Alert archive / Illinois / Tornado Watches in 2023
Tornado Watch 41
The Storm Prediction Center issued this tornado watch at Feb 22, 2023, 12:20 PM CST for 50 counties in Illinois; 26 counties in Missouri. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 22, 2023, 12:20 PM CST (18:20 UTC)
- Expired
- Feb 22, 2023, 5:00 PM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 55 kt
All 76 counties
Alexander County, IL, Bond County, IL, Calhoun County, IL, Champaign County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Greene County, IL, Hamilton County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Jersey County, IL, Johnson County, IL, Lawrence County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Massac County, IL, Monroe County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Perry County, IL, Piatt County, IL, Pike County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Saline County, IL, Sangamon County, IL, Scott County, IL, Shelby County, IL, Union County, IL, Vermilion County, IL, Washington County, IL, Wayne County, IL, Williamson County, IL, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, City of Saint Louis, MO, Crawford County, MO, Franklin County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Perry County, MO, Pike 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, Warren County, MO, Washington County, MO, Wayne County, MO
The radar
The St Louis radar (KLSX), 82 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 10%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 10%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
23 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 22, 12:24 PM CST | Tornado Warning | LSX | Franklin, Saint Charles, Warren | 51 min |
| Feb 22, 12:34 PM CST | Tornado Warning | LSX | Lincoln, Montgomery, Warren | 56 min |
| Feb 22, 12:41 PM CST | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey | 64 min |
| Feb 22, 1:03 PM CST | Tornado Warning | LSX | Saint Charles | 27 min |
| Feb 22, 1:09 PM CST | Severe Thunderstorm Warning | PAH | Butler, Carter, Ripley, Wayne | 51 min |
| Feb 22, 1:28 PM CST | Severe Thunderstorm Warning | PAH | Butler, Wayne | 32 min |
| Feb 22, 1:53 PM CST | Severe Thunderstorm Warning | LSX | Monroe, Randolph | 52 min |
| Feb 22, 1:57 PM CST | Severe Thunderstorm Warning | LSX | Jersey, Macoupin, Madison, Montgomery | 63 min |
| Feb 22, 2:01 PM CST | Severe Thunderstorm Warning | LSX | Bond, Clinton, Madison, Monroe, Saint Clair, Washington | 59 min |
| Feb 22, 2:25 PM CST | Severe Thunderstorm Warning | PAH | Bollinger, Cape Girardeau, Scott, Stoddard | 20 min |
| Feb 22, 2:26 PM CST | Severe Thunderstorm Warning | LSX | Randolph, Saint Clair, Washington | 64 min |
| Feb 22, 2:32 PM CST | Severe Thunderstorm Warning | PAH | Jackson, Perry | 43 min |
| Feb 22, 2:40 PM CST | Severe Thunderstorm Warning | PAH | Alexander, Union | 35 min |
| Feb 22, 2:51 PM CST | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette, Marion, Washington | 54 min |
| Feb 22, 3:05 PM CST | Severe Thunderstorm Warning | PAH | Alexander, Johnson, Pulaski, Union | 40 min |
| Feb 22, 3:08 PM CST | Severe Thunderstorm Warning | ILX | Christian, Moultrie, Shelby | 40 min |
| Feb 22, 3:08 PM CST | Severe Thunderstorm Warning | PAH | Franklin, Jackson, Jefferson, Perry, Williamson | 37 min |
| Feb 22, 3:13 PM CST | Severe Thunderstorm Warning | PAH | Mississippi | 47 min |
| Feb 22, 3:17 PM CST | Severe Thunderstorm Warning | ILX | Clay, Cumberland, Effingham, Jasper, Shelby | 58 min |
| Feb 22, 3:26 PM CST | Severe Thunderstorm Warning | PAH | Hamilton, Wayne | 49 min |
| Feb 22, 3:29 PM CST | Severe Thunderstorm Warning | PAH | Massac | 46 min |
| Feb 22, 3:35 PM CST | Severe Thunderstorm Warning | ILX | Clay, Jasper, Richland | 55 min |
| Feb 22, 4:11 PM CST | Severe Thunderstorm Warning | ILX | Crawford, Lawrence | 46 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 12:00Z, 6.3 hours before the alert went out and 175 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
- 774 m above ground
- 0-6 km bulk shear
- 84 kt
- 0-1 km storm-relative helicity
- 653 m²/s²
- 0-3 km storm-relative helicity
- 724 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 22, 8:46 AM CST | Mesoscale Discussion | SPC | Boone, Jo Daviess, McHenry, Stephenson, Winnebago | 5 hr |
| Feb 22, 10:59 AM CST | Mesoscale Discussion | SPC | Champaign, Christian, Clark, Coles, Crawford, Cumberland and 11 more | 91 min |
| Feb 22, 12:04 PM CST | Mesoscale Discussion | SPC | Bond, Calhoun, Christian, Clinton, Fayette, Greene and 19 more | 56 min |
| Feb 22, 2:27 PM CST | Mesoscale Discussion | SPC | Alexander, Bond, Champaign, Christian, Clark, Clay and 40 more | 2 hr |
| Feb 22, 3:27 PM CST | Mesoscale Discussion | SPC | Boone, Lake, McHenry, Winnebago | 4 hr |
| Feb 22, 9:58 AM CST | Mesoscale Discussion | SPC | Dent, Douglas, Howell, Laclede, Oregon, Ozark and 7 more | 92 min |
Nearby
Tornado Watches in Illinois, 2023Tornado Watches in Missouri, 2023Every tornado watch in 2023
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.