Alert archive / Tennessee / Mesoscale Discussions in 2017
Mesoscale Discussion 326
The Storm Prediction Center issued this mesoscale discussion at Mar 25, 2017, 1:05 AM CDT for 6 states. It was in force for 115 min.
The area
The outline as issued.
The facts
- Issued
- Mar 25, 2017, 1:05 AM CDT (06:05 UTC)
- Expired
- Mar 25, 2017, 3:00 AM CDT
- In force
- 115 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 43 counties
Clay County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Greene County, AR, Lee County, AR, Mississippi County, AR, Phillips County, AR, Poinsett County, AR, St. Francis County, AR, Alexander County, IL, Ballard County, KY, Carlisle County, KY, Fulton County, KY, Hickman County, KY, Butler County, MO, Dunklin County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Scott County, MO, Stoddard County, MO, Benton County, MS, Coahoma County, MS, DeSoto County, MS, Lafayette County, MS, Marshall County, MS, Panola County, MS, Quitman County, MS, Tate County, MS, Tunica County, MS, Yalobusha County, MS, Crockett County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Haywood County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN
The radar
The Memphis radar (KNQA), 6 km from the middle of the area, began a volume at 06:08 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 (KBYH), launched 00:00Z, 6.1 hours before the alert went out and 64 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
- 107 J/kg
- Mixed-layer CIN
- -62 J/kg
- Mixed-layer LCL
- 1523 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 211 m²/s²
- 0-3 km storm-relative helicity
- 258 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
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 |
|---|---|---|---|---|
| Mar 24, 8:39 PM CDT | Mesoscale Discussion | SPC | Columbia, Lafayette, Miller, Nevada, Ouachita | 66 min |
| Mar 24, 9:14 PM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Bradley, Calhoun, Clark, Cleveland, Columbia and 13 more | 6 hr |
| Mar 24, 9:36 PM CDT | Mesoscale Discussion | SPC | Baxter, Boone, Carroll, Clay, Cleburne, Conway and 29 more | 54 min |
| Mar 24, 11:41 PM CDT | Mesoscale Discussion | SPC | Ashley, Chicot | 64 min |
| Mar 25, 12:05 AM CDT | Severe Thunderstorm Watch | SPC | Ashley, Chicot | 5 hr |
| Mar 25, 3:06 AM CDT | Mesoscale Discussion | SPC | Adams, Claiborne, Copiah, Franklin, Hinds, Holmes and 10 more | 54 min |
| Mar 25, 12:08 PM CDT | Mesoscale Discussion | SPC | George, Hancock, Harrison, Jackson | 3 hr |
| Mar 25, 1:34 PM CDT | Mesoscale Discussion | SPC | Attala, Calhoun, Carroll, Chickasaw, Choctaw, Grenada and 9 more | 116 min |
Nearby
Mesoscale Discussions in Tennessee, 2017Mesoscale Discussions in Arkansas, 2017Mesoscale Discussions in Mississippi, 2017Every mesoscale discussion in 2017
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.