Alert archive / Mississippi / Mesoscale Discussions in 2012
Mesoscale Discussion 1060
The Storm Prediction Center issued this mesoscale discussion at Jun 4, 2012, 8:03 PM CDT for 4 counties in Arkansas; 7 parishes in Louisiana; 27 counties in Mississippi. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- Jun 4, 2012, 8:03 PM CDT (01:03 UTC)
- Expired
- Jun 4, 2012, 9:30 PM CDT
- In force
- 87 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 38 counties
Ashley County, AR, Chicot County, AR, Desha County, AR, Drew County, AR, East Carroll Parish, LA, Franklin Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Richland Parish, LA, Tensas Parish, LA, West Carroll Parish, LA, Attala County, MS, Bolivar County, MS, Carroll County, MS, Choctaw County, MS, Claiborne County, MS, Copiah County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Leake County, MS, Leflore County, MS, Madison County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Sunflower County, MS, Tallahatchie County, MS, Warren County, MS, Washington County, MS, Webster County, MS, Winston County, MS, Yazoo County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 98 km from the middle of the area, began a volume at 01:05 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
Jackson, MS (KJAN), launched 00:00Z, 1.1 hours before the alert went out and 89 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
- 1465 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 1552 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.9
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 |
|---|---|---|---|---|
| Jun 4, 9:11 PM CDT | Mesoscale Discussion | SPC | Mississippi | 94 min |
| Jun 4, 9:43 PM CDT | Severe Thunderstorm Watch | SPC | Mississippi | 6 hr |
| Jun 4, 8:41 PM CDT | Severe Thunderstorm Watch | SPC | East Carroll, West Carroll | 4 hr |
| Jun 4, 11:29 PM CDT | Mesoscale Discussion | SPC | East Carroll | 61 min |
Nearby
Mesoscale Discussions in Mississippi, 2012Mesoscale Discussions in Louisiana, 2012Mesoscale Discussions in Arkansas, 2012Every mesoscale discussion in 2012
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.