Alert archive / Illinois / Mesoscale Discussions in 2003
Mesoscale Discussion 1674
The Storm Prediction Center issued this mesoscale discussion at Jul 7, 2003, 12:14 PM CDT for 5 states. It was in force for 61 min.
The area
The outline as issued.
The facts
- Issued
- Jul 7, 2003, 12:14 PM CDT (17:14 UTC)
- Expired
- Jul 7, 2003, 1:15 PM CDT
- In force
- 61 min
- Issued by
- the Storm Prediction Center
All 126 counties
Clinton County, IA, Des Moines County, IA, Lee County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Bond County, IL, Brown County, IL, Cass County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Fayette County, IL, Ford County, IL, Fulton County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Jasper County, IL, Knox County, IL, Lawrence County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Marshall County, IL, Mason County, IL, McDonough County, IL, McLean County, IL, Menard County, IL, Mercer County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Peoria County, IL, Piatt County, IL, Richland County, IL, Rock Island County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Stark County, IL, Tazewell County, IL, Vermilion County, IL, Warren County, IL, Woodford County, IL, Adams County, IN, Allen County, IN, Bartholomew County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, Daviess County, IN, DeKalb County, IN, Delaware County, IN, Fountain County, IN, Grant County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jay County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Miami County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Shelby County, IN, Steuben County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Wabash County, IN, Warren County, IN, Wells County, IN, Branch County, MI, Calhoun County, MI, Eaton County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Lenawee County, MI, Livingston County, MI, Monroe County, MI, Oakland County, MI, Washtenaw County, MI, Wayne County, MI, Allen County, OH, Auglaize County, OH, Defiance County, OH, Fulton County, OH, Henry County, OH, Lucas County, OH, Mercer County, OH, Paulding County, OH, Putnam County, OH, Van Wert County, OH, Williams County, OH, Wood County, OH
The radar
The Chicago radar (KLOT), 111 km from the middle of the area, began a volume at 17:14 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, 5.2 hours before the alert went out and 116 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
- 1626 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 1135 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Jul 6, 8:46 PM CDT | Mesoscale Discussion | SPC | Boone, Cook, DeKalb, DuPage, Ford, Grundy and 10 more | 59 min |
| Jul 7, 1:25 AM CDT | Mesoscale Discussion | SPC | Jo Daviess, Stephenson, Winnebago | 95 min |
| Jul 7, 2:40 AM CDT | Severe Thunderstorm Watch | SPC | Jo Daviess | 4 hr |
| Jul 7, 4:22 AM CDT | Mesoscale Discussion | SPC | Jo Daviess, Stephenson | 83 min |
| Jul 7, 6:23 AM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, DeKalb, Grundy, Henry, Kendall and 9 more | 97 min |
| Jul 7, 8:30 AM CDT | Mesoscale Discussion | SPC | Champaign, DeWitt, Douglas, Ford, Grundy, Iroquois and 13 more | 60 min |
| Jul 7, 8:45 AM CDT | Severe Thunderstorm Watch | SPC | Champaign, Cook, DeWitt, Ford, Grundy, Iroquois and 6 more | 4 hr |
| Jul 7, 10:14 AM CDT | Mesoscale Discussion | SPC | Champaign, DeWitt, Ford, Iroquois, McLean, Piatt and 1 more | 61 min |
| Jul 7, 2:35 PM CDT | Mesoscale Discussion | SPC | Boone, Jo Daviess, McHenry, Stephenson, Winnebago | 115 min |
| Jul 7, 3:35 PM CDT | Severe Thunderstorm Watch | SPC | Rock Island | 5 hr |
| Jul 7, 4:34 PM CDT | Mesoscale Discussion | SPC | Iroquois, Kankakee, Vermilion, Will | 56 min |
| Jul 6, 11:10 PM CDT | Severe Thunderstorm Watch | SPC | Bartholomew, Boone, Brown, Clinton, Dearborn, Decatur and 21 more | 3 hr |
| Jul 6, 11:51 PM CDT | Mesoscale Discussion | SPC | Bartholomew, Boone, Brown, Clinton, Dearborn, Decatur and 21 more | 114 min |
| Jul 7, 11:30 AM CDT | Severe Thunderstorm Watch | SPC | Fayette, Henry, Jay, Randolph, Rush, Union and 1 more | 6 hr |
| Jul 7, 5:30 PM CDT | Tornado Watch | SPC | Adams, Allen, Blackford, Carroll, Cass, Clinton and 28 more | 6 hr |
| Jul 6, 7:45 PM CDT | Tornado Watch | SPC | Clay, Dickinson, Lyon, O'Brien, Osceola, Sioux | 6 hr |
| Jul 6, 8:57 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Audubon, Boone, Buena Vista, Calhoun and 35 more | 3 hr |
| Jul 6, 9:20 PM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Audubon, Boone, Buena Vista and 62 more | 6 hr |
| Jul 6, 11:06 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Boone, Buena Vista and 62 more | 114 min |
| Jul 7, 3:30 PM CDT | Mesoscale Discussion | SPC | Adair, Adams, Appanoose, Audubon, Benton, Cass and 31 more | 3 hr |
| Jul 7, 12:54 PM CDT | Mesoscale Discussion | SPC | Dickinson, Iron | 66 min |
| Jul 7, 4:42 PM CDT | Mesoscale Discussion | SPC | Chippewa, Luce, Mackinac, Schoolcraft | 3 hr |
| Jul 7, 1:56 PM CDT | Mesoscale Discussion | SPC | Ashland, Belmont, Carroll, Champaign, Clark, Columbiana and 42 more | 94 min |
| Jul 7, 2:10 PM CDT | Severe Thunderstorm Watch | SPC | Athens, Belmont, Carroll, Columbiana, Guernsey, Harrison and 12 more | 6 hr |
| Jul 7, 5:52 PM CDT | Mesoscale Discussion | SPC | Athens, Belmont, Carroll, Columbiana, Gallia, Geauga and 15 more | 53 min |
Nearby
Mesoscale Discussions in Illinois, 2003Mesoscale Discussions in Indiana, 2003Mesoscale Discussions in Michigan, 2003Every mesoscale discussion in 2003
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.