Alert archive / Iowa / Mesoscale Discussions in 2016
Mesoscale Discussion 1527
The Storm Prediction Center issued this mesoscale discussion at Aug 11, 2016, 9:07 PM CDT for 5 counties in Illinois; 53 counties in Iowa; 9 counties in Nebraska. It was in force for 53 min.
The area
The outline as issued.
The facts
- Issued
- Aug 11, 2016, 9:07 PM CDT (02:07 UTC)
- Expired
- Aug 11, 2016, 10:00 PM CDT
- In force
- 53 min
- Issued by
- the Storm Prediction Center
All 67 counties
Adair County, IA, Adams County, IA, Appanoose County, IA, Audubon County, IA, Benton County, IA, Boone County, IA, Cass County, IA, Cedar County, IA, Clarke County, IA, Clinton County, IA, Dallas County, IA, Davis County, IA, Decatur County, IA, Des Moines County, IA, Dubuque County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Henry County, IA, Iowa County, IA, Jackson County, IA, Jasper County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Linn County, IA, Louisa County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Mills County, IA, Monroe County, IA, Montgomery County, IA, Muscatine County, IA, Page County, IA, Polk County, IA, Pottawattamie County, IA, Poweshiek County, IA, Ringgold County, IA, Scott County, IA, Shelby County, IA, Story County, IA, Tama County, IA, Taylor County, IA, Union County, IA, Van Buren County, IA, Wapello County, IA, Warren County, IA, Washington County, IA, Wayne County, IA, Carroll County, IL, Jo Daviess County, IL, Mercer County, IL, Rock Island County, IL, Whiteside County, IL, Cass County, NE, Douglas County, NE, Gage County, NE, Johnson County, NE, Lancaster County, NE, Otoe County, NE, Saline County, NE, Sarpy County, NE, Seward County, NE
The radar
The Des Moines radar (KDMX), 67 km from the middle of the area, began a volume at 02:08 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, 2.1 hours before the alert went out and 193 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
- 3289 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1414 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 9.1
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 |
|---|---|---|---|---|
| Aug 11, 9:17 PM CDT | Mesoscale Discussion | SPC | Arthur, Blaine, Boyd, Brown, Cherry, Garden and 8 more | 58 min |
Nearby
Mesoscale Discussions in Iowa, 2016Mesoscale Discussions in Nebraska, 2016Mesoscale Discussions in Illinois, 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.