Alert archive / Illinois / Mesoscale Discussions in 2003
Mesoscale Discussion 1509
The Storm Prediction Center issued this mesoscale discussion at Jun 25, 2003, 4:52 PM CDT for 76 counties in Illinois; 21 counties in Indiana; 23 counties in Missouri. It was in force for 113 min.
The area
The outline as issued.
The facts
- Issued
- Jun 25, 2003, 4:52 PM CDT (21:52 UTC)
- Expired
- Jun 25, 2003, 6:45 PM CDT
- In force
- 113 min
- Issued by
- the Storm Prediction Center
All 120 counties
Adams County, IL, Bond County, IL, Brown County, IL, Bureau County, IL, Calhoun County, IL, Cass County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Cook County, IL, Crawford County, IL, Cumberland County, IL, DeKalb County, IL, DeWitt County, IL, Douglas County, IL, DuPage County, IL, Edgar County, IL, Effingham County, IL, Fayette County, IL, Ford County, IL, Franklin County, IL, Fulton County, IL, Greene County, IL, Grundy County, IL, Hamilton County, IL, Iroquois County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Jersey County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Knox County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Marshall County, IL, Mason County, IL, McDonough County, IL, McLean County, IL, Menard County, IL, Monroe County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Peoria County, IL, Perry County, IL, Piatt County, IL, Pike County, IL, Putnam County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Stark County, IL, Tazewell County, IL, Union County, IL, Vermilion County, IL, Washington County, IL, Wayne County, IL, Will County, IL, Williamson County, IL, Woodford County, IL, Benton County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Fountain County, IN, Fulton County, IN, Jasper County, IN, Lake County, IN, Montgomery County, IN, Newton County, IN, Parke County, IN, Porter County, IN, Pulaski County, IN, Putnam County, IN, Starke County, IN, Sullivan County, IN, Tippecanoe County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN, White County, IN, Audrain County, MO, Callaway County, MO, Cape Girardeau County, MO, City of Saint Louis, MO, Crawford County, MO, Franklin County, MO, Gasconade County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Madison County, MO, Maries County, MO, Montgomery County, MO, Osage County, MO, Perry County, MO, Pike County, MO, Ralls County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Warren County, MO, Washington County, MO
The radar
The Lincoln radar (KILX), 38 km from the middle of the area, began a volume at 21:56 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
Davenport, (KDVN), launched 12:00Z, 9.9 hours before the alert went out and 208 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
- 875 J/kg
- Mixed-layer CIN
- -121 J/kg
- Mixed-layer LCL
- 1114 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 109 m²/s²
- 0-3 km storm-relative helicity
- 99 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 |
|---|---|---|---|---|
| Jun 25, 11:50 AM CDT | Mesoscale Discussion | SPC | Boone, Carroll, Henderson, Henry, Jo Daviess, Lee and 7 more | 115 min |
| Jun 25, 12:05 PM CDT | Severe Thunderstorm Watch | SPC | Carroll, Henderson, Henry, Jo Daviess, Mercer, Ogle and 5 more | 6 hr |
| Jun 25, 12:45 PM CDT | Severe Thunderstorm Watch | SPC | Hancock | 5 hr |
| Jun 25, 2:43 PM CDT | Mesoscale Discussion | SPC | Adams, Boone, Bureau, Carroll, Hancock, Henderson and 13 more | 2 hr |
| Jun 25, 5:15 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Boone, Brown, Bureau, Calhoun, Cass and 44 more | 5 hr |
| Jun 25, 10:36 AM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Bates, Buchanan, Caldwell, Carroll and 22 more | 114 min |
| Jun 25, 6:52 PM CDT | Mesoscale Discussion | SPC | Barry, Christian, Jasper, Lawrence, McDonald, Newton and 1 more | 83 min |
Nearby
Mesoscale Discussions in Illinois, 2003Mesoscale Discussions in Missouri, 2003Mesoscale Discussions in Indiana, 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.