Alert archive / Tennessee / Tornado Warnings in 2021
Tornado Warning 63, NWS Nashville, TN
NWS Nashville, TN issued this tornado warning at Dec 11, 2021, 7:35 AM CST for Grundy County, Tennessee. It was in force for 25 min. 2 reports 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
- Dec 11, 2021, 7:35 AM CST (13:35 UTC)
- Expired
- Dec 11, 2021, 8:00 AM CST
- In force
- 25 min
- Issued by
- NWS Nashville, TN
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Grundy County, TN
The radar
The Northeast Alabama radar (KHTX), 63 km from the middle of the area, began a volume at 13:36 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 |
|---|---|---|---|
| Dec 11, 7:36 AM CST | TORNADO | 1 N Coalmont, TN | THE TORNADO TOUCHED DOWN IN COALMONT AND QUICKLY PRODUCED 90 MPH WINDS THAT UPROOTED MANY TREES ON FREEMONT ROAD. IT MOVED NORTHEAST AND BLEW OUT THE WALLS OF A METAL BUILDING STRUCTURE AND DOWNED ADDITIONAL TREES ON 20TH AVENUE SOUTH NEAR HIGHWAY 108. THE TOR |
| Dec 11, 7:39 AM CST | TSTM WND DMG | 1 Ne Coalmont, TN | TREES DOWN NEAR COALMONT IN GRUNDY COUNTY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Dec 11, 3:41 AM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 1.6 hours before the alert went out and 244 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
- 182 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 625 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 268 m²/s²
- 0-3 km storm-relative helicity
- 271 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.8
The text
As transmitted.
602
WFUS54 KOHX 111335
TOROHX
TNC061-111400-
/O.NEW.KOHX.TO.W.0063.211211T1335Z-211211T1400Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Nashville TN
735 AM CST Sat Dec 11 2021
The National Weather Service in Nashville has issued a
* Tornado Warning for...
Central Grundy County in Middle Tennessee...
* Until 800 AM CST.
* At 735 AM CST, a severe thunderstorm capable of producing a tornado
was located near Tracy City, or 19 miles northwest of Jasper,
moving northeast at 50 mph.
HAZARD...Tornado.
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 dangerous storm will be near...
Gruetli-Laager around 745 AM CST.
Other locations impacted by this tornadic thunderstorm include
Coalmont, Palmer, Beersheba Springs and Altamont.
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 3526 8582 3535 8586 3550 8555 3549 8554
3543 8554 3542 8551 3541 8551 3541 8549
3536 8551 3534 8554 3532 8556 3530 8564
3530 8566 3529 8569 3529 8571 3528 8571
TIME...MOT...LOC 1335Z 246DEG 45KT 3533 8576
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
102 follow-up statements
017
WWUS54 KOHX 111343
SVSOHX
Severe Weather Statement
National Weather Service Nashville TN
743 AM CST Sat Dec 11 2021
TNC061-111400-
/O.CON.KOHX.TO.W.0063.000000T0000Z-211211T1400Z/
Grundy TN-
743 AM CST Sat Dec 11 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 AM CST FOR
NORTHEASTERN GRUNDY COUNTY...
At 743 AM CST, a severe thunderstorm capable of producing a tornado
was located over Gruetli-Laager, or 14 miles west of Dunlap, moving
northeast at 50 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
northeastern Grundy County, including the following locations...
Palmer and Coalmont.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 3534 8569 3538 8572 3550 8555 3549 8554
3543 8554 3542 8551 3541 8551 3539 8553
3538 8555 3536 8558 3534 8564
TIME...MOT...LOC 1343Z 246DEG 45KT 3537 8564
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
10479
WWUS54 KOHX 111354
SVSOHX
Severe Weather Statement
National Weather Service Nashville TN
754 AM CST Sat Dec 11 2021
TNC061-111403-
/O.EXP.KOHX.TO.W.0063.000000T0000Z-211211T1400Z/
Grundy TN-
754 AM CST Sat Dec 11 2021
...THE TORNADO WARNING FOR NORTHEASTERN GRUNDY COUNTY WILL EXPIRE AT
800 AM CST...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Tornado Watch remains in effect until 1100 AM CST for Middle
Tennessee.
