Alert archive / Illinois / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 508
The Storm Prediction Center issued this severe thunderstorm watch at Aug 31, 2013, 3:43 PM CDT for 40 counties in Illinois; 25 counties in Indiana. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 31, 2013, 3:43 PM CDT (20:43 UTC)
- Expired
- Aug 31, 2013, 11:15 PM CDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 65 counties
Bond County, IL, Cass 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, Jasper County, IL, Lawrence County, IL, Logan County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Mason County, IL, McLean County, IL, Menard County, IL, Monroe County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Piatt County, IL, Richland County, IL, Saint Clair County, IL, Sangamon County, IL, Shelby County, IL, Tazewell County, IL, Vermilion County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, Boone County, IN, Brown County, IN, Clay County, IN, Daviess County, IN, Fountain County, IN, Gibson County, IN, Greene County, IN, Hamilton County, IN, Hendricks County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Pike County, IN, Putnam County, IN, Sullivan County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN
The radar
The Lincoln radar (KILX), 107 km from the middle of the area, began a volume at 20:44 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 4:19 PM CDT | Severe Thunderstorm Warning | IND | Boone, Hendricks, Montgomery, Putnam | 26 min |
| Aug 31, 4:24 PM CDT | Severe Thunderstorm Warning | ILX | Champaign, Vermilion | 66 min |
| Aug 31, 4:26 PM CDT | Severe Thunderstorm Warning | IND | Marion | 34 min |
| Aug 31, 6:04 PM CDT | Severe Thunderstorm Warning | ILX | Douglas, Edgar, Vermilion | 41 min |
| Aug 31, 6:26 PM CDT | Severe Thunderstorm Warning | IND | Fountain, Parke, Vermillion | 49 min |
| Aug 31, 6:43 PM CDT | Severe Thunderstorm Warning | ILX | Edgar | 47 min |
| Aug 31, 8:08 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Fayette | 52 min |
| Aug 31, 8:09 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 51 min |
| Aug 31, 8:41 PM CDT | Severe Thunderstorm Warning | ILX | Effingham | 49 min |
| Aug 31, 8:47 PM CDT | Severe Thunderstorm Warning | IND | Greene, Lawrence, Monroe | 28 min |
| Aug 31, 8:55 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Fayette, Marion, Washington | 50 min |
| Aug 31, 8:57 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Saint Clair, Washington | 48 min |
| Aug 31, 9:02 PM CDT | Severe Thunderstorm Warning | ILX | Clay, Effingham, Jasper | 43 min |
| Aug 31, 9:17 PM CDT | Tornado Warning | IND | Martin | 28 min |
| Aug 31, 11:04 PM CDT | Severe Thunderstorm Warning | IND | Daviess, Knox | 41 min |
| Aug 31, 11:05 PM CDT | Severe Thunderstorm Warning | PAH | Edwards, Hamilton, Wabash, Wayne, White | 40 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 |
|---|---|---|---|---|
| Aug 30, 7:10 PM CDT | Mesoscale Discussion | SPC | Ford, Grundy, Iroquois, Kankakee, Kendall, LaSalle and 2 more | 65 min |
| Aug 30, 8:32 PM CDT | Mesoscale Discussion | SPC | DeKalb, Grundy, Kankakee, Kendall, LaSalle, Lee and 3 more | 58 min |
| Aug 31, 2:24 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Cass, Champaign, Christian, Clark and 49 more | 2 hr |
| Aug 31, 6:05 PM CDT | Mesoscale Discussion | SPC | Bond, Clinton, Jackson, Monroe, Perry, Randolph and 2 more | 85 min |
| Aug 31, 6:09 PM CDT | Mesoscale Discussion | SPC | Champaign, Christian, Clark, Coles, Crawford, Cumberland and 17 more | 66 min |
Nearby
Severe Thunderstorm Watches in Illinois, 2013Severe Thunderstorm Watches in Indiana, 2013Every severe thunderstorm watch in 2013
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.