Alert archive / Tennessee / Tornado Watches in 1997
Tornado Watch 57
The Storm Prediction Center issued this tornado watch at Feb 21, 1997, 7:00 AM CST for 22 counties in Alabama; 18 counties in Georgia; 46 counties in Tennessee. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 21, 1997, 7:00 AM CST (13:00 UTC)
- Expired
- Feb 21, 1997, 12:00 PM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 86 counties
Blount County, AL, Calhoun County, AL, Cherokee County, AL, Clay County, AL, Cleburne County, AL, Cullman County, AL, DeKalb County, AL, Etowah County, AL, Jackson County, AL, Jefferson County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marshall County, AL, Morgan County, AL, Randolph County, AL, Shelby County, AL, St. Clair County, AL, Talladega County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Bartow County, GA, Carroll County, GA, Catoosa County, GA, Chattooga County, GA, Coweta County, GA, Dade County, GA, Douglas County, GA, Floyd County, GA, Gilmer County, GA, Gordon County, GA, Haralson County, GA, Heard County, GA, Murray County, GA, Paulding County, GA, Pickens County, GA, Polk County, GA, Walker County, GA, Whitfield County, GA, Anderson County, TN, Bedford County, TN, Bledsoe County, TN, Bradley County, TN, Campbell County, TN, Cannon County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Fentress County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hamilton County, TN, Jackson County, TN, Lincoln County, TN, Loudon County, TN, Macon County, TN, Marion County, TN, Marshall County, TN, Maury County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Moore County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Polk County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Robertson County, TN, Rutherford County, TN, Scott County, TN, Sequatchie County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Williamson County, TN, Wilson County, TN
Warnings issued inside it
24 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 21, 7:06 AM CST | Severe Thunderstorm Warning | OHX | Cheatham, Davidson, Williamson | 69 min |
| Feb 21, 7:10 AM CST | Severe Thunderstorm Warning | BMX | Limestone | 50 min |
| Feb 21, 7:21 AM CST | Severe Thunderstorm Warning | BMX | Madison | 54 min |
| Feb 21, 7:24 AM CST | Severe Thunderstorm Warning | BMX | Morgan | 51 min |
| Feb 21, 7:33 AM CST | Severe Thunderstorm Warning | OHX | Rutherford, Sumner, Wilson | 57 min |
| Feb 21, 7:53 AM CST | Severe Thunderstorm Warning | BMX | Jackson | 67 min |
| Feb 21, 7:59 AM CST | Severe Thunderstorm Warning | OHX | Franklin | 46 min |
| Feb 21, 8:10 AM CST | Severe Thunderstorm Warning | OHX | Cannon, DeKalb, Smith | 50 min |
| Feb 21, 8:17 AM CST | Severe Thunderstorm Warning | OHX | Coffee, Grundy | 43 min |
| Feb 21, 8:21 AM CST | Severe Thunderstorm Warning | BMX | Tuscaloosa | 54 min |
| Feb 21, 8:27 AM CST | Severe Thunderstorm Warning | OHX | Jackson | 48 min |
| Feb 21, 8:32 AM CST | Severe Thunderstorm Warning | OHX | Warren | 43 min |
| Feb 21, 8:38 AM CST | Severe Thunderstorm Warning | MRX | Cumberland | 67 min |
| Feb 21, 8:46 AM CST | Severe Thunderstorm Warning | OHX | Overton, Pickett | 44 min |
| Feb 21, 8:54 AM CST | Severe Thunderstorm Warning | OHX | White | 51 min |
| Feb 21, 9:02 AM CST | Severe Thunderstorm Warning | OHX | Putnam | 43 min |
| Feb 21, 9:23 AM CST | Severe Thunderstorm Warning | MRX | Fentress, Morgan | 67 min |
