Alert archive / Ohio / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 216
The Storm Prediction Center issued this severe thunderstorm watch at May 18, 2004, 12:45 PM EST for 4 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 18, 2004, 12:45 PM EST (17:45 UTC)
- Expired
- May 18, 2004, 7:00 PM EST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 153 counties
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, Dearborn County, IN, Decatur County, IN, Delaware County, IN, Fayette County, IN, Fountain County, IN, Franklin County, IN, Fulton County, IN, Grant County, IN, Greene 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, Jennings County, IN, Johnson County, IN, Kosciusko County, IN, Madison County, IN, Marion County, IN, Miami County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Pulaski County, IN, Putnam County, IN, Randolph County, IN, Ripley County, IN, Rush County, IN, Shelby County, IN, Tippecanoe County, IN, Tipton County, IN, Union County, IN, Vigo County, IN, Wabash County, IN, Warren County, IN, Wayne County, IN, Wells County, IN, White County, IN, Whitley County, IN, Allen County, OH, Ashland County, OH, Athens County, OH, Auglaize County, OH, Belmont County, OH, Butler County, OH, Carroll County, OH, Champaign County, OH, Clark County, OH, Clinton County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Darke County, OH, Defiance County, OH, Delaware County, OH, Erie County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Geauga County, OH, Greene County, OH, Guernsey County, OH, Hamilton County, OH, Hancock County, OH, Hardin County, OH, Harrison County, OH, Henry County, OH, Highland County, OH, Hocking County, OH, Holmes County, OH, Huron County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Logan County, OH, Lorain County, OH, Madison County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Mercer County, OH, Miami County, OH, Monroe County, OH, Montgomery County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Paulding County, OH, Perry County, OH, Pickaway County, OH, Portage County, OH, Preble County, OH, Putnam County, OH, Richland County, OH, Ross County, OH, Sandusky County, OH, Seneca County, OH, Shelby County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Van Wert County, OH, Vinton County, OH, Warren County, OH, Washington County, OH, Wayne County, OH, Wood County, OH, Wyandot County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Fayette County, PA, Greene County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Doddridge County, WV, Hancock County, WV, Harrison County, WV, Marion County, WV, Marshall County, WV, Monongalia County, WV, Ohio County, WV, Pleasants County, WV, Preston County, WV, Taylor County, WV, Tyler County, WV, Wetzel County, WV, Wood County, WV
The radar
The Cincinnati radar (KILN), 119 km from the middle of the area, began a volume at 17:47 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
47 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 1:07 PM EST | Severe Thunderstorm Warning | LOT | Benton | 38 min |
| May 18, 1:15 PM EST | Flash Flood Warning | PBZ | Guernsey | 3 hr |
| May 18, 1:44 PM EST | Severe Thunderstorm Warning | LOT | Benton | 46 min |
| May 18, 1:45 PM EST | Flash Flood Warning | PBZ | Allegheny | 3 hr |
| May 18, 1:51 PM EST | Flash Flood Warning | PBZ | Westmoreland | 3 hr |
| May 18, 1:59 PM EST | Severe Thunderstorm Warning | IND | Parke, Vermillion | 61 min |
| May 18, 1:59 PM EST | Severe Thunderstorm Warning | PBZ | Allegheny | 61 min |
| May 18, 2:03 PM EST | Flash Flood Warning | PBZ | Belmont | 3 hr |
| May 18, 2:06 PM EST | Severe Thunderstorm Warning | PBZ | Washington | 39 min |
| May 18, 2:08 PM EST | Severe Thunderstorm Warning | IWX | White | 82 min |
| May 18, 2:09 PM EST | Severe Thunderstorm Warning | LOT | Jasper, Newton | 51 min |
| May 18, 2:15 PM EST | Severe Thunderstorm Warning | CLE | Morrow | 60 min |
| May 18, 2:16 PM EST | Severe Thunderstorm Warning | IWX | Defiance, Paulding | 29 min |
| May 18, 2:16 PM EST | Flash Flood Warning | PBZ | Muskingum | 3 hr |
| May 18, 2:20 PM EST | Severe Thunderstorm Warning | CLE | Erie | 55 min |
| May 18, 2:21 PM EST | Severe Thunderstorm Warning | IWX | Henry, Putnam | 54 min |
| May 18, 2:25 PM EST | Severe Thunderstorm Warning | CLE | Crawford, Wyandot | 65 min |
| May 18, 2:49 PM EST | Severe Thunderstorm Warning | CLE | Cuyahoga, Lorain, Medina | 56 min |
