Alert archive / Indiana / Mesoscale Discussions in 2006

Mesoscale Discussion 508

April 15, 200618 counties in Indiana

The Storm Prediction Center issued this mesoscale discussion at Apr 15, 2006, 12:17 AM EDT for 18 counties in Indiana. It was in force for 28 min.

The area

The outline as issued.

The facts

Issued: Apr 15, 2006, 12:17 AM EDT (04:17 UTC)
Expired: Apr 15, 2006, 12:45 AM EDT
In force: 28 min
Issued by: the Storm Prediction Center

Counties Bartholomew County, IN, Brown County, IN, Decatur County, IN, Delaware County, IN, Hamilton County, IN, Hancock County, IN, Henry County, IN, Jackson County, IN, Jay County, IN, Jennings County, IN, Johnson County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Monroe County, IN, Morgan County, IN, Rush County, IN, Shelby County, IN

The radar

The Indianapolis radar (KIND), 45 km from the middle of the area, began a volume at 04:19 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, 4.3 hours before the alert went out and 192 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: 967 J/kg
Mixed-layer CIN: -94 J/kg
Mixed-layer LCL: 1477 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 432 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.3

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
Apr 14, 8:51 PM EDT	Mesoscale Discussion	SPC	Bartholomew, Benton, Boone, Brown, Carroll, Cass and 32 more	84 min
Apr 14, 11:38 PM EDT	Mesoscale Discussion	SPC	Bartholomew, Brown, Dearborn, Decatur, Delaware, Fayette and 23 more	97 min

Nearby

Mesoscale Discussions in Indiana, 2006 Every mesoscale discussion in 2006

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.