Alert archive / Indiana / Severe Thunderstorm Watches in 2007
Severe Thunderstorm Watch 648
The Storm Prediction Center issued this severe thunderstorm watch at Aug 24, 2007, 3:04 PM CDT for 4 states. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 24, 2007, 3:04 PM CDT (20:04 UTC)
- Expired
- Aug 24, 2007, 10:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 87 counties
Ford County, IL, Iroquois County, IL, Adams County, IN, Allen County, IN, Benton County, IN, Blackford County, IN, Boone County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, DeKalb County, IN, Delaware County, IN, Elkhart County, IN, Fountain County, IN, Fulton County, IN, Grant County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jasper County, IN, Jay County, IN, Johnson County, IN, Kosciusko County, IN, LaGrange County, IN, Madison County, IN, Marion County, IN, Marshall County, IN, Miami County, IN, Montgomery County, IN, Morgan County, IN, Newton County, IN, Noble County, IN, Owen County, IN, Parke County, IN, Pulaski County, IN, Putnam County, IN, Randolph County, IN, Shelby County, IN, Starke County, IN, Steuben County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Vigo County, IN, Wabash County, IN, Warren County, IN, Wells County, IN, White County, IN, Whitley County, IN, Branch County, MI, Calhoun County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Saint Clair County, MI, Saint Joseph County, MI, Sanilac County, MI, Shiawassee County, MI, Washtenaw County, MI, Wayne County, MI, Allen County, OH, Defiance County, OH, Fulton County, OH, Hancock County, OH, Henry County, OH, Lucas County, OH, Ottawa County, OH, Paulding County, OH, Putnam County, OH, Sandusky County, OH, Van Wert County, OH, Williams County, OH, Wood County, OH
The radar
The Northern Indiana radar (KIWX), 28 km from the middle of the area, began a volume at 20:07 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
- 5%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 40%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
52 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 3:04 PM CDT | Tornado Warning | GRR | Eaton | 56 min |
| Aug 24, 3:05 PM CDT | Severe Thunderstorm Warning | IWX | LaGrange, Steuben | 55 min |
| Aug 24, 3:17 PM CDT | Severe Thunderstorm Warning | IWX | White | 58 min |
| Aug 24, 3:29 PM CDT | Severe Thunderstorm Warning | IWX | LaGrange, Noble | 61 min |
| Aug 24, 3:37 PM CDT | Severe Thunderstorm Warning | GRR | Ingham | 53 min |
| Aug 24, 3:40 PM CDT | Severe Thunderstorm Warning | IWX | Whitley | 49 min |
| Aug 24, 3:41 PM CDT | Severe Thunderstorm Warning | IWX | Cass, Fulton | 64 min |
| Aug 24, 3:42 PM CDT | Severe Thunderstorm Warning | DTX | Shiawassee | 63 min |
| Aug 24, 3:42 PM CDT | Severe Thunderstorm Warning | GRR | Jackson | 63 min |
| Aug 24, 3:44 PM CDT | Severe Thunderstorm Warning | IND | Carroll | 46 min |
| Aug 24, 3:46 PM CDT | Tornado Warning | GRR | Ingham | 44 min |
| Aug 24, 4:00 PM CDT | Severe Thunderstorm Warning | IWX | Allen, DeKalb, Steuben | 60 min |
| Aug 24, 4:01 PM CDT | Severe Thunderstorm Warning | DTX | Livingston | 59 min |
| Aug 24, 4:02 PM CDT | Severe Thunderstorm Warning | IWX | Steuben | 58 min |
| Aug 24, 4:03 PM CDT | Tornado Warning | IND | Carroll | 17 min |
| Aug 24, 4:06 PM CDT | Tornado Warning | IWX | DeKalb, Steuben | 32 min |
| Aug 24, 4:07 PM CDT | Severe Thunderstorm Warning | DTX | Washtenaw | 68 min |
| Aug 24, 4:08 PM CDT | Severe Thunderstorm Warning | IND | Tippecanoe | 41 min |
| Aug 24, 4:09 PM CDT | Severe Thunderstorm Warning | DTX | Genesee | 66 min |
| Aug 24, 4:15 PM CDT | Severe Thunderstorm Warning | IWX | Cass, Miami | 60 min |
| Aug 24, 4:15 PM CDT | Tornado Warning | DTX | Shiawassee | 23 min |
| Aug 24, 4:22 PM CDT | Tornado Warning | DTX | Genesee | 53 min |
