Alert archive / Tennessee / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 42, NWS Atlanta, GA

April 27, 1994McMinn County, Meigs County, Tennessee

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 27, 1994, 1:39 PM EDT for McMinn County, Meigs County, Tennessee. It was in force for 51 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Apr 27, 1994, 1:39 PM EDT (17:39 UTC)
Expired: Apr 27, 1994, 2:30 PM EDT
In force: 51 min
Issued by: NWS Atlanta, GA
Area: Whole counties

Counties McMinn County, TN, Meigs County, TN

What was reported inside it

Time	Report	Where	Remark
Apr 27, 2:15 PM EDT	Tornado F0	Athens, TN	A small tornado touched down near the town of Athens. A few trees were knocked down.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 5.7 hours before the alert went out and 185 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2248 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 649 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 251 m²/s²
0-3 km storm-relative helicity: 250 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 10.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCHA 271736
SVRCHA
TNC107-121-271830-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHATTANOOGA TN
139 PM EDT WED APR 27 1994
 
THE NATIONAL WEATHER SERVICE IN CHATTANOOGA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  230 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST TENNESSEE
 
   ...MCMINN COUNTY...SOUTHERN MEIGS COUNTY
 
AT 135PM EDT RADAR INDICATED A SEVERE THUNDERSTORM IN SOUTHERN MEIGS
COUNTY. THE THUNDERSTORM WAS MOVING EAST SOUTHEAST AND SHOULD MOVE INTO
WEST CENTRAL AND SOUTHERN PORTIONS OF MCMINN COUNTIES WITHIN THE NEXT
20 MINUTES.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL..V.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 ROAD.

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 27, 1:50 PM EDT	Severe Thunderstorm Warning	FFC	Rhea	40 min
Apr 27, 2:05 PM EDT	Severe Thunderstorm Warning	FFC	Bradley, Hamilton	40 min
Apr 27, 2:19 PM EDT	Tornado Warning	FFC	McMinn	41 min
Apr 27, 2:38 PM EDT	Tornado Warning	FFC	Hamilton	52 min
Apr 27, 3:52 PM EDT	Severe Thunderstorm Warning	FFC	Marion	53 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 1994 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.