Alert archive / Arkansas / Mesoscale Discussions in 2016
Mesoscale Discussion 1280
The Storm Prediction Center issued this mesoscale discussion at Jul 14, 2016, 5:43 PM CDT for 26 counties in Arkansas; 15 counties in Mississippi. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 14, 2016, 5:43 PM CDT (22:43 UTC)
- Expired
- Jul 14, 2016, 7:45 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 41 counties
Arkansas County, AR, Ashley County, AR, Bradley County, AR, Calhoun County, AR, Chicot County, AR, Clark County, AR, Cleveland County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Jefferson County, AR, Lincoln County, AR, Lonoke County, AR, Monroe County, AR, Nevada County, AR, Ouachita County, AR, Perry County, AR, Phillips County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, Union County, AR, Bolivar County, MS, Carroll County, MS, Coahoma County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Leflore County, MS, Quitman County, MS, Sharkey County, MS, Sunflower County, MS, Tallahatchie County, MS, Washington County, MS, Yalobusha County, MS, Yazoo County, MS
The radar
The Little Rock radar (KLZK), 111 km from the middle of the area, began a volume at 22:46 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 (KBYH), launched 12:00Z, 10.7 hours before the alert went out and 205 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
- 2328 J/kg
- Mixed-layer CIN
- -77 J/kg
- Mixed-layer LCL
- 1131 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -93 m²/s²
- 0-3 km storm-relative helicity
- -70 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 14, 3:10 AM CDT | Mesoscale Discussion | SPC | Howard, Little River, Polk, Sevier | 95 min |
| Jul 14, 11:21 AM CDT | Mesoscale Discussion | SPC | Benton, Crawford, Sebastian, Washington | 114 min |
| Jul 14, 11:38 AM CDT | Severe Thunderstorm Watch | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 5 hr |
| Jul 14, 2:14 PM CDT | Mesoscale Discussion | SPC | Clark, Conway, Crawford, Dallas, Franklin, Garland and 20 more | 91 min |
| Jul 14, 3:05 PM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Bradley, Calhoun, Clark, Cleveland, Columbia and 32 more | 6 hr |
| Jul 14, 9:42 AM CDT | Mesoscale Discussion | SPC | Alcorn, Benton, DeSoto, Marshall, Prentiss, Tate and 2 more | 2 hr |
Nearby
Mesoscale Discussions in Arkansas, 2016Mesoscale Discussions in Mississippi, 2016Every mesoscale discussion in 2016
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.