Alert archive / Ohio / Mesoscale Discussions in 2011

Mesoscale Discussion 1125

June 7, 201131 counties in Ohio; Greene County, Pennsylvania; 18 counties in West Virginia

The Storm Prediction Center issued this mesoscale discussion at Jun 7, 2011, 10:32 AM EDT for 31 counties in Ohio; Greene County, Pennsylvania; 18 counties in West Virginia. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued: Jun 7, 2011, 10:32 AM EDT (14:32 UTC)
Expired: Jun 7, 2011, 12:00 PM EDT
In force: 88 min
Issued by: the Storm Prediction Center

All 50 counties

Ashland County, OH, Athens County, OH, Belmont County, OH, Carroll County, OH, Coshocton County, OH, Crawford County, OH, Erie County, OH, Fairfield County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Holmes County, OH, Huron County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Lorain County, OH, Medina County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Richland County, OH, Stark County, OH, Tuscarawas County, OH, Vinton County, OH, Washington County, OH, Wayne County, OH, Greene County, PA, Brooke County, WV, Calhoun County, WV, Doddridge County, WV, Gilmer County, WV, Hancock County, WV, Harrison County, WV, Jackson County, WV, Lewis County, WV, Marshall County, WV, Mason County, WV, Ohio County, WV, Pleasants County, WV, Ritchie County, WV, Roane County, WV, Tyler County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV

The radar

The Pittsburgh radar (KPBZ), 137 km from the middle of the area, began a volume at 14:32 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 nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 2.5 hours before the alert went out and 142 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 682 J/kg
Mixed-layer CIN: -120 J/kg
Mixed-layer LCL: 1272 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 149 m²/s²
0-3 km storm-relative helicity: 160 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 7, 5:29 AM EDT	Mesoscale Discussion	SPC	Ashland, Ashtabula, Columbiana, Cuyahoga, Erie, Geauga and 11 more	3 hr
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, 2:56 PM EDT	Mesoscale Discussion	SPC	Adams, Brown, Champaign, Clark, Clermont, Clinton and 15 more	94 min
Jun 7, 6:04 PM EDT	Mesoscale Discussion	SPC	Logan, McDowell, Mercer, Mingo, Monroe, Raleigh and 2 more	116 min

Nearby

Mesoscale Discussions in Ohio, 2011 Mesoscale Discussions in West Virginia, 2011 Mesoscale Discussions in Pennsylvania, 2011 Every 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.