Alert archive / Indiana / Severe Thunderstorm Watches in 2015
Severe Thunderstorm Watch 409
The Storm Prediction Center issued this severe thunderstorm watch at Jul 13, 2015, 9:17 AM CDT for 22 counties in Illinois; 39 counties in Indiana. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 13, 2015, 9:17 AM CDT (14:17 UTC)
- Expired
- Jul 13, 2015, 1:15 PM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 61 counties
Champaign County, IL, Clark County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Jasper County, IL, Lawrence County, IL, Logan County, IL, Macon County, IL, Marshall County, IL, McLean County, IL, Moultrie County, IL, Peoria County, IL, Piatt County, IL, Richland County, IL, Stark County, IL, Tazewell County, IL, Vermilion County, IL, Woodford County, IL, Bartholomew County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Clay County, IN, Clinton County, IN, Daviess County, IN, Decatur County, IN, Delaware County, IN, Fountain County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Jackson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Shelby County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN
The radar
The Indianapolis radar (KIND), 121 km from the middle of the area, began a volume at 14:19 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
- 60%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 9:26 AM CDT | Severe Thunderstorm Warning | IND | Boone, Carroll, Clinton, Fountain, Howard, Montgomery and 3 more | 49 min |
| Jul 13, 9:59 AM CDT | Severe Thunderstorm Warning | ILX | Vermilion | 31 min |
| Jul 13, 10:11 AM CDT | Severe Thunderstorm Warning | IND | Boone, Clinton, Hamilton, Hendricks, Marion, Montgomery and 2 more | 49 min |
| Jul 13, 10:17 AM CDT | Severe Thunderstorm Warning | IND | Fountain, Montgomery, Parke, Putnam | 43 min |
| Jul 13, 10:50 AM CDT | Severe Thunderstorm Warning | IND | Hancock, Hendricks, Johnson, Marion, Morgan, Shelby | 40 min |
| Jul 13, 10:57 AM CDT | Severe Thunderstorm Warning | IND | Clay, Parke, Putnam | 48 min |
| Jul 13, 11:21 AM CDT | Severe Thunderstorm Warning | IND | Bartholomew, Brown, Decatur, Jackson, Jennings, Johnson and 2 more | 54 min |
| Jul 13, 11:27 AM CDT | Severe Thunderstorm Warning | IND | Clay, Owen, Putnam | 48 min |
| Jul 13, 12:10 PM CDT | Severe Thunderstorm Warning | IND | Bartholomew, Brown, Decatur, Jackson, Jennings | 54 min |
| Jul 13, 12:12 PM CDT | Tornado Warning | IND | Jennings | 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 12:00Z, 2.3 hours before the alert went out and 85 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
- 2535 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 1016 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 194 m²/s²
- Significant tornado parameter
- 1.9
- Supercell composite
- 10.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 3:49 AM CDT | Mesoscale Discussion | SPC | Boone, Cook, DeKalb, DuPage, Grundy, Iroquois and 7 more | 116 min |
| Jul 13, 4:14 AM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 18 more | 6 hr |
| Jul 13, 7:19 AM CDT | Mesoscale Discussion | SPC | Ford, Grundy, Iroquois, Kankakee, Kendall, LaSalle and 2 more | 86 min |
| Jul 13, 11:01 AM CDT | Mesoscale Discussion | SPC | Edwards, Wabash, White | 89 min |
| Jul 13, 3:21 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Champaign, DeKalb, DeWitt and 29 more | 84 min |
| Jul 13, 4:01 PM CDT | Tornado Watch | SPC | Boone, Bureau, Carroll, Cass, Champaign, Christian and 52 more | 7 hr |
| Jul 13, 4:33 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Christian, Clinton and 14 more | 57 min |
| Jul 13, 6:20 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more | 4 hr |
| Jul 13, 6:59 PM CDT | Mesoscale Discussion | SPC | Boone, Brown, Bureau, Carroll, Cass, Champaign and 65 more | 91 min |
| Jul 13, 11:55 AM CDT | Severe Thunderstorm Watch | SPC | Clark, Crawford, Dearborn, Dubois, Floyd, Harrison and 8 more | 7 hr |
| Jul 13, 2:04 PM CDT | Mesoscale Discussion | SPC | Clark, Crawford, Dubois, Floyd, Harrison, Orange and 1 more | 86 min |
Nearby
Severe Thunderstorm Watches in Indiana, 2015Severe Thunderstorm Watches in Illinois, 2015Every severe thunderstorm watch in 2015
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.