Alert archive / Ohio / Mesoscale Discussions in 2019

Mesoscale Discussion 855

May 28, 201934 counties in Indiana; 47 counties in Ohio; Crawford County, Lawrence County, Mercer County, Pennsylvania

The Storm Prediction Center issued this mesoscale discussion at May 28, 2019, 3:24 PM EDT for 34 counties in Indiana; 47 counties in Ohio; Crawford County, Lawrence County, Mercer County, Pennsylvania. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 28, 2019, 3:24 PM EDT (19:24 UTC)
Expired: May 28, 2019, 5:30 PM EDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 84 counties

Adams County, IN, Allen County, IN, Benton County, IN, Blackford County, IN, Boone County, IN, Carroll County, IN, Cass County, IN, Clinton County, IN, Delaware County, IN, Fountain County, IN, Fulton County, IN, Grant County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jay County, IN, Madison County, IN, Marion County, IN, Miami County, IN, Montgomery County, IN, Parke County, IN, Pulaski County, IN, Randolph County, IN, Tippecanoe County, IN, Tipton County, IN, Vermillion County, IN, Wabash County, IN, Warren County, IN, Wells County, IN, White County, IN, Whitley County, IN, Allen County, OH, Ashland County, OH, Ashtabula County, OH, Auglaize County, OH, Carroll County, OH, Champaign County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Cuyahoga County, OH, Darke County, OH, Defiance County, OH, Delaware County, OH, Erie County, OH, Geauga County, OH, Hancock County, OH, Hardin County, OH, Henry County, OH, Holmes County, OH, Huron County, OH, Knox County, OH, Lake County, OH, Logan County, OH, Lorain County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Mercer County, OH, Miami County, OH, Morrow County, OH, Ottawa County, OH, Paulding County, OH, Portage County, OH, Putnam County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Shelby County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Van Wert County, OH, Wayne County, OH, Wood County, OH, Wyandot County, OH, Crawford County, PA, Lawrence County, PA, Mercer County, PA

The radar

The Cincinnati radar (KILN), 160 km from the middle of the area, began a volume at 19:26 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.4 hours before the alert went out and 158 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: 697 J/kg
Mixed-layer CIN: -114 J/kg
Mixed-layer LCL: 1104 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 216 m²/s²
0-3 km storm-relative helicity: 230 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.7

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 27, 8:20 PM EDT	Tornado Watch	SPC	Fayette, Union, Wayne	6 hr
May 27, 9:08 PM EDT	Mesoscale Discussion	SPC	Adams, Blackford, Delaware, Grant, Henry, Jay and 3 more	97 min
May 28, 12:16 PM EDT	Mesoscale Discussion	SPC	Adams, Allen, Benton, Blackford, Boone, Carroll and 36 more	119 min
May 28, 1:01 PM EDT	Severe Thunderstorm Watch	SPC	Benton	5 hr
May 28, 1:22 PM EDT	Severe Thunderstorm Watch	SPC	Adams, Allen, Blackford, Boone, Carroll, Cass and 20 more	7 hr
May 28, 7:13 PM EDT	Mesoscale Discussion	SPC	Adams, Blackford, Delaware, Jay, Madison, Randolph	92 min
May 27, 11:32 PM EDT	Mesoscale Discussion	SPC	Athens, Champaign, Clark, Clinton, Coshocton, Delaware and 26 more	88 min
May 28, 12:08 AM EDT	Tornado Watch	SPC	Athens, Belmont, Guernsey, Meigs, Monroe, Morgan and 5 more	4 hr
May 28, 2:03 AM EDT	Mesoscale Discussion	SPC	Athens, Belmont, Guernsey, Meigs, Monroe, Morgan and 5 more	117 min
May 28, 1:48 PM EDT	Tornado Watch	SPC	Carroll, Columbiana, Harrison, Jefferson, Tuscarawas	8 hr
May 28, 1:02 PM EDT	Mesoscale Discussion	SPC	Adams, Allegheny, Armstrong, Beaver, Bedford, Berks and 58 more	118 min
May 28, 4:43 PM EDT	Mesoscale Discussion	SPC	Adams, Allegheny, Armstrong, Beaver, Bedford, Berks and 59 more	2 hr

Nearby

Mesoscale Discussions in Ohio, 2019 Mesoscale Discussions in Indiana, 2019 Mesoscale Discussions in Pennsylvania, 2019 Every mesoscale discussion in 2019

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.