Alert archive / Illinois / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 593
The Storm Prediction Center issued this severe thunderstorm watch at Jun 25, 2003, 5:15 PM CDT for 50 counties in Illinois; 14 counties in Missouri. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 25, 2003, 5:15 PM CDT (22:15 UTC)
- Expired
- Jun 25, 2003, 10:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 64 counties
Adams County, IL, Boone County, IL, Brown County, IL, Bureau County, IL, Calhoun County, IL, Cass County, IL, Christian County, IL, Cook County, IL, DeKalb County, IL, DeWitt County, IL, DuPage County, IL, Ford County, IL, Fulton County, IL, Greene County, IL, Grundy County, IL, Henry 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, Marshall County, IL, Mason County, IL, McDonough County, IL, McHenry County, IL, McLean County, IL, Menard County, IL, Montgomery County, IL, Morgan County, IL, Ogle County, IL, Peoria County, IL, Pike County, IL, Putnam County, IL, Saint Clair County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Stark County, IL, Tazewell County, IL, Will County, IL, Winnebago County, IL, Woodford County, IL, Audrain County, MO, Callaway County, MO, City of Saint Louis, MO, Cole County, MO, Franklin County, MO, Gasconade County, MO, Lincoln County, MO, Montgomery County, MO, Osage County, MO, Pike County, MO, Ralls County, MO, Saint Charles County, MO, Saint Louis County, MO, Warren County, MO
The radar
The Lincoln radar (KILX), 77 km from the middle of the area, began a volume at 22:14 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.
Warnings issued inside it
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 8:18 PM CDT | Flash Flood Warning | LSX | Audrain, Pike, Ralls | 6 hr |
| Jun 25, 8:35 PM CDT | Flash Flood Warning | LSX | Lincoln | 6 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 10.3 hours before the alert went out and 184 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
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, 4:52 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Bureau, Calhoun, Cass and 70 more | 113 min |
| 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
Severe Thunderstorm Watches in Illinois, 2003Severe Thunderstorm Watches in Missouri, 2003Every severe thunderstorm watch 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.