Alert archive / Tennessee / Tornado Warnings in 2021
Tornado Warning 5, NWS Morristown, TN
NWS Morristown, TN issued this tornado warning at Apr 8, 2021, 6:22 PM EDT for Campbell County, Claiborne County, Scott County, Tennessee. It was in force for 53 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 8, 2021, 6:22 PM EDT (22:22 UTC)
- Expired
- Apr 8, 2021, 7:15 PM EDT
- In force
- 53 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.25 in
Counties Campbell County, TN, Claiborne County, TN, Scott County, TN
The radar
The Knoxville radar (KMRX), 68 km from the middle of the area, began a volume at 22:24 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 8, 7:15 PM EDT | HAIL 1.75 | 1 Sw Duff, TN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 10.4 hours before the alert went out and 233 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
- 55 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 626 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 354 m²/s²
- 0-3 km storm-relative helicity
- 375 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
714
WFUS54 KMRX 082222
TORMRX
TNC013-025-151-082315-
/O.NEW.KMRX.TO.W.0005.210408T2222Z-210408T2315Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Morristown TN
622 PM EDT Thu Apr 8 2021
The National Weather Service in Morristown has issued a
* Tornado Warning for...
Northwestern Claiborne County in east Tennessee...
Northern Campbell County in east Tennessee...
East central Scott County in east Tennessee...
* Until 715 PM EDT.
* At 622 PM EDT, a severe thunderstorm capable of producing a tornado
was located 8 miles northwest of Jacksboro, or 11 miles west of La
Follette, moving northeast at 40 mph.
HAZARD...Tornado and half dollar size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This tornadic thunderstorm will remain over mainly rural areas of
northwestern Claiborne, northern Campbell and east central Scott
Counties, including the following locations... Jellico, Elk Valley,
Indian Mountain State Park, Clairfield, Royal Blue, White Oak,
Norma and Caryville.
This includes Interstate 75 in Tennessee between mile markers 141 and
161.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3658 8376 3654 8372 3632 8438 3642 8445
3659 8418
TIME...MOT...LOC 2222Z 233DEG 35KT 3640 8433
TORNADO...RADAR INDICATED
HAIL...1.25IN
$$
DH2 follow-up statements
020
WWUS54 KMRX 082235
SVSMRX
Severe Weather Statement
National Weather Service Morristown TN
635 PM EDT Thu Apr 8 2021
TNC151-082244-
/O.CAN.KMRX.TO.W.0005.000000T0000Z-210408T2315Z/
Scott TN-
635 PM EDT Thu Apr 8 2021
...THE TORNADO WARNING FOR EAST CENTRAL SCOTT COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the tornado warning has been
cancelled.
LAT...LON 3658 8376 3636 8427 3646 8435 3647 8435
3647 8434 3648 8433 3651 8429 3650 8428
3651 8426 3653 8426 3654 8425 3659 8418
TIME...MOT...LOC 2234Z 233DEG 35KT 3648 8421
$$
TNC013-025-082315-
/O.CON.KMRX.TO.W.0005.000000T0000Z-210408T2315Z/
Claiborne TN-Campbell TN-
635 PM EDT Thu Apr 8 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM EDT FOR
NORTHWESTERN CLAIBORNE AND NORTHERN CAMPBELL COUNTIES...
At 634 PM EDT, a severe thunderstorm capable of producing a tornado
was located 8 miles northwest of La Follette, moving northeast at 40
mph.
HAZARD...Tornado and half dollar size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Jellico, Caryville, Elk Valley, Indian Mountain State Park,
Clairfield, Royal Blue and White Oak.
This includes Interstate 75 in Tennessee between mile markers 141 and
161.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3658 8376 3636 8427 3646 8435 3647 8435
3647 8434 3648 8433 3651 8429 3650 8428
3651 8426 3653 8426 3654 8425 3659 8418
TIME...MOT...LOC 2234Z 233DEG 35KT 3648 8421
TORNADO...RADAR INDICATED
HAIL...1.25IN
$$
DH973
WWUS54 KMRX 082257
SVSMRX
Severe Weather Statement
National Weather Service Morristown TN
657 PM EDT Thu Apr 8 2021
TNC013-025-082315-
/O.CON.KMRX.TO.W.0005.000000T0000Z-210408T2315Z/
Claiborne TN-Campbell TN-
657 PM EDT Thu Apr 8 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 PM EDT FOR
NORTHWESTERN CLAIBORNE AND NORTHEASTERN CAMPBELL COUNTIES...
At 657 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Wilkerson, or 13 miles southeast of Williamsburg,
moving northeast at 40 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Jellico, White Oak and Clairfield.
This includes Interstate 75 in Tennessee between mile markers 158 and
161.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3658 8376 3650 8406 3654 8414 3655 8415
3659 8411
TIME...MOT...LOC 2257Z 233DEG 35KT 3662 8398
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
DGSThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 3:58 AM EDT | Wind Advisory | MRX | Blount, Carter, Cocke, Greene, Johnson, Monroe and 2 more | 19 hr |
| Apr 8, 4:47 PM EDT | Tornado Warning | MRX | Morgan, Scott | 43 min |
| Apr 8, 5:21 PM EDT | Severe Thunderstorm Warning | MRX | Campbell, Morgan, Scott | 39 min |
| Apr 8, 5:25 PM EDT | Tornado Warning | MRX | Campbell, Morgan, Scott | 35 min |
| Apr 8, 5:51 PM EDT | Tornado Warning | MRX | Campbell, Scott | 39 min |
| Apr 8, 5:56 PM EDT | Tornado Warning | MRX | Scott | 34 min |
| Apr 8, 6:16 PM EDT | Severe Thunderstorm Warning | MRX | Campbell, Scott | 44 min |
| Apr 8, 6:44 PM EDT | Tornado Warning | MRX | Campbell, Scott | 46 min |
| Apr 8, 6:50 PM EDT | Severe Thunderstorm Warning | MRX | Campbell, Claiborne | 40 min |
| Apr 8, 6:52 PM EDT | Tornado Warning | MRX | Campbell, Claiborne, Scott | 38 min |
| Apr 8, 7:24 PM EDT | Severe Thunderstorm Warning | MRX | Campbell, Claiborne | 36 min |
Nearby
Tornado Warnings in Tennessee, 2021Every tornado warning in 2021Tornadoes in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.