Alert archive / Missouri / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 928
The Storm Prediction Center issued this severe thunderstorm watch at Sep 26, 2003, 1:20 PM CDT for 32 counties in Illinois; Des Moines County, Lee County, Iowa; 52 counties in Missouri. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 26, 2003, 1:20 PM CDT (18:20 UTC)
- Expired
- Sep 26, 2003, 7:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 86 counties
Des Moines County, IA, Lee County, IA, Adams County, IL, Bond County, IL, Brown County, IL, Bureau County, IL, Calhoun County, IL, Cass County, IL, Christian County, IL, Fulton County, IL, Greene County, IL, Hancock County, IL, Henderson County, IL, Jersey County, IL, Knox County, IL, Logan County, IL, Macoupin County, IL, Madison County, IL, Marshall County, IL, Mason County, IL, McDonough County, IL, Menard County, IL, Montgomery County, IL, Morgan County, IL, Peoria County, IL, Pike County, IL, Putnam County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Stark County, IL, Tazewell County, IL, Warren County, IL, Woodford County, IL, Adair County, MO, Audrain County, MO, Benton County, MO, Boone County, MO, Caldwell County, MO, Callaway County, MO, Camden County, MO, Carroll County, MO, Cedar County, MO, Chariton County, MO, City of Saint Louis, MO, Clark County, MO, Cole County, MO, Cooper County, MO, Daviess County, MO, Franklin County, MO, Gasconade County, MO, Grundy County, MO, Henry County, MO, Hickory County, MO, Howard County, MO, Johnson County, MO, Knox County, MO, Lafayette County, MO, Lewis County, MO, Lincoln County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Maries County, MO, Marion County, MO, Miller County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Morgan County, MO, Osage County, MO, Pettis County, MO, Pike County, MO, Polk County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saint Charles County, MO, Saint Louis County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, St. Clair County, MO, Sullivan County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 155 km from the middle of the area, began a volume at 18:22 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.
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 6.3 hours before the alert went out and 302 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2018 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 210 m²/s²
- 0-3 km storm-relative helicity
- 246 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 |
|---|---|---|---|---|
| Sep 26, 12:21 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Christian, DeWitt and 23 more | 114 min |
| Sep 26, 4:32 PM CDT | Mesoscale Discussion | SPC | Champaign, Christian, Clark, Clay, Coles, Crawford and 19 more | 88 min |
| Sep 26, 4:50 PM CDT | Tornado Watch | SPC | Bond, Champaign, Christian, Clark, Clay, Coles and 18 more | 5 hr |
| Sep 26, 5:06 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Bureau, Calhoun, Cass and 26 more | 84 min |
| Sep 26, 6:10 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 7 hr |
| Sep 26, 6:59 PM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clay, Coles and 17 more | 91 min |
| Sep 26, 2:52 PM CDT | Mesoscale Discussion | SPC | Barton, Bates, Cass, Vernon | 113 min |
| Sep 26, 2:55 PM CDT | Severe Thunderstorm Watch | SPC | Barton, Bates, Cass, Jasper, Vernon | 4 hr |
Nearby
Severe Thunderstorm Watches in Missouri, 2003Severe Thunderstorm Watches in Illinois, 2003Severe Thunderstorm Watches in Iowa, 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.