Dunn County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Saint Croix County, WI
The radar
The Des Moines radar (KDMX), 133 km from the middle of the area, began a volume at 23:32 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, 11.6 hours before the alert went out and 201 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
- 498 J/kg
- Mixed-layer CIN
- -185 J/kg
- Mixed-layer LCL
- 1159 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 241 m²/s²
- 0-3 km storm-relative helicity
- 245 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
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 24, 3:13 PM CDT | Mesoscale Discussion | SPC | Allamakee, Bremer, Buena Vista, Butler, Cerro Gordo, Chickasaw and 17 more | 3 hr |
| Sep 24, 4:43 PM CDT | Tornado Watch | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Butler and 55 more | 7 hr |
| Sep 24, 5:16 PM CDT | Mesoscale Discussion | SPC | Beltrami, Clearwater, Kittson, Koochiching, Lake of the Woods, Mahnomen and 6 more | 2 hr |
| Sep 24, 5:30 PM CDT | Mesoscale Discussion | SPC | Gage, Jefferson, Johnson, Lancaster, Nemaha, Otoe and 4 more | 60 min |
| Sep 24, 5:42 PM CDT | Severe Thunderstorm Watch | SPC | Gage, Jefferson, Johnson, Lancaster, Nemaha, Otoe and 3 more | 6 hr |
| Sep 24, 6:52 PM CDT | Mesoscale Discussion | SPC | Ashland, Chippewa, Clark, Florence, Forest, Iron and 17 more | 53 min |
Nearby
Mesoscale Discussions in Iowa, 2019Mesoscale Discussions in Minnesota, 2019Mesoscale Discussions in Nebraska, 2019Every mesoscale discussion in 2019
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.