Alert archive / Kentucky / Mesoscale Discussions in 2004
Mesoscale Discussion 991
The Storm Prediction Center issued this mesoscale discussion at May 30, 2004, 12:50 PM EDT for 4 states. It was in force for 115 min.
The area
The outline as issued.
The facts
- Issued
- May 30, 2004, 12:50 PM EDT (16:50 UTC)
- Expired
- May 30, 2004, 2:45 PM EDT
- In force
- 115 min
- Issued by
- the Storm Prediction Center
All 87 counties
Anderson County, KY, Bath County, KY, Bell County, KY, Bourbon County, KY, Boyle County, KY, Bracken County, KY, Breathitt County, KY, Carter County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Floyd County, KY, Franklin County, KY, Garrard County, KY, Grant County, KY, Harlan County, KY, Harrison County, KY, Jackson County, KY, Jessamine County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Laurel County, KY, Lawrence County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Lincoln County, KY, Madison County, KY, Magoffin County, KY, Martin County, KY, Mason County, KY, McCreary County, KY, Menifee County, KY, Mercer County, KY, Montgomery County, KY, Morgan County, KY, Nicholas County, KY, Owen County, KY, Owsley County, KY, Pendleton County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Robertson County, KY, Rockcastle County, KY, Rowan County, KY, Russell County, KY, Scott County, KY, Washington County, KY, Wayne County, KY, Whitley County, KY, Wolfe County, KY, Woodford County, KY, Anderson County, TN, Campbell County, TN, Claiborne County, TN, Cumberland County, TN, Fentress County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hancock County, TN, Hawkins County, TN, Jefferson County, TN, Knox County, TN, Loudon County, TN, Morgan County, TN, Pickett County, TN, Roane County, TN, Scott County, TN, Union County, TN, Washington County, TN, Buchanan County, VA, City of Norton, VA, Dickenson County, VA, Lee County, VA, Scott County, VA, Wise County, VA, Mingo County, WV, Wayne County, WV
The radar
The Jackson,KY radar (KJKL), 86 km from the middle of the area, began a volume at 16:49 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 12:00Z, 4.8 hours before the alert went out and 249 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.
- Mixed-layer CAPE
- 1413 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 702 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 210 m²/s²
- 0-3 km storm-relative helicity
- 176 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.2
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 11:04 AM EDT | Mesoscale Discussion | SPC | Ballard, Butler, Caldwell, Calloway, Carlisle, Christian and 18 more | 2 hr |
| May 30, 12:50 PM EDT | Tornado Watch | SPC | Allen, Breckinridge, Bullitt, Butler, Caldwell, Carlisle and 29 more | 7 hr |
| May 30, 2:05 PM EDT | Tornado Watch | SPC | Ballard, Fulton | 6 hr |
| May 30, 2:40 PM EDT | Tornado Watch | SPC | Adair, Anderson, Barren, Bath, Bell, Bourbon and 67 more | 7 hr |
| May 30, 4:05 PM EDT | Mesoscale Discussion | SPC | Adair, Anderson, Bath, Boone, Bourbon, Boyd and 77 more | 115 min |
| May 30, 4:20 PM EDT | Tornado Watch | SPC | Calloway, Fulton | 8 hr |
| May 30, 4:55 PM EDT | Tornado Watch | SPC | Boone, Bracken, Campbell, Gallatin, Grant, Kenton and 1 more | 5 hr |
| May 30, 7:40 PM EDT | Tornado Watch | SPC | Ballard, Carlisle, Hickman, McCracken | 6 hr |
| May 30, 7:55 PM EDT | Tornado Watch | SPC | Allen, Breckinridge, Bullitt, Butler, Caldwell, Calloway and 27 more | 8 hr |
| May 30, 3:44 PM EDT | Mesoscale Discussion | SPC | Lauderdale | 2 hr |
| May 30, 5:35 PM EDT | Tornado Watch | SPC | Carter, Cocke, Greene, Hawkins, Johnson, Sullivan and 2 more | 5 hr |
| May 30, 6:10 PM EDT | Mesoscale Discussion | SPC | Tipton | 95 min |
Nearby
Mesoscale Discussions in Kentucky, 2004Mesoscale Discussions in Tennessee, 2004Mesoscale Discussions in Virginia, 2004Every 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; radar from the NEXRAD Level II archive.