Alert archive / Indiana / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 138
The Storm Prediction Center issued this severe thunderstorm watch at Apr 20, 2003, 12:20 PM CDT for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 20, 2003, 12:20 PM CDT (17:20 UTC)
- Expired
- Apr 20, 2003, 6:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 98 counties
Clark County, IL, Crawford County, IL, Edgar County, IL, Edwards County, IL, Hamilton County, IL, Jasper County, IL, Lawrence County, IL, Richland County, IL, Vermilion County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Adams County, IN, Allen County, IN, Bartholomew County, IN, Benton County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Cass County, IN, Clay County, IN, Clinton County, IN, Crawford County, IN, Daviess County, IN, Decatur County, IN, DeKalb County, IN, Delaware County, IN, Dubois County, IN, Elkhart County, IN, Fayette County, IN, Floyd County, IN, Fountain County, IN, Fulton County, IN, Gibson County, IN, Grant County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Harrison County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jackson County, IN, Jasper County, IN, Jay County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Kosciusko County, IN, LaGrange County, IN, LaPorte County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Marshall County, IN, Martin County, IN, Miami County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Noble County, IN, Orange County, IN, Owen County, IN, Parke County, IN, Perry County, IN, Pike County, IN, Porter County, IN, Posey County, IN, Pulaski County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Saint Joseph County, IN, Scott County, IN, Shelby County, IN, Spencer County, IN, Starke County, IN, Steuben County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Vanderburgh County, IN, Vermillion County, IN, Vigo County, IN, Wabash County, IN, Warren County, IN, Warrick County, IN, Washington County, IN, Wells County, IN, White County, IN, Whitley County, IN, Meade County, KY, Defiance County, OH, Paulding County, OH, Van Wert County, OH, Williams County, OH
The radar
The Indianapolis radar (KIND), 64 km from the middle of the area, began a volume at 17:19 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.
Warnings issued inside it
25 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 1:03 PM CDT | Severe Thunderstorm Warning | ILX | Lawrence | 42 min |
| Apr 20, 1:04 PM CDT | Severe Thunderstorm Warning | IWX | Marshall, Pulaski, Starke | 56 min |
| Apr 20, 1:14 PM CDT | Severe Thunderstorm Warning | PAH | Edwards, Wabash | 31 min |
| Apr 20, 1:22 PM CDT | Severe Thunderstorm Warning | IND | Greene | 38 min |
| Apr 20, 1:36 PM CDT | Severe Thunderstorm Warning | IND | Johnson, Morgan | 39 min |
| Apr 20, 1:43 PM CDT | Severe Thunderstorm Warning | IWX | Elkhart, Kosciusko | 62 min |
| Apr 20, 2:07 PM CDT | Severe Thunderstorm Warning | IND | Hancock, Shelby | 38 min |
| Apr 20, 2:18 PM CDT | Severe Thunderstorm Warning | IND | Daviess, Greene, Knox | 42 min |
| Apr 20, 2:19 PM CDT | Severe Thunderstorm Warning | IWX | LaGrange | 56 min |
| Apr 20, 2:53 PM CDT | Severe Thunderstorm Warning | IND | Henry, Randolph | 37 min |
| Apr 20, 3:54 PM CDT | Severe Thunderstorm Warning | PAH | Gibson, Pike | 51 min |
| Apr 20, 4:11 PM CDT | Severe Thunderstorm Warning | LMK | Dubois | 49 min |
| Apr 20, 4:11 PM CDT | Severe Thunderstorm Warning | PAH | Spencer, Warrick | 34 min |
| Apr 20, 4:27 PM CDT | Severe Thunderstorm Warning | ILN | Fayette | 48 min |
| Apr 20, 4:30 PM CDT | Tornado Warning | LMK | Dubois | 30 min |
| Apr 20, 4:31 PM CDT | Tornado Warning | LMK | Dubois | 29 min |
| Apr 20, 4:48 PM CDT | Severe Thunderstorm Warning | PAH | Spencer, Warrick | 42 min |
| Apr 20, 4:56 PM CDT | Severe Thunderstorm Warning | LMK | Crawford, Orange | 49 min |
| Apr 20, 5:21 PM CDT | Severe Thunderstorm Warning | LMK | Dubois | 24 min |
| Apr 20, 5:27 PM CDT | Tornado Warning | PAH | Spencer | 33 min |
| Apr 20, 5:36 PM CDT | Severe Thunderstorm Warning | IND | Daviess | 39 min |
| Apr 20, 5:40 PM CDT | Severe Thunderstorm Warning | LMK | Crawford, Perry | 40 min |
| Apr 20, 5:50 PM CDT | Severe Thunderstorm Warning | LMK | Washington | 25 min |
| Apr 20, 5:59 PM CDT | Severe Thunderstorm Warning | LMK | Perry | 46 min |
| Apr 20, 6:00 PM CDT | Severe Thunderstorm Warning | LMK | Perry | 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, 5.3 hours before the alert went out and 162 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1205 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 1:25 AM CDT | Mesoscale Discussion | SPC | Clinton, Jackson, Monroe, Perry, Randolph, Saint Clair and 1 more | 2 hr |
| Apr 20, 1:50 AM CDT | Severe Thunderstorm Watch | SPC | Jackson, Monroe, Perry, Randolph, Washington | 5 hr |
| Apr 20, 4:00 AM CDT | Mesoscale Discussion | SPC | Jackson, Monroe, Perry, Randolph, Washington | 2 hr |
| Apr 20, 11:52 AM CDT | Mesoscale Discussion | SPC | Alexander, Clark, Clay, Coles, Crawford, Cumberland and 23 more | 2 hr |
| Apr 20, 1:00 PM CDT | Mesoscale Discussion | SPC | Gallatin, Hardin, Johnson, Massac, Pope, Pulaski and 1 more | 3 hr |
| Apr 20, 1:45 PM CDT | Severe Thunderstorm Watch | SPC | Gallatin, Hardin, Johnson, Massac, Pope, Saline | 5 hr |
| Apr 20, 3:15 PM CDT | Severe Thunderstorm Watch | SPC | Dearborn, Franklin, Jefferson, Ohio, Ripley, Switzerland and 2 more | 6 hr |
| Apr 20, 4:35 PM CDT | Tornado Watch | SPC | Clark, Crawford, Floyd, Harrison, Perry | 5 hr |
| Apr 20, 5:31 PM CDT | Mesoscale Discussion | SPC | Ohio, Switzerland | 89 min |
| Apr 20, 6:04 PM CDT | Mesoscale Discussion | SPC | Clark, Crawford, Floyd, Harrison | 116 min |
| Apr 20, 3:29 PM CDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Bath, Bourbon and 43 more | 2 hr |
| Apr 20, 6:25 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Barren, Calloway, Christian, Graves, Logan and 5 more | 6 hr |
| Apr 20, 6:53 PM CDT | Mesoscale Discussion | SPC | Ashland, Coshocton, Delaware, Holmes, Knox, Licking and 4 more | 67 min |
Nearby
Severe Thunderstorm Watches in Indiana, 2003Severe Thunderstorm Watches in Illinois, 2003Severe Thunderstorm Watches in Ohio, 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.