Alert archive / Kentucky / Mesoscale Discussions in 2014
Mesoscale Discussion 258
The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2014, 9:22 AM CDT for 4 states. It was in force for 83 min.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 2014, 9:22 AM CDT (14:22 UTC)
- Expired
- Apr 3, 2014, 10:45 AM CDT
- In force
- 83 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 78 counties
Hardin County, IL, Massac County, IL, Pope County, IL, Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Orange County, IN, Perry County, IN, Scott County, IN, Spencer County, IN, Warrick County, IN, Washington County, IN, Allen County, KY, Ballard County, KY, Barren County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Fulton County, KY, Graves County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Jefferson County, KY, Larue County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Metcalfe County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Oldham County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Warren County, KY, Webster County, KY, Benton County, TN, Carroll County, TN, Cheatham County, TN, Davidson County, TN, Dickson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Macon County, TN, Montgomery County, TN, Obion County, TN, Robertson County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Weakley County, TN, Williamson County, TN, Wilson County, TN
The radar
The Ft Campbell radar (KHPX), 58 km from the middle of the area, began a volume at 14:26 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, 2.4 hours before the alert went out and 131 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
- 118 J/kg
- Mixed-layer CIN
- -196 J/kg
- Mixed-layer LCL
- 711 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 269 m²/s²
- 0-3 km storm-relative helicity
- 253 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.6
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 3, 1:05 AM CDT | Mesoscale Discussion | SPC | Adams, Hancock, Henderson, McDonough, Mercer, Rock Island and 2 more | 55 min |
| Apr 3, 2:49 AM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Bureau, Calhoun, Cass and 44 more | 116 min |
| Apr 3, 6:24 AM CDT | Mesoscale Discussion | SPC | Bond, Clay, Clinton, Effingham, Fayette, Franklin and 12 more | 96 min |
| Apr 3, 12:28 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more | 62 min |
| Apr 3, 12:46 PM CDT | Tornado Watch | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more | 4 hr |
| Apr 3, 3:17 PM CDT | Mesoscale Discussion | SPC | Adams, Pike | 58 min |
| Apr 3, 4:58 PM CDT | Tornado Watch | SPC | Monroe, Randolph, Saint Clair | 7 hr |
| Apr 3, 5:16 PM CDT | Mesoscale Discussion | SPC | Clay, Harlan, Knott, Knox, Laurel, Leslie and 6 more | 89 min |
Nearby
Mesoscale Discussions in Kentucky, 2014Mesoscale Discussions in Tennessee, 2014Mesoscale Discussions in Indiana, 2014Every mesoscale discussion in 2014
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.