Alert archive / Tennessee / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 21, NWS Morristown, TN

August 31, 1994Loudon County, Tennessee

NWS Morristown, TN issued this severe thunderstorm warning at Aug 31, 1994, 3:23 PM EDT for Loudon County, Tennessee. It was in force for 67 min.

The area

The counties it named.

The facts

Issued
Aug 31, 1994, 3:23 PM EDT (19:23 UTC)
Expired
Aug 31, 1994, 4:30 PM EDT
In force
67 min
Issued by
NWS Morristown, TN
Area
Whole counties

County Loudon County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.4 hours before the alert went out and 211 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 1994-08-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 366 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 12:00Z on 1994-08-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 94 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
366 J/kg
Mixed-layer CIN
-105 J/kg
Mixed-layer LCL
937 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
94 m²/s²
0-3 km storm-relative helicity
99 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

000 
WUUS1 KTYS 311923 RRA
SVRTYS
TNC105-312030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KNOXVILLE TN
323 PM EDT WED AUG 31 1994
 
THE NATIONAL WEATHER SERVICE IN KNOXVILLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  430 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN EAST CENTRAL TENNESSEE
 
   ...LOUDON COUNTY
 
AT 320 PM EDT THE SEVERE THUNDERSTORM IN ROANE COUNTY WAS MOVING INTO
LOUDON COUNTY. THE THUNDERSTORM WAS MOVNING TO THE SOUTHEAST AT 25 MPH.
 
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
 
 
 
NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 31, 3:02 PM EDTSevere Thunderstorm WarningMRXRoane58 min
Aug 31, 3:12 PM EDTSevere Thunderstorm WarningMRXKnox63 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 1994Every severe thunderstorm warning in 1994

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.