Alert archive / Tennessee / Mesoscale Discussions in 2022

Mesoscale Discussion 365

March 30, 20224 counties in Alabama; 6 counties in Kentucky; 31 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at Mar 30, 2022, 7:56 PM CDT for 4 counties in Alabama; 6 counties in Kentucky; 31 counties in Tennessee. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued
Mar 30, 2022, 7:56 PM CDT (00:56 UTC)
Expired
Mar 30, 2022, 9:30 PM CDT
In force
94 min
Issued by
the Storm Prediction Center
Concerning
Tornado watch 80
All 41 counties

Colbert County, AL, Lauderdale County, AL, Limestone County, AL, Madison County, AL, Allen County, KY, Christian County, KY, Logan County, KY, Simpson County, KY, Todd County, KY, Trigg County, KY, Bedford County, TN, Cannon County, TN, Cheatham County, TN, Coffee County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Franklin County, TN, Giles County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Macon County, TN, Marshall County, TN, Maury County, TN, Montgomery County, TN, Moore County, TN, Perry County, TN, Robertson County, TN, Rutherford County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Warren County, TN, Wayne County, TN, Williamson County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 87 km from the middle of the area, began a volume at 00:59 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 00:00Z, 0.9 hours before the alert went out and 78 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 00:00Z on 2022-03-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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 00:00Z on 2022-03-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 427 square meters per square second.1939587897Sfc1 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
1 J/kg
Mixed-layer CIN
-135 J/kg
Mixed-layer LCL
2181 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
427 m²/s²
0-3 km storm-relative helicity
722 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
Mar 30, 8:33 PM CDTMesoscale DiscussionSPCGreene, Pickens, Sumter57 min
Mar 30, 8:44 PM CDTMesoscale DiscussionSPCBibb, Dallas, Perry2 hr
Mar 30, 8:50 PM CDTMesoscale DiscussionSPCChoctaw, Washington55 min
Mar 30, 9:57 PM CDTMesoscale DiscussionSPCBaldwin, Escambia, Mobile2 hr
Mar 30, 10:20 PM CDTMesoscale DiscussionSPCChilton, Shelby85 min
Mar 30, 11:26 PM CDTTornado WatchSPCBarbour, Bullock, Calhoun, Chambers, Cherokee, Clay and 12 more6 hr
Mar 30, 11:51 PM CDTMesoscale DiscussionSPCCovington, Escambia, Geneva114 min
Mar 31, 1:29 AM CDTMesoscale DiscussionSPCBarbour, Bullock, Chambers, Clay, Cleburne, Lee and 4 more2 hr
Mar 31, 3:54 AM CDTMesoscale DiscussionSPCHenry, Houston, Russell2 hr
Mar 30, 7:24 PM CDTMesoscale DiscussionSPCBreckinridge, Bullitt, Butler, Daviess, Edmonson, Grayson and 16 more96 min
Mar 30, 9:42 PM CDTMesoscale DiscussionSPCClinton, Cumberland, McCreary, Monroe, Russell, Wayne93 min
Mar 30, 11:01 PM CDTSevere Thunderstorm WatchSPCAnderson, Bledsoe, Bradley, Campbell, Cumberland, DeKalb and 20 more5 hr

Nearby

Mesoscale Discussions in Tennessee, 2022Mesoscale Discussions in Kentucky, 2022Mesoscale Discussions in Alabama, 2022Every mesoscale discussion in 2022

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.