Alert archive / Mississippi / Mesoscale Discussions in 2013
Mesoscale Discussion 569
The Storm Prediction Center issued this mesoscale discussion at Apr 27, 2013, 8:10 PM CDT for 8 counties in Arkansas; 26 counties in Mississippi; 13 counties in Tennessee. It was in force for 65 min.
The area
The outline as issued.
The facts
- Issued
- Apr 27, 2013, 8:10 PM CDT (01:10 UTC)
- Expired
- Apr 27, 2013, 9:15 PM CDT
- In force
- 65 min
- Issued by
- the Storm Prediction Center
All 47 counties
Arkansas County, AR, Crittenden County, AR, Cross County, AR, Desha County, AR, Lee County, AR, Monroe County, AR, Phillips County, AR, St. Francis County, AR, Alcorn County, MS, Benton County, MS, Bolivar County, MS, Calhoun County, MS, Chickasaw County, MS, Coahoma County, MS, DeSoto County, MS, Grenada County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Leflore 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, Webster County, MS, Yalobusha County, MS, Chester County, TN, Crockett County, TN, Decatur County, TN, Fayette County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Shelby County, TN, Tipton County, TN
The radar
The Memphis radar (KNQA), 80 km from the middle of the area, began a volume at 01:12 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 00:00Z, 1.2 hours before the alert went out and 47 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
- 111 J/kg
- Mixed-layer CIN
- -233 J/kg
- Mixed-layer LCL
- 434 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 10:25 PM CDT | Mesoscale Discussion | SPC | Desha | 2 hr |
| Apr 27, 8:38 PM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Cheatham, Davidson, Dickson, Gibson and 8 more | 67 min |
Nearby
Mesoscale Discussions in Mississippi, 2013Mesoscale Discussions in Tennessee, 2013Mesoscale Discussions in Arkansas, 2013Every mesoscale discussion in 2013
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.