LAT...LON 3534 8569 3538 8572 3550 8555 3549 8554
3543 8554 3542 8551 3541 8551 3539 8553
3538 8555 3536 8558 3534 8564
TIME...MOT...LOC 1353Z 246DEG 45KT 3541 8552
$$
10The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 10, 11:29 PM CST | Tornado Warning | OHX | Stewart | 46 min |
| Dec 11, 12:03 AM CST | Tornado Warning | OHX | Montgomery, Stewart | 16 min |
| Dec 11, 12:19 AM CST | Severe Thunderstorm Warning | OHX | Montgomery, Stewart | 41 min |
| Dec 11, 1:28 AM CST | Severe Thunderstorm Warning | OHX | Stewart | 21 min |
| Dec 11, 1:47 AM CST | Severe Thunderstorm Warning | OHX | Dickson, Hickman, Houston, Humphreys, Lewis, Montgomery and 2 more | 73 min |
| Dec 11, 2:03 AM CST | Tornado Warning | OHX | Houston, Humphreys, Stewart | 27 min |
| Dec 11, 2:07 AM CST | Tornado Warning | OHX | Dickson, Hickman, Humphreys, Perry | 38 min |
| Dec 11, 2:23 AM CST | Tornado Warning | OHX | Dickson, Houston, Montgomery, Stewart | 37 min |
| Dec 11, 2:38 AM CST | Tornado Warning | OHX | Dickson, Hickman, Humphreys | 37 min |
| Dec 11, 2:39 AM CST | Tornado Warning | OHX | Cheatham, Dickson, Montgomery | 14 min |
| Dec 11, 2:47 AM CST | Severe Thunderstorm Warning | OHX | Cheatham, Davidson, Dickson, Hickman, Lewis, Maury and 5 more | 58 min |
| Dec 11, 2:58 AM CST | Tornado Warning | OHX | Cheatham, Davidson, Dickson, Williamson | 32 min |
| Dec 11, 2:59 AM CST | Tornado Warning | OHX | Davidson, Williamson | 31 min |
| Dec 11, 3:19 AM CST | Severe Thunderstorm Warning | OHX | Davidson, Hickman, Lewis, Marshall, Maury, Robertson and 5 more | 41 min |
| Dec 11, 3:21 AM CST | Tornado Warning | OHX | Davidson, Sumner, Wilson | 39 min |
| Dec 11, 3:29 AM CST | Severe Thunderstorm Warning | OHX | Davidson, Rutherford, Smith, Sumner, Trousdale, Williamson and 1 more | 46 min |
| Dec 11, 3:33 AM CST | Tornado Warning | OHX | Davidson, Macon, Smith, Sumner, Trousdale, Wilson | 42 min |
| Dec 11, 3:46 AM CST | Tornado Warning | OHX | Clay, Macon, Sumner, Trousdale | 44 min |
| Dec 11, 3:48 AM CST | Severe Thunderstorm Warning | OHX | Lewis, Perry, Wayne | 42 min |
| Dec 11, 3:50 AM CST | Severe Thunderstorm Warning | OHX | Clay, DeKalb, Jackson, Macon, Putnam, Smith and 3 more | 17 min |
| Dec 11, 3:56 AM CST | Tornado Warning | OHX | Lewis, Perry, Wayne | 13 min |
| Dec 11, 4:07 AM CST | Tornado Warning | OHX | Clay, Jackson, Macon, Overton, Smith, Trousdale | 38 min |
| Dec 11, 4:11 AM CST | Severe Thunderstorm Warning | OHX | Clay, Fentress, Jackson, Macon, Overton, Pickett and 4 more | 34 min |
| Dec 11, 4:33 AM CST | Tornado Warning | OHX | Clay, Fentress, Overton, Pickett | 42 min |
| Dec 11, 5:01 AM CST | Severe Thunderstorm Warning | OHX | Giles, Lawrence, Lewis, Marshall, Maury | 29 min |
| Dec 11, 5:21 AM CST | Severe Thunderstorm Warning | OHX | Overton, Putnam | 27 min |
| Dec 11, 5:39 AM CST | Severe Thunderstorm Warning | OHX | Giles, Lawrence, Wayne | 36 min |
| Dec 11, 5:56 AM CST | Severe Thunderstorm Warning | OHX | Giles, Lawrence, Marshall, Maury | 34 min |
| Dec 11, 6:13 AM CST | Tornado Warning | OHX | Giles | 15 min |
| Dec 11, 6:58 AM CST | Severe Thunderstorm Warning | OHX | Bedford, Coffee, Grundy, Warren | 32 min |
| Dec 11, 7:22 AM CST | Severe Thunderstorm Warning | OHX | Coffee, Grundy | 38 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.