Alert archive / Ohio / Mesoscale Discussions in 2011
Mesoscale Discussion 2054
The Storm Prediction Center issued this mesoscale discussion at Aug 24, 2011, 11:48 PM EDT for 5 states. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- Aug 24, 2011, 11:48 PM EDT (03:48 UTC)
- Expired
- Aug 25, 2011, 1:15 AM EDT
- In force
- 87 min
- Issued by
- the Storm Prediction Center
All 114 counties
Dearborn County, IN, Franklin County, IN, Union County, IN, Allegany County, NY, Cattaraugus County, NY, Cayuga County, NY, Chemung County, NY, Cortland County, NY, Genesee County, NY, Livingston County, NY, Monroe County, NY, Ontario County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Tioga County, NY, Tompkins County, NY, Wayne County, NY, Wyoming County, NY, Yates County, NY, Ashland County, OH, Ashtabula County, OH, Athens County, OH, Auglaize County, OH, Belmont County, OH, Brown County, OH, Butler County, OH, Carroll County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Cuyahoga County, OH, Darke County, OH, Delaware County, OH, Erie County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Geauga County, OH, Greene County, OH, Guernsey County, OH, Hamilton County, OH, Hardin County, OH, Harrison County, OH, Highland County, OH, Hocking County, OH, Holmes County, OH, Huron County, OH, Jefferson County, OH, Knox County, OH, Lake County, OH, Licking County, OH, Logan County, OH, Lorain County, OH, Madison County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Miami County, OH, Monroe County, OH, Montgomery County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Portage County, OH, Preble County, OH, Richland County, OH, Ross County, OH, Seneca County, OH, Shelby County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Vinton County, OH, Warren County, OH, Wayne County, OH, Wyandot County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Cameron County, PA, Clarion County, PA, Clearfield County, PA, Clinton County, PA, Crawford County, PA, Elk County, PA, Erie County, PA, Forest County, PA, Indiana County, PA, Jefferson County, PA, Lawrence County, PA, McKean County, PA, Mercer County, PA, Potter County, PA, Tioga County, PA, Venango County, PA, Warren County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV, Marshall County, WV, Ohio County, WV
The radar
The Pittsburgh radar (KPBZ), 105 km from the middle of the area, began a volume at 03:49 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 00:00Z, 3.8 hours before the alert went out and 119 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
- 1205 J/kg
- Mixed-layer CIN
- -258 J/kg
- Mixed-layer LCL
- 896 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 251 m²/s²
- 0-3 km storm-relative helicity
- 235 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
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 |
|---|---|---|---|---|
| Aug 24, 9:18 PM EDT | Severe Thunderstorm Watch | SPC | Bartholomew, Brown, Daviess, Dearborn, Decatur, Fayette and 17 more | 6 hr |
| Aug 24, 9:56 PM EDT | Mesoscale Discussion | SPC | Adams, Allen, Bartholomew, Blackford, Boone, Brown and 66 more | 94 min |
| Aug 25, 2:31 AM EDT | Mesoscale Discussion | SPC | Dearborn, Franklin, Ohio | 119 min |
| Aug 25, 12:42 AM EDT | Severe Thunderstorm Watch | SPC | Steuben | 5 hr |
| Aug 24, 10:27 PM EDT | Tornado Watch | SPC | Ashland, Ashtabula, Crawford, Cuyahoga, Erie, Geauga and 22 more | 5 hr |
Nearby
Mesoscale Discussions in Ohio, 2011Mesoscale Discussions in Pennsylvania, 2011Mesoscale Discussions in New York, 2011Every mesoscale discussion in 2011
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.