Alert archive / Tennessee / Tornado Warnings in 1998

Tornado Warning 4, NWS Morristown, TN

April 3, 1998Blount County, Knox County, Tennessee

NWS Morristown, TN issued this tornado warning at Apr 3, 1998, 5:47 PM EST for Blount County, Knox County, Tennessee. It was in force for 28 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
Apr 3, 1998, 5:47 PM EST (22:47 UTC)
Expired
Apr 3, 1998, 6:15 PM EST
In force
28 min
Issued by
NWS Morristown, TN
Area
Whole counties

Counties Blount County, TN, Knox County, TN

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 3, 2:00 PM ESTTornado WatchSPC6 hr

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.8 hours before the alert went out and 242 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 1998-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 1998-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
888 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
46 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.

687 
WFUS01 KMRX 032250 RRA
TORMRX
TNC009-093-032315-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE KNOXVILLE TRI CITIES TN
547 PM EST FRI APR 3 1998
 
THE NATIONAL WEATHER SERVICE IN KNOXVILLE TRI CITIES HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  615 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST TENNESSEE
 
   ...NORTHERN BLOUNT COUNTY...SOUTHERN KNOX COUNTY
 
NATIONAL WEATHER SERVICE RADAR INDICATES A POSSIBLE TORNADO NORTH OF
ALCOA IN NORTHERN BLOUNT COUNTY. THE STORM AND TORNADO WILL MOVE
NORTHEAST AT 45 MPH. TOWNS IN THE PATH OF THIS STORM ARE THE SOUTHERN
KNOXVILLE METRO AREA...ROCKFORD AND EAGLETON.
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 3, 4:02 PM ESTSevere Thunderstorm WarningMRXMorgan, Roane28 min
Apr 3, 4:16 PM ESTTornado WarningMRXMeigs, Rhea44 min
Apr 3, 4:17 PM ESTSevere Thunderstorm WarningMRXAnderson43 min
Apr 3, 4:45 PM ESTSevere Thunderstorm WarningMRXKnox, Union45 min
Apr 3, 5:00 PM ESTTornado WarningMRXBradley, Hamilton45 min
Apr 3, 5:08 PM ESTSevere Thunderstorm WarningMRXClaiborne, Grainger67 min
Apr 3, 5:37 PM ESTSevere Thunderstorm WarningMRXHamblen, Hancock, Hawkins53 min
Apr 3, 5:37 PM ESTSevere Thunderstorm WarningMRXBlount, Knox38 min
Apr 3, 5:46 PM ESTSevere Thunderstorm WarningMRXFentress44 min
Apr 3, 5:52 PM ESTTornado WarningMRXFentress53 min
Apr 3, 5:55 PM ESTTornado WarningMRXSevier35 min
Apr 3, 5:56 PM ESTSevere Thunderstorm WarningMRXMonroe34 min
Apr 3, 6:08 PM ESTTornado WarningMRXJefferson37 min
Apr 3, 6:08 PM ESTTornado WarningMRXCumberland52 min
Apr 3, 6:23 PM ESTTornado WarningMRXHamilton, Meigs, Rhea52 min
Apr 3, 6:25 PM ESTSevere Thunderstorm WarningMRXCocke, Greene65 min
Apr 3, 6:25 PM ESTSevere Thunderstorm WarningMRXSullivan65 min
Apr 3, 6:31 PM ESTSevere Thunderstorm WarningMRXScott44 min
Apr 3, 6:31 PM ESTTornado WarningMRXCocke29 min
Apr 3, 6:35 PM ESTSevere Thunderstorm WarningMRXMcMinn40 min
Apr 3, 6:45 PM ESTSevere Thunderstorm WarningMRXWashington60 min
Apr 3, 6:47 PM ESTSevere Thunderstorm WarningMRXMorgan, Roane58 min
Apr 3, 6:47 PM ESTSevere Thunderstorm WarningMRXCampbell58 min
Apr 3, 6:49 PM ESTSevere Thunderstorm WarningMRXCumberland26 min

Nearby

Tornado Warnings in Tennessee, 1998Every tornado warning in 1998Tornadoes in 1998

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.