Alert archive / Kentucky / Mesoscale Discussions in 2022

Mesoscale Discussion 481

April 13, 202215 counties in Kentucky

The Storm Prediction Center issued this mesoscale discussion at Apr 13, 2022, 3:22 PM CDT for 15 counties in Kentucky. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued: Apr 13, 2022, 3:22 PM CDT (20:22 UTC)
Expired: Apr 13, 2022, 4:15 PM CDT
In force: 53 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch likely
Chance of a watch: 95%

Counties Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Trigg County, KY, Webster County, KY

The radar

The Paducah radar (KPAH), 40 km from the middle of the area, began a volume at 20:21 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.

Tornado Watch 124Apr 13, 3:25 PM CDT

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 8.4 hours before the alert went out and 182 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1286 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 242 m²/s²
0-3 km storm-relative helicity: 313 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 13, 12:32 PM CDT	Mesoscale Discussion	SPC	Ballard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 18 more	118 min
Apr 13, 3:35 PM CDT	Tornado Watch	SPC	Ballard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 13 more	3 hr
Apr 13, 4:48 PM CDT	Mesoscale Discussion	SPC	Allen, Barren, Butler, Caldwell, Calloway, Carlisle and 22 more	117 min
Apr 13, 5:01 PM CDT	Tornado Watch	SPC	Adair, Allen, Barren, Breckinridge, Bullitt, Butler and 23 more	4 hr
Apr 13, 5:51 PM CDT	Mesoscale Discussion	SPC	Carroll, Gallatin, Oldham, Owen, Trimble	114 min

Nearby

Mesoscale Discussions in Kentucky, 2022 Every mesoscale discussion in 2022

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.