Alert archive / Illinois / Mesoscale Discussions in 2015
Mesoscale Discussion 1126
The Storm Prediction Center issued this mesoscale discussion at Jun 22, 2015, 8:16 PM CDT for 27 counties in Illinois; 23 counties in Iowa; Clark County, Schuyler County, Scotland County, Missouri. It was in force for 59 min.
The area
The outline as issued.
The facts
- Issued
- Jun 22, 2015, 8:16 PM CDT (01:16 UTC)
- Expired
- Jun 22, 2015, 9:15 PM CDT
- In force
- 59 min
- Issued by
- the Storm Prediction Center
All 53 counties
Appanoose County, IA, Cedar County, IA, Davis County, IA, Des Moines County, IA, Henry County, IA, Iowa County, IA, Jasper County, IA, Jefferson County, IA, Johnson County, IA, Keokuk County, IA, Lee County, IA, Louisa County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Monroe County, IA, Muscatine County, IA, Poweshiek County, IA, Scott County, IA, Tama County, IA, Van Buren County, IA, Wapello County, IA, Washington County, IA, Bureau County, IL, DeWitt County, IL, Fulton County, IL, Grundy County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Knox County, IL, LaSalle County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, Marshall County, IL, Mason County, IL, McDonough County, IL, McLean County, IL, Menard County, IL, Mercer County, IL, Peoria County, IL, Piatt County, IL, Putnam County, IL, Rock Island County, IL, Schuyler County, IL, Stark County, IL, Tazewell County, IL, Warren County, IL, Woodford County, IL, Clark County, MO, Schuyler County, MO, Scotland County, MO
The radar
The Quad Cities radar (KDVN), 73 km from the middle of the area, began a volume at 01:19 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
Davenport, (KDVN), launched 00:00Z, 1.3 hours before the alert went out and 79 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
- 1958 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 925 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 401 m²/s²
- 0-3 km storm-relative helicity
- 441 m²/s²
- Significant tornado parameter
- 5.7
- Supercell composite
- 17.5
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 22, 7:31 PM CDT | Mesoscale Discussion | SPC | Cook, Lake | 59 min |
| Jun 22, 7:34 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Hancock, Pike, Schuyler | 56 min |
| Jun 22, 7:57 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Pike | 4 hr |
| Jun 22, 8:17 PM CDT | Tornado Watch | SPC | Iroquois, Kankakee, Will | 6 hr |
| Jun 22, 9:41 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Pike, Scott | 64 min |
| Jun 22, 10:00 PM CDT | Mesoscale Discussion | SPC | Champaign, Cook, Douglas, Ford, Iroquois, Kankakee and 2 more | 60 min |
| Jun 23, 10:40 AM CDT | Mesoscale Discussion | SPC | Atchison, Holt, Nodaway | 95 min |
Nearby
Mesoscale Discussions in Illinois, 2015Mesoscale Discussions in Iowa, 2015Mesoscale Discussions in Missouri, 2015Every mesoscale discussion in 2015
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.