Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 82, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Jun 28, 2021, 4:21 PM EDT for McMinn County, Monroe County, Tennessee. It was in force for 39 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
- Jun 28, 2021, 4:21 PM EDT (20:21 UTC)
- Expired
- Jun 28, 2021, 5:00 PM EDT
- In force
- 39 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties McMinn County, TN, Monroe County, TN
The radar
The Knoxville radar (KMRX), 114 km from the middle of the area, began a volume at 20:20 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 |
|---|---|---|---|
| Jun 28, 4:40 PM EDT | TSTM WND DMG | 4 Ne Mount Vernon, TN | SEVERAL TREES DOWN. |
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, 8.4 hours before the alert went out and 203 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
- 78 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 1282 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -38 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
201
WUUS54 KMRX 282021
SVRMRX
TNC107-123-282100-
/O.NEW.KMRX.SV.W.0082.210628T2021Z-210628T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Morristown TN
421 PM EDT Mon Jun 28 2021
The National Weather Service in Morristown has issued a
* Severe Thunderstorm Warning for...
Northeastern McMinn County in east Tennessee...
Western Monroe County in east Tennessee...
* Until 500 PM EDT.
* At 420 PM EDT, a severe thunderstorm was located 8 miles southeast
of Madisonville, moving northwest at 15 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Athens, Sweetwater, Madisonville, Englewood, Tellico Plains, Niota,
Philadelphia and Mount Vernon.
This includes Interstate 75 in Tennessee between mile markers 50 and
66.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3548 8464 3561 8452 3562 8452 3562 8450
3563 8451 3566 8448 3566 8446 3567 8443
3566 8442 3567 8441 3564 8440 3564 8438
3545 8414 3531 8427
TIME...MOT...LOC 2020Z 126DEG 14KT 3543 8428
HAIL...0.75IN
WIND...60MPH
$$
DH1 follow-up statement
477
WWUS54 KMRX 282039
SVSMRX
Severe Weather Statement
National Weather Service Morristown TN
439 PM EDT Mon Jun 28 2021
TNC107-123-282100-
/O.CON.KMRX.SV.W.0082.000000T0000Z-210628T2100Z/
McMinn TN-Monroe TN-
439 PM EDT Mon Jun 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR NORTHEASTERN MCMINN AND NORTHWESTERN MONROE COUNTIES...
At 439 PM EDT, a severe thunderstorm was located near Madisonville,
moving northwest at 15 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Athens, Sweetwater, Madisonville, Englewood, Tellico Plains, Niota,
Philadelphia and Mount Vernon.
This includes Interstate 75 in Tennessee between mile markers 50 and
66.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3548 8464 3561 8452 3562 8452 3562 8450
3563 8451 3566 8448 3566 8446 3567 8443
3566 8442 3567 8441 3564 8440 3564 8438
3545 8414 3535 8428
TIME...MOT...LOC 2039Z 136DEG 13KT 3548 8428
HAIL...0.75IN
WIND...60MPH
$$
DHThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 3:33 PM EDT | Special Weather Statement | MRX | Cocke | 42 min |
| Jun 28, 4:11 PM EDT | Special Weather Statement | MRX | Monroe | 49 min |
| Jun 28, 4:57 PM EDT | Special Weather Statement | MRX | Monroe | 63 min |
| Jun 28, 5:19 PM EDT | Special Weather Statement | MRX | Roane | 41 min |
| Jun 28, 6:06 PM EDT | Special Weather Statement | MRX | Knox | 39 min |
| Jun 28, 6:11 PM EDT | Severe Thunderstorm Warning | MRX | Claiborne, Grainger, Union | 49 min |
| Jun 28, 6:34 PM EDT | Severe Thunderstorm Warning | MRX | Union | 41 min |
| Jun 28, 6:53 PM EDT | Special Weather Statement | MRX | Claiborne | 52 min |
| Jun 28, 6:57 PM EDT | Severe Thunderstorm Warning | MRX | Anderson, Campbell, Knox, Union | 48 min |
| Jun 28, 7:14 PM EDT | Special Weather Statement | MRX | Campbell | 46 min |
| Jun 28, 7:44 PM EDT | Special Weather Statement | MRX | Anderson, Campbell | 61 min |
| Jun 28, 7:53 PM EDT | Severe Thunderstorm Warning | MRX | Campbell, Scott | 52 min |
Nearby
Severe Thunderstorm Warnings in Tennessee, 2021Every severe thunderstorm warning 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.