Alert archive / Tennessee / Tornado Watches in 2025
Tornado Watch 82
The Storm Prediction Center issued this tornado watch at Mar 31, 2025, 1:40 AM EDT for 22 counties in Tennessee. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 31, 2025, 1:40 AM EDT (05:40 UTC)
- Expired
- Mar 31, 2025, 5:46 AM EDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 22 counties
Anderson County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Claiborne County, TN, Grainger County, TN, Hamilton County, TN, Hancock County, TN, Knox County, TN, Loudon County, TN, Marion County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Morgan County, TN, Polk County, TN, Rhea County, TN, Roane County, TN, Scott County, TN, Sequatchie County, TN, Union County, TN
The radar
The Knoxville radar (KMRX), 76 km from the middle of the area, began a volume at 05:43 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 2:49 AM EDT | Severe Thunderstorm Warning | MRX | Bledsoe | 41 min |
| Mar 31, 3:15 AM EDT | Severe Thunderstorm Warning | MRX | Rhea, Roane | 30 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 5.7 hours before the alert went out and 218 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
- 823 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 740 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 208 m²/s²
- 0-3 km storm-relative helicity
- 240 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 6.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 9:02 PM EDT | Mesoscale Discussion | SPC | Benton, Carroll, Cheatham, Chester, Clay, Crockett and 39 more | 118 min |
| Mar 30, 9:32 PM EDT | Tornado Watch | SPC | Bedford, Benton, Cannon, Carroll, Cheatham, Chester and 42 more | 6 hr |
| Mar 30, 11:33 PM EDT | Mesoscale Discussion | SPC | Benton, Carroll, Cheatham, Chester, Davidson, Decatur and 18 more | 57 min |
| Mar 31, 12:05 AM EDT | Tornado Watch | SPC | Franklin, Lincoln, Moore | 6 hr |
| Mar 31, 12:29 AM EDT | Mesoscale Discussion | SPC | Anderson, Bledsoe, Blount, Bradley, Campbell, Cannon and 34 more | 46 min |
| Mar 31, 3:21 AM EDT | Mesoscale Discussion | SPC | Bedford, Bledsoe, Bradley, Coffee, Cumberland, Franklin and 19 more | 114 min |
Nearby
Tornado Watches in Tennessee, 2025Every tornado watch in 2025
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.