Alert archive / Indiana / Mesoscale Discussions in 2016

Mesoscale Discussion 527

May 1, 20164 states

The Storm Prediction Center issued this mesoscale discussion at May 1, 2016, 8:21 PM CDT for 4 states. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued: May 1, 2016, 8:21 PM CDT (01:21 UTC)
Expired: May 1, 2016, 10:15 PM CDT
In force: 114 min
Issued by: the Storm Prediction Center

All 78 counties

Crawford County, IL, Edwards County, IL, Lawrence County, IL, Richland County, IL, Wabash County, IL, Bartholomew County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Clay County, IN, Clinton County, IN, Daviess County, IN, Dearborn County, IN, Decatur County, IN, Delaware County, IN, Dubois County, IN, Fayette County, IN, Franklin County, IN, Gibson County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Jackson County, IN, Jay County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Knox County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Ohio County, IN, Orange County, IN, Owen County, IN, Parke County, IN, Pike County, IN, Putnam County, IN, Randolph County, IN, Ripley County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Sullivan County, IN, Switzerland County, IN, Tipton County, IN, Union County, IN, Vigo County, IN, Washington County, IN, Wayne County, IN, Boone County, KY, Campbell County, KY, Kenton County, KY, Adams 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, Highland County, OH, Madison County, OH, Miami County, OH, Montgomery County, OH, Pickaway County, OH, Preble County, OH, Shelby County, OH, Warren County, OH

The radar

The Indianapolis radar (KIND), 67 km from the middle of the area, began a volume at 01:22 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 00:00Z, 1.4 hours before the alert went out and 189 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: 326 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 1556 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 114 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

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 2, 12:34 PM CDT	Mesoscale Discussion	SPC	Bell, Harlan, Letcher, Pike	116 min
May 2, 1:17 PM CDT	Severe Thunderstorm Watch	SPC	Bell, Breathitt, Clay, Floyd, Harlan, Johnson and 10 more	8 hr

Nearby

Mesoscale Discussions in Indiana, 2016 Mesoscale Discussions in Ohio, 2016 Mesoscale Discussions in Illinois, 2016 Every mesoscale discussion in 2016

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.