Alert archive / Ohio / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 549
The Storm Prediction Center issued this severe thunderstorm watch at Jul 4, 2004, 12:50 PM EDT for 29 counties in Ohio; 16 counties in Pennsylvania; 25 counties in West Virginia. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 4, 2004, 12:50 PM EDT (16:50 UTC)
- Expired
- Jul 4, 2004, 6:00 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 70 counties
Ashtabula County, OH, Athens County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Cuyahoga County, OH, Gallia County, OH, Geauga County, OH, Guernsey County, OH, Harrison County, OH, Holmes County, OH, Jefferson County, OH, Lake County, OH, Mahoning County, OH, Medina County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Portage County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Washington County, OH, Wayne 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, Jefferson County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Warren County, PA, Washington County, PA, Westmoreland County, PA, Barbour County, WV, Brooke County, WV, Calhoun County, WV, Doddridge County, WV, Gilmer County, WV, Hancock County, WV, Harrison County, WV, Jackson County, WV, Lewis County, WV, Marion County, WV, Marshall County, WV, Mason County, WV, Monongalia County, WV, Ohio County, WV, Pleasants County, WV, Preston County, WV, Randolph County, WV, Ritchie County, WV, Taylor County, WV, Tucker County, WV, Tyler County, WV, Upshur County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV
The radar
The Pittsburgh radar (KPBZ), 88 km from the middle of the area, began a volume at 16:53 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
6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 4:24 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 66 min |
| Jul 4, 4:38 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 67 min |
| Jul 4, 4:57 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene | 63 min |
| Jul 4, 5:16 PM EDT | Severe Thunderstorm Warning | PBZ | Tucker | 59 min |
| Jul 4, 5:17 PM EDT | Flash Flood Warning | PBZ | Tucker | 3 hr |
| Jul 4, 5:34 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 56 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, 4.8 hours before the alert went out and 244 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
- 503 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 594 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 11:08 AM EDT | Mesoscale Discussion | SPC | Ashtabula, Belmont, Carroll, Columbiana, Guernsey, Harrison and 7 more | 3 hr |
| Jul 4, 3:00 PM EDT | Mesoscale Discussion | SPC | Ashtabula, Columbiana, Jefferson, Mahoning, Trumbull | 2 hr |
| Jul 4, 4:55 PM EDT | Mesoscale Discussion | SPC | Bedford, Blair, Cambria, Cameron, Clearfield, Elk and 9 more | 65 min |
| Jul 4, 7:29 PM EDT | Mesoscale Discussion | SPC | Cameron, Centre, Clinton, Potter, Tioga | 61 min |
Nearby
Severe Thunderstorm Watches in Ohio, 2004Severe Thunderstorm Watches in West Virginia, 2004Severe Thunderstorm Watches in Pennsylvania, 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.