Alert archive / Ohio / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 706
The Storm Prediction Center issued this severe thunderstorm watch at Aug 4, 2004, 11:55 AM EDT for 30 counties in Ohio; 14 counties in Pennsylvania; 20 counties in West Virginia. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 4, 2004, 11:55 AM EDT (15:55 UTC)
- Expired
- Aug 4, 2004, 5:00 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 64 counties
Adams County, OH, Athens County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Fairfield County, OH, Gallia County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Holmes County, OH, Jackson County, OH, Jefferson County, OH, Mahoning County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pike County, OH, Portage County, OH, Ross County, OH, Scioto County, OH, Stark County, OH, Trumbull County, OH, Tuscarawas County, OH, Vinton County, OH, Washington County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Fayette County, PA, Greene County, PA, Indiana County, PA, Jefferson County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Washington County, PA, Westmoreland County, PA, 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, Ritchie County, WV, Roane County, WV, Tyler County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV
The radar
The Pittsburgh radar (KPBZ), 137 km from the middle of the area, began a volume at 15:54 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
24 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 12:07 PM EDT | Severe Thunderstorm Warning | ILN | Fairfield | 53 min |
| Aug 4, 12:27 PM EDT | Severe Thunderstorm Warning | RLX | Perry | 33 min |
| Aug 4, 12:31 PM EDT | Severe Thunderstorm Warning | PBZ | Coshocton | 59 min |
| Aug 4, 12:46 PM EDT | Severe Thunderstorm Warning | PBZ | Guernsey, Muskingum, Tuscarawas | 59 min |
| Aug 4, 1:11 PM EDT | Severe Thunderstorm Warning | PBZ | Columbiana | 34 min |
| Aug 4, 1:14 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Lawrence | 61 min |
| Aug 4, 1:16 PM EDT | Severe Thunderstorm Warning | PBZ | Carroll, Harrison | 59 min |
| Aug 4, 1:27 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 63 min |
| Aug 4, 1:29 PM EDT | Severe Thunderstorm Warning | PBZ | Belmont, Monroe | 61 min |
| Aug 4, 1:36 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 54 min |
| Aug 4, 1:51 PM EDT | Severe Thunderstorm Warning | PBZ | Hancock | 24 min |
| Aug 4, 1:57 PM EDT | Severe Thunderstorm Warning | ILN | Adams, Brown | 63 min |
| Aug 4, 1:57 PM EDT | Severe Thunderstorm Warning | PBZ | Brooke | 33 min |
| Aug 4, 1:59 PM EDT | Severe Thunderstorm Warning | PBZ | Marshall, Ohio | 46 min |
| Aug 4, 2:00 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Washington | 60 min |
| Aug 4, 2:05 PM EDT | Severe Thunderstorm Warning | PBZ | Wetzel | 55 min |
| Aug 4, 2:11 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 49 min |
| Aug 4, 2:17 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 58 min |
| Aug 4, 2:19 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 56 min |
| Aug 4, 2:22 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana, Jefferson | 68 min |
| Aug 4, 2:38 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 67 min |
| Aug 4, 2:44 PM EDT | Severe Thunderstorm Warning | PBZ | Marion, Monongalia | 61 min |
| Aug 4, 2:53 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette | 67 min |
| Aug 4, 3:33 PM EDT | Tornado Warning | PBZ | Westmoreland | 27 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
Pittsburgh, PA (KPIT), launched 12:00Z, 3.9 hours before the alert went out and 138 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
- 35 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 869 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 54 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 |
|---|---|---|---|---|
| Aug 3, 11:35 PM EDT | Severe Thunderstorm Watch | SPC | Defiance, Fulton, Paulding, Williams | 5 hr |
| Aug 4, 2:15 AM EDT | Mesoscale Discussion | SPC | Defiance, Paulding, Williams | 90 min |
| Aug 4, 6:44 AM EDT | Mesoscale Discussion | SPC | Allen, Auglaize, Champaign, Clark, Crawford, Darke and 14 more | 2 hr |
| Aug 4, 10:39 AM EDT | Mesoscale Discussion | SPC | Adams, Ashland, Athens, Belmont, Brown, Carroll and 43 more | 2 hr |
| Aug 4, 2:01 PM EDT | Mesoscale Discussion | SPC | Adams, Gallia, Lawrence, Scioto | 89 min |
| Aug 4, 2:30 PM EDT | Severe Thunderstorm Watch | SPC | Lawrence | 6 hr |
| Aug 4, 2:31 PM EDT | Mesoscale Discussion | SPC | Adams, Gallia, Jackson, Lawrence, Meigs, Scioto | 119 min |
| Aug 4, 4:39 PM EDT | Mesoscale Discussion | SPC | Lawrence | 96 min |
| Aug 4, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Bedford, Blair, Cambria, Carbon, Centre and 20 more | 6 hr |
| Aug 4, 5:48 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Chester, Cumberland and 11 more | 117 min |
| Aug 4, 7:10 PM EDT | Severe Thunderstorm Watch | SPC | Chester, Delaware, Lancaster, Montgomery, Philadelphia | 4 hr |
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.