Alert archive / Missouri / Mesoscale Discussions in 2023

Mesoscale Discussion 481

April 5, 2023Boone County, Marion County, Arkansas; 4 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Apr 5, 2023, 6:25 AM CDT for Boone County, Marion County, Arkansas; 4 counties in Missouri. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued: Apr 5, 2023, 6:25 AM CDT (11:25 UTC)
Expired: Apr 5, 2023, 8:00 AM CDT
In force: 95 min
Issued by: the Storm Prediction Center
Concerning: Tornado watch 124

Counties Boone County, AR, Marion County, AR, Douglas County, MO, Howell County, MO, Ozark County, MO, Taney County, MO

The radar

The Springfield radar (KSGF), 94 km from the middle of the area, began a volume at 11:25 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

Springfield, MO (KSGF), launched 00:00Z, 11.4 hours before the alert went out and 109 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: 1291 J/kg
Mixed-layer CIN: -109 J/kg
Mixed-layer LCL: 1115 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 476 m²/s²
0-3 km storm-relative helicity: 702 m²/s²
Significant tornado parameter: 2.3
Supercell composite: 6.2

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
Apr 4, 8:46 PM CDT	Mesoscale Discussion	SPC	Arkansas, Bradley, Calhoun, Clark, Cleveland, Columbia and 19 more	119 min
Apr 5, 12:56 AM CDT	Mesoscale Discussion	SPC	Baxter, Clay, Cleburne, Conway, Craighead, Cross and 25 more	94 min
Apr 5, 1:32 AM CDT	Tornado Watch	SPC	Baxter, Clay, Cleburne, Conway, Craighead, Faulkner and 23 more	9 hr
Apr 5, 2:03 AM CDT	Mesoscale Discussion	SPC	Conway, Izard, Sharp, Stone, Van Buren	87 min
Apr 5, 2:27 AM CDT	Severe Thunderstorm Watch	SPC	Benton, Carroll, Madison, Washington	10 hr
Apr 5, 4:25 AM CDT	Mesoscale Discussion	SPC	Clark, Garland, Hempstead, Hot Spring, Howard, Little River and 10 more	95 min
Apr 5, 4:54 AM CDT	Tornado Watch	SPC	Benton, Boone, Carroll, Crawford, Franklin, Hempstead and 18 more	6 hr
Apr 5, 8:44 AM CDT	Tornado Watch	SPC	Arkansas, Baxter, Bradley, Calhoun, Clark, Clay and 39 more	7 hr
Apr 5, 11:51 AM CDT	Mesoscale Discussion	SPC	Arkansas, Clay, Craighead, Crittenden, Cross, Greene and 9 more	84 min
Apr 4, 8:15 PM CDT	Mesoscale Discussion	SPC	Andrew, Bates, Buchanan, Caldwell, Cass, Clay and 11 more	2 hr
Apr 4, 11:49 PM CDT	Mesoscale Discussion	SPC	Putnam, Schuyler	86 min
Apr 5, 12:05 AM CDT	Severe Thunderstorm Watch	SPC	Barton, Bates, Benton, Cass, Cedar, Chariton and 14 more	4 hr
Apr 5, 3:27 AM CDT	Mesoscale Discussion	SPC	Lincoln, Pike, Saint Charles, City of Saint Louis	93 min
Apr 5, 3:48 AM CDT	Mesoscale Discussion	SPC	Cape Girardeau	27 min

Nearby

Mesoscale Discussions in Missouri, 2023 Mesoscale Discussions in Arkansas, 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.