Alert archive / Tennessee / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 151, NWS Nashville, TN

December 6, 2021Coffee County, Grundy County, Warren County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Dec 6, 2021, 7:59 AM CST for Coffee County, Grundy County, Warren County, Tennessee. It was in force for 31 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
Dec 6, 2021, 7:59 AM CST (13:59 UTC)
Expired
Dec 6, 2021, 8:30 AM CST
In force
31 min
Issued by
NWS Nashville, TN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Coffee County, TN, Grundy County, TN, Warren County, TN

The radar

The Northeast Alabama radar (KHTX), 66 km from the middle of the area, began a volume at 14:01 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

Nashville Metro, TN (KBNA), launched 12:00Z, 2.0 hours before the alert went out and 116 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.

Skew-T log-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2021-12-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 250 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2021-12-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 509 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
250 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
665 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
509 m²/s²
0-3 km storm-relative helicity
600 m²/s²
Significant tornado parameter
1.0
Supercell composite
3.8

Open this sounding in Storm Lab

The text

As transmitted.

202 
WUUS54 KOHX 061359
SVROHX
TNC031-061-177-061430-
/O.NEW.KOHX.SV.W.0151.211206T1359Z-211206T1430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Nashville TN
759 AM CST Mon Dec 6 2021

The National Weather Service in Nashville has issued a

* Severe Thunderstorm Warning for...
  Southern Warren County in Middle Tennessee...
  Southeastern Coffee County in Middle Tennessee...
  Grundy County in Middle Tennessee...

* Until 830 AM CST.

* At 759 AM CST, a severe thunderstorm was located near Manchester,
  moving east at 55 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Manchester, Gruetli-Laager, Altamont, Coalmont, Palmer, Beersheba
  Springs, Viola, Hillsboro, Summitville and Arnold AFB.

This includes Interstate 24 between mile markers 108 and 124.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3534 8596 3534 8603 3536 8611 3559 8613
      3559 8558 3553 8556 3553 8561 3549 8554
      3543 8554 3542 8551 3541 8551 3541 8549
      3539 8550 3538 8549 3536 8551 3534 8554
      3532 8556 3531 8560
TIME...MOT...LOC 1359Z 269DEG 48KT 3546 8600 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

10
1 follow-up statement
472 
WWUS54 KOHX 061416
SVSOHX

Severe Weather Statement
National Weather Service Nashville TN
816 AM CST Mon Dec 6 2021

TNC031-061425-
/O.CAN.KOHX.SV.W.0151.000000T0000Z-211206T1430Z/
Coffee TN-
816 AM CST Mon Dec 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN COFFEE COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3534 8589 3537 8587 3538 8587 3538 8589
      3540 8589 3547 8587 3559 8582 3559 8558
      3553 8556 3553 8561 3549 8554 3543 8554
      3542 8551 3541 8551 3541 8549 3537 8550
      3532 8556 3531 8560
TIME...MOT...LOC 1415Z 269DEG 48KT 3546 8573 

$$

TNC061-177-061430-
/O.CON.KOHX.SV.W.0151.000000T0000Z-211206T1430Z/
Warren TN-Grundy TN-
816 AM CST Mon Dec 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 AM CST
FOR SOUTHEASTERN WARREN AND GRUNDY COUNTIES...

At 815 AM CST, a severe thunderstorm was located 8 miles northwest of
Gruetli-Laager, or 15 miles south of McMinnville, moving east at 55
mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Gruetli-Laager, Altamont, Coalmont, Palmer and Beersheba Springs. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3534 8589 3537 8587 3538 8587 3538 8589
      3540 8589 3547 8587 3559 8582 3559 8558
      3553 8556 3553 8561 3549 8554 3543 8554
      3542 8551 3541 8551 3541 8549 3537 8550
      3532 8556 3531 8560
TIME...MOT...LOC 1415Z 269DEG 48KT 3546 8573 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

10

The office that day

Everything else NWS Nashville, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 5, 6:25 PM CSTSpecial Weather StatementOHXHickman35 min
Dec 6, 12:53 AM CSTSpecial Weather StatementOHXStewart52 min
Dec 6, 3:54 AM CSTSevere Thunderstorm WarningOHXHouston, Montgomery, Stewart51 min
Dec 6, 4:14 AM CSTTornado WarningOHXStewart16 min
Dec 6, 4:39 AM CSTSevere Thunderstorm WarningOHXCheatham, Dickson, Houston, Montgomery, Robertson41 min
Dec 6, 4:51 AM CSTTornado WarningOHXMontgomery, Robertson12 min
Dec 6, 5:09 AM CSTSevere Thunderstorm WarningOHXCheatham, Davidson, Dickson, Robertson, Sumner, Wilson36 min
Dec 6, 5:16 AM CSTSpecial Weather StatementOHXDickson, Hickman, Perry59 min
Dec 6, 5:46 AM CSTSpecial Weather StatementOHXMacon, Smith, Sumner, Trousdale, Wilson44 min
Dec 6, 6:02 AM CSTSevere Thunderstorm WarningOHXClay, Jackson, Macon, Smith, Trousdale, Wilson43 min
Dec 6, 6:03 AM CSTTornado WarningOHXMacon, Smith, Trousdale27 min
Dec 6, 6:32 AM CSTSevere Thunderstorm WarningOHXGiles, Lawrence, Wayne58 min
Dec 6, 6:38 AM CSTSevere Thunderstorm WarningOHXClay, Fentress, Jackson, Overton, Pickett, Putnam and 1 more37 min
Dec 6, 6:40 AM CSTTornado WarningOHXGiles, Lawrence35 min
Dec 6, 6:56 AM CSTTornado WarningOHXClay, Overton, Pickett19 min
Dec 6, 7:11 AM CSTSevere Thunderstorm WarningOHXCumberland, Fentress, Overton, Pickett, Putnam49 min
Dec 6, 7:15 AM CSTTornado WarningOHXFentress, Pickett30 min
Dec 6, 7:21 AM CSTSevere Thunderstorm WarningOHXBedford, Coffee, Giles, Marshall39 min
Dec 6, 7:40 AM CSTTornado WarningOHXBedford, Coffee21 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.