Alert archive / Illinois / Mesoscale Discussions in 2005
Mesoscale Discussion 2233
The Storm Prediction Center issued this mesoscale discussion at Sep 19, 2005, 3:02 PM CDT for 12 counties in Illinois; 11 counties in Indiana. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- Sep 19, 2005, 3:02 PM CDT (20:02 UTC)
- Expired
- Sep 19, 2005, 4:30 PM CDT
- In force
- 88 min
- Issued by
- the Storm Prediction Center
All 23 counties
Champaign County, IL, DeWitt County, IL, Ford County, IL, Grundy County, IL, Iroquois County, IL, Kankakee County, IL, Kendall County, IL, LaSalle County, IL, Livingston County, IL, McLean County, IL, Vermilion County, IL, Will County, IL, Benton County, IN, Carroll County, IN, Jasper County, IN, Lake County, IN, Newton County, IN, Porter County, IN, Pulaski County, IN, Starke County, IN, Tippecanoe County, IN, Warren County, IN, White County, IN
The radar
The Chicago radar (KLOT), 84 km from the middle of the area, began a volume at 20:01 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 12:00Z, 8.0 hours before the alert went out and 102 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
- 357 J/kg
- Mixed-layer CIN
- -217 J/kg
- Mixed-layer LCL
- 613 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 433 m²/s²
- 0-3 km storm-relative helicity
- 545 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 11.5
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 |
|---|---|---|---|---|
| Sep 18, 8:13 PM CDT | Mesoscale Discussion | SPC | Adams, Hancock, Henderson, McDonough, Mercer, Schuyler and 1 more | 62 min |
| Sep 19, 1:34 AM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, Cass, Christian, Coles, DeWitt and 30 more | 86 min |
| Sep 19, 11:49 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Fulton, Hancock, Henderson and 13 more | 86 min |
| Sep 19, 1:00 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Cass, Fulton, Hancock, Henderson and 11 more | 5 hr |
| Sep 19, 3:25 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Coles, DeWitt, Douglas, Edgar, Ford and 9 more | 6 hr |
| Sep 19, 3:48 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Bureau, Cass, Fulton, Hancock and 14 more | 87 min |
| Sep 19, 5:20 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Christian, Clinton, Effingham, Fayette and 11 more | 55 min |
| Sep 19, 5:50 PM CDT | Severe Thunderstorm Watch | SPC | Calhoun, Christian, Greene, Jersey, Logan, Macoupin and 7 more | 5 hr |
| Sep 19, 5:54 PM CDT | Mesoscale Discussion | SPC | Cass, Champaign, Christian, Clark, Coles, Crawford and 16 more | 96 min |
| Sep 19, 11:28 AM CDT | Mesoscale Discussion | SPC | Adams, Allen, Blackford, DeKalb, Elkhart, Fulton and 14 more | 92 min |
Nearby
Mesoscale Discussions in Illinois, 2005Mesoscale Discussions in Indiana, 2005Every mesoscale discussion in 2005
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.