Alert archive / Ohio / Mesoscale Discussions in 2017

Mesoscale Discussion 905

May 28, 20174 states

The Storm Prediction Center issued this mesoscale discussion at May 28, 2017, 5:46 PM EDT for 4 states. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued: May 28, 2017, 5:46 PM EDT (21:46 UTC)
Expired: May 28, 2017, 6:45 PM EDT
In force: 59 min
Issued by: the Storm Prediction Center

All 66 counties

Adams County, IN, Allen County, IN, Blackford County, IN, Boone County, IN, Clinton County, IN, DeKalb County, IN, Delaware County, IN, Grant County, IN, Hamilton County, IN, Howard County, IN, Huntington County, IN, Jay County, IN, Madison County, IN, Miami County, IN, Tipton County, IN, Wabash County, IN, Wells County, IN, Whitley County, IN, Lenawee County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Washtenaw County, MI, Wayne County, MI, Allen County, OH, Ashtabula County, OH, Auglaize County, OH, Crawford County, OH, Cuyahoga County, OH, Defiance County, OH, Erie County, OH, Fulton County, OH, Geauga County, OH, Hancock County, OH, Hardin County, OH, Henry County, OH, Huron County, OH, Lake County, OH, Lorain County, OH, Lucas County, OH, Mahoning County, OH, Medina County, OH, Mercer County, OH, Ottawa County, OH, Paulding County, OH, Portage County, OH, Putnam County, OH, Sandusky County, OH, Seneca County, OH, Summit County, OH, Trumbull County, OH, Van Wert County, OH, Williams County, OH, Wood County, OH, Wyandot County, OH, Armstrong County, PA, Butler County, PA, Clarion County, PA, Crawford County, PA, Erie County, PA, Forest County, PA, Jefferson County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Warren County, PA

The radar

The Cleveland radar (KCLE), 57 km from the middle of the area, began a volume at 21:45 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, 9.8 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1059 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 28, 1:16 PM EDT	Mesoscale Discussion	SPC	Adams, Allen, Benton, Blackford, Boone, Carroll and 36 more	119 min
May 28, 1:56 PM EDT	Severe Thunderstorm Watch	SPC	Adams, Allen, Blackford, Cass, DeKalb, Elkhart and 17 more	6 hr
May 28, 4:09 PM EDT	Mesoscale Discussion	SPC	Adams, Allen, Boone, Carroll, Cass, Clinton and 24 more	66 min
May 28, 7:39 PM EDT	Mesoscale Discussion	SPC	Adams, Blackford, Boone, Carroll, Clinton, Delaware and 15 more	96 min
May 28, 12:54 PM EDT	Mesoscale Discussion	SPC	Alpena, Antrim, Cheboygan, Clare, Crawford, Emmet and 11 more	66 min
May 27, 8:07 PM EDT	Mesoscale Discussion	SPC	Adams, Athens, Gallia, Jackson, Lawrence, Meigs and 4 more	83 min

Nearby

Mesoscale Discussions in Ohio, 2017 Mesoscale Discussions in Indiana, 2017 Mesoscale Discussions in Pennsylvania, 2017 Every mesoscale discussion in 2017

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.