Alert archive / Mississippi / Mesoscale Discussions in 2016

Mesoscale Discussion 1282

July 14, 2016East Carroll Parish, Madison Parish, Richland Parish, Louisiana; 6 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Jul 14, 2016, 8:24 PM CDT for East Carroll Parish, Madison Parish, Richland Parish, Louisiana; 6 counties in Mississippi. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: Jul 14, 2016, 8:24 PM CDT (01:24 UTC)
Expired: Jul 14, 2016, 10:00 PM CDT
In force: 96 min
Issued by: the Storm Prediction Center

Counties East Carroll Parish, LA, Madison Parish, LA, Richland Parish, LA, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Leflore County, MS, Sharkey County, MS, Washington County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 115 km from the middle of the area, began a volume at 01:25 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

Jackson, MS (KJAN), launched 00:00Z, 1.4 hours before the alert went out and 106 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1043 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 1449 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 14, 7:08 PM CDT	Severe Thunderstorm Watch	SPC	Catahoula, Concordia, East Carroll, Franklin, Madison, Morehouse and 3 more	4 hr
Jul 14, 10:40 PM CDT	Mesoscale Discussion	SPC	Allen, Avoyelles, Catahoula, Concordia, East Feliciana, Evangeline and 7 more	2 hr

Nearby

Mesoscale Discussions in Mississippi, 2016 Mesoscale Discussions in Louisiana, 2016 Every 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.