Alert archive / Indiana / Mesoscale Discussions in 2012
Mesoscale Discussion 1562
The Storm Prediction Center issued this mesoscale discussion at Jul 24, 2012, 6:35 AM CDT for 10 counties in Illinois; 29 counties in Indiana; Berrien County, Michigan. It was in force for 55 min.
The area
The outline as issued.
The facts
- Issued
- Jul 24, 2012, 6:35 AM CDT (11:35 UTC)
- Expired
- Jul 24, 2012, 7:30 AM CDT
- In force
- 55 min
- Issued by
- the Storm Prediction Center
All 40 counties
Cook County, IL, DeKalb County, IL, DuPage County, IL, Grundy County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Lake County, IL, McHenry County, IL, Will County, IL, Blackford County, IN, Carroll County, IN, Cass County, IN, Clinton County, IN, Delaware County, IN, Elkhart County, IN, Fulton County, IN, Grant County, IN, Hamilton County, IN, Howard County, IN, Huntington County, IN, Jasper County, IN, Kosciusko County, IN, LaGrange County, IN, Lake County, IN, LaPorte County, IN, Madison County, IN, Marshall County, IN, Miami County, IN, Newton County, IN, Noble County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Tipton County, IN, Wabash County, IN, White County, IN, Whitley County, IN, Berrien County, MI
The radar
The Chicago radar (KLOT), 71 km from the middle of the area, began a volume at 11:37 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 11.6 hours before the alert went out and 190 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
- 545 J/kg
- Mixed-layer CIN
- -149 J/kg
- Mixed-layer LCL
- 2710 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.9
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 |
|---|---|---|---|---|
| Jul 23, 11:13 PM CDT | Mesoscale Discussion | SPC | Stephenson | 92 min |
| Jul 24, 3:32 AM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, DuPage, Grundy and 10 more | 58 min |
| Jul 24, 4:47 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Cook, DeKalb, DuPage, Kane, Kankakee and 7 more | 4 hr |
| Jul 24, 3:25 PM CDT | Mesoscale Discussion | SPC | Clay, Clinton, Crawford, Edwards, Effingham, Fayette and 20 more | 95 min |
| Jul 24, 7:00 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Allen, Blackford, Boone, Carroll, Cass and 27 more | 3 hr |
| Jul 24, 9:08 AM CDT | Mesoscale Discussion | SPC | Adams, Blackford, Delaware, Fayette, Grant, Hamilton and 11 more | 97 min |
| Jul 24, 9:35 AM CDT | Severe Thunderstorm Watch | SPC | Dearborn, Fayette, Franklin, Ripley, Union, Wayne | 3 hr |
Nearby
Mesoscale Discussions in Indiana, 2012Mesoscale Discussions in Illinois, 2012Mesoscale Discussions in Michigan, 2012Every mesoscale discussion in 2012
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.