Alert archive / Indiana / Mesoscale Discussions in 2017

Mesoscale Discussion 1027

June 14, 201711 counties in Illinois; 57 counties in Indiana; 15 counties in Kentucky

The Storm Prediction Center issued this mesoscale discussion at Jun 14, 2017, 12:44 PM CDT for 11 counties in Illinois; 57 counties in Indiana; 15 counties in Kentucky. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Jun 14, 2017, 12:44 PM CDT (17:44 UTC)
Expired: Jun 14, 2017, 3:15 PM CDT
In force: 3 hr
Issued by: the Storm Prediction Center
Chance of a watch: 40%

All 83 counties

Champaign County, IL, Clark County, IL, Coles County, IL, DeWitt County, IL, Douglas County, IL, Edgar County, IL, Logan County, IL, Macon County, IL, Moultrie County, IL, Piatt County, IL, Vermilion County, IL, Bartholomew County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Cass County, IN, Clark County, IN, Clay County, IN, Clinton County, IN, Dearborn County, IN, Decatur County, IN, Delaware County, IN, Fayette County, IN, Floyd County, IN, Fountain County, IN, Franklin County, IN, Grant County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Miami County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Ohio County, IN, Orange County, IN, Owen County, IN, Parke County, IN, Putnam County, IN, Ripley County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Sullivan County, IN, Switzerland County, IN, Tippecanoe County, IN, Tipton County, IN, Union County, IN, Vermillion County, IN, Vigo County, IN, Wabash County, IN, Warren County, IN, Washington County, IN, Wayne County, IN, Wells County, IN, Anderson County, KY, Boone County, KY, Carroll County, KY, Franklin County, KY, Gallatin County, KY, Grant County, KY, Henry County, KY, Jefferson County, KY, Oldham County, KY, Owen County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Trimble County, KY, Woodford County, KY

The radar

The Indianapolis radar (KIND), 74 km from the middle of the area, began a volume at 17:47 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.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 5.7 hours before the alert went out and 133 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: 971 J/kg
Mixed-layer CIN: -88 J/kg
Mixed-layer LCL: 1054 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -9 m²/s²
0-3 km storm-relative helicity: 13 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 14, 12:06 PM CDT	Mesoscale Discussion	SPC	Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 27 more	2 hr
Jun 14, 12:40 PM CDT	Mesoscale Discussion	SPC	Bond, Calhoun, Christian, Clay, Clinton, Effingham and 23 more	3 hr
Jun 14, 12:40 PM CDT	Severe Thunderstorm Watch	SPC	Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 35 more	7 hr
Jun 14, 1:04 PM CDT	Severe Thunderstorm Watch	SPC	Adams, Bond, Brown, Calhoun, Cass, Champaign and 35 more	9 hr
Jun 14, 3:02 PM CDT	Mesoscale Discussion	SPC	Cook, Lake	118 min
Jun 14, 4:59 PM CDT	Mesoscale Discussion	SPC	Cook, DuPage, Grundy, Iroquois, Kane, Kankakee and 4 more	91 min
Jun 14, 6:11 PM CDT	Mesoscale Discussion	SPC	Adams, Bond, Brown, Calhoun, Cass, Christian and 22 more	64 min
Jun 14, 3:32 PM CDT	Severe Thunderstorm Watch	SPC	Cass, Elkhart, Fulton, Kosciusko, LaPorte, Marshall and 6 more	4 hr
Jun 14, 5:31 PM CDT	Mesoscale Discussion	SPC	Boone, Brown, Clinton, Hamilton, Hancock, Hendricks and 8 more	59 min
Jun 14, 1:20 PM CDT	Mesoscale Discussion	SPC	Boyd, Breathitt, Elliott, Floyd, Harlan, Johnson and 10 more	2 hr

Nearby

Mesoscale Discussions in Indiana, 2017 Mesoscale Discussions in Kentucky, 2017 Mesoscale Discussions in Illinois, 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.