Alert archive / Missouri / Mesoscale Discussions in 2016

Mesoscale Discussion 1166

July 6, 20165 states

The Storm Prediction Center issued this mesoscale discussion at Jul 6, 2016, 12:53 PM CDT for 5 states. It was in force for 67 min.

The area

The outline as issued.

The facts

Issued: Jul 6, 2016, 12:53 PM CDT (17:53 UTC)
Expired: Jul 6, 2016, 2:00 PM CDT
In force: 67 min
Issued by: the Storm Prediction Center

All 66 counties

Clay County, AR, Craighead County, AR, Greene County, AR, Independence County, AR, Jackson County, AR, Lawrence County, AR, Mississippi County, AR, Randolph County, AR, Sharp County, AR, Alexander County, IL, Franklin County, IL, Gallatin County, IL, Hardin County, IL, Jackson County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Williamson County, IL, Ballard County, KY, Calloway County, KY, Carlisle County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Livingston County, KY, Marshall County, KY, McCracken County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Crawford County, MO, Dent County, MO, Dunklin County, MO, Iron County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Pemiscot County, MO, Perry County, MO, Phelps County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Washington County, MO, Wayne County, MO, Carroll County, TN, Crockett County, TN, Dyer County, TN, Gibson County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, Obion County, TN, Weakley County, TN

The radar

The Memphis radar (KNQA), 143 km from the middle of the area, began a volume at 17:53 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 337Jul 6, 1:20 PM CDT

The nearest sounding before it

Little Rock, AR (KBYH), launched 12:00Z, 5.9 hours before the alert went out and 197 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: 2145 J/kg
Mixed-layer CIN: -156 J/kg
Mixed-layer LCL: 771 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -46 m²/s²
0-3 km storm-relative helicity: 2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Jul 6, 10:32 AM CDT	Mesoscale Discussion	SPC	Clay, Fulton, Greene, Randolph	58 min
Jul 6, 10:48 AM CDT	Severe Thunderstorm Watch	SPC	Baxter, Clay, Craighead, Fulton, Greene, Izard and 5 more	5 hr
Jul 5, 8:38 PM CDT	Mesoscale Discussion	SPC	Carroll, Jo Daviess, Stephenson	67 min
Jul 5, 9:50 PM CDT	Severe Thunderstorm Watch	SPC	Boone, Carroll, DeKalb, Jo Daviess, Lee, Ogle and 4 more	7 hr
Jul 5, 10:46 PM CDT	Mesoscale Discussion	SPC	Boone, Carroll, Jo Daviess, Ogle, Stephenson, Winnebago	89 min
Jul 6, 1:27 AM CDT	Mesoscale Discussion	SPC	Boone, Bureau, Carroll, Cook, DeKalb, DeWitt and 35 more	2 hr
Jul 6, 1:55 AM CDT	Severe Thunderstorm Watch	SPC	Bureau, Cass, Champaign, Cook, DeWitt, DuPage and 33 more	6 hr
Jul 6, 5:04 AM CDT	Mesoscale Discussion	SPC	Adams, Brown, Cass, Champaign, Christian, Clark and 41 more	116 min
Jul 6, 1:21 PM CDT	Mesoscale Discussion	SPC	Bath, Bourbon, Boyd, Bracken, Carter, Clark and 19 more	84 min
Jul 6, 1:24 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Allen, Anderson, Barren, Boyle, Breckinridge and 43 more	6 hr
Jul 6, 4:48 PM CDT	Mesoscale Discussion	SPC	Bell, Clay, Clinton, Cumberland, Knox, Laurel and 7 more	57 min
Jul 6, 1:50 AM CDT	Mesoscale Discussion	SPC	Barton, Jasper	85 min
Jul 6, 2:19 AM CDT	Severe Thunderstorm Watch	SPC	Barton, Bates, Cedar, Christian, Dade, Greene and 7 more	7 hr
Jul 6, 5:56 AM CDT	Mesoscale Discussion	SPC	Barton, Christian, Dade, Greene, Jasper, Lawrence and 2 more	2 hr
Jul 6, 6:51 PM CDT	Mesoscale Discussion	SPC	Carter, Cocke, Greene, Johnson, Sullivan, Unicoi and 1 more	54 min

Nearby

Mesoscale Discussions in Missouri, 2016 Mesoscale Discussions in Illinois, 2016 Mesoscale Discussions in Tennessee, 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.