Alert archive / Kentucky / Mesoscale Discussions in 2018
Mesoscale Discussion 124
The Storm Prediction Center issued this mesoscale discussion at Mar 16, 2018, 11:46 PM CDT for 4 states. It was in force for 59 min.
The area
The outline as issued.
The facts
- Issued
- Mar 16, 2018, 11:46 PM CDT (04:46 UTC)
- Expired
- Mar 17, 2018, 12:45 AM CDT
- In force
- 59 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 5%
All 28 counties
Alexander County, IL, Massac County, IL, Pulaski County, IL, Ballard County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, Muhlenberg County, KY, Simpson County, KY, Todd County, KY, Trigg County, KY, Mississippi County, MO, New Madrid County, MO, Scott County, MO, Montgomery County, TN, Obion County, TN, Stewart County, TN
The radar
The Ft Campbell radar (KHPX), 68 km from the middle of the area, began a volume at 04:46 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 nearest sounding before it
Little Rock, AR (KBYH), launched 00:00Z, 4.8 hours before the alert went out and 279 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
- 754 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 1172 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 194 m²/s²
- 0-3 km storm-relative helicity
- 307 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 9.1
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 3:59 AM CDT | Mesoscale Discussion | SPC | Cook, DeKalb, DuPage, Kane, Kankakee, Kendall and 1 more | 4 hr |
| Mar 17, 2:25 PM CDT | Mesoscale Discussion | SPC | Adair, Barren, Bell, Boyle, Breathitt, Casey and 41 more | 2 hr |
| Mar 17, 3:33 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Barren, Bell, Boyle, Breathitt, Casey and 45 more | 7 hr |
| Mar 17, 6:06 PM CDT | Mesoscale Discussion | SPC | Bell, Breathitt, Clay, Floyd, Harlan, Knott and 10 more | 114 min |
| Mar 17, 5:06 PM CDT | Mesoscale Discussion | SPC | Bledsoe, Bradley, Coffee, Franklin, Grundy, Hamilton and 7 more | 114 min |
Nearby
Mesoscale Discussions in Kentucky, 2018Mesoscale Discussions in Illinois, 2018Mesoscale Discussions in Missouri, 2018Every mesoscale discussion in 2018
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.