Alert archive / Ohio / Mesoscale Discussions in 2014

Mesoscale Discussion 1066

June 18, 20146 counties in Indiana; 44 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Jun 18, 2014, 4:32 PM EDT for 6 counties in Indiana; 44 counties in Ohio. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued: Jun 18, 2014, 4:32 PM EDT (20:32 UTC)
Expired: Jun 18, 2014, 6:00 PM EDT
In force: 88 min
Issued by: the Storm Prediction Center
Chance of a watch: 60%

All 50 counties

Blackford County, IN, Delaware County, IN, Jay County, IN, Randolph County, IN, Union County, IN, Wayne County, IN, Allen County, OH, Ashland County, OH, Auglaize County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clinton County, OH, Coshocton 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, Hancock County, OH, Hardin County, OH, Holmes County, OH, Huron County, OH, Knox County, OH, Licking County, OH, Logan County, OH, Lorain County, OH, Madison County, OH, Marion County, OH, Medina County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Morrow County, OH, Pickaway County, OH, Portage County, OH, Preble County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Shelby County, OH, Stark County, OH, Summit County, OH, Union County, OH, Warren County, OH, Wayne County, OH, Wyandot County, OH

The radar

The Cleveland radar (KCLE), 114 km from the middle of the area, began a volume at 20:35 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.5 hours before the alert went out and 161 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: 1489 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 1071 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: -52 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.7

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 17, 11:13 PM EDT	Severe Thunderstorm Watch	SPC	Lake, Porter	6 hr
Jun 18, 11:32 AM EDT	Mesoscale Discussion	SPC	Allen, DeKalb, Elkhart, Kosciusko, LaGrange, LaPorte and 6 more	118 min
Jun 18, 1:55 PM EDT	Severe Thunderstorm Watch	SPC	Adams, Allen, DeKalb, Elkhart, Fulton, Huntington and 12 more	6 hr
Jun 18, 3:56 PM EDT	Mesoscale Discussion	SPC	Blackford, Boone, Brown, Carroll, Clay, Clinton and 23 more	94 min
Jun 18, 4:43 PM EDT	Mesoscale Discussion	SPC	Adams, Allen, DeKalb, Grant, Huntington, Miami and 3 more	2 hr
Jun 18, 6:30 PM EDT	Mesoscale Discussion	SPC	Bartholomew, Dearborn, Decatur, Fayette, Franklin, Henry and 6 more	60 min
Jun 18, 7:00 PM EDT	Severe Thunderstorm Watch	SPC	Dearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more	5 hr
Jun 18, 4:55 PM EDT	Severe Thunderstorm Watch	SPC	Ashland, Ashtabula, Crawford, Cuyahoga, Erie, Geauga and 19 more	4 hr

Nearby

Mesoscale Discussions in Ohio, 2014 Mesoscale Discussions in Indiana, 2014 Every 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.