Alert archive / Tennessee / Mesoscale Discussions in 2016

Mesoscale Discussion 1212

July 8, 20164 states

The Storm Prediction Center issued this mesoscale discussion at Jul 8, 2016, 4:42 PM CDT for 4 states. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued: Jul 8, 2016, 4:42 PM CDT (21:42 UTC)
Expired: Jul 8, 2016, 5:45 PM CDT
In force: 63 min
Issued by: the Storm Prediction Center

All 34 counties

Clay County, AR, Craighead County, AR, Greene County, AR, Lawrence County, AR, Mississippi County, AR, Randolph County, AR, Sharp County, AR, Carlisle County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Butler County, MO, Carter County, MO, Dunklin County, MO, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Pemiscot County, MO, Ripley County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO, Carroll County, TN, Chester County, TN, Crockett County, TN, Dyer County, TN, Gibson County, TN, Haywood County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, Obion County, TN, Tipton County, TN, Weakley County, TN

The radar

The Memphis radar (KNQA), 107 km from the middle of the area, began a volume at 21:41 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

Little Rock, AR (KBYH), launched 12:00Z, 9.7 hours before the alert went out and 165 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: 2153 J/kg
Mixed-layer CIN: -148 J/kg
Mixed-layer LCL: 1253 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: 72 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 8, 1:45 AM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Clay, Cleburne and 17 more	90 min
Jul 8, 9:23 AM CDT	Mesoscale Discussion	SPC	Benton, Crawford, Madison, Sebastian, Washington	97 min
Jul 8, 1:59 PM CDT	Mesoscale Discussion	SPC	Baxter, Boone, Clay, Cleburne, Craighead, Fulton and 12 more	2 hr
Jul 8, 2:26 PM CDT	Severe Thunderstorm Watch	SPC	Baxter, Clay, Cleburne, Craighead, Crittenden, Cross and 15 more	5 hr
Jul 8, 9:08 AM CDT	Mesoscale Discussion	SPC	Boone, Bracken, Bullitt, Campbell, Carroll, Franklin and 12 more	67 min
Jul 8, 10:06 AM CDT	Severe Thunderstorm Watch	SPC	Adair, Allen, Anderson, Barren, Bath, Bell and 101 more	7 hr
Jul 8, 12:01 PM CDT	Mesoscale Discussion	SPC	Bell, Breathitt, Clay, Floyd, Harlan, Johnson and 10 more	59 min
Jul 8, 2:49 PM CDT	Mesoscale Discussion	SPC	Adair, Bell, Breathitt, Casey, Clark, Clay and 32 more	56 min
Jul 8, 5:06 PM CDT	Mesoscale Discussion	SPC	Breckinridge, Bullitt, Daviess, Hancock, Hardin, Henderson and 3 more	84 min
Jul 7, 8:01 PM CDT	Mesoscale Discussion	SPC	Barton, Bates, Benton, Camden, Cass, Cedar and 11 more	119 min
Jul 7, 8:21 PM CDT	Severe Thunderstorm Watch	SPC	Audrain, Barry, Barton, Bates, Benton, Boone and 37 more	6 hr
Jul 7, 11:01 PM CDT	Mesoscale Discussion	SPC	Barton, Bates, Benton, Boone, Callaway, Camden and 16 more	119 min
Jul 8, 12:34 PM CDT	Severe Thunderstorm Watch	SPC	Anderson, Bedford, Bledsoe, Blount, Campbell, Cannon and 50 more	7 hr
Jul 8, 2:32 PM CDT	Mesoscale Discussion	SPC	Johnson	88 min

Nearby

Mesoscale Discussions in Tennessee, 2016 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.