Alert archive / Missouri / Mesoscale Discussions in 2015

Mesoscale Discussion 193

April 2, 20154 counties in Arkansas; 9 counties in Missouri; Craig County, Delaware County, Ottawa County, Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 2, 2015, 10:12 PM CDT for 4 counties in Arkansas; 9 counties in Missouri; Craig County, Delaware County, Ottawa County, Oklahoma. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued: Apr 2, 2015, 10:12 PM CDT (03:12 UTC)
Expired: Apr 2, 2015, 11:45 PM CDT
In force: 93 min
Issued by: the Storm Prediction Center

Counties Benton County, AR, Boone County, AR, Carroll County, AR, Marion County, AR, Barry County, MO, Christian County, MO, Douglas County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Ozark County, MO, Stone County, MO, Taney County, MO, Craig County, OK, Delaware County, OK, Ottawa County, OK

The radar

The Springfield radar (KSGF), 87 km from the middle of the area, began a volume at 03:11 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.

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 3.2 hours before the alert went out and 36 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: 1838 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1146 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 149 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 5.0

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
Apr 2, 7:02 PM CDT	Tornado Watch	SPC	Baxter, Benton, Boone, Carroll, Fulton, Marion	8 hr
Apr 3, 1:16 AM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Clay, Craighead and 13 more	59 min
Apr 3, 1:35 AM CDT	Tornado Watch	SPC	Baxter, Boone, Clay, Cleburne, Craighead, Fulton and 14 more	6 hr
Apr 3, 1:52 AM CDT	Severe Thunderstorm Watch	SPC	Benton, Carroll	4 hr
Apr 3, 5:43 AM CDT	Mesoscale Discussion	SPC	Baxter, Clay, Cleburne, Craighead, Fulton, Greene and 13 more	2 hr
Apr 3, 12:14 PM CDT	Tornado Watch	SPC	Mississippi	8 hr
Apr 3, 3:57 PM CDT	Mesoscale Discussion	SPC	Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 6 more	93 min
Apr 3, 5:54 PM CDT	Mesoscale Discussion	SPC	Union	2 hr
Apr 3, 5:55 PM CDT	Severe Thunderstorm Watch	SPC	Ashley, Chicot	4 hr
Apr 2, 7:32 PM CDT	Mesoscale Discussion	SPC	Bollinger, Cape Girardeau, Iron, Madison, Perry, Sainte Genevieve and 3 more	58 min
Apr 2, 10:41 PM CDT	Severe Thunderstorm Watch	SPC	Bollinger, Butler, Cape Girardeau, Carter, Crawford, Iron and 13 more	6 hr
Apr 3, 3:39 AM CDT	Mesoscale Discussion	SPC	Scott	66 min
Apr 3, 4:37 AM CDT	Mesoscale Discussion	SPC	Christian, Dent, Douglas, Howell, Laclede, Oregon and 8 more	83 min
Apr 3, 11:56 AM CDT	Mesoscale Discussion	SPC	Mississippi, Pemiscot	94 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.