Alert archive / Mississippi / Mesoscale Discussions in 2013

Mesoscale Discussion 967

June 5, 20134 parishes in Louisiana; 22 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Jun 5, 2013, 4:03 PM CDT for 4 parishes in Louisiana; 22 counties in Mississippi. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued: Jun 5, 2013, 4:03 PM CDT (21:03 UTC)
Expired: Jun 5, 2013, 5:30 PM CDT
In force: 87 min
Issued by: the Storm Prediction Center

All 26 counties

Franklin Parish, LA, Madison Parish, LA, Richland Parish, LA, Tensas Parish, LA, Attala County, MS, Carroll County, MS, Choctaw County, MS, Claiborne County, MS, Copiah County, MS, Hinds County, MS, Holmes County, MS, Jefferson County, MS, Kemper County, MS, Leake County, MS, Lowndes County, MS, Madison County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Rankin County, MS, Scott County, MS, Warren County, MS, Winston County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 45 km from the middle of the area, began a volume at 21:03 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 12:00Z, 9.1 hours before the alert went out and 35 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: 2242 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 650 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: 25 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 5, 1:10 PM CDT	Severe Thunderstorm Watch	SPC	East Carroll, Franklin, Madison, Morehouse, Richland, Tensas and 1 more	6 hr
Jun 5, 11:53 AM CDT	Mesoscale Discussion	SPC	Alcorn, Attala, Benton, Bolivar, Calhoun, Carroll and 39 more	97 min
Jun 5, 5:48 PM CDT	Mesoscale Discussion	SPC	Clarke, Copiah, Covington, Franklin, Jasper, Jefferson Davis and 11 more	87 min
Jun 5, 6:12 PM CDT	Mesoscale Discussion	SPC	DeSoto, Tunica	93 min

Nearby

Mesoscale Discussions in Mississippi, 2013 Mesoscale Discussions in Louisiana, 2013 Every 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.