Alert archive / Indiana / Mesoscale Discussions in 2015

Mesoscale Discussion 2044

December 23, 201540 counties in Indiana; 11 counties in Kentucky; 24 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Dec 23, 2015, 3:16 PM EST for 40 counties in Indiana; 11 counties in Kentucky; 24 counties in Ohio. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued: Dec 23, 2015, 3:16 PM EST (20:16 UTC)
Expired: Dec 23, 2015, 4:15 PM EST
In force: 59 min
Issued by: the Storm Prediction Center

All 75 counties

Bartholomew County, IN, Brown County, IN, Clark County, IN, Crawford County, IN, Dearborn County, IN, Decatur County, IN, Delaware County, IN, Dubois County, IN, Fayette County, IN, Floyd County, IN, Franklin County, IN, Hamilton County, IN, Hancock County, IN, Harrison County, IN, Hendricks County, IN, Henry County, IN, Jackson County, IN, Jay County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Morgan County, IN, Ohio County, IN, Orange County, IN, Owen County, IN, Putnam County, IN, Randolph County, IN, Ripley County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Switzerland County, IN, Union County, IN, Washington County, IN, Wayne County, IN, Boone County, KY, Campbell County, KY, Carroll County, KY, Gallatin County, KY, Grant County, KY, Henry County, KY, Kenton County, KY, Oldham County, KY, Owen County, KY, Pendleton County, KY, Trimble County, KY, Auglaize County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Darke County, OH, Fayette County, OH, Franklin County, OH, Greene County, OH, Hamilton County, OH, Hardin County, OH, Highland County, OH, Logan County, OH, Madison County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Pickaway County, OH, Preble County, OH, Shelby County, OH, Union County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 94 km from the middle of the area, began a volume at 20:16 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.

Severe Thunderstorm Watch 563Dec 23, 4:15 PM EST

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.3 hours before the alert went out and 96 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: 133 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 583 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 30 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Dec 23, 10:05 AM EST	Mesoscale Discussion	SPC	Gibson, Posey, Vanderburgh	85 min
Dec 23, 10:13 AM EST	Tornado Watch	SPC	Gibson, Posey, Vanderburgh	8 hr
Dec 23, 10:41 AM EST	Mesoscale Discussion	SPC	Lake, Newton	2 hr
Dec 23, 11:29 AM EST	Mesoscale Discussion	SPC	Posey, Vanderburgh	91 min
Dec 23, 1:06 PM EST	Mesoscale Discussion	SPC	Bartholomew, Brown, Clark, Clay, Crawford, Daviess and 31 more	84 min
Dec 23, 1:28 PM EST	Tornado Watch	SPC	Bartholomew, Boone, Brown, Carroll, Clark, Clay and 51 more	8 hr
Dec 23, 2:55 PM EST	Mesoscale Discussion	SPC	Allen, DeKalb, Elkhart, Huntington, Kosciusko, LaGrange and 4 more	95 min
Dec 23, 5:59 PM EST	Mesoscale Discussion	SPC	Clark, Crawford, Dubois, Floyd, Harrison, Orange and 4 more	2 hr
Dec 23, 7:13 AM EST	Mesoscale Discussion	SPC	Ballard, Carlisle, Fulton, Graves, Hickman, Livingston and 1 more	2 hr
Dec 23, 3:49 PM EST	Mesoscale Discussion	SPC	Calloway	86 min
Dec 23, 4:17 PM EST	Severe Thunderstorm Watch	SPC	Boone, Bracken, Campbell, Gallatin, Grant, Kenton and 5 more	7 hr
Dec 23, 6:26 PM EST	Mesoscale Discussion	SPC	Ashland, Champaign, Clark, Clinton, Coshocton, Crawford and 27 more	2 hr

Nearby

Mesoscale Discussions in Indiana, 2015 Mesoscale Discussions in Ohio, 2015 Mesoscale Discussions in Kentucky, 2015 Every mesoscale discussion in 2015

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.