Alert archive / Kentucky / Mesoscale Discussions in 2009
Mesoscale Discussion 431
The Storm Prediction Center issued this mesoscale discussion at Apr 10, 2009, 1:26 PM CDT for 5 counties in Illinois; 13 counties in Indiana; 93 counties in Kentucky. It was in force for 64 min.
The area
The outline as issued.
The facts
- Issued
- Apr 10, 2009, 1:26 PM CDT (18:26 UTC)
- Expired
- Apr 10, 2009, 2:30 PM CDT
- In force
- 64 min
- Issued by
- the Storm Prediction Center
All 111 counties
Gallatin County, IL, Hardin County, IL, Pope County, IL, Saline County, IL, White County, IL, Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Orange County, IN, Perry County, IN, Posey County, IN, Scott County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Bell County, KY, Bourbon County, KY, Boyle County, KY, Breathitt County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Crittenden County, KY, Cumberland County, KY, Daviess County, KY, Edmonson County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Floyd County, KY, Franklin County, KY, Garrard County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Harlan County, KY, Harrison County, KY, Hart County, KY, Henderson County, KY, Henry County, KY, Hopkins County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Larue County, KY, Laurel County, KY, Lawrence County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Lincoln County, KY, Logan County, KY, Madison County, KY, Magoffin County, KY, Marion County, KY, McCreary County, KY, McLean County, KY, Meade County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Montgomery County, KY, Morgan County, KY, Muhlenberg County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Owen County, KY, Owsley County, KY, Perry County, KY, Powell County, KY, Pulaski County, KY, Robertson County, KY, Rockcastle County, KY, Rowan County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Todd County, KY, Trimble County, KY, Union County, KY, Warren County, KY, Washington County, KY, Wayne County, KY, Webster County, KY, Whitley County, KY, Wolfe County, KY, Woodford County, KY
The radar
The Louisville radar (KLVX), 96 km from the middle of the area, began a volume at 18:27 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, 6.4 hours before the alert went out and 196 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1414 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- -50 m²/s²
- 0-3 km storm-relative helicity
- -4 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Apr 9, 10:52 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more | 4 hr |
| Apr 10, 12:50 AM CDT | Mesoscale Discussion | SPC | Alexander, Clay, Edwards, Franklin, Gallatin, Hamilton and 19 more | 85 min |
| Apr 10, 8:53 AM CDT | Tornado Watch | SPC | Franklin, Gallatin, Hamilton, Hardin, Johnson, Massac and 4 more | 7 hr |
| Apr 10, 1:22 AM CDT | Severe Thunderstorm Watch | SPC | Clark, Crawford, Floyd, Harrison, Perry, Posey and 3 more | 4 hr |
| Apr 10, 3:33 AM CDT | Mesoscale Discussion | SPC | Crawford, Harrison, Perry | 57 min |
| Apr 10, 3:06 PM CDT | Mesoscale Discussion | SPC | Crawford, Floyd, Harrison, Perry | 54 min |
| Apr 10, 8:22 AM CDT | Mesoscale Discussion | SPC | Calloway, Marshall, Todd, Trigg | 83 min |
| Apr 10, 10:30 AM CDT | Mesoscale Discussion | SPC | Anderson, Bourbon, Boyle, Breckinridge, Bullitt, Clark and 14 more | 60 min |
| Apr 10, 11:14 AM CDT | Mesoscale Discussion | SPC | Allen, Calloway, Christian, Logan, Lyon, Marshall and 4 more | 76 min |
| Apr 10, 1:51 PM CDT | Tornado Watch | SPC | Bath, Bell, Breathitt, Clay, Elliott, Estill and 27 more | 6 hr |
| Apr 10, 2:56 PM CDT | Mesoscale Discussion | SPC | Breathitt, Clark, Elliott, Estill, Floyd, Jackson and 12 more | 64 min |
| Apr 10, 3:42 PM CDT | Mesoscale Discussion | SPC | Breathitt, Clay, Elliott, Floyd, Harlan, Johnson and 14 more | 63 min |
| Apr 10, 6:53 PM CDT | Mesoscale Discussion | SPC | Harlan, Letcher | 67 min |
Nearby
Mesoscale Discussions in Kentucky, 2009Mesoscale Discussions in Indiana, 2009Mesoscale Discussions in Illinois, 2009Every mesoscale discussion in 2009
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.