Alert archive / Kentucky / Mesoscale Discussions in 2020
Mesoscale Discussion 137
The Storm Prediction Center issued this mesoscale discussion at Mar 2, 2020, 9:00 PM CST for 10 counties in Illinois; 21 counties in Kentucky; 8 counties in Missouri. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Mar 2, 2020, 9:00 PM CST (03:00 UTC)
- Expired
- Mar 2, 2020, 10:30 PM CST
- In force
- 90 min
- Issued by
- the Storm Prediction Center
All 39 counties
Alexander County, IL, Gallatin County, IL, Hardin County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Williamson County, IL, Ballard County, KY, Butler County, KY, Caldwell County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Muhlenberg County, KY, Ohio County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Mississippi County, MO, New Madrid County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO
The radar
The Paducah radar (KPAH), 21 km from the middle of the area, began a volume at 03:04 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
Nashville Metro, TN (KBNA), launched 00:00Z, 3.0 hours before the alert went out and 239 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
- 346 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 559 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 183 m²/s²
- 0-3 km storm-relative helicity
- 230 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.5
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 |
|---|---|---|---|---|
| Mar 2, 6:39 PM CST | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hardin, Jackson, Johnson and 6 more | 96 min |
| Mar 2, 11:10 PM CST | Mesoscale Discussion | SPC | Allen, Caldwell, Calloway, Carlisle, Christian, Fulton and 8 more | 2 hr |
| Mar 3, 1:02 AM CST | Mesoscale Discussion | SPC | Clinton, Cumberland, Monroe, Russell, Wayne | 118 min |
| Mar 3, 12:59 AM CST | Severe Thunderstorm Watch | SPC | Dunklin, Pemiscot | 4 hr |
Nearby
Mesoscale Discussions in Kentucky, 2020Mesoscale Discussions in Illinois, 2020Mesoscale Discussions in Missouri, 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.