Alert archive / Ohio / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 141
The Storm Prediction Center issued this severe thunderstorm watch at Apr 20, 2003, 4:15 PM EDT for 8 counties in Indiana; 14 counties in Kentucky; 62 counties in Ohio. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 20, 2003, 4:15 PM EDT (20:15 UTC)
- Expired
- Apr 20, 2003, 10:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 84 counties
Dearborn County, IN, Franklin County, IN, Jefferson County, IN, Ohio County, IN, Ripley County, IN, Switzerland County, IN, Union County, IN, Wayne County, IN, Boone County, KY, Bracken County, KY, Campbell County, KY, Carroll County, KY, Gallatin County, KY, Grant County, KY, Greenup County, KY, Kenton County, KY, Lewis County, KY, Mason County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY, Trimble County, KY, Adams County, OH, Allen County, OH, Ashland County, OH, Auglaize County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Coshocton County, OH, Crawford County, OH, Cuyahoga County, OH, Darke County, OH, Delaware County, OH, Erie County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Fulton County, OH, Greene County, OH, Hamilton County, OH, Hancock County, OH, Hardin County, OH, Henry County, OH, Highland County, OH, Hocking County, OH, Holmes County, OH, Huron County, OH, Jackson County, OH, Knox County, OH, Licking County, OH, Logan County, OH, Lorain County, OH, Lucas County, OH, Madison County, OH, Marion County, OH, Medina County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Morrow County, OH, Ottawa County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Preble County, OH, Putnam County, OH, Richland County, OH, Ross County, OH, Sandusky County, OH, Scioto County, OH, Seneca County, OH, Shelby County, OH, Summit County, OH, Union County, OH, Van Wert County, OH, Vinton County, OH, Warren County, OH, Wayne County, OH, Wood County, OH, Wyandot County, OH
The radar
The Cincinnati radar (KILN), 39 km from the middle of the area, began a volume at 20:17 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
22 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 5:27 PM EDT | Severe Thunderstorm Warning | CLE | Hancock, Wyandot | 63 min |
| Apr 20, 5:27 PM EDT | Severe Thunderstorm Warning | ILN | Hardin | 48 min |
| Apr 20, 5:39 PM EDT | Severe Thunderstorm Warning | ILN | Franklin | 51 min |
| Apr 20, 5:47 PM EDT | Severe Thunderstorm Warning | ILN | Union | 43 min |
| Apr 20, 5:52 PM EDT | Severe Thunderstorm Warning | CLE | Seneca | 53 min |
| Apr 20, 5:56 PM EDT | Severe Thunderstorm Warning | CLE | Huron, Sandusky | 64 min |
| Apr 20, 6:15 PM EDT | Tornado Warning | CLE | Seneca | 30 min |
| Apr 20, 6:18 PM EDT | Severe Thunderstorm Warning | CLE | Ottawa | 42 min |
| Apr 20, 6:21 PM EDT | Severe Thunderstorm Warning | CLE | Erie | 54 min |
| Apr 20, 6:27 PM EDT | Severe Thunderstorm Warning | ILN | Montgomery, Preble | 48 min |
| Apr 20, 6:55 PM EDT | Severe Thunderstorm Warning | ILN | Clark, Greene, Miami | 50 min |
| Apr 20, 7:02 PM EDT | Severe Thunderstorm Warning | CLE | Lorain | 43 min |
| Apr 20, 7:12 PM EDT | Severe Thunderstorm Warning | CLE | Ashland, Richland | 48 min |
| Apr 20, 7:17 PM EDT | Severe Thunderstorm Warning | ILN | Champaign, Madison | 43 min |
| Apr 20, 7:44 PM EDT | Severe Thunderstorm Warning | ILN | Franklin, Union | 46 min |
| Apr 20, 7:54 PM EDT | Severe Thunderstorm Warning | ILN | Delaware | 51 min |
| Apr 20, 8:13 PM EDT | Severe Thunderstorm Warning | ILN | Licking | 47 min |
| Apr 20, 8:17 PM EDT | Severe Thunderstorm Warning | CLE | Knox, Morrow | 43 min |
| Apr 20, 8:59 PM EDT | Severe Thunderstorm Warning | CLE | Knox | 46 min |
| Apr 20, 9:11 PM EDT | Severe Thunderstorm Warning | PBZ | Coshocton | 49 min |
| Apr 20, 9:24 PM EDT | Severe Thunderstorm Warning | CLE | Holmes | 51 min |
| Apr 20, 9:57 PM EDT | Severe Thunderstorm Warning | PBZ | Coshocton | 48 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
Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.3 hours before the alert went out and 39 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
- 54 J/kg
- Mixed-layer CIN
- -227 J/kg
- Mixed-layer LCL
- 1119 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -56 m²/s²
- 0-3 km storm-relative helicity
- -84 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, 12:52 PM EDT | Mesoscale Discussion | SPC | Benton, Boone, Brown, Carroll, Cass, Clay and 60 more | 2 hr |
| Apr 20, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allen, Bartholomew, Benton, Blackford, Boone and 75 more | 6 hr |
| Apr 20, 5:35 PM EDT | Tornado Watch | SPC | Clark, Crawford, Floyd, Harrison, Perry | 5 hr |
| Apr 20, 6:31 PM EDT | Mesoscale Discussion | SPC | Ohio, Switzerland | 89 min |
| Apr 20, 7:04 PM EDT | Mesoscale Discussion | SPC | Clark, Crawford, Floyd, Harrison | 116 min |
| Apr 20, 2:00 PM EDT | Mesoscale Discussion | SPC | Ballard, Breckinridge, Butler, Caldwell, Calloway, Carlisle and 24 more | 3 hr |
| Apr 20, 2:45 PM EDT | Severe Thunderstorm Watch | SPC | Ballard, Breckinridge, Butler, Caldwell, Calloway, Carlisle and 22 more | 5 hr |
| Apr 20, 4:29 PM EDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Bath, Bourbon and 43 more | 2 hr |
| Apr 20, 7:25 PM EDT | Severe Thunderstorm Watch | SPC | Allen, Barren, Calloway, Christian, Graves, Logan and 5 more | 6 hr |
| Apr 20, 7:53 PM EDT | Mesoscale Discussion | SPC | Ashland, Coshocton, Delaware, Holmes, Knox, Licking and 4 more | 67 min |
Nearby
Severe Thunderstorm Watches in Ohio, 2003Severe Thunderstorm Watches in Kentucky, 2003Severe 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.