Alert archive / Indiana / Mesoscale Discussions in 2017

Mesoscale Discussion 381

March 30, 20174 states

The Storm Prediction Center issued this mesoscale discussion at Mar 30, 2017, 3:27 PM CDT for 4 states. It was in force for 33 min.

The area

The outline as issued.

The facts

Issued: Mar 30, 2017, 3:27 PM CDT (20:27 UTC)
Expired: Mar 30, 2017, 4:00 PM CDT
In force: 33 min
Issued by: the Storm Prediction Center

All 75 counties

Champaign County, IL, Clark County, IL, Clay County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Edwards County, IL, Effingham County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jasper County, IL, Lawrence County, IL, Massac County, IL, Moultrie County, IL, Piatt County, IL, Pope County, IL, Richland County, IL, Saline County, IL, Vermilion County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Blackford County, IN, Boone County, IN, Brown County, IN, Clay County, IN, Clinton County, IN, Daviess County, IN, Delaware County, IN, Fayette County, IN, Fountain County, IN, Gibson County, IN, Grant County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Jay County, IN, Johnson County, IN, Knox County, IN, Madison County, IN, Marion County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Owen County, IN, Parke County, IN, Pike County, IN, Posey County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Shelby County, IN, Sullivan County, IN, Tippecanoe County, IN, Tipton County, IN, Union County, IN, Vanderburgh County, IN, Vermillion County, IN, Vigo County, IN, Warren County, IN, Wayne County, IN, Crittenden County, KY, Henderson County, KY, Livingston County, KY, McCracken County, KY, Union County, KY, Darke County, OH, Mercer County, OH, Preble County, OH

The radar

The Indianapolis radar (KIND), 59 km from the middle of the area, began a volume at 20:31 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

Lincoln, IL (KILX), launched 12:00Z, 8.5 hours before the alert went out and 176 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 847 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 347 m²/s²
0-3 km storm-relative helicity: 373 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
Mar 30, 11:56 AM CDT	Mesoscale Discussion	SPC	Alexander, Bond, Calhoun, Christian, Clay, Clinton and 37 more	64 min
Mar 30, 12:31 PM CDT	Severe Thunderstorm Watch	SPC	Alexander, Bond, Cass, Champaign, Christian, Clark and 51 more	7 hr
Mar 30, 12:55 PM CDT	Mesoscale Discussion	SPC	Bartholomew, Boone, Brown, Clark, Clay, Clinton and 54 more	2 hr
Mar 30, 2:03 PM CDT	Tornado Watch	SPC	Adams, Bartholomew, Blackford, Boone, Brown, Carroll and 42 more	5 hr
Mar 30, 5:40 PM CDT	Mesoscale Discussion	SPC	Clark, Crawford, Dubois, Floyd, Gibson, Harrison and 7 more	65 min
Mar 30, 6:05 PM CDT	Mesoscale Discussion	SPC	Adams, Bartholomew, Blackford, Boone, Brown, Daviess and 31 more	55 min

Nearby

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