Alert archive / Illinois / Mesoscale Discussions in 2003
Mesoscale Discussion 1750
The Storm Prediction Center issued this mesoscale discussion at Jul 9, 2003, 8:04 PM CDT for 4 states. It was in force for 56 min.
The area
The outline as issued.
The facts
- Issued
- Jul 9, 2003, 8:04 PM CDT (01:04 UTC)
- Expired
- Jul 9, 2003, 9:00 PM CDT
- In force
- 56 min
- Issued by
- the Storm Prediction Center
All 99 counties
Davis County, IA, Des Moines County, IA, Henry County, IA, Jefferson County, IA, Lee County, IA, Louisa County, IA, Muscatine County, IA, Van Buren County, IA, Washington County, IA, Adams County, IL, Bond County, IL, Brown County, IL, Calhoun 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, Greene County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Jasper County, IL, Jersey County, IL, Knox County, IL, Lawrence County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Madison 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, Pike County, IL, Putnam 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, Bartholomew County, IN, Brown County, IN, Clay County, IN, Daviess County, IN, Fountain County, IN, Greene County, IN, Hendricks County, IN, Jackson County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Sullivan County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN, Adair County, MO, Clark County, MO, Knox County, MO, Lewis County, MO, Marion County, MO, Pike County, MO, Putnam County, MO, Ralls County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, Sullivan County, MO
The radar
The Lincoln radar (KILX), 21 km from the middle of the area, began a volume at 01:06 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, 1.1 hours before the alert went out and 50 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
- 3530 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1110 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 9.6
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 9, 8:20 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Cass, Champaign, Christian, Clark and 43 more | 6 hr |
| Jul 9, 9:50 PM CDT | Severe Thunderstorm Watch | SPC | Calhoun, Christian, Greene, Jersey, Macoupin, Montgomery and 5 more | 6 hr |
| Jul 9, 10:49 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 30 more | 56 min |
| Jul 9, 11:39 PM CDT | Mesoscale Discussion | SPC | Calhoun, Jersey | 66 min |
| Jul 10, 11:13 AM CDT | Mesoscale Discussion | SPC | Clark, Dearborn, Floyd, Harrison, Jefferson, Ohio and 3 more | 2 hr |
| Jul 10, 11:30 AM CDT | Severe Thunderstorm Watch | SPC | Clark, Dearborn, Floyd, Franklin, Harrison, Jefferson and 5 more | 6 hr |
| Jul 9, 7:43 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo and 18 more | 32 min |
| Jul 9, 7:50 PM CDT | Tornado Watch | SPC | Black Hawk, Bremer, Butler, Cerro Gordo, Chickasaw, Floyd and 10 more | 5 hr |
| Jul 9, 10:00 PM CDT | Mesoscale Discussion | SPC | Black Hawk, Bremer, Buchanan, Butler, Cerro Gordo, Chickasaw and 11 more | 60 min |
| Jul 9, 8:56 PM CDT | Mesoscale Discussion | SPC | Audrain, Barry, Barton, Bates, Benton, Boone and 44 more | 94 min |
Nearby
Mesoscale Discussions in Illinois, 2003Mesoscale Discussions in Indiana, 2003Mesoscale Discussions in Missouri, 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.