Alert archive / Ohio / Mesoscale Discussions in 2015
Mesoscale Discussion 994
The Storm Prediction Center issued this mesoscale discussion at Jun 12, 2015, 6:53 PM EDT for 5 states. It was in force for 97 min.
The area
The outline as issued.
The facts
- Issued
- Jun 12, 2015, 6:53 PM EDT (22:53 UTC)
- Expired
- Jun 12, 2015, 8:30 PM EDT
- In force
- 97 min
- Issued by
- the Storm Prediction Center
All 87 counties
Randolph County, IN, Union County, IN, Wayne County, IN, Garrett County, MD, Allen County, OH, Ashland County, OH, Athens County, OH, Auglaize County, OH, Belmont County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clinton County, OH, Crawford County, OH, Darke County, OH, Delaware County, OH, Erie County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Greene County, OH, Hamilton County, OH, Hancock County, OH, Hardin County, OH, Highland County, OH, Hocking County, OH, Huron County, OH, Knox County, OH, Licking County, OH, Logan County, OH, Madison County, OH, Marion County, OH, Mercer County, OH, Miami County, OH, Monroe County, OH, Montgomery County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Ottawa County, OH, Perry County, OH, Pickaway County, OH, Preble County, OH, Putnam County, OH, Richland County, OH, Ross County, OH, Sandusky County, OH, Seneca County, OH, Shelby County, OH, Union County, OH, Van Wert County, OH, Vinton County, OH, Warren County, OH, Washington County, OH, Wood County, OH, Wyandot County, OH, Allegheny County, PA, Armstrong County, PA, Cambria County, PA, Cameron County, PA, Centre County, PA, Clarion County, PA, Clearfield County, PA, Clinton County, PA, Elk County, PA, Fayette County, PA, Greene County, PA, Indiana County, PA, Jefferson County, PA, Lycoming County, PA, Potter County, PA, Somerset County, PA, Tioga County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Harrison County, WV, Marion County, WV, Marshall County, WV, Monongalia County, WV, Ohio County, WV, Preston County, WV, Taylor County, WV, Tucker County, WV, Tyler County, WV, Wetzel County, WV
The radar
The Pittsburgh radar (KPBZ), 57 km from the middle of the area, began a volume at 22:53 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.
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 12:00Z, 10.9 hours before the alert went out and 69 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
- 32 J/kg
- Mixed-layer CIN
- -104 J/kg
- Mixed-layer LCL
- 1545 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 142 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 |
|---|---|---|---|---|
| Jun 12, 4:32 PM EDT | Severe Thunderstorm Watch | SPC | Adams, Allen, Blackford, Boone, Carroll, Cass and 22 more | 4 hr |
| Jun 12, 1:14 PM EDT | Severe Thunderstorm Watch | SPC | Garrett | 8 hr |
| Jun 12, 2:03 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Frederick, Howard, Montgomery, Washington | 87 min |
| Jun 12, 12:52 PM EDT | Mesoscale Discussion | SPC | Allen, Ashland, Ashtabula, Auglaize, Carroll, Champaign and 40 more | 113 min |
| Jun 12, 4:21 PM EDT | Mesoscale Discussion | SPC | Athens, Belmont, Carroll, Columbiana, Guernsey, Harrison and 9 more | 84 min |
| Jun 12, 2:54 PM EDT | Severe Thunderstorm Watch | SPC | McKean, Potter, Tioga, Warren | 6 hr |
| Jun 12, 7:25 PM EDT | Severe Thunderstorm Watch | SPC | Bedford, Blair, Bradford, Cambria, Centre, Columbia and 17 more | 4 hr |
Nearby
Mesoscale Discussions in Ohio, 2015Mesoscale Discussions in Pennsylvania, 2015Mesoscale Discussions in West Virginia, 2015Every mesoscale discussion in 2015
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.