Alert archive / Indiana / Mesoscale Discussions in 2006

Mesoscale Discussion 248

March 11, 2006Wabash County, Illinois; 10 counties in Indiana; Daviess County, Henderson County, Union County, Kentucky

The Storm Prediction Center issued this mesoscale discussion at Mar 11, 2006, 10:50 PM CST for Wabash County, Illinois; 10 counties in Indiana; Daviess County, Henderson County, Union County, Kentucky. It was in force for 55 min.

The area

The outline as issued.

The facts

Issued: Mar 11, 2006, 10:50 PM CST (04:50 UTC)
Expired: Mar 11, 2006, 11:45 PM CST
In force: 55 min
Issued by: the Storm Prediction Center

Counties Wabash County, IL, Crawford County, IN, Dubois County, IN, Gibson County, IN, Orange County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Daviess County, KY, Henderson County, KY, Union County, KY

The radar

The Evansville,IN radar (KVWX), 39 km from the middle of the area, began a volume at 04:53 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

Nashville Metro, TN (KBNA), launched 00:00Z, 4.8 hours before the alert went out and 222 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: 829 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 1197 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 202 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 3.9

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
Mar 11, 6:39 PM CST	Mesoscale Discussion	SPC	Bond, Calhoun, Champaign, Christian, Clinton, DeWitt and 34 more	66 min
Mar 11, 6:49 PM CST	Tornado Watch	SPC	Bond, Clinton, Fayette, Madison, Marion, Monroe and 3 more	7 hr
Mar 11, 8:06 PM CST	Mesoscale Discussion	SPC	Bond, Champaign, Christian, Clark, Clay, Coles and 21 more	84 min
Mar 11, 9:11 PM CST	Mesoscale Discussion	SPC	Clark, Clay, Coles, Crawford, Cumberland, Edgar and 18 more	94 min
Mar 11, 9:55 PM CST	Tornado Watch	SPC	Franklin, Hamilton, Jackson, Jefferson, Perry, Wayne and 1 more	3 hr
Mar 11, 11:10 PM CST	Tornado Watch	SPC	Edwards, Wabash, White	2 hr
Mar 11, 11:13 PM CST	Mesoscale Discussion	SPC	Franklin, Jackson, Jefferson, Monroe, Perry, Randolph and 4 more	92 min
Mar 12, 1:07 AM CST	Tornado Watch	SPC	Alexander, Clay, Clinton, Edwards, Franklin, Gallatin and 22 more	7 hr
Mar 12, 3:39 AM CST	Mesoscale Discussion	SPC	Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 16 more	96 min
Mar 12, 10:02 AM CST	Severe Thunderstorm Watch	SPC	Adams, Brown, Calhoun, Pike	110 min
Mar 12, 11:17 AM CST	Mesoscale Discussion	SPC	Adams, Brown, Calhoun, Cass, Champaign, Christian and 28 more	88 min
Mar 12, 11:49 AM CST	Tornado Watch	SPC	Adams, Bond, Brown, Calhoun, Cass, Christian and 30 more	10 hr
Mar 12, 1:02 PM CST	Mesoscale Discussion	SPC	Edwards, Gallatin, Hamilton, Hardin, Johnson, Pope and 5 more	88 min
Mar 12, 2:33 PM CST	Mesoscale Discussion	SPC	Bureau, Carroll, DeKalb, Grundy, Henderson, Henry and 13 more	87 min
Mar 12, 3:02 PM CST	Mesoscale Discussion	SPC	Adams, Brown, Calhoun, Greene, Jersey, Macoupin and 6 more	88 min
Mar 12, 4:22 PM CST	Mesoscale Discussion	SPC	Bureau, Carroll, DeKalb, DuPage, Grundy, Henderson and 18 more	53 min
Mar 12, 4:49 PM CST	Tornado Watch	SPC	Bureau, Ford, Grundy, Henderson, Henry, Iroquois and 11 more	5 hr
Mar 12, 5:06 PM CST	Mesoscale Discussion	SPC	Adams, Bond, Brown, Calhoun, Cass, Christian and 26 more	84 min
Mar 12, 6:54 AM CST	Mesoscale Discussion	SPC	Perry, Spencer	96 min
Mar 12, 5:54 PM CST	Mesoscale Discussion	SPC	Allen, DeKalb, Elkhart, Fulton, Huntington, Kosciusko and 10 more	96 min

Nearby

Mesoscale Discussions in Indiana, 2006 Mesoscale Discussions in Kentucky, 2006 Mesoscale Discussions in Illinois, 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.