Alert archive / Tennessee / Mesoscale Discussions in 2016

Mesoscale Discussion 1210

July 8, 20164 states

The Storm Prediction Center issued this mesoscale discussion at Jul 8, 2016, 2:49 PM CDT for 4 states. It was in force for 56 min.

The area

The outline as issued.

The facts

Issued
Jul 8, 2016, 2:49 PM CDT (19:49 UTC)
Expired
Jul 8, 2016, 3:45 PM CDT
In force
56 min
Issued by
the Storm Prediction Center
All 100 counties

Adair County, KY, Bell County, KY, Breathitt County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Cumberland County, KY, Estill County, KY, Floyd County, KY, Garrard County, KY, Harlan County, KY, Jackson County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Laurel County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Lincoln County, KY, Madison County, KY, Magoffin County, KY, Martin County, KY, McCreary County, KY, Menifee County, KY, Monroe County, KY, Morgan County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Russell County, KY, Wayne County, KY, Whitley County, KY, Wolfe County, KY, Anderson County, TN, Bedford County, TN, Bledsoe County, TN, Blount County, TN, Campbell County, TN, Cannon County, TN, Claiborne County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, DeKalb County, TN, Fentress County, TN, Grainger County, TN, Greene County, TN, Grundy County, TN, Hamblen County, TN, Hamilton County, TN, Hancock County, TN, Hawkins County, TN, Jackson County, TN, Jefferson County, TN, Knox County, TN, Loudon County, TN, Macon County, TN, Marion County, TN, Marshall County, TN, Maury County, TN, McMinn County, TN, Meigs County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Rutherford County, TN, Scott County, TN, Sequatchie County, TN, Smith County, TN, Sullivan County, TN, Trousdale County, TN, Union County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Williamson County, TN, Wilson County, TN, Buchanan County, VA, City of Bristol, VA, City of Norton, VA, Dickenson County, VA, Lee County, VA, Russell County, VA, Scott County, VA, Tazewell County, VA, Washington County, VA, Wise County, VA, Logan County, WV, McDowell County, WV, Mingo County, WV, Raleigh County, WV, Wyoming County, WV

The radar

The Knoxville radar (KMRX), 103 km from the middle of the area, began a volume at 19:53 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.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.8 hours before the alert went out and 194 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-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2016-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2067 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2016-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
2067 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
1056 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
149 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.

IssuedProductOfficeCountiesLasted
Jul 8, 9:08 AM CDTMesoscale DiscussionSPCBoone, Bracken, Bullitt, Campbell, Carroll, Franklin and 12 more67 min
Jul 8, 10:06 AM CDTSevere Thunderstorm WatchSPCAdair, Allen, Anderson, Barren, Bath, Bell and 101 more7 hr
Jul 8, 12:01 PM CDTMesoscale DiscussionSPCBell, Breathitt, Clay, Floyd, Harlan, Johnson and 10 more59 min
Jul 8, 1:59 PM CDTMesoscale DiscussionSPCBallard, Calloway, Carlisle, Fulton, Graves, Hickman and 2 more2 hr
Jul 8, 2:26 PM CDTSevere Thunderstorm WatchSPCFulton, Hickman5 hr
Jul 8, 4:42 PM CDTMesoscale DiscussionSPCCarlisle, Fulton, Graves, Hickman63 min
Jul 8, 5:06 PM CDTMesoscale DiscussionSPCBreckinridge, Bullitt, Daviess, Hancock, Hardin, Henderson and 3 more84 min
Jul 8, 12:34 PM CDTSevere Thunderstorm WatchSPCAnderson, Bedford, Bledsoe, Blount, Campbell, Cannon and 50 more7 hr
Jul 8, 2:32 PM CDTMesoscale DiscussionSPCJohnson88 min
Jul 8, 2:53 PM CDTSevere Thunderstorm WatchSPCAppomattox, Bedford, Bland, Botetourt, Campbell, Carroll and 23 more5 hr
Jul 8, 4:48 PM CDTMesoscale DiscussionSPCBrunswick, Lunenburg, Mecklenburg57 min
Jul 8, 5:15 PM CDTSevere Thunderstorm WatchSPCBrunswick, Greensville, Lunenburg, Mecklenburg, City of Emporia6 hr

Nearby

Mesoscale Discussions in Tennessee, 2016Mesoscale Discussions in Kentucky, 2016Mesoscale Discussions in Virginia, 2016Every 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.