Alert archive / Tennessee / Mesoscale Discussions in 2018
Mesoscale Discussion 901
The Storm Prediction Center issued this mesoscale discussion at Jun 26, 2018, 10:06 PM CDT for Crittenden County, Cross County, Arkansas; Butler County, Logan County, Todd County, Kentucky; 22 counties in Tennessee. It was in force for 84 min.
The area
The outline as issued.
The facts
- Issued
- Jun 26, 2018, 10:06 PM CDT (03:06 UTC)
- Expired
- Jun 26, 2018, 11:30 PM CDT
- In force
- 84 min
- Issued by
- the Storm Prediction Center
All 27 counties
Crittenden County, AR, Cross County, AR, Butler County, KY, Logan County, KY, Todd County, KY, Benton County, TN, Carroll County, TN, Chester County, TN, Crockett County, TN, Decatur County, TN, Dickson County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Houston County, TN, Humphreys County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Montgomery County, TN, Perry County, TN, Shelby County, TN, Stewart County, TN, Tipton County, TN
The radar
The Memphis radar (KNQA), 115 km from the middle of the area, began a volume at 03:10 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, 3.1 hours before the alert went out and 157 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
- 831 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 1877 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 92 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 |
|---|---|---|---|---|
| Jun 26, 7:41 PM CDT | Mesoscale Discussion | SPC | Clay, Craighead, Crittenden, Cross, Greene, Independence and 6 more | 2 hr |
| Jun 27, 1:42 PM CDT | Mesoscale Discussion | SPC | Clay, Craighead, Crittenden, Greene, Lawrence, Mississippi and 2 more | 93 min |
| Jun 27, 1:29 PM CDT | Mesoscale Discussion | SPC | Allen, Barren, Clinton, Cumberland, Edmonson, Metcalfe and 3 more | 3 hr |
Nearby
Mesoscale Discussions in Tennessee, 2018Mesoscale Discussions in Kentucky, 2018Mesoscale Discussions in Arkansas, 2018Every mesoscale discussion in 2018
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.