Alert archive / Tennessee / Tornado Warnings in 2012
Tornado Warning 4, NWS Nashville, TN
NWS Nashville, TN issued this tornado warning at Jan 21, 2012, 12:40 AM CST for 4 counties in Tennessee. It was in force for 35 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
- Jan 21, 2012, 12:40 AM CST (06:40 UTC)
- Expired
- Jan 21, 2012, 1:15 AM CST
- In force
- 35 min
- Issued by
- NWS Nashville, TN
- Area
- Storm-based polygon
Counties Hickman County, TN, Lewis County, TN, Maury County, TN, Williamson County, TN
The radar
The Nashville radar (KOHX), 73 km from the middle of the area, began a volume at 06:40 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 |
|---|---|---|---|
| Jan 20, 10:35 PM CST | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 6.7 hours before the alert went out and 61 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 550 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 385 m²/s²
- 0-3 km storm-relative helicity
- 504 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
170
WFUS54 KOHX 210640
TOROHX
TNC081-101-119-187-210715-
/O.NEW.KOHX.TO.W.0004.120121T0640Z-120121T0715Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
1240 AM CST SAT JAN 21 2012
THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHEASTERN HICKMAN COUNTY IN MIDDLE TENNESSEE...
NORTHEASTERN LEWIS COUNTY IN MIDDLE TENNESSEE...
NORTHERN MAURY COUNTY IN MIDDLE TENNESSEE...
SOUTH CENTRAL WILLIAMSON COUNTY IN MIDDLE TENNESSEE...
* UNTIL 115 AM CST
* AT 1235 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 8 MILES SOUTH OF CENTERVILLE...AND MOVING EAST AT
45 MPH.
* THIS STORM WILL BE NEAR...
SPRING HILL AROUND 110 AM CST.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.
&&
LAT...LON 3577 8749 3590 8684 3570 8679 3569 8680
3570 8681 3568 8682 3559 8745
TIME...MOT...LOC 0640Z 258DEG 41KT 3570 8735
$$
ROSE2 follow-up statements
707 WWUS54 KOHX 210703 SVSOHX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NASHVILLE TN 103 AM CST SAT JAN 21 2012 TNC081-101-210713- /O.CAN.KOHX.TO.W.0004.000000T0000Z-120121T0715Z/ HICKMAN TN-LEWIS TN- 103 AM CST SAT JAN 21 2012 ...THE TORNADO WARNING FOR NORTHEASTERN LEWIS AND SOUTHEASTERN HICKMAN COUNTIES IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 3565 8715 3583 8719 3590 8684 3571 8679 TIME...MOT...LOC 0703Z 258DEG 41KT 3576 8705 $$ TNC119-187-210715- /O.CON.KOHX.TO.W.0004.000000T0000Z-120121T0715Z/ WILLIAMSON TN-MAURY TN- 103 AM CST SAT JAN 21 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN MAURY AND SOUTH CENTRAL WILLIAMSON COUNTIES UNTIL 115 AM CST... AT 1259 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 9 MILES NORTH OF COLUMBIA...MOVING EAST AT 45 MPH. THIS STORM WILL BE NEAR... SPRING HILL AROUND 110 AM CST. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW. && LAT...LON 3565 8715 3583 8719 3590 8684 3571 8679 TIME...MOT...LOC 0703Z 258DEG 41KT 3576 8705 $$ ROSE
080 WWUS54 KOHX 210714 SVSOHX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NASHVILLE TN 114 AM CST SAT JAN 21 2012 TNC119-187-210724- /O.EXP.KOHX.TO.W.0004.000000T0000Z-120121T0715Z/ WILLIAMSON TN-MAURY TN- 114 AM CST SAT JAN 21 2012 ...THE TORNADO WARNING FOR NORTHEASTERN MAURY AND SOUTH CENTRAL WILLIAMSON COUNTIES WILL EXPIRE AT 115 AM CST... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM. IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM CST. LAT...LON 3565 8715 3583 8719 3590 8684 3571 8679 TIME...MOT...LOC 0714Z 180DEG 0KT 3575 8710 $$ ROSE
The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 21, 2:29 AM CST | Special Weather Statement | OHX | Cannon | 31 min |
| Jan 21, 3:17 AM CST | Special Weather Statement | OHX | Cannon | 58 min |
| Jan 21, 3:38 AM CST | Special Weather Statement | OHX | Wayne | 52 min |
| Jan 21, 3:50 AM CST | Severe Thunderstorm Warning | OHX | Giles, Lawrence, Wayne | 25 min |
| Jan 21, 4:15 AM CST | Severe Thunderstorm Warning | OHX | Giles, Lawrence | 33 min |
| Jan 21, 3:50 PM CST | Wind Advisory | OHX | Bedford, Benton, Cannon, Cheatham, Clay, Coffee and 33 more | 36 hr |
| Jan 21, 5:02 PM CST | Dense Fog Advisory | OHX | Bedford, Benton, Cannon, Cheatham, Clay, Coffee and 33 more | 19 hr |
Nearby
Tornado Warnings in Tennessee, 2012Every tornado warning in 2012Tornadoes in 2012
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.