Alert archive / Kentucky / Mesoscale Discussions in 2023
Mesoscale Discussion 46
The Storm Prediction Center issued this mesoscale discussion at Jan 12, 2023, 5:32 AM EST for 4 counties in Indiana; 42 counties in Kentucky. It was in force for 118 min.
The area
The outline as issued.
The facts
- Issued
- Jan 12, 2023, 5:32 AM EST (10:32 UTC)
- Expired
- Jan 12, 2023, 7:30 AM EST
- In force
- 118 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 15
All 46 counties
Floyd County, IN, Harrison County, IN, Perry County, IN, Spencer County, IN, Adair County, KY, Anderson County, KY, Barren County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Casey County, KY, Christian County, KY, Daviess County, KY, Edmonson County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Hopkins County, KY, Jefferson County, KY, Larue County, KY, Lincoln County, KY, Logan County, KY, Lyon County, KY, Marion County, KY, Marshall County, KY, McLean County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Todd County, KY, Trigg County, KY, Warren County, KY, Washington County, KY, Woodford County, KY
The radar
The Louisville radar (KLVX), 55 km from the middle of the area, began a volume at 10:31 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 00:00Z, 10.5 hours before the alert went out and 160 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
- 840 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 166 m²/s²
- 0-3 km storm-relative helicity
- 202 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Jan 12, 6:00 AM EST | Severe Thunderstorm Watch | SPC | Clark, Crawford, Floyd, Harrison, Perry | 7 hr |
| Jan 12, 1:41 AM EST | Mesoscale Discussion | SPC | Ballard, Calloway, Carlisle, Fulton, Graves, Hickman and 4 more | 4 hr |
| Jan 12, 2:57 AM EST | Severe Thunderstorm Watch | SPC | Ballard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 16 more | 5 hr |
| Jan 12, 9:28 AM EST | Mesoscale Discussion | SPC | Bath, Bourbon, Boyd, Bracken, Breathitt, Carter and 30 more | 62 min |
| Jan 12, 9:41 AM EST | Severe Thunderstorm Watch | SPC | Bath, Boyd, Bracken, Breathitt, Carter, Clay and 26 more | 4 hr |
| Jan 12, 12:44 PM EST | Mesoscale Discussion | SPC | Bell, Breathitt, Clay, Clinton, Cumberland, Jackson and 15 more | 2 hr |
Nearby
Mesoscale Discussions in Kentucky, 2023Mesoscale Discussions in Indiana, 2023Every mesoscale discussion in 2023
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.