Alert archive / Ohio / Mesoscale Discussions in 2011

Mesoscale Discussion 956

May 25, 201122 counties in Indiana; Hillsdale County, Lenawee County, Monroe County, Michigan; 42 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at May 25, 2011, 1:26 PM EDT for 22 counties in Indiana; Hillsdale County, Lenawee County, Monroe County, Michigan; 42 counties in Ohio. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued: May 25, 2011, 1:26 PM EDT (17:26 UTC)
Expired: May 25, 2011, 3:00 PM EDT
In force: 94 min
Issued by: the Storm Prediction Center

All 67 counties

Adams County, IN, Allen County, IN, Blackford County, IN, DeKalb County, IN, Delaware County, IN, Grant County, IN, Hamilton County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jay County, IN, Madison County, IN, Miami County, IN, Noble County, IN, Randolph County, IN, Steuben County, IN, Tipton County, IN, Union County, IN, Wabash County, IN, Wayne County, IN, Wells County, IN, Whitley County, IN, Hillsdale County, MI, Lenawee County, MI, Monroe County, MI, Allen County, OH, Auglaize County, OH, Champaign County, OH, Clark County, OH, Clinton County, OH, Crawford County, OH, Darke County, OH, Defiance County, OH, Delaware County, OH, Erie County, OH, Fayette County, OH, Franklin County, OH, Fulton County, OH, Greene County, OH, Hancock County, OH, Hardin County, OH, Henry County, OH, Huron County, OH, Licking County, OH, Logan County, OH, Lucas County, OH, Madison County, OH, Marion County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Morrow County, OH, Ottawa County, OH, Paulding County, OH, Pickaway County, OH, Preble County, OH, Putnam County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Shelby County, OH, Union County, OH, Van Wert County, OH, Warren County, OH, Williams County, OH, Wood County, OH, Wyandot County, OH

The radar

The Northern Indiana radar (KIWX), 119 km from the middle of the area, began a volume at 17:26 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Tornado Watch 372May 25, 1:55 PM EDT

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 5.4 hours before the alert went out and 181 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: 49 J/kg
Mixed-layer CIN: -199 J/kg
Mixed-layer LCL: 1232 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 80 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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
May 25, 6:46 AM EDT	Tornado Watch	SPC	Benton, Jasper, Lake, Newton, Porter	7 hr
May 25, 8:31 AM EDT	Mesoscale Discussion	SPC	Gibson, Posey, Vanderburgh, Warrick	59 min
May 25, 8:48 AM EDT	Mesoscale Discussion	SPC	Benton, Boone, Brown, Carroll, Cass, Clay and 35 more	87 min
May 25, 9:33 AM EDT	Mesoscale Discussion	SPC	Bartholomew, Benton, Blackford, Boone, Brown, Carroll and 43 more	87 min
May 25, 9:50 AM EDT	Tornado Watch	SPC	Adams, Allen, Bartholomew, Blackford, Boone, Brown and 57 more	9 hr
May 25, 11:18 AM EDT	Mesoscale Discussion	SPC	Brown, Clay, Crawford, Daviess, Dubois, Floyd and 15 more	57 min
May 25, 12:02 PM EDT	Mesoscale Discussion	SPC	Gibson, Perry, Posey, Spencer, Vanderburgh, Warrick	28 min
May 25, 12:09 PM EDT	Tornado Watch PDS	SPC	Clark, Crawford, Dubois, Floyd, Gibson, Harrison and 10 more	10 hr
May 25, 1:55 PM EDT	Tornado Watch	SPC	Dearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more	8 hr
May 25, 3:31 PM EDT	Tornado Watch	SPC	Benton, Jasper, Newton	7 hr
May 25, 6:19 PM EDT	Mesoscale Discussion	SPC	Bartholomew, Blackford, Boone, Brown, Clay, Clinton and 45 more	86 min
May 25, 6:44 PM EDT	Tornado Watch PDS	SPC	Adams, Bartholomew, Blackford, Boone, Brown, Carroll and 45 more	6 hr
May 25, 7:25 PM EDT	Mesoscale Discussion	SPC	Clark, Crawford, Daviess, Dubois, Floyd, Gibson and 12 more	2 hr
May 25, 4:45 PM EDT	Mesoscale Discussion	SPC	Monroe	60 min

Nearby

Mesoscale Discussions in Ohio, 2011 Mesoscale Discussions in Indiana, 2011 Mesoscale Discussions in Michigan, 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.