| Feb 21, 9:26 AM CST | Severe Thunderstorm Warning | MRX | Rhea | 64 min |
| Feb 21, 9:29 AM CST | Severe Thunderstorm Warning | BMX | Shelby | 46 min |
| Feb 21, 9:57 AM CST | Severe Thunderstorm Warning | MRX | Scott | 63 min |
| Feb 21, 10:03 AM CST | Severe Thunderstorm Warning | MRX | Anderson, Campbell | 57 min |
| Feb 21, 10:11 AM CST | Severe Thunderstorm Warning | MRX | Meigs, Roane | 34 min |
| Feb 21, 10:31 AM CST | Severe Thunderstorm Warning | BMX | Talladega | 44 min |
| Feb 21, 10:50 AM CST | Severe Thunderstorm Warning | MRX | Loudon | 55 min |
The nearest sounding before it
Birmingham, AL (KBMX), launched 12:00Z, 1.0 hours before the alert went out and 160 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
- 116 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 589 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- 475 m²/s²
- 0-3 km storm-relative helicity
- 530 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
903 WWUS9 KMKC 211233 SEL7 MKC WW 211233 ALZ000-GAZ000-TNZ000-211800- BULLETIN - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 57 STORM PREDICTION CENTER NORMAN OK 633 AM CST FRI FEB 21 1997 A...THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PARTS OF NORTHERN AND EASTERN ALABAMA PARTS OF NORTHWEST GEORGIA PARTS OF MIDDLE AND EAST TENNESSEE EFFECTIVE THIS FRIDAY MORNING UNTIL NOON CST. TORNADOES...LARGE HAIL...DANGEROUS LIGHTNING AND DAMAGING THUNDERSTORM WINDS ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 85 STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTHEAST OF BIRMINGHAM ALABAMA TO 50 MILES NORTH NORTHWEST OF CROSSVILLE TENNESSEE. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. B..OTHER WATCH INFORMATION.. THIS TORNADO WATCH REPLACES TORNADO WATCH NUMBER 56. WATCH NUMBER 56 WILL NOT BE IN EFFECT AFTER 700 AM CST. $$ C...TORNADOES AND A FEW SVR TSTMS WITH HAIL SFC AND ALF TO 1 INCHES. EXTRM TURBC AND SFC WIND GUSTS TO 70 KNOTS. A FEW CBS WITH MAX TOPS TO 400. MEAN WIND VECTOR 20045. D...POTENTIAL FOR DMGG WNDS AND ISOLD TORNADOES LKLY TO CONT AS VRY STG MIDLVL SPD MAX EJECTS NE ACRS RGN. LOLVL VERT SHEAR WL CONT TO BE ENHANCED BY SE FLOW NR THE SFC. E...OTR TSTMS... THIS WATCH REPLACES..WW 56.. CONT..WW 55.. ...CORFIDI
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 21, 4:45 AM CST | Tornado Watch | SPC | Bibb, Choctaw, Clarke, Greene, Hale, Marengo and 3 more | 6 hr |
| Feb 21, 4:45 AM CST | Tornado Watch | SPC | Colbert, Cullman, Fayette, Franklin, Jefferson, Lamar and 11 more | 6 hr |
| Feb 21, 9:15 AM CST | Tornado Watch | SPC | Autauga, Baldwin, Barbour, Bibb, Bullock, Butler and 30 more | 5 hr |
| Feb 21, 12:00 PM CST | Tornado Watch | SPC | Baldwin, Bibb, Bleckley, Butts, Carroll, Chattahoochee and 41 more | 6 hr |
| Feb 21, 2:00 PM CST | Tornado Watch | SPC | Baldwin, Banks, Barrow, Bibb, Bleckley, Butts and 56 more | 5 hr |
| Feb 21, 4:00 PM CST | Severe Thunderstorm Watch | SPC | Richmond | 6 hr |
| Feb 20, 11:00 PM CST | Tornado Watch | SPC | Crockett, Dyer, Fayette, Haywood, Lake, Lauderdale and 3 more | 6 hr |
| Feb 21, 10:15 AM CST | Severe Thunderstorm Watch | SPC | Anderson, Blount, Campbell, Claiborne, Cocke, Grainger and 13 more | 4 hr |
Nearby
Tornado Watches in Tennessee, 1997Tornado Watches in Alabama, 1997Tornado Watches in Georgia, 1997Every tornado watch in 1997
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.