Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 124, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Aug 14, 2021, 7:48 PM EDT for Monroe County, Tennessee. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 14, 2021, 7:48 PM EDT (23:48 UTC)
- Expired
- Aug 14, 2021, 8:15 PM EDT
- In force
- 27 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Monroe County, TN
The radar
The Knoxville radar (KMRX), 118 km from the middle of the area, began a volume at 23:52 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 nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.8 hours before the alert went out and 223 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
- 1490 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 1011 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -48 m²/s²
- 0-3 km storm-relative helicity
- -11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
688
WUUS54 KMRX 142348
SVRMRX
TNC123-150015-
/O.NEW.KMRX.SV.W.0124.210814T2348Z-210815T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Morristown TN
748 PM EDT Sat Aug 14 2021
The National Weather Service in Morristown has issued a
* Severe Thunderstorm Warning for...
Central Monroe County in east Tennessee...
* Until 815 PM EDT.
* At 748 PM EDT, a severe thunderstorm was located 13 miles south of
Madisonville, moving north at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Madisonville, Tellico Plains, Tariffville and Mount Vernon.
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 3527 8423 3531 8437 3551 8438 3548 8410
TIME...MOT...LOC 2348Z 192DEG 11KT 3534 8428
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Garuckas2 follow-up statements
062
WWUS54 KMRX 150000
SVSMRX
Severe Weather Statement
National Weather Service Morristown TN
800 PM EDT Sat Aug 14 2021
TNC123-150015-
/O.CON.KMRX.SV.W.0124.000000T0000Z-210815T0015Z/
Monroe TN-
800 PM EDT Sat Aug 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR CENTRAL MONROE COUNTY...
At 800 PM EDT, a severe thunderstorm was located 11 miles southeast
of Madisonville, moving north at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Madisonville, Tellico Plains, Tariffville and Mount Vernon.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3529 8423 3531 8437 3551 8438 3548 8410
TIME...MOT...LOC 0000Z 192DEG 11KT 3538 8427
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Garuckas241
WWUS54 KMRX 150009
SVSMRX
Severe Weather Statement
National Weather Service Morristown TN
809 PM EDT Sat Aug 14 2021
TNC123-150019-
/O.EXP.KMRX.SV.W.0124.000000T0000Z-210815T0015Z/
Monroe TN-
809 PM EDT Sat Aug 14 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MONROE COUNTY WILL
EXPIRE AT 815 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.
LAT...LON 3529 8423 3531 8437 3551 8438 3548 8410
TIME...MOT...LOC 0009Z 192DEG 11KT 3539 8427
$$
GaruckasThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 8:00 PM EDT | Severe Thunderstorm Warning | MRX | Cocke, Jefferson, Sevier | 45 min |
| Aug 13, 8:32 PM EDT | Severe Thunderstorm Warning | MRX | Cocke, Greene | 29 min |
| Aug 13, 8:44 PM EDT | Special Weather Statement | MRX | Hawkins | 46 min |
| Aug 13, 9:23 PM EDT | Severe Thunderstorm Warning | MRX | Hawkins, Sullivan | 52 min |
| Aug 13, 10:19 PM EDT | Areal Flood Advisory | MRX | Hawkins, Sullivan | 116 min |
| Aug 14, 2:44 PM EDT | Special Weather Statement | MRX | Scott | 46 min |
| Aug 14, 3:38 PM EDT | Special Weather Statement | MRX | Campbell | 37 min |
| Aug 14, 5:48 PM EDT | Special Weather Statement | MRX | Rhea | 27 min |
| Aug 14, 5:57 PM EDT | Severe Thunderstorm Warning | MRX | Johnson, Sullivan | 33 min |
| Aug 14, 6:07 PM EDT | Special Weather Statement | MRX | Sequatchie | 38 min |
| Aug 14, 6:27 PM EDT | Special Weather Statement | MRX | Claiborne | 48 min |
| Aug 14, 6:31 PM EDT | Special Weather Statement | MRX | Claiborne | 44 min |
| Aug 14, 6:38 PM EDT | Severe Thunderstorm Warning | MRX | Claiborne, Union | 37 min |
| Aug 14, 6:43 PM EDT | Special Weather Statement | MRX | Hancock | 47 min |
| Aug 14, 6:53 PM EDT | Severe Thunderstorm Warning | MRX | Claiborne | 37 min |
| Aug 14, 7:03 PM EDT | Special Weather Statement | MRX | Grainger | 42 min |
| Aug 14, 7:24 PM EDT | Special Weather Statement | MRX | Knox | 51 min |
| Aug 14, 7:33 PM EDT | Special Weather Statement | MRX | Bradley | 27 min |
| Aug 14, 7:41 PM EDT | Special Weather Statement | MRX | Blount | 49 min |
| Aug 14, 7:57 PM EDT | Severe Thunderstorm Warning | MRX | Knox, Sevier | 33 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.