Alert archive / West Virginia / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 785
The Storm Prediction Center issued this severe thunderstorm watch at Jul 21, 2003, 8:40 AM EDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 21, 2003, 8:40 AM EDT (12:40 UTC)
- Expired
- Jul 21, 2003, 2:00 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 66 counties
Bath County, KY, Boyd County, KY, Carter County, KY, Elliott County, KY, Greenup County, KY, Lawrence County, KY, Lewis County, KY, Montgomery County, KY, Rowan County, KY, Athens County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Gallia County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Jackson County, OH, Jefferson County, OH, Lawrence County, OH, Mahoning County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Scioto County, OH, Stark 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, Greene County, PA, Jefferson County, PA, Lawrence County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Cabell County, WV, Calhoun County, WV, Doddridge County, WV, Gilmer County, WV, Hancock County, WV, Harrison County, WV, Jackson County, WV, Kanawha County, WV, Lincoln County, WV, Marion County, WV, Marshall County, WV, Mason County, WV, Monongalia County, WV, Ohio County, WV, Pleasants County, WV, Putnam County, WV, Ritchie County, WV, Roane County, WV, Tyler County, WV, Wayne County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV
The radar
The Charleston,WV radar (KRLX), 112 km from the middle of the area, began a volume at 12:44 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
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 1:44 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 61 min |
| Jul 21, 1:59 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 76 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, 0.7 hours before the alert went out and 172 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
- 1318 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 839 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 181 m²/s²
- 0-3 km storm-relative helicity
- 214 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 5.9
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 6:03 AM EDT | Mesoscale Discussion | SPC | Boone, Campbell, Carroll, Gallatin, Grant, Henry and 5 more | 117 min |
| Jul 21, 6:10 AM EDT | Severe Thunderstorm Watch | SPC | Boone, Bracken, Campbell, Carroll, Gallatin, Grant and 2 more | 6 hr |
| Jul 21, 7:39 AM EDT | Mesoscale Discussion | SPC | Boyd, Bracken, Carter, Fleming, Greenup, Harrison and 5 more | 96 min |
| Jul 21, 8:03 AM EDT | Mesoscale Discussion | SPC | Allen, Anderson, Barren, Breckinridge, Bullitt, Butler and 31 more | 117 min |
| Jul 21, 11:27 AM EDT | Mesoscale Discussion | SPC | Boone, Breckinridge, Bullitt, Butler, Caldwell, Carroll and 33 more | 2 hr |
| Jul 21, 12:55 PM EDT | Severe Thunderstorm Watch | SPC | Adair, Allen, Barren, Boyle, Butler, Caldwell and 34 more | 6 hr |
| Jul 21, 2:41 PM EDT | Mesoscale Discussion | SPC | Bell, Floyd, Harlan, Knott, Leslie, Letcher and 3 more | 64 min |
| Jul 21, 4:14 PM EDT | Mesoscale Discussion | SPC | Allen, Christian, Cumberland, Logan, Monroe, Muhlenberg and 3 more | 2 hr |
| Jul 21, 12:45 AM EDT | Severe Thunderstorm Watch | SPC | Defiance, Paulding, Van Wert, Williams | 5 hr |
| Jul 21, 2:11 AM EDT | Mesoscale Discussion | SPC | Allen, Ashland, Crawford, Cuyahoga, Erie, Geauga and 24 more | 2 hr |
| Jul 21, 4:26 PM EDT | Mesoscale Discussion | SPC | Defiance, Fulton, Williams | 94 min |
| Jul 21, 1:15 PM EDT | Mesoscale Discussion | SPC | Allegheny, Armstrong, Blair, Bradford, Butler, Cambria and 36 more | 2 hr |
| Jul 21, 1:40 PM EDT | Severe Thunderstorm Watch | SPC | Allegheny, Armstrong, Beaver, Blair, Bradford, Butler and 38 more | 6 hr |
| Jul 21, 3:35 PM EDT | Severe Thunderstorm Watch | SPC | Lackawanna, Wayne | 6 hr |
| Jul 21, 3:51 PM EDT | Mesoscale Discussion | SPC | Blair, Bradford, Cambria, Cameron, Centre, Clearfield and 25 more | 114 min |
| Jul 21, 6:30 PM EDT | Severe Thunderstorm Watch | SPC | Bucks, Lehigh, Monroe, Northampton, Pike | 5 hr |
| Jul 21, 7:51 PM EDT | Mesoscale Discussion | SPC | Bucks, Northampton | 84 min |
Nearby
Severe Thunderstorm Watches in West Virginia, 2003Severe Thunderstorm Watches in Ohio, 2003Severe Thunderstorm Watches in Pennsylvania, 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.