Alert archive / Kentucky / Mesoscale Discussions in 2022

Mesoscale Discussion 3

January 1, 20224 states

The Storm Prediction Center issued this mesoscale discussion at Jan 1, 2022, 2:07 AM CST for 4 states. It was in force for 113 min.

The area

The outline as issued.

The facts

Issued: Jan 1, 2022, 2:07 AM CST (08:07 UTC)
Expired: Jan 1, 2022, 4:00 AM CST
In force: 113 min
Issued by: the Storm Prediction Center
Concerning: Tornado watch 2

All 38 counties

Cleburne County, AR, Craighead County, AR, Cross County, AR, Greene County, AR, Independence County, AR, Jackson County, AR, Mississippi County, AR, Poinsett County, AR, White County, AR, Woodruff County, AR, Allen County, KY, Barren County, KY, Butler County, KY, Calloway County, KY, Christian County, KY, Cumberland County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Logan County, KY, Monroe County, KY, Simpson County, KY, Todd County, KY, Trigg County, KY, Warren County, KY, Dunklin County, MO, Pemiscot County, MO, Dyer County, TN, Gibson County, TN, Henry County, TN, Houston County, TN, Lake County, TN, Lauderdale County, TN, Montgomery County, TN, Obion County, TN, Robertson County, TN, Stewart County, TN, Weakley County, TN

The radar

The Memphis radar (KNQA), 68 km from the middle of the area, began a volume at 08:09 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, 8.1 hours before the alert went out and 291 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: 336 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 894 m above ground
0-6 km bulk shear: 79 kt
0-1 km storm-relative helicity: 223 m²/s²
0-3 km storm-relative helicity: 268 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.3

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
Dec 31, 9:08 PM CST	Mesoscale Discussion	SPC	Cleburne, Conway, Craighead, Cross, Faulkner, Garland and 24 more	3 hr
Dec 31, 10:35 PM CST	Severe Thunderstorm Watch	SPC	Clark, Cleburne, Conway, Faulkner, Garland, Hot Spring and 26 more	353 days
Dec 31, 11:57 PM CST	Tornado Watch	SPC	Clay, Craighead, Cross, Greene, Mississippi, Poinsett	7 hr
Jan 1, 11:37 AM CST	Mesoscale Discussion	SPC	Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 5 more	113 min
Jan 1, 1:30 PM CST	Tornado Watch	SPC	Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 9 more	9 hr
Dec 31, 9:31 PM CST	Mesoscale Discussion	SPC	Adair, Allen, Anderson, Barren, Bath, Bell and 67 more	2 hr
Jan 1, 10:29 AM CST	Mesoscale Discussion	SPC	Adair, Allen, Barren, Butler, Casey, Edmonson and 10 more	61 min
Jan 1, 10:50 AM CST	Tornado Watch	SPC	Adair, Allen, Barren, Boyle, Casey, Clinton and 14 more	7 hr
Jan 1, 12:38 PM CST	Mesoscale Discussion	SPC	Adair, Casey, Clay, Clinton, Cumberland, Estill and 17 more	97 min
Jan 1, 12:56 PM CST	Tornado Watch	SPC	Bell, Breathitt, Clay, Harlan, Jackson, Knott and 12 more	6 hr
Jan 1, 10:31 AM CST	Mesoscale Discussion	SPC	Andrew, Atchison, Buchanan, Daviess, DeKalb, Gentry and 9 more	4 hr
Jan 1, 1:57 PM CST	Mesoscale Discussion	SPC	Bedford, Giles, Hardin, Lawrence, Lincoln, Marshall and 2 more	93 min
Jan 1, 3:27 PM CST	Mesoscale Discussion	SPC	Anderson, Bledsoe, Campbell, Coffee, Cumberland, Franklin and 14 more	93 min
Jan 1, 5:53 PM CST	Mesoscale Discussion	SPC	Anderson, Bledsoe, Blount, Bradley, Cumberland, Franklin and 19 more	67 min

Nearby

Mesoscale Discussions in Kentucky, 2022 Mesoscale Discussions in Tennessee, 2022 Mesoscale Discussions in Arkansas, 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.