Alert archive / Illinois / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 286
The Storm Prediction Center issued this severe thunderstorm watch at May 25, 2004, 1:05 PM CDT for 18 counties in Illinois; 10 counties in Missouri. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 25, 2004, 1:05 PM CDT (18:05 UTC)
- Expired
- May 25, 2004, 7:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 28 counties
Bond County, IL, Calhoun County, IL, Christian County, IL, Clinton County, IL, Fayette County, IL, Greene County, IL, Jefferson County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Perry County, IL, Randolph County, IL, Saint Clair County, IL, Shelby County, IL, Washington County, IL, City of Saint Louis, MO, Crawford County, MO, Franklin County, MO, Jefferson County, MO, Lincoln County, MO, Montgomery County, MO, Pike County, MO, Saint Charles County, MO, Saint Louis County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 36 km from the middle of the area, began a volume at 18:06 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.
Warnings issued inside it
18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 1:25 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles, Warren | 65 min |
| May 25, 1:54 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 51 min |
| May 25, 1:57 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 48 min |
| May 25, 2:05 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 40 min |
| May 25, 2:42 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 63 min |
| May 25, 2:47 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 28 min |
| May 25, 3:16 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Washington | 59 min |
| May 25, 3:21 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Saint Clair, Washington | 54 min |
| May 25, 3:42 PM CDT | Severe Thunderstorm Warning | LSX | Crawford | 33 min |
| May 25, 3:47 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 43 min |
| May 25, 4:04 PM CDT | Severe Thunderstorm Warning | LSX | Randolph | 56 min |
| May 25, 4:05 PM CDT | Severe Thunderstorm Warning | PAH | Jefferson | 40 min |
| May 25, 4:13 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 32 min |
| May 25, 4:17 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Gasconade | 58 min |
| May 25, 4:28 PM CDT | Tornado Warning | LSX | Randolph | 47 min |
| May 25, 4:40 PM CDT | Tornado Warning | PAH | Jefferson | 35 min |
| May 25, 4:58 PM CDT | Flash Flood Warning | LSX | Jefferson | 3 hr |
| May 25, 5:16 PM CDT | Flash Flood Warning | LSX | Monroe | 5 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
Lincoln, IL (KILX), launched 12:00Z, 6.1 hours before the alert went out and 205 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
- 951 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- -7 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 |
|---|---|---|---|---|
| May 24, 8:15 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Hancock, Henderson, McDonough and 3 more | 90 min |
| May 24, 10:26 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Champaign and 36 more | 64 min |
| May 24, 10:45 PM CDT | Tornado Watch | SPC | Bond, Brown, Calhoun, Cass, Champaign, Christian and 27 more | 5 hr |
| May 24, 11:45 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Cass, Champaign, Christian, Clark and 24 more | 90 min |
| May 25, 3:00 AM CDT | Severe Thunderstorm Watch | SPC | Champaign, Clark, Clay, Coles, Crawford, Cumberland and 15 more | 3 hr |
| May 25, 9:19 AM CDT | Mesoscale Discussion | SPC | Edwards, Gallatin, Hamilton, Hardin, Lawrence, Pope and 4 more | 86 min |
| May 25, 2:39 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more | 96 min |
| May 25, 3:00 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Clay, Clinton, Crawford, Edwards, Franklin and 22 more | 6 hr |
| May 25, 3:16 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Christian, Clinton, Fayette, Greene and 12 more | 89 min |
| May 25, 5:03 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Clay, Clinton, Crawford, Edwards and 25 more | 87 min |
| May 25, 6:04 PM CDT | Mesoscale Discussion | SPC | Bond, Clinton, Madison, Monroe, Perry, Randolph and 2 more | 56 min |
| May 24, 10:10 PM CDT | Severe Thunderstorm Watch | SPC | Barton, Bates, Cass, Cedar, Dade, Henry and 6 more | 6 hr |
| May 25, 12:00 AM CDT | Mesoscale Discussion | SPC | Barton, Bates, Cass, Cedar, Dade, Henry and 6 more | 90 min |
| May 25, 2:17 AM CDT | Mesoscale Discussion | SPC | Barton, Bates, Cedar, Dade, Henry, Jasper and 3 more | 118 min |
| May 25, 11:12 AM CDT | Mesoscale Discussion | SPC | Benton, Boone, Callaway, Camden, Cedar, Cole and 25 more | 93 min |
Nearby
Severe Thunderstorm Watches in Illinois, 2004Severe Thunderstorm Watches in Missouri, 2004Every severe thunderstorm watch in 2004
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.