Alert archive / Kentucky / Mesoscale Discussions in 2004

Mesoscale Discussion 1229

June 12, 200411 counties in Illinois; 18 counties in Kentucky; Cape Girardeau County, Mississippi County, Scott County, Missouri

The Storm Prediction Center issued this mesoscale discussion at Jun 12, 2004, 6:08 PM CDT for 11 counties in Illinois; 18 counties in Kentucky; Cape Girardeau County, Mississippi County, Scott County, Missouri. It was in force for 37 min.

The area

The outline as issued.

The facts

Issued: Jun 12, 2004, 6:08 PM CDT (23:08 UTC)
Expired: Jun 12, 2004, 6:45 PM CDT
In force: 37 min
Issued by: the Storm Prediction Center

All 32 counties

Alexander County, IL, Gallatin County, IL, Hardin County, IL, Jackson County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Williamson County, IL, Ballard County, KY, Caldwell County, KY, Carlisle County, KY, Christian County, KY, Crittenden 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, Todd County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Cape Girardeau County, MO, Mississippi County, MO, Scott County, MO

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 11.1 hours before the alert went out and 181 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: 1896 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 911 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 73 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Jun 11, 9:35 PM CDT	Severe Thunderstorm Watch	SPC	Henderson, Mercer	4 hr
Jun 11, 10:04 PM CDT	Mesoscale Discussion	SPC	Boone, Bureau, Carroll, DeKalb, Grundy, Jo Daviess and 10 more	56 min
Jun 11, 11:00 PM CDT	Tornado Watch	SPC	Bureau, Carroll, DeKalb, DuPage, Ford, Grundy and 15 more	5 hr
Jun 12, 1:48 AM CDT	Mesoscale Discussion	SPC	Boone, Bureau, Carroll, Cook, DeKalb, DuPage and 19 more	87 min
Jun 12, 3:08 AM CDT	Mesoscale Discussion	SPC	Cook, DeKalb, DuPage, Grundy, Iroquois, Kane and 7 more	97 min
Jun 12, 10:48 AM CDT	Mesoscale Discussion	SPC	Gallatin, Hardin, Massac, Pope	2 hr
Jun 12, 3:45 PM CDT	Severe Thunderstorm Watch	SPC	Henderson, Mercer, Rock Island, Warren	5 hr
Jun 12, 3:51 PM CDT	Mesoscale Discussion	SPC	Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 11 more	84 min
Jun 12, 4:15 PM CDT	Severe Thunderstorm Watch	SPC	Alexander, Gallatin, Hardin, Jackson, Johnson, Massac and 5 more	5 hr
Jun 12, 11:10 AM CDT	Severe Thunderstorm Watch	SPC	Adair, Allen, Anderson, Barren, Bath, Bell and 77 more	5 hr
Jun 12, 1:35 PM CDT	Severe Thunderstorm Watch	SPC	Fulton	5 hr
Jun 12, 1:54 PM CDT	Mesoscale Discussion	SPC	Adair, Allen, Anderson, Barren, Bath, Bell and 68 more	2 hr
Jun 12, 3:14 PM CDT	Mesoscale Discussion	SPC	Fulton	2 hr
Jun 12, 3:30 PM CDT	Mesoscale Discussion	SPC	Adair, Allen, Barren, Bath, Bell, Bourbon and 48 more	90 min
Jun 11, 11:34 PM CDT	Mesoscale Discussion	SPC	Buchanan, Caldwell, Carroll, Clay, Clinton, Daviess and 5 more	116 min
Jun 12, 2:18 AM CDT	Mesoscale Discussion	SPC	Barton, Bates, Benton, Camden, Cass, Cedar and 18 more	87 min
Jun 12, 10:30 AM CDT	Mesoscale Discussion	SPC	Atchison, Barton, Bates, Benton, Camden, Cass and 29 more	2 hr
Jun 12, 11:38 AM CDT	Mesoscale Discussion	SPC	Barry, Butler, Carter, Dunklin, Howell, McDonald and 9 more	2 hr
Jun 12, 11:45 AM CDT	Tornado Watch	SPC	Andrew, Atchison, Buchanan, Gentry, Holt, Nodaway and 1 more	7 hr
Jun 12, 12:43 PM CDT	Mesoscale Discussion	SPC	Atchison	92 min
Jun 12, 3:10 PM CDT	Severe Thunderstorm Watch	SPC	Barry, Barton, Christian, Dade, Douglas, Greene and 9 more	6 hr
Jun 12, 4:36 PM CDT	Mesoscale Discussion	SPC	Barry, Barton, Bates, Caldwell, Carroll, Cass and 24 more	84 min
Jun 12, 5:00 PM CDT	Mesoscale Discussion	SPC	Andrew, Atchison, Buchanan, Gentry, Holt, Nodaway and 1 more	90 min
Jun 12, 6:15 PM CDT	Tornado Watch	SPC	Adair, Andrew, Atchison, Bates, Benton, Buchanan and 31 more	5 hr

Nearby

Mesoscale Discussions in Kentucky, 2004 Mesoscale Discussions in Illinois, 2004 Mesoscale Discussions in Missouri, 2004 Every mesoscale discussion in 2004

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.