| Aug 24, 4:26 PM CDT | Severe Thunderstorm Warning | DTX | Oakland | 85 min |
| Aug 24, 4:27 PM CDT | Severe Thunderstorm Warning | IWX | Defiance, Williams | 63 min |
| Aug 24, 4:31 PM CDT | Tornado Warning | DTX | Livingston | 32 min |
| Aug 24, 4:35 PM CDT | Severe Thunderstorm Warning | DTX | Lenawee | 70 min |
| Aug 24, 4:43 PM CDT | Severe Thunderstorm Warning | IWX | Allen | 62 min |
| Aug 24, 4:45 PM CDT | Severe Thunderstorm Warning | DTX | Wayne | 90 min |
| Aug 24, 4:46 PM CDT | Severe Thunderstorm Warning | IWX | Fulton | 59 min |
| Aug 24, 4:50 PM CDT | Severe Thunderstorm Warning | IWX | Huntington, Wabash | 47 min |
| Aug 24, 4:56 PM CDT | Tornado Warning | DTX | Oakland | 49 min |
| Aug 24, 5:02 PM CDT | Tornado Warning | IWX | Fulton, Williams | 43 min |
| Aug 24, 5:03 PM CDT | Severe Thunderstorm Warning | DTX | Lapeer | 72 min |
| Aug 24, 5:04 PM CDT | Severe Thunderstorm Warning | IWX | Grant, Miami | 56 min |
| Aug 24, 5:07 PM CDT | Severe Thunderstorm Warning | IWX | Henry | 46 min |
| Aug 24, 5:09 PM CDT | Severe Thunderstorm Warning | DTX | Macomb | 68 min |
| Aug 24, 5:14 PM CDT | Severe Thunderstorm Warning | DTX | Washtenaw | 31 min |
| Aug 24, 5:14 PM CDT | Tornado Warning | DTX | Lapeer | 53 min |
| Aug 24, 5:15 PM CDT | Severe Thunderstorm Warning | CLE | Lucas | 75 min |
| Aug 24, 5:16 PM CDT | Severe Thunderstorm Warning | DTX | Monroe | 58 min |
| Aug 24, 5:19 PM CDT | Severe Thunderstorm Warning | IWX | Adams, Wells | 56 min |
| Aug 24, 5:22 PM CDT | Tornado Warning | CLE | Lucas | 53 min |
| Aug 24, 5:32 PM CDT | Severe Thunderstorm Warning | DTX | Saint Clair | 62 min |
| Aug 24, 5:42 PM CDT | Severe Thunderstorm Warning | IWX | Allen | 49 min |
| Aug 24, 5:43 PM CDT | Severe Thunderstorm Warning | IND | Clay, Parke, Vermillion, Vigo | 32 min |
| Aug 24, 5:44 PM CDT | Severe Thunderstorm Warning | CLE | Wood | 76 min |
| Aug 24, 5:53 PM CDT | Severe Thunderstorm Warning | IWX | Blackford, Wells | 37 min |
| Aug 24, 5:54 PM CDT | Severe Thunderstorm Warning | IND | Sullivan, Vigo | 36 min |
| Aug 24, 5:58 PM CDT | Severe Thunderstorm Warning | CLE | Ottawa | 43 min |
| Aug 24, 6:07 PM CDT | Severe Thunderstorm Warning | IND | Montgomery, Parke, Putnam | 38 min |
| Aug 24, 7:16 PM CDT | Severe Thunderstorm Warning | CLE | Hancock | 27 min |
| Aug 24, 8:25 PM CDT | Severe Thunderstorm Warning | IWX | Jay | 55 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, 8.1 hours before the alert went out and 251 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
- 1385 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 871 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 7:10 PM CDT | Severe Thunderstorm Watch | SPC | Bureau, Cook, Ford, Fulton, Grundy, Hancock and 20 more | 5 hr |
| Aug 23, 11:07 PM CDT | Mesoscale Discussion | SPC | Bureau, Grundy, Henderson, Henry, Kankakee, Kendall and 11 more | 53 min |
| Aug 24, 11:12 AM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Christian, Clay, Clinton, Coles and 24 more | 93 min |
| Aug 24, 12:19 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Calhoun, Cass, Champaign, Christian, Clark and 37 more | 8 hr |
| Aug 24, 2:44 PM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clay, Clinton and 34 more | 91 min |
| Aug 24, 5:50 PM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clay, Clinton and 39 more | 85 min |
| Aug 23, 7:30 PM CDT | Mesoscale Discussion | SPC | DeKalb, Elkhart, Kosciusko, LaGrange, Marshall, Noble and 2 more | 90 min |
| Aug 23, 9:54 PM CDT | Mesoscale Discussion | SPC | Allen, DeKalb, Elkhart, Kosciusko, LaGrange, Marshall and 4 more | 66 min |
Nearby
Severe Thunderstorm Watches in Indiana, 2007Severe Thunderstorm Watches in Michigan, 2007Severe Thunderstorm Watches in Ohio, 2007Every severe thunderstorm watch in 2007
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.