Alert archive / Missouri / Mesoscale Discussions in 2016

Mesoscale Discussion 579

May 9, 2016Benton County, Carroll County, Arkansas; 16 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at May 9, 2016, 10:37 PM CDT for Benton County, Carroll County, Arkansas; 16 counties in Missouri. It was in force for 83 min.

The area

The outline as issued.

The facts

Issued: May 9, 2016, 10:37 PM CDT (03:37 UTC)
Expired: May 10, 2016, 12:00 AM CDT
In force: 83 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

Counties Benton County, AR, Carroll County, AR, Barry County, MO, Barton County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Greene County, MO, Hickory County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Polk County, MO, St. Clair County, MO, Stone County, MO, Vernon County, MO

The radar

The Springfield radar (KSGF), 52 km from the middle of the area, began a volume at 03:40 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, 3.6 hours before the alert went out and 47 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: 826 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 698 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 208 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 6.1

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
May 9, 7:23 PM CDT	Tornado Watch	SPC	Arkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 53 more	8 hr
May 9, 8:01 PM CDT	Mesoscale Discussion	SPC	Bradley, Calhoun, Clark, Cleburne, Cleveland, Columbia and 32 more	89 min
May 9, 11:15 PM CDT	Mesoscale Discussion	SPC	Arkansas, Bradley, Calhoun, Clark, Cleburne, Cleveland and 26 more	90 min
May 10, 1:42 AM CDT	Mesoscale Discussion	SPC	Ashley, Chicot, Desha, Drew	93 min
May 9, 7:33 PM CDT	Mesoscale Discussion	SPC	Atchison, Holt	57 min
May 9, 8:16 PM CDT	Severe Thunderstorm Watch	SPC	Bollinger, Butler, Cape Girardeau, Carter, Iron, Madison and 8 more	6 hr
May 9, 9:42 PM CDT	Mesoscale Discussion	SPC	Bollinger, Cape Girardeau, Mississippi, New Madrid, Perry, Scott and 1 more	93 min
May 9, 10:06 PM CDT	Mesoscale Discussion	SPC	Atchison, Holt, Nodaway	54 min
May 10, 7:01 AM CDT	Mesoscale Discussion	SPC	Iron, Jefferson, Madison, Perry, Sainte Genevieve, Saint Francois	104 min
May 10, 12:59 PM CDT	Severe Thunderstorm Watch	SPC	Cape Girardeau, Mississippi, New Madrid, Scott, Stoddard	9 hr
May 10, 3:08 PM CDT	Mesoscale Discussion	SPC	Mississippi	67 min

Nearby

Mesoscale Discussions in Missouri, 2016 Mesoscale Discussions in Arkansas, 2016 Every mesoscale discussion in 2016

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.