Alert archive / Tennessee / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 252, NWS Nashville, TN

July 4, 1997Smith County, Tennessee

NWS Nashville, TN issued this severe thunderstorm warning at Jul 4, 1997, 5:40 AM CDT for Smith County, Tennessee. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 4, 1997, 5:40 AM CDT (10:40 UTC)
Expired
Jul 4, 1997, 6:30 AM CDT
In force
50 min
Issued by
NWS Nashville, TN
Area
Whole counties

County Smith County, TN

The radar

The Nashville radar (KOHX), 54 km from the middle of the area, began a volume at 10:40 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 nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 10.7 hours before the alert went out and 59 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 1997-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 197 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 1997-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 square meters per square second.193958Sfc1 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
197 J/kg
Mixed-layer CIN
-347 J/kg
Mixed-layer LCL
1732 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBNA 041040 RRA
SVRBNA
TNC159-041130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NASHVILLE TN
540 AM CDT FRI JUL 4 1997
 
THE NATIONAL WEATHER SERVICE IN NASHVILLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  630 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN MIDDLE TENNESSEE
 
   ...SMITH COUNTY
 
AT 538 AM CDT A SEVERE THUNDRESTORM WAS LOCATED 15 MILES WEST NORTHWEST
OF CARTHAGE MOVING EAST SOUTHEAST AT 35 MPH. THIS STORM DOWNED TREES
AROUND GOODLETTSVILLE AT 510 AM AND PRODUCED LARGE HAIL IN GALLATIN AT
520 AM. THIS STORM WILL MOIVE THROUGH THE CITIES OF ROME...CARTHAGE AND
ELMWOOD.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE RORAD.
 
 
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 3:37 AM CDTSevere Thunderstorm WarningOHXStewart38 min
Jul 4, 3:57 AM CDTSevere Thunderstorm WarningOHXMontgomery48 min
Jul 4, 4:30 AM CDTSevere Thunderstorm WarningOHXCheatham, Robertson45 min
Jul 4, 4:54 AM CDTSevere Thunderstorm WarningOHXDavidson, Sumner51 min
Jul 4, 5:22 AM CDTSevere Thunderstorm WarningOHXWilson53 min
Jul 4, 2:03 PM CDTSevere Thunderstorm WarningOHXWayne57 min
Jul 4, 3:00 PM CDTSevere Thunderstorm WarningOHXCannon, Rutherford45 min
Jul 4, 3:14 PM CDTSevere Thunderstorm WarningOHXGiles, Lawrence61 min
Jul 4, 3:22 PM CDTSevere Thunderstorm WarningOHXWarren53 min
Jul 4, 3:40 PM CDTSevere Thunderstorm WarningOHXBedford, Coffee50 min
Jul 4, 3:40 PM CDTSevere Thunderstorm WarningOHXMarshall50 min
Jul 4, 3:53 PM CDTSevere Thunderstorm WarningOHXLincoln, Moore52 min
Jul 4, 3:53 PM CDTSevere Thunderstorm WarningOHXVan Buren52 min
Jul 4, 4:25 PM CDTSevere Thunderstorm WarningOHXFranklin50 min
Jul 4, 4:25 PM CDTSevere Thunderstorm WarningOHXBledsoe50 min
Jul 4, 4:41 PM CDTSevere Thunderstorm WarningOHXGrundy, Marion64 min
Jul 4, 4:57 PM CDTSevere Thunderstorm WarningOHXSequatchie48 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 1997Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.