Alert archive / Tennessee / Tornado Watches in 1997

Tornado Watch 117

March 28, 19975 counties in Alabama; 5 counties in Georgia; 52 counties in Tennessee

The Storm Prediction Center issued this tornado watch at Mar 28, 1997, 9:45 PM CST for 5 counties in Alabama; 5 counties in Georgia; 52 counties in Tennessee. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Mar 28, 1997, 9:45 PM CST (03:45 UTC)
Expired
Mar 29, 1997, 4:00 AM CST
In force
6 hr
Issued by
the Storm Prediction Center
All 62 counties

Colbert County, AL, Jackson County, AL, Lauderdale County, AL, Limestone County, AL, Madison County, AL, Catoosa County, GA, Dade County, GA, Murray County, GA, Walker County, GA, Whitfield County, GA, Anderson County, TN, Bedford County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Cannon County, TN, Claiborne 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, Grainger County, TN, Grundy County, TN, Hamilton County, TN, Hancock County, TN, Jackson County, TN, Knox County, TN, Lawrence 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, Rutherford County, TN, Scott County, TN, Sequatchie County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, Union County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Williamson County, TN, Wilson County, TN

Warnings issued inside it

25 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Mar 28, 9:48 PM CSTSevere Thunderstorm WarningOHXBedford27 min
Mar 28, 10:05 PM CSTSevere Thunderstorm WarningOHXPutnam40 min
Mar 28, 10:10 PM CSTTornado WarningOHXPutnam50 min
Mar 28, 10:15 PM CSTSevere Thunderstorm WarningMRXFentress45 min
Mar 28, 10:20 PM CSTSevere Thunderstorm WarningFFCMurray10 min
Mar 28, 10:25 PM CSTTornado WarningOHXCoffee, Franklin, Lincoln50 min
Mar 28, 10:26 PM CSTSevere Thunderstorm WarningMRXAnderson49 min
Mar 28, 10:37 PM CSTTornado WarningOHXGrundy38 min
Mar 28, 10:39 PM CSTSevere Thunderstorm WarningMRXMorgan21 min
Mar 28, 10:55 PM CSTTornado WarningOHXSequatchie65 min
Mar 28, 10:58 PM CSTSevere Thunderstorm WarningMRXMorgan32 min
Mar 28, 11:01 PM CSTSevere Thunderstorm WarningOHXMarion44 min
Mar 28, 11:07 PM CSTSevere Thunderstorm WarningMRXKnox53 min
Mar 28, 11:11 PM CSTTornado WarningMRXKnox34 min
Mar 28, 11:16 PM CSTTornado WarningOHXBledsoe44 min
Mar 28, 11:17 PM CSTSevere Thunderstorm WarningMRXMcMinn, Monroe43 min
Mar 28, 11:26 PM CSTSevere Thunderstorm WarningMRXCampbell49 min
Mar 28, 11:42 PM CSTSevere Thunderstorm WarningMRXHamilton63 min
Mar 29, 12:05 AM CSTSevere Thunderstorm WarningMRXMeigs, Rhea25 min
Mar 29, 12:12 AM CSTSevere Thunderstorm WarningMRXMcMinn33 min
Mar 29, 12:33 AM CSTTornado WarningMRXBradley27 min
Mar 29, 12:42 AM CSTSevere Thunderstorm WarningMRXPolk48 min
Mar 29, 12:56 AM CSTSevere Thunderstorm WarningFFCMurray, Whitfield34 min
Mar 29, 1:01 AM CSTTornado WarningMRXPolk29 min
Mar 29, 1:17 AM CSTTornado WarningMRXBradley13 min

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 3.8 hours before the alert went out and 92 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 00:00Z on 1997-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1331 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 00:00Z on 1997-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 223 square meters per square second.19395878Sfc1 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
1331 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
1544 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
223 m²/s²
0-3 km storm-relative helicity
390 m²/s²
Significant tornado parameter
1.1
Supercell composite
11.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

693 
WWUS9 KMKC 290324 
SEL7  
MKC WW 290324
TNZ000-ALZ000-GAZ000-291000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 117
STORM PREDICTION CENTER NORMAN OK
1024 PM EST FRI MAR 28 1997

A...THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR

PARTS OF middle and eastern TENNESSEE
extreme northern ALABAMA
a small PART OF northwest GEORGIA

EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING UNTIL 500 AM EST.

TORNADOES...LARGE HAIL...DANGEROUS LIGHTNING AND DAMAGING
THUNDERSTORM WINDS ARE POSSIBLE IN THESE AREAS.


THE TORNADO WATCH AREA IS ALONG AND 95 STATUTE MILES EAST AND WEST
OF A LINE FROM 70 MILES WEST SOUTHWEST OF CHATTANOOGA TENNESSEE TO
50 MILES NORTH NORTHEAST 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 115.  WATCH NUMBER 115 WILL NOT BE IN EFFECT AFTER
1045 PM EST.
$$

C...TORNADOES AND A FEW SVR TSTMS WITH HAIL SFC AND ALF TO 2
INCHES.  EXTRM TURBC AND SFC WIND GUSTS TO 70 KNOTS.  A FEW CBS
WITH MAX TOPS TO 450.  MEAN WIND VECTOR 24045.

D...potential for lrg hail/i wnds and isold tornadoes durg the
ovrngt hrs acrs cumberland plato...where lolvl ams recovery xpcd to
cont w of wedge fnt alg the aplcn foothills.  suf shear sud rmn
present to support a few supercells...espy invof of wedge.    

E...OTR TSTMS... THIS WATCH REPLACES..WW 115.. CONT..WW 114..WW
116..

...CORFIDI

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 28, 11:45 PM CSTTornado WatchSPCCleburne4 hr
Mar 29, 4:15 AM CSTSevere Thunderstorm WatchSPCLincoln6 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.