Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 92, NWS Morristown, TN
NWS Morristown, TN issued this severe thunderstorm warning at Aug 1, 2021, 12:10 AM CDT for Bledsoe County, Marion County, Sequatchie County, Tennessee. It was in force for 65 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 1, 2021, 12:10 AM CDT (05:10 UTC)
- Expired
- Aug 1, 2021, 1:15 AM CDT
- In force
- 65 min
- Issued by
- NWS Morristown, TN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Bledsoe County, TN, Marion County, TN, Sequatchie County, TN
The radar
The Northeast Alabama radar (KHTX), 64 km from the middle of the area, began a volume at 05:12 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 31, 11:29 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 5.2 hours before the alert went out and 129 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
- 1106 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1447 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 251 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 5.3
The text
As transmitted.
021
WUUS54 KMRX 010510
SVRMRX
TNC007-115-153-010615-
/O.NEW.KMRX.SV.W.0092.210801T0510Z-210801T0615Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Morristown TN
1210 AM CDT Sun Aug 1 2021
The National Weather Service in Morristown has issued a
* Severe Thunderstorm Warning for...
Sequatchie County in east Tennessee...
Bledsoe County in east Tennessee...
Marion County in east Tennessee...
* Until 115 AM CDT.
* At 1209 AM CDT, severe thunderstorms were located along a line
extending from near McMinnville to near Tims Ford Lake, moving east
at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Dunlap, Jasper, Pikeville, Signal Mountain, South Pittsburg,
Whitwell, Kimball, Monteagle, Fairmount and Powells Crossroads.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3524 8582 3522 8574 3524 8569 3529 8571
3532 8557 3538 8549 3541 8549 3543 8554
3549 8554 3553 8560 3554 8556 3555 8546
3569 8529 3565 8505 3529 8527 3515 8538
3499 8546 3499 8586 3500 8586 3522 8587
TIME...MOT...LOC 0509Z 288DEG 35KT 3572 8585 3521 8616
HAIL...<.75IN
WIND...60MPH
$$1 follow-up statement
251
WWUS54 KMRX 010532
SVSMRX
Severe Weather Statement
National Weather Service Morristown TN
1232 AM CDT Sun Aug 1 2021
TNC007-115-153-010615-
/O.CON.KMRX.SV.W.0092.000000T0000Z-210801T0615Z/
Sequatchie TN-Bledsoe TN-Marion TN-
1232 AM CDT Sun Aug 1 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM CDT
FOR SEQUATCHIE...BLEDSOE AND MARION COUNTIES...
At 1231 AM CDT, severe thunderstorms were located along a line
extending from 10 miles south of Spencer to near Cowan, moving east
at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Dunlap, Jasper, Pikeville, Signal Mountain, South Pittsburg,
Whitwell, Kimball, Monteagle, Fairmount and Powells Crossroads.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3524 8582 3522 8574 3524 8569 3529 8571
3532 8557 3538 8549 3541 8549 3543 8554
3549 8554 3553 8560 3554 8556 3555 8546
3569 8529 3565 8505 3529 8527 3515 8538
3499 8546 3499 8586 3500 8586 3522 8587
TIME...MOT...LOC 0531Z 291DEG 37KT 3559 8551 3510 8596
HAIL...<.75IN
WIND...60MPH
$$The office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 12:30 AM CDT | Special Weather Statement | MRX | Meigs, Rhea | 30 min |
| Aug 1, 12:40 AM CDT | Special Weather Statement | MRX | Loudon, Monroe | 50 min |
| Aug 1, 1:06 AM CDT | Special Weather Statement | MRX | Bradley, Hamilton, Meigs, Rhea | 39 min |
| Aug 1, 1:10 AM CDT | Severe Thunderstorm Warning | MRX | Blount, Loudon, Monroe | 65 min |
| Aug 1, 3:44 AM CDT | Special Weather Statement | MRX | Johnson | 31 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.