Alert archive / Ohio / Mesoscale Discussions in 2014

Mesoscale Discussion 1067

June 18, 20149 counties in Indiana; 6 counties in Michigan; 10 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Jun 18, 2014, 4:43 PM EDT for 9 counties in Indiana; 6 counties in Michigan; 10 counties in Ohio. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 18, 2014, 4:43 PM EDT (20:43 UTC)
Expired: Jun 18, 2014, 6:45 PM EDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 25 counties

Adams County, IN, Allen County, IN, DeKalb County, IN, Grant County, IN, Huntington County, IN, Miami County, IN, Wabash County, IN, Wells County, IN, Whitley County, IN, Lenawee County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Saint Clair County, MI, Wayne County, MI, Allen County, OH, Defiance County, OH, Fulton County, OH, Hancock County, OH, Henry County, OH, Lucas County, OH, Paulding County, OH, Putnam County, OH, Van Wert County, OH, Wood County, OH

The radar

The Detroit radar (KDTX), 115 km from the middle of the area, began a volume at 20:43 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

Detroit, MI (KDTX), launched 12:00Z, 8.7 hours before the alert went out and 118 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: 8 J/kg
Mixed-layer CIN: -321 J/kg
Mixed-layer LCL: 754 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: -189 m²/s²
0-3 km storm-relative helicity: -135 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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, 4:32 PM EDT	Mesoscale Discussion	SPC	Blackford, Delaware, Jay, Randolph, Union, Wayne	88 min
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 17, 11:36 PM EDT	Mesoscale Discussion	SPC	Iron	84 min
Jun 18, 1:59 AM EDT	Mesoscale Discussion	SPC	Allegan, Barry, Ionia, Isabella, Kent, Lake and 10 more	91 min
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 Mesoscale Discussions in Michigan, 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.