Alert archive / Indiana / Mesoscale Discussions in 2025

Mesoscale Discussion 367

April 2, 202521 counties in Indiana

The Storm Prediction Center issued this mesoscale discussion at Apr 2, 2025, 9:20 PM EDT for 21 counties in Indiana. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: Apr 2, 2025, 9:20 PM EDT (01:20 UTC)
Expired: Apr 2, 2025, 10:45 PM EDT
In force: 85 min
Issued by: the Storm Prediction Center
Concerning: Tornado watch 99

All 21 counties

Bartholomew County, IN, Boone County, IN, Brown County, IN, Daviess County, IN, Delaware County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Johnson County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Monroe County, IN, Morgan County, IN, Owen County, IN, Rush County, IN, Shelby County, IN, Tipton County, IN

The radar

The Indianapolis radar (KIND), 18 km from the middle of the area, began a volume at 01:19 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, 1.3 hours before the alert went out and 210 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: 539 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 1448 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 199 m²/s²
0-3 km storm-relative helicity: 397 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 8.0

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
Apr 2, 8:45 PM EDT	Mesoscale Discussion	SPC	Adams, Bartholomew, Blackford, Dearborn, Decatur, Delaware and 16 more	2 hr
Apr 2, 9:13 PM EDT	Tornado Watch	SPC	Bartholomew, Dearborn, Decatur, Delaware, Fayette, Franklin and 13 more	7 hr
Apr 2, 10:46 PM EDT	Mesoscale Discussion	SPC	Adams, Bartholomew, Brown, Dearborn, Decatur, Delaware and 12 more	89 min
Apr 2, 10:53 PM EDT	Mesoscale Discussion	SPC	Clark, Crawford, Floyd, Harrison, Jefferson, Jennings and 6 more	2 hr

Nearby

Mesoscale Discussions in Indiana, 2025 Every mesoscale discussion in 2025

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.