Alert archive / Illinois / Severe Thunderstorm Watches in 2014
Severe Thunderstorm Watch 502
The Storm Prediction Center issued this severe thunderstorm watch at Sep 10, 2014, 3:24 PM CDT for 43 counties in Illinois; 10 counties in Indiana; 12 counties in Missouri. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 10, 2014, 3:24 PM CDT (20:24 UTC)
- Expired
- Sep 10, 2014, 9:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 65 counties
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, Ford County, IL, Greene County, IL, Iroquois County, IL, Jasper County, IL, Jefferson County, IL, Jersey County, IL, Lawrence County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, McLean County, IL, Monroe County, IL, Montgomery County, IL, Moultrie County, IL, Perry County, IL, Piatt County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Sangamon County, IL, Shelby County, IL, Vermilion County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, Benton County, IN, Cass County, IN, Fulton County, IN, Jasper County, IN, Kosciusko County, IN, Marshall County, IN, Newton County, IN, Pulaski County, IN, Starke County, IN, White County, IN, City of Saint Louis, MO, Crawford County, MO, Franklin County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Washington County, MO
The radar
The Lincoln radar (KILX), 72 km from the middle of the area, began a volume at 20:24 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
- 20%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 70%
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 |
|---|---|---|---|---|
| Sep 10, 6:54 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Madison, Saint Clair, Washington | 51 min |
| Sep 10, 7:23 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Fayette, Marion, Saint Clair, Washington | 52 min |
| Sep 10, 7:46 PM CDT | Tornado Warning | ILX | Crawford, Jasper | 29 min |
| Sep 10, 7:51 PM CDT | Severe Thunderstorm Warning | ILX | Clay, Jasper, Richland | 39 min |
| Sep 10, 7:54 PM CDT | Severe Thunderstorm Warning | PAH | Jefferson, Wayne | 51 min |
| Sep 10, 8:16 PM CDT | Severe Thunderstorm Warning | ILX | Crawford, Lawrence | 14 min |
| Sep 10, 8:36 PM CDT | Severe Thunderstorm Warning | PAH | Edwards, Wayne | 23 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 |
|---|---|---|---|---|
| Sep 10, 5:02 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Hancock, McDonough, Menard and 4 more | 118 min |
| Sep 10, 10:34 AM CDT | Mesoscale Discussion | SPC | Clark, Coles, Douglas, Edgar, Vermilion | 116 min |
| Sep 10, 1:48 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Champaign, Christian, Clark, Clay and 31 more | 117 min |
| Sep 10, 4:36 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 13 more | 84 min |
| Sep 10, 6:22 PM CDT | Mesoscale Discussion | SPC | Bond, Clark, Clay, Clinton, Coles, Crawford and 19 more | 83 min |
| Sep 10, 12:54 PM CDT | Tornado Watch | SPC | Adams, Allen, Bartholomew, Blackford, Boone, Brown and 51 more | 9 hr |
| Sep 10, 3:08 PM CDT | Mesoscale Discussion | SPC | Adams, Allen, Bartholomew, Blackford, Brown, Decatur and 24 more | 2 hr |
| Sep 10, 5:11 PM CDT | Mesoscale Discussion | SPC | Clay, Delaware, Fayette, Hamilton, Hancock, Hendricks and 13 more | 64 min |
| Sep 9, 9:00 PM CDT | Mesoscale Discussion | SPC | Andrew, Buchanan, Caldwell, Carroll, Clinton, Daviess and 7 more | 90 min |
| Sep 9, 11:28 PM CDT | Mesoscale Discussion | SPC | Buchanan, Caldwell, Carroll, Chariton, Clay, Clinton and 4 more | 32 min |
Nearby
Severe Thunderstorm Watches in Illinois, 2014Severe Thunderstorm Watches in Missouri, 2014Severe Thunderstorm Watches in Indiana, 2014Every severe thunderstorm watch in 2014
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.