Alert archive / West Virginia / Mesoscale Discussions in 2004
Mesoscale Discussion 1881
The Storm Prediction Center issued this mesoscale discussion at Aug 4, 2004, 2:31 PM EDT for 6 states. It was in force for 119 min.
The area
The outline as issued.
The facts
- Issued
- Aug 4, 2004, 2:31 PM EDT (18:31 UTC)
- Expired
- Aug 4, 2004, 4:30 PM EDT
- In force
- 119 min
- Issued by
- the Storm Prediction Center
All 78 counties
Boyd County, KY, Fleming County, KY, Greenup County, KY, Lewis County, KY, Allegany County, MD, Garrett County, MD, Washington County, MD, Adams County, OH, Gallia County, OH, Jackson County, OH, Lawrence County, OH, Meigs County, OH, Scioto County, OH, Allegheny County, PA, Bedford County, PA, Blair County, PA, Cambria County, PA, Centre County, PA, Clearfield County, PA, Cumberland County, PA, Fayette County, PA, Franklin County, PA, Fulton County, PA, Greene County, PA, Huntingdon County, PA, Indiana County, PA, Juniata County, PA, Mifflin County, PA, Perry County, PA, Somerset County, PA, Washington County, PA, Westmoreland County, PA, City of Harrisonburg, VA, City of Winchester, VA, Clarke County, VA, Frederick County, VA, Greene County, VA, Highland County, VA, Madison County, VA, Page County, VA, Rappahannock County, VA, Rockingham County, VA, Shenandoah County, VA, Warren County, VA, Barbour County, WV, Berkeley County, WV, Braxton County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Gilmer County, WV, Grant County, WV, Hampshire County, WV, Hardy County, WV, Harrison County, WV, Jackson County, WV, Jefferson County, WV, Lewis County, WV, Marion County, WV, Mason County, WV, Mineral County, WV, Monongalia County, WV, Morgan County, WV, Pendleton County, WV, Pocahontas County, WV, Preston County, WV, Putnam County, WV, Randolph County, WV, Ritchie County, WV, Roane County, WV, Taylor County, WV, Tucker County, WV, Tyler County, WV, Upshur County, WV, Webster County, WV, Wetzel County, WV, Wirt County, WV
The radar
The Pittsburgh radar (KPBZ), 72 km from the middle of the area, began a volume at 18:34 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.
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 6.5 hours before the alert went out and 56 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
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 10:39 AM EDT | Mesoscale Discussion | SPC | Boone, Bracken, Campbell, Greenup, Kenton, Lewis and 2 more | 2 hr |
| Aug 4, 2:01 PM EDT | Mesoscale Discussion | SPC | Anderson, Bath, Bourbon, Boyd, Boyle, Bracken and 66 more | 89 min |
| Aug 4, 2:30 PM EDT | Severe Thunderstorm Watch | SPC | Adair, Anderson, Barren, Bath, Bourbon, Boyd and 69 more | 6 hr |
| Aug 4, 4:39 PM EDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Bath, Bell and 101 more | 96 min |
| Aug 4, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Carroll, Frederick, Garrett, Washington | 6 hr |
| Aug 4, 5:48 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Cecil, Frederick, Harford, Howard and 5 more | 117 min |
| Aug 4, 7:10 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Caroline, Cecil, Harford, Howard and 6 more | 4 hr |
| 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, 11:55 AM EDT | Severe Thunderstorm Watch | SPC | Adams, Athens, Belmont, Carroll, Columbiana, Coshocton and 24 more | 5 hr |
Nearby
Mesoscale Discussions in West Virginia, 2004Mesoscale Discussions in Pennsylvania, 2004Mesoscale Discussions in Virginia, 2004Every mesoscale discussion 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.