Alert archive / Tennessee / Mesoscale Discussions in 2020
Mesoscale Discussion 1072
The Storm Prediction Center issued this mesoscale discussion at Jul 1, 2020, 2:54 PM CDT for 5 states. It was in force for 66 min.
The area
The outline as issued.
The facts
- Issued
- Jul 1, 2020, 2:54 PM CDT (19:54 UTC)
- Expired
- Jul 1, 2020, 4:00 PM CDT
- In force
- 66 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch unlikely
- Chance of a watch
- 20%
All 36 counties
Craighead County, AR, Crittenden County, AR, Cross County, AR, Jackson County, AR, Lee County, AR, Mississippi County, AR, Poinsett County, AR, St. Francis County, AR, Woodruff County, AR, Fulton County, KY, Graves County, KY, Hickman County, KY, Dunklin County, MO, Pemiscot County, MO, Benton County, MS, DeSoto County, MS, Marshall County, MS, Panola County, MS, Tate County, MS, Tippah County, MS, Tunica County, MS, Carroll County, TN, Chester County, TN, Crockett County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Haywood County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN, Weakley County, TN
The radar
The Memphis radar (KNQA), 34 km from the middle of the area, began a volume at 19:57 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
Little Rock, AR (KLZK), launched 12:00Z, 7.9 hours before the alert went out and 92 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
- 1981 J/kg
- Mixed-layer CIN
- -109 J/kg
- Mixed-layer LCL
- 621 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 61 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 |
|---|---|---|---|---|
| Jul 1, 9:55 AM CDT | Mesoscale Discussion | SPC | Baxter, Clay, Craighead, Cross, Fulton, Greene and 9 more | 95 min |
| Jul 1, 4:46 PM CDT | Mesoscale Discussion | SPC | Alcorn, Benton, Itawamba, Lafayette, Lee, Marshall and 6 more | 119 min |
| Jun 30, 11:25 PM CDT | Severe Thunderstorm Watch | SPC | Andrew, Atchison, Buchanan, Clay, Clinton, Holt and 4 more | 7 hr |
| Jul 1, 1:48 AM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Buchanan, Holt, Nodaway | 87 min |
| Jul 1, 3:50 AM CDT | Mesoscale Discussion | SPC | Andrew, Buchanan, Clinton, DeKalb, Gentry, Nodaway and 1 more | 85 min |
| Jul 1, 5:40 AM CDT | Mesoscale Discussion | SPC | Benton, Caldwell, Camden, Carroll, Cass, Cedar and 21 more | 65 min |
Nearby
Mesoscale Discussions in Tennessee, 2020Mesoscale Discussions in Arkansas, 2020Mesoscale Discussions in Mississippi, 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.