Alert archive / Kentucky / Mesoscale Discussions in 2020
Mesoscale Discussion 633
The Storm Prediction Center issued this mesoscale discussion at May 18, 2020, 7:20 PM EDT for 34 counties in Kentucky; Adams County, Brown County, Scioto County, Ohio. It was in force for 115 min.
The area
The outline as issued.
The facts
- Issued
- May 18, 2020, 7:20 PM EDT (23:20 UTC)
- Expired
- May 18, 2020, 9:15 PM EDT
- In force
- 115 min
- Issued by
- the Storm Prediction Center
- Concerning
- Tornado watch 193
All 37 counties
Bath County, KY, Bell County, KY, Bourbon County, KY, Breathitt County, KY, Carter County, KY, Clark County, KY, Clay County, KY, Elliott County, KY, Estill County, KY, Fleming County, KY, Greenup County, KY, Jackson County, KY, Knox County, KY, Laurel County, KY, Lee County, KY, Leslie County, KY, Lewis County, KY, Madison County, KY, Magoffin County, KY, Mason County, KY, McCreary County, KY, Menifee County, KY, Montgomery County, KY, Morgan County, KY, Nicholas County, KY, Owsley County, KY, Perry County, KY, Powell County, KY, Pulaski County, KY, Robertson County, KY, Rockcastle County, KY, Rowan County, KY, Whitley County, KY, Wolfe County, KY, Adams County, OH, Brown County, OH, Scioto County, OH
The radar
The Jackson,KY radar (KJKL), 36 km from the middle of the area, began a volume at 23:23 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
Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.3 hours before the alert went out and 186 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
- 230 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 1122 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 200 m²/s²
- 0-3 km storm-relative helicity
- 171 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
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 |
|---|---|---|---|---|
| May 18, 1:46 PM EDT | Mesoscale Discussion | SPC | Anderson, Bath, Bourbon, Boyle, Bracken, Breathitt and 42 more | 119 min |
| May 18, 2:18 PM EDT | Tornado Watch | SPC | Adair, Bath, Bell, Bourbon, Boyle, Bracken and 48 more | 7 hr |
| May 18, 4:32 PM EDT | Mesoscale Discussion | SPC | Bath, Bourbon, Boyle, Bracken, Breathitt, Campbell and 41 more | 88 min |
Nearby
Mesoscale Discussions in Kentucky, 2020Mesoscale Discussions in Ohio, 2020Every mesoscale discussion in 2020
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.