Alert archive / Tennessee / Mesoscale Discussions in 2022
Mesoscale Discussion 1985
The Storm Prediction Center issued this mesoscale discussion at Nov 29, 2022, 6:19 PM CST for 4 states. It was in force for 86 min.
The area
The outline as issued.
The facts
- Issued
- Nov 29, 2022, 6:19 PM CST (00:19 UTC)
- Expired
- Nov 29, 2022, 7:45 PM CST
- In force
- 86 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch possible
- Chance of a watch
- 40%
All 52 counties
Lauderdale County, AL, Ashley County, AR, Bradley County, AR, Chicot County, AR, Desha County, AR, Drew County, AR, Lincoln County, AR, Phillips County, AR, Union County, AR, Alcorn County, MS, Benton County, MS, Bolivar County, MS, Coahoma County, MS, DeSoto County, MS, Lafayette County, MS, Marshall County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Sunflower County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Union County, MS, Yalobusha County, MS, Benton County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Decatur County, TN, Dickson County, TN, Fayette County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Lawrence County, TN, Lewis County, TN, Madison County, TN, Maury County, TN, McNairy County, TN, Montgomery County, TN, Perry County, TN, Robertson County, TN, Shelby County, TN, Wayne County, TN
The radar
The Memphis radar (KNQA), 72 km from the middle of the area, began a volume at 00:23 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
Little Rock, AR (KLZK), launched 00:00Z, 0.3 hours before the alert went out and 54 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
- 593 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 534 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 141 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
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 |
|---|---|---|---|---|
| Nov 29, 8:11 PM CST | Mesoscale Discussion | SPC | Bibb, Choctaw, Fayette, Greene, Hale, Jefferson and 7 more | 64 min |
| Nov 29, 10:23 PM CST | Mesoscale Discussion | SPC | Autauga, Bibb, Butler, Chilton, Choctaw, Clarke and 13 more | 67 min |
| Nov 29, 10:52 PM CST | Tornado Watch | SPC | Autauga, Baldwin, Bibb, Butler, Chilton, Choctaw and 27 more | 7 hr |
| Nov 29, 11:33 PM CST | Mesoscale Discussion | SPC | Bibb, Choctaw, Fayette, Greene, Hale, Jefferson and 10 more | 87 min |
| Nov 30, 2:15 AM CST | Mesoscale Discussion | SPC | Autauga, Bibb, Butler, Chambers, Chilton, Choctaw and 20 more | 2 hr |
| Nov 30, 4:20 AM CST | Mesoscale Discussion | SPC | Baldwin, Butler, Coffee, Conecuh, Covington, Crenshaw and 8 more | 115 min |
| Nov 30, 4:34 AM CST | Tornado Watch | SPC | Baldwin, Coffee, Covington, Dale, Escambia, Geneva and 3 more | 6 hr |
| Nov 30, 7:16 AM CST | Mesoscale Discussion | SPC | Dale, Geneva, Henry, Houston | 119 min |
| Nov 29, 6:52 PM CST | Tornado Watch | SPC | Ashley, Chicot | 9 hr |
| Nov 29, 9:21 PM CST | Mesoscale Discussion | SPC | Jasper, Jefferson Davis, Lawrence, Lincoln, Newton, Simpson and 1 more | 54 min |
Nearby
Mesoscale Discussions in Tennessee, 2022Mesoscale Discussions in Mississippi, 2022Mesoscale Discussions in Arkansas, 2022Every 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.