Alert archive / Pennsylvania / Mesoscale Discussions in 2014
Mesoscale Discussion 1073
The Storm Prediction Center issued this mesoscale discussion at Jun 18, 2014, 9:06 PM EDT for 6 states. It was in force for 54 min.
The area
The outline as issued.
The facts
- Issued
- Jun 18, 2014, 9:06 PM EDT (01:06 UTC)
- Expired
- Jun 18, 2014, 10:00 PM EDT
- In force
- 54 min
- Issued by
- the Storm Prediction Center
All 121 counties
Boyd County, KY, Carter County, KY, Greenup County, KY, Lewis County, KY, Mason County, KY, Allegany County, MD, Garrett County, MD, Washington County, MD, Adams County, OH, Athens County, OH, Belmont County, OH, Brown County, OH, Carroll County, OH, Clermont County, OH, Clinton County, OH, Columbiana County, OH, Coshocton County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Gallia County, OH, Guernsey County, OH, Harrison County, OH, Highland County, OH, Hocking County, OH, Jackson County, OH, Jefferson County, OH, Lawrence County, OH, Licking County, OH, Madison County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Tuscarawas County, OH, Vinton County, OH, Washington County, OH, Adams County, PA, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Bedford County, PA, Blair County, PA, Butler County, PA, Cambria County, PA, Cameron County, PA, Centre County, PA, Clarion County, PA, Clearfield County, PA, Clinton County, PA, Cumberland County, PA, Dauphin County, PA, Elk County, PA, Fayette County, PA, Forest County, PA, Franklin County, PA, Fulton County, PA, Greene County, PA, Huntingdon County, PA, Indiana County, PA, Jefferson County, PA, Juniata County, PA, Lawrence County, PA, Lycoming County, PA, McKean County, PA, Mifflin County, PA, Montour County, PA, Northumberland County, PA, Perry County, PA, Snyder County, PA, Somerset County, PA, Union County, PA, Venango County, PA, Washington County, PA, Westmoreland County, PA, City of Winchester, VA, Frederick County, VA, Barbour County, WV, Berkeley County, WV, Braxton County, WV, Brooke County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Gilmer County, WV, Grant County, WV, Hampshire County, WV, Hancock County, WV, Hardy County, WV, Harrison County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Marion County, WV, Marshall County, WV, Mason County, WV, Mineral County, WV, Monongalia County, WV, Morgan County, WV, Ohio County, WV, Pleasants 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, Wood County, WV
The radar
The Pittsburgh radar (KPBZ), 62 km from the middle of the area, began a volume at 01:05 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 (KAGC), launched 00:00Z, 1.1 hours before the alert went out and 50 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
- 1705 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 1355 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 6.6
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 |
|---|---|---|---|---|
| Jun 18, 11:40 PM EDT | Severe Thunderstorm Watch | SPC | Boone, Bracken, Campbell, Carroll, Gallatin, Grant and 6 more | 6 hr |
| Jun 19, 1:52 AM EDT | Mesoscale Discussion | SPC | Boone, Campbell, Kenton | 83 min |
| Jun 18, 9:37 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Baltimore, Carroll, Frederick, Garrett, Harford and 3 more | 5 hr |
| Jun 19, 12:18 AM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 14 more | 87 min |
| Jun 19, 12:06 PM EDT | Mesoscale Discussion | SPC | Albemarle, Amherst, Appomattox, Augusta, Bedford, Botetourt and 25 more | 2 hr |
| Jun 19, 2:28 PM EDT | Severe Thunderstorm Watch | SPC | Accomack, Amelia, Appomattox, Bedford, Brunswick, Buckingham and 60 more | 7 hr |
| Jun 19, 6:16 PM EDT | Mesoscale Discussion | SPC | Accomack, Amelia, Amherst, Appomattox, Bedford, Brunswick and 57 more | 59 min |
Nearby
Mesoscale Discussions in Pennsylvania, 2014Mesoscale Discussions in West Virginia, 2014Mesoscale Discussions in Ohio, 2014Every mesoscale discussion in 2014
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.