Alert archive / Missouri / Mesoscale Discussions in 2003
Mesoscale Discussion 374
The Storm Prediction Center issued this mesoscale discussion at Apr 4, 2003, 1:12 PM CST for 41 counties in Illinois; 44 counties in Missouri. It was in force for 93 min.
The area
The outline as issued.
The facts
- Issued
- Apr 4, 2003, 1:12 PM CST (19:12 UTC)
- Expired
- Apr 4, 2003, 2:45 PM CST
- In force
- 93 min
- Issued by
- the Storm Prediction Center
All 85 counties
Bond County, IL, Brown County, IL, Calhoun County, IL, Cass County, IL, Champaign County, IL, Christian County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Fayette County, IL, Ford County, IL, Greene County, IL, Jasper County, IL, Jersey County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Monroe County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Piatt County, IL, Pike County, IL, Randolph County, IL, Saint Clair County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Shelby County, IL, Tazewell County, IL, Washington County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, Camden County, MO, Christian County, MO, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Franklin County, MO, Gasconade County, MO, Greene County, MO, Hickory County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Laclede County, MO, Lawrence County, MO, Lincoln County, MO, Maries County, MO, Miller County, MO, Moniteau County, MO, Montgomery County, MO, Morgan County, MO, Osage County, MO, Phelps County, MO, Pike County, MO, Polk County, MO, Pulaski County, MO, Ralls County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Shannon County, MO, Stone County, MO, Texas County, MO, Warren County, MO, Washington County, MO, Webster County, MO, Wright County, MO
The radar
The St Louis radar (KLSX), 54 km from the middle of the area, began a volume at 19:14 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
Springfield, MO (KSGF), launched 12:00Z, 7.2 hours before the alert went out and 286 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
- 722 J/kg
- Mixed-layer CIN
- -267 J/kg
- Mixed-layer LCL
- 771 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 383 m²/s²
- 0-3 km storm-relative helicity
- 361 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 |
|---|---|---|---|---|
| Apr 4, 7:23 AM CST | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Champaign and 55 more | 97 min |
| Apr 4, 9:47 AM CST | Mesoscale Discussion | SPC | Clark, Coles, Crawford, Cumberland, Douglas, Edgar and 9 more | 58 min |
| Apr 4, 11:10 AM CST | Mesoscale Discussion | SPC | Bond, Calhoun, Cass, Champaign, Christian, Clinton and 24 more | 95 min |
| Apr 4, 12:05 PM CST | Tornado Watch | SPC | Adams, Brown, Calhoun, Cass, Greene, Jersey and 10 more | 5 hr |
| Apr 4, 1:29 PM CST | Mesoscale Discussion | SPC | Bureau, Cook, DeKalb, DuPage, Grundy, Kane and 8 more | 91 min |
| Apr 4, 2:35 PM CST | Tornado Watch | SPC | Bond, Champaign, Christian, Clark, Clay, Clinton and 26 more | 5 hr |
| Apr 4, 3:10 PM CST | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Coles, Cumberland and 25 more | 2 hr |
| Apr 4, 4:25 PM CST | Tornado Watch | SPC | Alexander, Bond, Clay, Clinton, Edwards, Franklin and 24 more | 6 hr |
| Apr 4, 5:11 PM CST | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clay, Clinton and 24 more | 2 hr |
| Apr 3, 8:39 PM CST | Mesoscale Discussion | SPC | Adair, Andrew, Atchison, Buchanan, Caldwell, Carroll and 20 more | 2 hr |
| Apr 3, 9:20 PM CST | Severe Thunderstorm Watch | SPC | Adair, Andrew, Atchison, Buchanan, Caldwell, Clay and 17 more | 6 hr |
| Apr 3, 11:44 PM CST | Mesoscale Discussion | SPC | Andrew, Atchison, Buchanan, Caldwell, Clinton, Daviess and 13 more | 2 hr |
| Apr 4, 1:47 AM CST | Mesoscale Discussion | SPC | Andrew, Atchison, Buchanan, Caldwell, Clinton, Daviess and 12 more | 88 min |
| Apr 4, 4:43 PM CST | Mesoscale Discussion | SPC | Dunklin, Pemiscot | 3 hr |
Nearby
Mesoscale Discussions in Missouri, 2003Mesoscale Discussions in Illinois, 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.