Alert archive / Missouri / Mesoscale Discussions in 2015

Mesoscale Discussion 137

March 24, 201512 counties in Arkansas; 15 counties in Missouri; Latimer County, LeFlore County, Pittsburg County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Mar 24, 2015, 7:34 PM CDT for 12 counties in Arkansas; 15 counties in Missouri; Latimer County, LeFlore County, Pittsburg County, Oklahoma. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued: Mar 24, 2015, 7:34 PM CDT (00:34 UTC)
Expired: Mar 24, 2015, 9:30 PM CDT
In force: 116 min
Issued by: the Storm Prediction Center

All 30 counties

Baxter County, AR, Boone County, AR, Franklin County, AR, Johnson County, AR, Logan County, AR, Marion County, AR, Newton County, AR, Pope County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Yell County, AR, Audrain County, MO, Boone County, MO, Callaway County, MO, Dent County, MO, Gasconade County, MO, Howard County, MO, Howell County, MO, Maries County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Ozark County, MO, Phelps County, MO, Randolph County, MO, Texas County, MO, Latimer County, OK, LeFlore County, OK, Pittsburg County, OK

The radar

The Springfield radar (KSGF), 45 km from the middle of the area, began a volume at 00:34 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, 0.6 hours before the alert went out and 61 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: 1351 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 1035 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 122 m²/s²
0-3 km storm-relative helicity: 223 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 6.3

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
Mar 25, 1:30 PM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Cleburne, Conway and 14 more	2 hr
Mar 25, 2:16 PM CDT	Severe Thunderstorm Watch	SPC	Baxter, Benton, Boone, Carroll, Cleburne, Conway and 22 more	8 hr
Mar 25, 5:33 PM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Cleburne, Conway and 19 more	87 min
Mar 25, 6:46 PM CDT	Mesoscale Discussion	SPC	Clay	59 min
Mar 25, 10:56 AM CDT	Mesoscale Discussion	SPC	Barton, Bates, Cedar, Dade, Dallas, Hickory and 4 more	3 hr
Mar 25, 1:45 PM CDT	Mesoscale Discussion	SPC	Adair, Caddo, Canadian, Carter, Cherokee, Cleveland and 32 more	3 hr
Mar 25, 2:50 PM CDT	Mesoscale Discussion	SPC	Cotton, Jefferson, Tillman	115 min
Mar 25, 5:09 PM CDT	Mesoscale Discussion	SPC	Caddo, Comanche, Kiowa, Washita	66 min

Nearby

Mesoscale Discussions in Missouri, 2015 Mesoscale Discussions in Arkansas, 2015 Mesoscale Discussions in Oklahoma, 2015 Every mesoscale discussion in 2015

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.