Alert archive / Tennessee / Mesoscale Discussions in 2015
Mesoscale Discussion 1264
The Storm Prediction Center issued this mesoscale discussion at Jul 1, 2015, 11:29 AM CDT for 4 states. It was in force for 61 min.
The area
The outline as issued.
The facts
- Issued
- Jul 1, 2015, 11:29 AM CDT (16:29 UTC)
- Expired
- Jul 1, 2015, 12:30 PM CDT
- In force
- 61 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 98 counties
DeKalb County, AL, Jackson County, AL, Lauderdale County, AL, Limestone County, AL, Madison County, AL, Morgan County, AL, Catoosa County, GA, Chattooga County, GA, Dade County, GA, Murray County, GA, Walker County, GA, Whitfield County, GA, Adair County, KY, Allen County, KY, Barren County, KY, Boyle County, KY, Casey County, KY, Clinton County, KY, Cumberland County, KY, Green County, KY, Hart County, KY, Larue County, KY, Lincoln County, KY, Marion County, KY, McCreary County, KY, Metcalfe County, KY, Monroe County, KY, Pulaski County, KY, Russell County, KY, Simpson County, KY, Taylor County, KY, Warren County, KY, Washington County, KY, Wayne County, KY, Whitley County, KY, Anderson County, TN, Bedford County, TN, Benton County, TN, Bledsoe County, TN, Bradley County, TN, Campbell County, TN, Cannon County, TN, Carroll County, TN, Cheatham County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, Decatur County, TN, DeKalb County, TN, Dickson County, TN, Fentress County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hamilton County, TN, Hardin County, TN, Henderson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Knox County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Loudon County, TN, Macon County, TN, Marion County, TN, Marshall County, TN, Maury County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Montgomery County, TN, Moore County, TN, Morgan County, TN, Overton County, TN, Perry County, TN, Pickett County, TN, Polk County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Robertson County, TN, Rutherford County, TN, Scott County, TN, Sequatchie County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, Wayne County, TN, White County, TN, Williamson County, TN, Wilson County, TN
The radar
The Nashville radar (KOHX), 44 km from the middle of the area, began a volume at 16:29 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, 4.5 hours before the alert went out and 37 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.
- Mixed-layer CAPE
- 477 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 995 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- -19 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 11:45 AM CDT | Severe Thunderstorm Watch | SPC | DeKalb, Jackson, Lauderdale, Lawrence, Limestone, Madison and 2 more | 6 hr |
| Jul 1, 3:04 PM CDT | Mesoscale Discussion | SPC | Blount, Calhoun, Cherokee, Cleburne, Cullman, DeKalb and 7 more | 116 min |
| Jul 1, 5:20 PM CDT | Mesoscale Discussion | SPC | Blount, Calhoun, Cherokee, Clay, Cleburne, Etowah and 7 more | 55 min |
Nearby
Mesoscale Discussions in Tennessee, 2015Mesoscale Discussions in Kentucky, 2015Mesoscale Discussions in Alabama, 2015Every 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.