Alert archive / Missouri / Severe Thunderstorm Watches in 2005
Severe Thunderstorm Watch 6
The Storm Prediction Center issued this severe thunderstorm watch at Jan 12, 2005, 9:45 PM CST for 20 counties in Illinois; 21 counties in Missouri. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 12, 2005, 9:45 PM CST (03:45 UTC)
- Expired
- Jan 13, 2005, 3:00 AM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 41 counties
Alexander County, IL, Bond County, IL, Clinton County, IL, Effingham County, IL, Fayette County, IL, Greene County, IL, Jackson 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, Union County, IL, Washington County, IL, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, City of Saint Louis, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, New Madrid County, MO, Oregon County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Washington County, MO, Wayne County, MO
The radar
The St Louis radar (KLSX), 119 km from the middle of the area, began a volume at 03:47 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
7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 12, 10:05 PM CST | Severe Thunderstorm Warning | LSX | Saint Louis | 40 min |
| Jan 12, 11:28 PM CST | Severe Thunderstorm Warning | LSX | Montgomery | 47 min |
| Jan 13, 12:16 AM CST | Flash Flood Warning | SGF | Dent, Howell, Maries, Oregon, Phelps, Pulaski and 2 more | 6 hr |
| Jan 13, 12:48 AM CST | Severe Thunderstorm Warning | LSX | Fayette, Marion | 27 min |
| Jan 13, 12:50 AM CST | Severe Thunderstorm Warning | ILX | Effingham, Shelby | 40 min |
| Jan 13, 1:09 AM CST | Flash Flood Warning | ILX | Clark, Clay, Coles, Crawford, Cumberland, Edgar and 4 more | 12 hr |
| Jan 13, 2:27 AM CST | Severe Thunderstorm Warning | PAH | Jefferson | 33 min |
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 00:00Z, 3.8 hours before the alert went out and 314 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
- 170 J/kg
- Mixed-layer CIN
- -123 J/kg
- Mixed-layer LCL
- 924 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 217 m²/s²
- 0-3 km storm-relative helicity
- 221 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.3
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 12, 6:02 PM CST | Mesoscale Discussion | SPC | Calhoun | 88 min |
| Jan 12, 7:34 PM CST | Mesoscale Discussion | SPC | Brown, Bureau, Cass, Cook, DeKalb, DeWitt and 24 more | 86 min |
| Jan 12, 9:28 PM CST | Mesoscale Discussion | SPC | Alexander, Bond, Clinton, Fayette, Jackson, Jersey and 9 more | 32 min |
| Jan 13, 1:02 AM CST | Mesoscale Discussion | SPC | Alexander, Bond, Clay, Clinton, Coles, Cumberland and 13 more | 88 min |
| Jan 13, 6:51 AM CST | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Fulton, Greene and 15 more | 4 hr |
| Jan 13, 11:58 AM CST | Mesoscale Discussion | SPC | Bond, Calhoun, Cass, Champaign, Christian, Clark and 45 more | 5 hr |
| Jan 12, 6:50 PM CST | Mesoscale Discussion | SPC | Adair, Caldwell, Carroll, Cass, Jackson, Lafayette and 6 more | 4 hr |
| Jan 12, 10:16 PM CST | Mesoscale Discussion | SPC | Dunklin | 59 min |
Nearby
Severe Thunderstorm Watches in Missouri, 2005Severe Thunderstorm Watches in Illinois, 2005Every severe thunderstorm watch in 2005
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.