Alert archive / Iowa / Mesoscale Discussions in 2011
Mesoscale Discussion 1167
The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2011, 1:39 AM CDT for 42 counties in Iowa; Sarpy County, Nebraska. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 10, 2011, 1:39 AM CDT (06:39 UTC)
- Expired
- Jun 10, 2011, 3:45 AM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 43 counties
Adair County, IA, Adams County, IA, Appanoose County, IA, Audubon County, IA, Boone County, IA, Carroll County, IA, Cass County, IA, Clarke County, IA, Crawford County, IA, Dallas County, IA, Davis County, IA, Decatur County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Harrison County, IA, Iowa County, IA, Jasper County, IA, Jefferson County, IA, Keokuk County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Mills County, IA, Monona County, IA, Monroe County, IA, Montgomery County, IA, Page County, IA, Polk County, IA, Pottawattamie County, IA, Poweshiek County, IA, Ringgold County, IA, Shelby County, IA, Story County, IA, Taylor County, IA, Union County, IA, Van Buren County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Sarpy County, NE
The radar
The Des Moines radar (KDMX), 31 km from the middle of the area, began a volume at 06:40 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, 6.7 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
- 151 J/kg
- Mixed-layer CIN
- -389 J/kg
- Mixed-layer LCL
- 539 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 426 m²/s²
- 0-3 km storm-relative helicity
- 608 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 14.0
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 |
|---|---|---|---|---|
| Jun 9, 7:43 PM CDT | Mesoscale Discussion | SPC | Appanoose, Decatur, Fremont, Page, Ringgold, Taylor and 1 more | 92 min |
| Jun 9, 9:48 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Appanoose, Audubon, Boone, Carroll and 33 more | 6 hr |
| Jun 9, 11:45 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Boone, Carroll and 33 more | 90 min |
| Jun 9, 8:09 PM CDT | Mesoscale Discussion | SPC | Sioux | 96 min |
Nearby
Mesoscale Discussions in Iowa, 2011Mesoscale Discussions in Nebraska, 2011Every mesoscale discussion in 2011
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.