Alert archive / Kentucky / Mesoscale Discussions in 2011
Mesoscale Discussion 632
The Storm Prediction Center issued this mesoscale discussion at Apr 27, 2011, 5:38 PM EDT for 5 states. It was in force for 37 min.
The area
The outline as issued.
The facts
- Issued
- Apr 27, 2011, 5:38 PM EDT (21:38 UTC)
- Expired
- Apr 27, 2011, 6:15 PM EDT
- In force
- 37 min
- Issued by
- the Storm Prediction Center
All 127 counties
Clark County, IN, Crawford County, IN, Floyd County, IN, Harrison County, IN, Jefferson County, IN, Ohio County, IN, Perry County, IN, Scott County, IN, Switzerland County, IN, Washington County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Bell County, KY, Boone County, KY, Bourbon County, KY, Boyd County, KY, Boyle County, KY, Bracken County, KY, Breathitt County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Campbell County, KY, Carroll County, KY, Carter County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Floyd County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Grayson County, KY, Green County, KY, Greenup County, KY, Hardin County, KY, Harlan County, KY, Harrison County, KY, Hart County, KY, Henry County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Johnson County, KY, Kenton 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, Lewis County, KY, Lincoln County, KY, Logan County, KY, Madison County, KY, Magoffin County, KY, Marion County, KY, Martin County, KY, Mason County, KY, McCreary County, KY, Meade County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Montgomery County, KY, Morgan County, KY, Nelson County, KY, Nicholas County, KY, Oldham 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, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Warren County, KY, Washington County, KY, Wayne County, KY, Whitley County, KY, Wolfe County, KY, Woodford County, KY, Adams County, OH, Brown County, OH, Gallia County, OH, Lawrence County, OH, Scioto County, OH, Buchanan County, VA, City of Norton, VA, Dickenson County, VA, Lee County, VA, Russell County, VA, Scott County, VA, Wise County, VA, Boone County, WV, Cabell County, WV, Jackson County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, Mingo County, WV, Putnam County, WV, Wayne County, WV
The radar
The Jackson,KY radar (KJKL), 92 km from the middle of the area, began a volume at 21:41 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
Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.6 hours before the alert went out and 199 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
- 279 J/kg
- Mixed-layer CIN
- -56 J/kg
- Mixed-layer LCL
- 846 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 470 m²/s²
- 0-3 km storm-relative helicity
- 503 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.9
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 26, 8:33 PM EDT | Mesoscale Discussion | SPC | Adams, Allen, Blackford, Boone, Carroll, Cass and 35 more | 57 min |
| Apr 26, 9:35 PM EDT | Mesoscale Discussion | SPC | Bartholomew, Boone, Brown, Clark, Clay, Crawford and 44 more | 55 min |
| Apr 26, 10:13 PM EDT | Mesoscale Discussion | SPC | Posey, Vanderburgh, Warrick | 62 min |
| Apr 26, 10:58 PM EDT | Tornado Watch | SPC | Clark, Crawford, Dubois, Floyd, Harrison, Jefferson and 4 more | 7 hr |
| Apr 27, 4:06 PM EDT | Mesoscale Discussion | SPC | Crawford, Daviess, Dubois, Gibson, Knox, Lawrence and 8 more | 54 min |
| Apr 27, 4:29 PM EDT | Tornado Watch | SPC | Gibson, Pike, Posey, Spencer, Vanderburgh, Warrick | 5 hr |
| Apr 27, 5:44 PM EDT | Tornado Watch | SPC | Clark, Crawford, Dubois, Floyd, Harrison, Jefferson and 5 more | 7 hr |
| Apr 27, 6:27 PM EDT | Mesoscale Discussion | SPC | Bartholomew, Blackford, Boone, Brown, Clark, Clay and 53 more | 63 min |
| Apr 27, 7:22 PM EDT | Tornado Watch | SPC | Adams, Bartholomew, Blackford, Boone, Brown, Carroll and 49 more | 8 hr |
| Apr 27, 5:33 AM EDT | Mesoscale Discussion | SPC | Adair, Barren, Boyle, Casey, Clinton, Cumberland and 12 more | 57 min |
| Apr 27, 6:07 AM EDT | Tornado Watch | SPC | Adair, Allen, Anderson, Barren, Bourbon, Boyle and 28 more | 5 hr |
| Apr 27, 8:34 AM EDT | Tornado Watch | SPC | Bath, Bell, Breathitt, Clay, Elliott, Estill and 21 more | 4 hr |
| Apr 27, 9:39 AM EDT | Mesoscale Discussion | SPC | Boyd, Carter, Greenup, Lewis | 66 min |
| Apr 27, 1:42 PM EDT | Severe Thunderstorm Watch | SPC | Ballard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 16 more | 5 hr |
| Apr 27, 3:22 PM EDT | Mesoscale Discussion | SPC | Bell, Breathitt, Clay, Floyd, Harlan, Jackson and 11 more | 83 min |
| Apr 27, 1:24 PM EDT | Mesoscale Discussion | SPC | Ashtabula, Belmont, Carroll, Columbiana, Guernsey, Harrison and 9 more | 96 min |
| Apr 27, 12:51 PM EDT | Mesoscale Discussion | SPC | Albemarle, Amelia, Amherst, Appomattox, Bedford, Brunswick and 49 more | 84 min |
| Apr 27, 1:23 PM EDT | Tornado Watch | SPC | Albemarle, Alleghany, Amelia, Amherst, Appomattox, Arlington and 65 more | 5 hr |
| Apr 27, 4:39 PM EDT | Mesoscale Discussion | SPC | Albemarle, Arlington, Augusta, Clarke, Culpeper, Fairfax and 31 more | 66 min |
| Apr 27, 6:00 PM EDT | Mesoscale Discussion | SPC | Albemarle, Amelia, Appomattox, Arlington, Brunswick, Buckingham and 54 more | 60 min |
| Apr 27, 6:15 PM EDT | Tornado Watch | SPC | Albemarle, Alleghany, Amelia, Amherst, Appomattox, Arlington and 89 more | 6 hr |
| Apr 27, 7:55 PM EDT | Mesoscale Discussion | SPC | Albemarle, Amelia, Amherst, Appomattox, Arlington, Bedford and 54 more | 65 min |
| Apr 27, 3:10 PM EDT | Tornado Watch | SPC | Marion, Monongalia, Preston, Tucker | 7 hr |
Nearby
Mesoscale Discussions in Kentucky, 2011Mesoscale Discussions in Indiana, 2011Mesoscale Discussions in West Virginia, 2011Every mesoscale discussion in 2011
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.