Alert archive / Ohio / Mesoscale Discussions in 2011
Mesoscale Discussion 1123
The Storm Prediction Center issued this mesoscale discussion at Jun 7, 2011, 5:29 AM EDT for 17 counties in Ohio; 5 counties in Pennsylvania. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 7, 2011, 5:29 AM EDT (09:29 UTC)
- Expired
- Jun 7, 2011, 8:00 AM EDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 22 counties
Ashland County, OH, Ashtabula County, OH, Columbiana County, OH, Cuyahoga County, OH, Erie County, OH, Geauga County, OH, Huron County, OH, Lake County, OH, Lorain County, OH, Mahoning County, OH, Medina County, OH, Portage County, OH, Richland County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Wayne County, OH, Crawford County, PA, Erie County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA
The radar
The Cleveland radar (KCLE), 57 km from the middle of the area, began a volume at 09:29 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, 9.5 hours before the alert went out and 190 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2389 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 110 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 7, 6:47 AM EDT | Severe Thunderstorm Watch | SPC | Ashland, Ashtabula, Carroll, Columbiana, Coshocton, Cuyahoga and 18 more | 5 hr |
| Jun 7, 8:22 AM EDT | Mesoscale Discussion | SPC | Ashland, Ashtabula, Carroll, Columbiana, Coshocton, Cuyahoga and 15 more | 113 min |
| Jun 7, 10:32 AM EDT | Mesoscale Discussion | SPC | Ashland, Athens, Belmont, Carroll, Coshocton, Crawford and 25 more | 88 min |
| Jun 7, 2:56 PM EDT | Mesoscale Discussion | SPC | Adams, Brown, Champaign, Clark, Clermont, Clinton and 15 more | 94 min |
Nearby
Mesoscale Discussions in Ohio, 2011Mesoscale Discussions in Pennsylvania, 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.