Alert archive / Indiana / Severe Thunderstorm Watches in 2017
Severe Thunderstorm Watch 403
The Storm Prediction Center issued this severe thunderstorm watch at Jul 7, 2017, 12:45 PM CDT for 4 counties in Illinois; 38 counties in Indiana. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 7, 2017, 12:45 PM CDT (17:45 UTC)
- Expired
- Jul 7, 2017, 8:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 65 kt
All 42 counties
Ford County, IL, Iroquois County, IL, Kankakee County, IL, Vermilion County, IL, Bartholomew County, IN, Benton County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Clay County, IN, Clinton 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, Jasper County, IN, Jennings County, IN, Johnson County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Newton County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Shelby County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN
The radar
The Indianapolis radar (KIND), 92 km from the middle of the area, began a volume at 17:46 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
- 30%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
29 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 1:13 PM CDT | Severe Thunderstorm Warning | LOT | Jasper, Lake, Newton | 47 min |
| Jul 7, 1:24 PM CDT | Severe Thunderstorm Warning | IND | Carroll, Clinton, Howard, Tippecanoe | 51 min |
| Jul 7, 1:41 PM CDT | Severe Thunderstorm Warning | LOT | Jasper | 19 min |
| Jul 7, 1:50 PM CDT | Severe Thunderstorm Warning | IND | Carroll, Howard | 22 min |
| Jul 7, 1:53 PM CDT | Severe Thunderstorm Warning | IND | Boone, Hendricks, Montgomery, Putnam | 52 min |
| Jul 7, 2:01 PM CDT | Severe Thunderstorm Warning | IND | Howard, Tipton | 44 min |
| Jul 7, 2:04 PM CDT | Severe Thunderstorm Warning | IND | Delaware, Henry, Madison | 41 min |
| Jul 7, 2:10 PM CDT | Severe Thunderstorm Warning | IND | Clinton, Hamilton, Howard, Tipton | 50 min |
| Jul 7, 2:26 PM CDT | Severe Thunderstorm Warning | IND | Carroll, Clinton, Howard, Tippecanoe | 34 min |
| Jul 7, 2:38 PM CDT | Severe Thunderstorm Warning | IND | Delaware, Henry, Randolph | 38 min |
| Jul 7, 2:40 PM CDT | Severe Thunderstorm Warning | IND | Boone, Hendricks, Marion | 50 min |
| Jul 7, 2:50 PM CDT | Flash Flood Warning | IND | Carroll, Clinton, Howard, Tipton | 3 hr |
| Jul 7, 2:56 PM CDT | Severe Thunderstorm Warning | IND | Delaware, Hamilton, Hancock, Henry, Madison | 34 min |
| Jul 7, 2:58 PM CDT | Flash Flood Warning | IND | Delaware, Hamilton, Henry, Madison, Tipton | 3 hr |
| Jul 7, 2:59 PM CDT | Severe Thunderstorm Warning | IND | Boone, Clinton, Hamilton, Howard, Madison, Tipton | 31 min |
| Jul 7, 3:05 PM CDT | Severe Thunderstorm Warning | IND | Morgan, Owen, Putnam | 40 min |
| Jul 7, 3:28 PM CDT | Severe Thunderstorm Warning | IND | Delaware, Hamilton, Hancock, Henry, Madison, Marion | 32 min |
| Jul 7, 3:38 PM CDT | Severe Thunderstorm Warning | IND | Brown, Johnson, Monroe, Morgan, Owen | 52 min |
| Jul 7, 3:54 PM CDT | Severe Thunderstorm Warning | ILX | Edgar, Vermilion | 51 min |
| Jul 7, 4:24 PM CDT | Severe Thunderstorm Warning | IND | Bartholomew, Brown, Jackson, Johnson, Monroe | 51 min |
| Jul 7, 4:29 PM CDT | Severe Thunderstorm Warning | IND | Hendricks, Marion, Montgomery, Morgan, Parke, Putnam | 31 min |
| Jul 7, 4:30 PM CDT | Severe Thunderstorm Warning | IND | Decatur, Rush, Shelby | 45 min |
| Jul 7, 5:07 PM CDT | Severe Thunderstorm Warning | IND | Johnson, Morgan | 23 min |
| Jul 7, 5:24 PM CDT | Severe Thunderstorm Warning | IND | Clay, Owen, Parke, Putnam, Vigo | 38 min |
| Jul 7, 5:29 PM CDT | Severe Thunderstorm Warning | IND | Bartholomew, Johnson, Shelby | 29 min |
| Jul 7, 6:15 PM CDT | Severe Thunderstorm Warning | IND | Jackson, Jennings | 15 min |
| Jul 7, 6:21 PM CDT | Severe Thunderstorm Warning | IND | Bartholomew, Brown, Jackson, Jennings, Lawrence, Monroe | 39 min |
| Jul 7, 6:38 PM CDT | Flash Flood Warning | IND | Jackson, Jennings | 3 hr |
| Jul 7, 7:15 PM CDT | Severe Thunderstorm Warning | IND | Lawrence, Martin | 45 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, 5.8 hours before the alert went out and 126 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
- 1263 J/kg
- Mixed-layer CIN
- -94 J/kg
- Mixed-layer LCL
- 1203 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 110 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 12:19 PM CDT | Mesoscale Discussion | SPC | Champaign, Clark, Clay, Coles, Crawford, Cumberland and 14 more | 56 min |
| Jul 7, 7:51 AM CDT | Mesoscale Discussion | SPC | Adams, Allen, Blackford, Boone, Carroll, Cass and 25 more | 114 min |
| Jul 7, 8:46 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Allen, Blackford, Cass, DeKalb, Delaware and 20 more | 7 hr |
| Jul 7, 10:22 AM CDT | Mesoscale Discussion | SPC | Adams, Allen, Blackford, Cass, DeKalb, Delaware and 17 more | 53 min |
| Jul 7, 2:54 PM CDT | Mesoscale Discussion | SPC | Bartholomew, Brown, Clark, Dearborn, Decatur, Fayette and 19 more | 96 min |
| Jul 7, 3:24 PM CDT | Severe Thunderstorm Watch | SPC | Clark, Dearborn, Fayette, Floyd, Franklin, Harrison and 8 more | 7 hr |
| Jul 7, 5:34 PM CDT | Mesoscale Discussion | SPC | Clark, Floyd, Jackson, Jefferson, Jennings, Lawrence and 6 more | 86 min |
Nearby
Severe Thunderstorm Watches in Indiana, 2017Severe Thunderstorm Watches in Illinois, 2017Every severe thunderstorm watch in 2017
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.