Alert archive / Illinois / Tornado Watches in 2009
Tornado Watch 369
The Storm Prediction Center issued this tornado watch at Jun 10, 2009, 7:46 PM CDT for 57 counties in Illinois; 14 counties in Missouri. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 10, 2009, 7:46 PM CDT (00:46 UTC)
- Expired
- Jun 11, 2009, 1:54 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 71 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, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Gallatin County, IL, Greene County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Jersey County, IL, Johnson County, IL, Lawrence County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Massac County, IL, Menard County, IL, Monroe County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Perry County, IL, Piatt 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, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Perry County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO
The radar
The St Louis radar (KLSX), 100 km from the middle of the area, began a volume at 00:49 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
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 8:27 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 37 min |
| Jun 10, 8:31 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 44 min |
| Jun 10, 8:58 PM CDT | Flash Flood Warning | LSX | Monroe, Saint Clair | 6 hr |
| Jun 10, 9:25 PM CDT | Severe Thunderstorm Warning | PAH | Saline, Williamson | 65 min |
| Jun 10, 9:53 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair | 24 min |
| Jun 10, 10:02 PM CDT | Tornado Warning | LSX | Fayette | 28 min |
| Jun 10, 11:10 PM CDT | Severe Thunderstorm Warning | PAH | Bollinger, Cape Girardeau, Perry | 35 min |
| Jun 11, 12:33 AM CDT | Flash Flood Warning | PAH | Gallatin, Hamilton, Saline, White | 3 hr |
| Jun 11, 12:43 AM CDT | Severe Thunderstorm Warning | ILX | Champaign | 30 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 7:10 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Calhoun, Clay, Clinton, Effingham and 25 more | 65 min |
| Jun 10, 8:58 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Christian, Clark, Clay, Clinton and 36 more | 62 min |
| Jun 11, 1:00 PM CDT | Mesoscale Discussion | SPC | Bond, Clay, Effingham, Fayette, Macoupin, Montgomery | 60 min |
| Jun 11, 3:07 PM CDT | Mesoscale Discussion | SPC | Clark, Clay, Crawford, Edgar, Edwards, Effingham and 10 more | 53 min |
| Jun 11, 3:42 PM CDT | Mesoscale Discussion | SPC | Clark, Clay, Crawford, Edgar, Edwards, Effingham and 10 more | 33 min |
| Jun 11, 4:47 PM CDT | Tornado Watch | SPC | Edwards, Gallatin, Hamilton, Hardin, Saline, Wabash and 2 more | 6 hr |
| Jun 11, 6:02 PM CDT | Mesoscale Discussion | SPC | Alexander, Hardin, Massac, Pope, Pulaski | 58 min |
| Jun 10, 11:06 PM CDT | Tornado Watch | SPC | Bartholomew, Brown, Clark, Clay, Crawford, Daviess and 29 more | 5 hr |
| Jun 11, 3:15 AM CDT | Mesoscale Discussion | SPC | Clark, Crawford, Dubois, Floyd, Harrison, Jefferson and 7 more | 60 min |
| Jun 11, 7:54 AM CDT | Mesoscale Discussion | SPC | Allen, Simpson | 66 min |
| Jun 11, 11:18 AM CDT | Severe Thunderstorm Watch | SPC | Bell, Clay, Harlan, Knox, Laurel, Leslie and 6 more | 8 hr |
| Jun 11, 1:55 PM CDT | Mesoscale Discussion | SPC | Bell, Breathitt, Clay, Floyd, Harlan, Knott and 7 more | 65 min |
| Jun 11, 2:13 AM CDT | Mesoscale Discussion | SPC | Caldwell, Carroll, Chariton, Clay, Cooper, Howard and 9 more | 62 min |
Nearby
Tornado Watches in Illinois, 2009Tornado Watches in Missouri, 2009Every tornado watch in 2009
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.