Alert archive / Indiana / Mesoscale Discussions in 2018

Mesoscale Discussion 724

June 13, 20184 states

The Storm Prediction Center issued this mesoscale discussion at Jun 13, 2018, 3:14 PM CDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jun 13, 2018, 3:14 PM CDT (20:14 UTC)
Expired: Jun 13, 2018, 5:15 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Chance of a watch: 5%

All 65 counties

Clark County, IL, Crawford County, IL, Edwards County, IL, Jasper County, IL, Lawrence County, IL, Richland County, IL, Wabash County, IL, Bartholomew County, IN, Brown County, IN, Clay County, IN, Daviess County, IN, Dearborn County, IN, Decatur County, IN, Fayette County, IN, Franklin County, IN, Greene County, IN, Hancock County, IN, Henry County, IN, Jackson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Morgan County, IN, Ohio County, IN, Owen County, IN, Ripley County, IN, Rush County, IN, Shelby County, IN, Sullivan County, IN, Union County, IN, Vigo County, IN, Wayne County, IN, Boone County, KY, Butler County, OH, Champaign County, OH, Clark County, OH, Clinton County, OH, Coshocton County, OH, Darke County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Greene County, OH, Hamilton County, OH, Hocking County, OH, Holmes County, OH, Knox County, OH, Licking County, OH, Logan County, OH, Madison County, OH, Miami County, OH, Montgomery County, OH, Morrow County, OH, Muskingum County, OH, Perry County, OH, Pickaway County, OH, Preble County, OH, Union County, OH, Warren County, OH, Wayne County, OH

The radar

The Indianapolis radar (KIND), 94 km from the middle of the area, began a volume at 20:15 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, 8.2 hours before the alert went out and 122 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: 377 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 573 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 44 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
Jun 13, 5:10 PM CDT	Mesoscale Discussion	SPC	Belmont, Carroll, Columbiana, Guernsey, Harrison, Jefferson and 2 more	95 min
Jun 13, 5:33 PM CDT	Severe Thunderstorm Watch	SPC	Belmont, Jefferson	4 hr

Nearby

Mesoscale Discussions in Indiana, 2018 Mesoscale Discussions in Ohio, 2018 Mesoscale Discussions in Illinois, 2018 Every mesoscale discussion in 2018

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.