Alert archive / Kentucky / Mesoscale Discussions in 2020
Mesoscale Discussion 172
The Storm Prediction Center issued this mesoscale discussion at Mar 12, 2020, 3:20 PM CDT for Hardin County, Pope County, Illinois; 8 counties in Kentucky. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- Mar 12, 2020, 3:20 PM CDT (20:20 UTC)
- Expired
- Mar 12, 2020, 4:45 PM CDT
- In force
- 85 min
- Issued by
- the Storm Prediction Center
Counties Hardin County, IL, Pope County, IL, Caldwell County, KY, Christian County, KY, Crittenden County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Union County, KY, Webster County, KY
The radar
The Paducah radar (KPAH), 80 km from the middle of the area, began a volume at 20:22 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, 8.3 hours before the alert went out and 180 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
- 662 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 156 m²/s²
- 0-3 km storm-relative helicity
- 182 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 |
|---|---|---|---|---|
| Mar 12, 9:21 AM CDT | Mesoscale Discussion | SPC | Madison, Monroe, Saint Clair | 114 min |
| Mar 12, 11:13 AM CDT | Mesoscale Discussion | SPC | Alexander, Gallatin, Hardin, Johnson, Massac, Pope and 4 more | 2 hr |
| Mar 12, 11:44 AM CDT | Tornado Watch | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more | 6 hr |
| Mar 12, 1:28 PM CDT | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 12 more | 2 hr |
| Mar 12, 2:31 PM CDT | Mesoscale Discussion | SPC | Alexander, Pulaski | 89 min |
| Mar 12, 3:44 PM CDT | Tornado Watch | SPC | Alexander, Jackson, Johnson, Massac, Pulaski, Union | 7 hr |
| Mar 12, 5:09 PM CDT | Tornado Watch | SPC | Adair, Allen, Barren, Boyle, Breckinridge, Bullitt and 30 more | 5 hr |
| Mar 12, 6:20 PM CDT | Mesoscale Discussion | SPC | Adair, Barren, Clinton, Cumberland, Edmonson, Green and 6 more | 85 min |
Nearby
Mesoscale Discussions in Kentucky, 2020Mesoscale Discussions in Illinois, 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.