Alert archive / Mississippi / Mesoscale Discussions in 2023

Mesoscale Discussion 1113

June 16, 20238 counties in Alabama; Washington Parish, Louisiana; 47 counties in Mississippi

The Storm Prediction Center issued this mesoscale discussion at Jun 16, 2023, 4:35 PM CDT for 8 counties in Alabama; Washington Parish, Louisiana; 47 counties in Mississippi. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: Jun 16, 2023, 4:35 PM CDT (21:35 UTC)
Expired: Jun 16, 2023, 6:00 PM CDT
In force: 85 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...severe thunderstorm watch likely
Chance of a watch: 80%

All 56 counties

Baldwin County, AL, Choctaw County, AL, Clarke County, AL, Greene County, AL, Marengo County, AL, Mobile County, AL, Sumter County, AL, Washington County, AL, Washington Parish, LA, Attala County, MS, Carroll County, MS, Choctaw County, MS, Clarke County, MS, Copiah County, MS, Covington County, MS, Forrest County, MS, George County, MS, Greene County, MS, Harrison County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Jackson County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Leake County, MS, Leflore County, MS, Lincoln County, MS, Lowndes County, MS, Madison County, MS, Marion County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Pearl River County, MS, Perry County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Smith County, MS, Stone County, MS, Walthall County, MS, Warren County, MS, Wayne County, MS, Webster County, MS, Winston County, MS, Yazoo County, MS

The radar

The Mobile radar (KMOB), 122 km from the middle of the area, began a volume at 21:37 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.

Severe Thunderstorm Watch 320Jun 16, 4:50 PM CDT

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 9.6 hours before the alert went out and 181 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: 3438 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 681 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 9.5

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
Jun 16, 1:52 AM CDT	Severe Thunderstorm Watch	SPC	Baldwin, Choctaw, Clarke, Conecuh, Covington, Escambia and 3 more	8 hr
Jun 16, 6:41 AM CDT	Mesoscale Discussion	SPC	Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 9 more	2 hr
Jun 16, 8:58 AM CDT	Severe Thunderstorm Watch	SPC	Coffee, Dale, Geneva, Houston	5 hr
Jun 16, 9:03 AM CDT	Mesoscale Discussion	SPC	Coffee, Conecuh, Covington, Escambia, Geneva, Houston	87 min
Jun 16, 4:52 PM CDT	Severe Thunderstorm Watch	SPC	Baldwin, Bibb, Choctaw, Clarke, Conecuh, Dallas and 14 more	9 hr
Jun 16, 6:34 PM CDT	Mesoscale Discussion	SPC	Baldwin, Bibb, Choctaw, Clarke, Dallas, Fayette and 12 more	86 min
Jun 15, 10:13 PM CDT	Mesoscale Discussion	SPC	Bossier, Caddo	62 min
Jun 15, 10:24 PM CDT	Severe Thunderstorm Watch	SPC	Bienville, Bossier, Caddo, Claiborne, De Soto, Red River and 1 more	8 hr
Jun 15, 11:29 PM CDT	Mesoscale Discussion	SPC	Bienville, Bossier, Caddo, De Soto, Red River, Webster	91 min
Jun 16, 1:02 AM CDT	Mesoscale Discussion	SPC	Avoyelles, Bienville, Bossier, Caddo, Caldwell, Catahoula and 19 more	3 hr
Jun 16, 3:23 AM CDT	Mesoscale Discussion	SPC	De Soto, Sabine	2 hr
Jun 16, 5:38 AM CDT	Severe Thunderstorm Watch	SPC	Acadia, Allen, Beauregard, Calcasieu, Cameron, Jefferson Davis and 2 more	2 hr
Jun 16, 2:15 PM CDT	Mesoscale Discussion	SPC	Bolivar, Coahoma, DeSoto, Panola, Quitman, Tallahatchie and 2 more	2 hr

Nearby

Mesoscale Discussions in Mississippi, 2023 Mesoscale Discussions in Alabama, 2023 Mesoscale Discussions in Louisiana, 2023 Every mesoscale discussion in 2023

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.