Alert archive / Indiana / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 783
The Storm Prediction Center issued this severe thunderstorm watch at Jul 21, 2003, 3:15 AM EST for 53 counties in Indiana. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 21, 2003, 3:15 AM EST (08:15 UTC)
- Expired
- Jul 21, 2003, 9:00 AM EST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 53 counties
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, Decatur County, IN, Delaware County, IN, Fayette County, IN, Fountain County, IN, Franklin 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, Lake County, IN, Madison County, IN, Marion County, IN, Marshall County, IN, Miami County, IN, Montgomery County, IN, Morgan County, IN, Newton County, IN, Owen County, IN, Parke County, IN, Pulaski County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Shelby County, IN, Starke County, IN, Tippecanoe County, IN, Tipton County, IN, Union County, IN, Vermillion County, IN, Vigo County, IN, Wabash County, IN, Warren County, IN, Wayne County, IN, Wells County, IN, White County, IN, Whitley County, IN
The radar
The Indianapolis radar (KIND), 97 km from the middle of the area, began a volume at 08:17 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.
Warnings issued inside it
21 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 3:24 AM EST | Severe Thunderstorm Warning | IWX | Miami | 36 min |
| Jul 21, 3:31 AM EST | Severe Thunderstorm Warning | IND | Fountain, Tippecanoe, Warren | 59 min |
| Jul 21, 3:39 AM EST | Severe Thunderstorm Warning | IWX | Wabash | 51 min |
| Jul 21, 3:53 AM EST | Severe Thunderstorm Warning | IND | Montgomery | 52 min |
| Jul 21, 3:59 AM EST | Severe Thunderstorm Warning | IND | Parke, Vermillion | 61 min |
| Jul 21, 4:17 AM EST | Severe Thunderstorm Warning | IND | Boone, Carroll, Clinton | 58 min |
| Jul 21, 4:25 AM EST | Severe Thunderstorm Warning | IND | Putnam | 65 min |
| Jul 21, 4:30 AM EST | Flash Flood Warning | IWX | Allen | 3 hr |
| Jul 21, 4:36 AM EST | Severe Thunderstorm Warning | IND | Clay, Vigo | 54 min |
| Jul 21, 4:38 AM EST | Severe Thunderstorm Warning | IND | Hendricks | 67 min |
| Jul 21, 4:44 AM EST | Severe Thunderstorm Warning | IND | Howard | 46 min |
| Jul 21, 4:50 AM EST | Severe Thunderstorm Warning | IND | Hamilton, Marion, Morgan | 55 min |
| Jul 21, 5:11 AM EST | Severe Thunderstorm Warning | IND | Hancock, Johnson, Madison | 64 min |
| Jul 21, 5:26 AM EST | Severe Thunderstorm Warning | IND | Bartholomew, Brown, Monroe, Shelby | 64 min |
| Jul 21, 5:30 AM EST | Severe Thunderstorm Warning | IND | Delaware, Henry, Rush | 60 min |
| Jul 21, 5:37 AM EST | Flash Flood Warning | LOT | Jasper, Lake, Newton, Porter | 113 min |
| Jul 21, 5:38 AM EST | Severe Thunderstorm Warning | IND | Decatur | 67 min |
| Jul 21, 5:42 AM EST | Severe Thunderstorm Warning | IWX | Blackford | 33 min |
| Jul 21, 5:46 AM EST | Severe Thunderstorm Warning | IND | Randolph | 59 min |
| Jul 21, 5:49 AM EST | Severe Thunderstorm Warning | ILN | Fayette, Franklin, Union, Wayne | 41 min |
| Jul 21, 5:54 AM EST | Severe Thunderstorm Warning | IWX | Jay | 36 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 00:00Z, 8.3 hours before the alert went out and 190 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
- 3794 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1094 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 10 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.8
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 9:39 PM EST | Mesoscale Discussion | SPC | Elkhart, Kosciusko, LaGrange, LaPorte, Marshall, Noble and 3 more | 66 min |
| Jul 20, 9:48 PM EST | Mesoscale Discussion | SPC | Lake, Newton | 117 min |
| Jul 20, 10:15 PM EST | Severe Thunderstorm Watch | SPC | Lake, Porter | 7 hr |
| Jul 20, 11:45 PM EST | Severe Thunderstorm Watch | SPC | Allen, DeKalb, Elkhart, Fulton, Huntington, Kosciusko and 11 more | 5 hr |
| Jul 21, 1:56 AM EST | Mesoscale Discussion | SPC | Bartholomew, Benton, Boone, Brown, Clay, Clinton and 20 more | 2 hr |
| Jul 21, 4:12 AM EST | Mesoscale Discussion | SPC | Gibson, Knox, Posey, Sullivan, Vanderburgh | 2 hr |
| Jul 21, 5:03 AM EST | Mesoscale Discussion | SPC | Bartholomew, Brown, Clark, Crawford, Daviess, Dearborn and 17 more | 117 min |
| Jul 21, 5:10 AM EST | Severe Thunderstorm Watch | SPC | Dearborn, Decatur, Fayette, Franklin, Jay, Jefferson and 9 more | 6 hr |
| Jul 21, 10:27 AM EST | Mesoscale Discussion | SPC | Bartholomew, Brown, Clark, Crawford, Daviess, Dearborn and 29 more | 2 hr |
| Jul 21, 3:26 PM EST | Mesoscale Discussion | SPC | Allen, DeKalb, Elkhart, Fulton, Jasper, Kosciusko and 12 more | 94 min |
Nearby
Severe Thunderstorm Watches in Indiana, 2003Every severe thunderstorm watch in 2003
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.