Alert archive / Illinois / Tornado Watches in 2006

Tornado Watch 81

March 13, 20064 states

The Storm Prediction Center issued this tornado watch at Mar 13, 2006, 1:06 AM CST for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Mar 13, 2006, 1:06 AM CST (07:06 UTC)
Expired: Mar 13, 2006, 7:00 AM CST
In force: 6 hr
Issued by: the Storm Prediction Center

All 67 counties

Alexander County, IL, Clinton County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Marion County, IL, Massac County, IL, Monroe County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Saint Clair County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Gibson County, IN, Pike County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Fulton County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Muhlenberg County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Perry County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO

The radar

The Paducah radar (KPAH), 101 km from the middle of the area, began a volume at 07:09 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.

Warnings issued inside it

13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Mar 13, 1:16 AM CST	Tornado Warning	PAH	Carter	53 min
Mar 13, 2:00 AM CST	Tornado Warning	PAH	Wayne	60 min
Mar 13, 2:38 AM CST	Severe Thunderstorm Warning	LSX	Madison	37 min
Mar 13, 2:47 AM CST	Tornado Warning	LSX	Madison	25 min
Mar 13, 2:48 AM CST	Tornado Warning	PAH	Bollinger	42 min
Mar 13, 3:17 AM CST	Severe Thunderstorm Warning	PAH	Cape Girardeau, Perry	18 min
Mar 13, 3:53 AM CST	Tornado Warning	LSX	Sainte Genevieve	26 min
Mar 13, 4:01 AM CST	Severe Thunderstorm Warning	LSX	Monroe, Saint Clair	33 min
Mar 13, 4:04 AM CST	Tornado Warning	LSX	Randolph	35 min
Mar 13, 4:27 AM CST	Severe Thunderstorm Warning	LSX	Washington	48 min
Mar 13, 5:24 AM CST	Severe Thunderstorm Warning	PAH	Jefferson, Wayne	39 min
Mar 13, 6:03 AM CST	Flash Flood Warning	PAH	Jefferson, Wayne	3 hr
Mar 13, 6:05 AM CST	Severe Thunderstorm Warning	PAH	Jackson, Williamson	40 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 7.1 hours before the alert went out and 279 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: 730 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 565 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 286 m²/s²
0-3 km storm-relative helicity: 322 m²/s²
Significant tornado parameter: 1.5
Supercell composite: 5.6

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 12, 6:28 PM CST	Mesoscale Discussion	SPC	Adams, Bond, Brown, Calhoun, Cass, Christian and 17 more	92 min
Mar 12, 7:15 PM CST	Mesoscale Discussion	SPC	Boone, Bureau, Carroll, DeKalb, DuPage, Grundy and 24 more	90 min
Mar 12, 7:28 PM CST	Severe Thunderstorm Watch	SPC	Carroll, Jo Daviess, Rock Island, Stephenson, Whiteside	7 hr
Mar 12, 8:00 PM CST	Mesoscale Discussion	SPC	Adams, Bond, Brown, Calhoun, Cass, Champaign and 47 more	90 min
Mar 12, 8:42 PM CST	Tornado Watch	SPC	Adams, Bond, Boone, Brown, Bureau, Calhoun and 58 more	7 hr
Mar 12, 11:30 PM CST	Mesoscale Discussion	SPC	Adams, Bond, Brown, Calhoun, Cass, Champaign and 41 more	2 hr
Mar 12, 11:52 PM CST	Mesoscale Discussion	SPC	Carroll	83 min
Mar 13, 12:35 AM CST	Mesoscale Discussion	SPC	Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 11 more	85 min
Mar 13, 3:19 AM CST	Mesoscale Discussion	SPC	Champaign, Clark, Clay, Coles, Crawford, Cumberland and 9 more	86 min
Mar 13, 3:52 AM CST	Tornado Watch	SPC	Bond, Champaign, Clark, Clay, Coles, Crawford and 19 more	7 hr
Mar 13, 6:08 AM CST	Mesoscale Discussion	SPC	Alexander, Edwards, Gallatin, Hamilton, Hardin, Johnson and 7 more	97 min
Mar 12, 10:39 PM CST	Mesoscale Discussion	SPC	Allen, Carroll, Cass, Clinton, DeKalb, Elkhart and 18 more	96 min
Mar 12, 11:23 PM CST	Tornado Watch	SPC	Allen, Cass, DeKalb, Elkhart, Fulton, Huntington and 13 more	7 hr
Mar 13, 6:56 AM CST	Severe Thunderstorm Watch	SPC	Clark, Crawford, Dubois, Floyd, Gibson, Harrison and 9 more	4 hr
Mar 13, 9:39 AM CST	Mesoscale Discussion	SPC	Adams, Allen, Blackford, Boone, Carroll, Cass and 28 more	66 min
Mar 13, 9:44 AM CST	Tornado Watch	SPC	Adams, Allen, DeKalb, Elkhart, Huntington, Kosciusko and 7 more	5 hr
Mar 13, 10:22 AM CST	Severe Thunderstorm Watch	SPC	Clark, Dearborn, Floyd, Harrison, Jefferson, Ohio and 3 more	10 hr
Mar 13, 2:13 PM CST	Mesoscale Discussion	SPC	Clark, Dearborn, Jefferson, Ohio, Ripley, Switzerland	92 min
Mar 12, 9:13 PM CST	Mesoscale Discussion	SPC	Barry, Howell, McDonald, Newton, Ozark, Stone and 1 more	62 min
Mar 13, 2:44 AM CST	Mesoscale Discussion	SPC	Dunklin	91 min
Mar 13, 3:13 AM CST	Tornado Watch	SPC	Dunklin, Pemiscot	7 hr
Mar 13, 9:02 AM CST	Mesoscale Discussion	SPC	Dunklin, Pemiscot	58 min

Nearby

Tornado Watches in Illinois, 2006 Tornado Watches in Kentucky, 2006 Tornado Watches in Missouri, 2006 Every tornado watch 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.