Alert archive / Ohio / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 270
The Storm Prediction Center issued this severe thunderstorm watch at May 24, 2004, 12:30 AM EDT for 53 counties in Ohio; 16 counties in Pennsylvania; 4 counties in West Virginia. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 24, 2004, 12:30 AM EDT (04:30 UTC)
- Expired
- May 24, 2004, 6:00 AM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 73 counties
Ashland County, OH, Belmont County, OH, Carroll County, OH, Champaign County, OH, Clark County, OH, Clinton County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Cuyahoga 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, Hancock County, OH, Hardin County, OH, Harrison 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, Monroe County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Ottawa County, OH, Perry County, OH, Pickaway County, OH, Portage County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union 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, Crawford County, PA, Fayette County, PA, Forest County, PA, Greene County, PA, Indiana County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Warren County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV, Marshall County, WV, Ohio County, WV
The radar
The Cleveland radar (KCLE), 72 km from the middle of the area, began a volume at 04:34 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
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 1:10 AM EDT | Severe Thunderstorm Warning | ILN | Champaign, Clark, Greene | 35 min |
| May 24, 1:42 AM EDT | Severe Thunderstorm Warning | ILN | Madison, Union | 33 min |
| May 24, 3:47 AM EDT | Severe Thunderstorm Warning | PBZ | Columbiana | 58 min |
| May 24, 4:02 AM EDT | Severe Thunderstorm Warning | CLE | Summit | 28 min |
| May 24, 4:20 AM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 55 min |
| May 24, 4:23 AM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 52 min |
| May 24, 5:05 AM EDT | Flash Flood Warning | CTP | Warren | 4 hr |
| May 24, 5:26 AM EDT | Flash Flood Warning | PBZ | Venango | 3 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 4.5 hours before the alert went out and 170 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
- 1100 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 1452 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 288 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 |
|---|---|---|---|---|
| May 23, 9:40 PM EDT | Mesoscale Discussion | SPC | Defiance, Fulton, Henry, Lucas, Ottawa, Paulding and 2 more | 65 min |
| May 23, 10:50 PM EDT | Severe Thunderstorm Watch | SPC | Allen, Auglaize, Butler, Darke, Defiance, Fulton and 10 more | 6 hr |
| May 24, 12:26 AM EDT | Mesoscale Discussion | SPC | Allen, Auglaize, Butler, Darke, Defiance, Fulton and 11 more | 64 min |
| May 24, 2:09 AM EDT | Mesoscale Discussion | SPC | Allen, Auglaize, Belmont, Butler, Carroll, Clinton and 37 more | 2 hr |
| May 24, 4:55 AM EDT | Mesoscale Discussion | SPC | Trumbull | 95 min |
| May 24, 10:03 AM EDT | Mesoscale Discussion | SPC | Bedford, Berks, Blair, Bradford, Bucks, Carbon and 31 more | 117 min |
| May 24, 11:00 AM EDT | Severe Thunderstorm Watch | SPC | Carbon, Columbia, Lackawanna, Lehigh, Luzerne, Monroe and 5 more | 5 hr |
| May 24, 12:24 PM EDT | Mesoscale Discussion | SPC | Blair, Bradford, Cambria, Cameron, Centre, Clearfield and 12 more | 2 hr |
| May 24, 12:40 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Blair, Bradford, Butler and 23 more | 4 hr |
| May 24, 3:00 PM EDT | Mesoscale Discussion | SPC | Berks, Bucks, Carbon, Columbia, Lackawanna, Lehigh and 11 more | 90 min |
| May 24, 4:55 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Berks, Bradford, Bucks, Carbon, Chester and 28 more | 4 hr |
| May 24, 5:43 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bradford, Bucks, Carbon, Chester and 27 more | 47 min |
| May 24, 7:25 PM EDT | Mesoscale Discussion | SPC | Berks, Bradford, Bucks, Carbon, Chester, Columbia and 24 more | 95 min |
Nearby
Severe Thunderstorm Watches in Ohio, 2004Severe Thunderstorm Watches in Pennsylvania, 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.