| May 18, 2:52 PM EST | Flash Flood Warning | PBZ | Tuscarawas | 3 hr |
| May 18, 2:53 PM EST | Severe Thunderstorm Warning | CLE | Knox | 52 min |
| May 18, 2:53 PM EST | Severe Thunderstorm Warning | ILN | Hardin | 52 min |
| May 18, 3:13 PM EST | Severe Thunderstorm Warning | CLE | Huron | 47 min |
| May 18, 3:18 PM EST | Flash Flood Warning | PBZ | Fayette | 3 hr |
| May 18, 3:21 PM EST | Severe Thunderstorm Warning | PBZ | Greene | 54 min |
| May 18, 3:25 PM EST | Flash Flood Warning | PBZ | Carroll | 3 hr |
| May 18, 3:40 PM EST | Severe Thunderstorm Warning | CLE | Lorain | 50 min |
| May 18, 3:45 PM EST | Flash Flood Warning | PBZ | Greene | 3 hr |
| May 18, 3:46 PM EST | Severe Thunderstorm Warning | PBZ | Fayette | 59 min |
| May 18, 3:47 PM EST | Severe Thunderstorm Warning | CLE | Portage, Summit | 43 min |
| May 18, 3:48 PM EST | Severe Thunderstorm Warning | CLE | Medina | 57 min |
| May 18, 3:52 PM EST | Severe Thunderstorm Warning | CLE | Crawford | 38 min |
| May 18, 4:00 PM EST | Tornado Warning | CLE | Marion | 60 min |
| May 18, 4:04 PM EST | Flash Flood Warning | PBZ | Coshocton | 3 hr |
| May 18, 4:08 PM EST | Severe Thunderstorm Warning | PBZ | Columbiana | 67 min |
| May 18, 4:15 PM EST | Flash Flood Warning | PBZ | Guernsey | 3 hr |
| May 18, 4:30 PM EST | Severe Thunderstorm Warning | IND | Montgomery, Parke | 45 min |
| May 18, 4:49 PM EST | Severe Thunderstorm Warning | PBZ | Coshocton, Muskingum | 56 min |
| May 18, 5:04 PM EST | Flash Flood Warning | IND | Fountain, Parke, Vermillion | 116 min |
| May 18, 5:11 PM EST | Severe Thunderstorm Warning | IND | Morgan | 34 min |
| May 18, 5:11 PM EST | Severe Thunderstorm Warning | ILN | Champaign | 49 min |
| May 18, 5:17 PM EST | Severe Thunderstorm Warning | ILN | Franklin, Madison | 43 min |
| May 18, 5:18 PM EST | Severe Thunderstorm Warning | PBZ | Butler | 57 min |
| May 18, 5:20 PM EST | Severe Thunderstorm Warning | ILN | Union | 55 min |
| May 18, 5:24 PM EST | Severe Thunderstorm Warning | PBZ | Armstrong | 66 min |
| May 18, 5:33 PM EST | Flash Flood Warning | PBZ | Butler | 3 hr |
| May 18, 5:34 PM EST | Severe Thunderstorm Warning | PBZ | Clarion | 56 min |
| May 18, 6:16 PM EST | Severe Thunderstorm Warning | ILN | Fayette, Union | 44 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, 5.8 hours before the alert went out and 118 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
- 1159 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 658 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 117 m²/s²
- 0-3 km storm-relative helicity
- 110 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.3
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 12:41 AM EST | Mesoscale Discussion | SPC | Elkhart, LaGrange, Lake, LaPorte, Porter, Saint Joseph | 2 hr |
| May 18, 11:55 AM EST | Mesoscale Discussion | SPC | Adams, Allen, Benton, Blackford, Boone, Carroll and 34 more | 2 hr |
| May 18, 12:00 PM EST | Severe Thunderstorm Watch | SPC | Vermillion | 7 hr |
| May 18, 3:02 PM EST | Mesoscale Discussion | SPC | Adams, Blackford, Boone, Carroll, Cass, Clinton and 15 more | 118 min |
| May 18, 6:09 PM EST | Mesoscale Discussion | SPC | Adams, Bartholomew, Boone, Brown, Clay, Daviess and 38 more | 96 min |
| May 18, 11:54 AM EST | Mesoscale Discussion | SPC | Belmont, Carroll, Columbiana, Coshocton, Guernsey, Harrison and 13 more | 66 min |
| May 18, 12:04 PM EST | Mesoscale Discussion | SPC | Bradford, Lackawanna, Luzerne, Sullivan, Susquehanna, Wayne and 1 more | 56 min |
| May 18, 12:50 PM EST | Severe Thunderstorm Watch | SPC | Bradford, Cameron, Elk, Jefferson, McKean, Potter and 2 more | 8 hr |
| May 18, 1:54 PM EST | Mesoscale Discussion | SPC | Adams, Bedford, Berks, Blair, Bucks, Cambria and 33 more | 96 min |
| May 18, 5:24 PM EST | Mesoscale Discussion | SPC | Bradford, Cameron, Elk, Jefferson, McKean, Potter and 2 more | 2 hr |
| May 18, 6:49 PM EST | Mesoscale Discussion | SPC | Chester, Delaware, Lancaster, Montgomery, Philadelphia, York | 2 hr |
| May 18, 12:14 PM EST | Mesoscale Discussion | SPC | Berkeley, Hampshire, Hardy, Jefferson, Pendleton | 2 hr |
Nearby
Severe Thunderstorm Watches in Ohio, 2004Severe Thunderstorm Watches in Indiana, 2004Severe Thunderstorm Watches in West Virginia, 2004Every severe thunderstorm watch in 2004
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.