Alert archive / Tennessee / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 47, NWS Atlanta, GA

April 27, 1994Marion County, Tennessee

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 27, 1994, 2:52 PM CDT for Marion County, Tennessee. It was in force for 53 min.

The area

The counties it named.

The facts

Issued
Apr 27, 1994, 2:52 PM CDT (19:52 UTC)
Expired
Apr 27, 1994, 3:45 PM CDT
In force
53 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Marion County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.9 hours before the alert went out and 142 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 1994-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2248 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 1994-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 251 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
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 271954
SVRCHA
TNC115-272045-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CHATTANOOGA TN
352 PM EDT (252 PM CDT) WED APR 27 1994
 
THE NATIONAL WEATHER SERVICE IN CHATTANOOGA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  445 PM EDT (345 PM CDT)
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN SOUTHEAST TENNESSEE
 
   ...SOUTHERN MARION COUNTY
 
AT 355 PM EDT RADAR INDICATED A SEVERE THUNDERSTORM JUST NORTH
OF SOUTH PITTSBURG IN MARION COUNTY OF SOUTHEAST TENNESSEE. THE
THUNDERSTORM WAS MOVING SOUTH AT 20 MILES AN HOUR.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.4
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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Apr 27, 1:43 PM CDT, 1 hour 9 minutes before
GAZ008>010-014>018-023>029-035>038-047>051-271935-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE ATHENS GA
240 PM EDT WED APR 27 1994

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR MUCH OF NORTHEAST
GEORGIA UNTIL 900 PM EDT...

AT 230 PM EDT RADAR INDICATED A LINE OF STRONG THUNDERSTORMS WITH
VERY HEAVY RAINFALL...GUSTY WINDS...AND POSSIBLE HAIL ACROSS
EXTREME WESTERN NORTH CAROLINA WEST INTO SOUTHEAST TENNESSEE FROM
FONTANA LAKE NORTH CAROLINA TO JUST NORTH OF CHATTANOOGA TENNESSEE.
LINE MOVEMENT WAS TO THE SOUTH AT 20 MILES AN HOUR. THESE THUNDERSTORMS
WILL BE MOVING INTO EXTREME NORTH GEORGIA...MOUNTAINS AREAS IN THE
NEXT HOUR OR TWO. IF YOU ARE IN THE PATH OF THESE STORMS SEEK SHELTER.

ELSEWHERE SCATTERED THUNDERSTORMS A FEW WITH VERY HEAVY RAINFALL WERE
INDICATED ACROSS MUCH OF WESTERN NORTH CAROLINA AND EAST TENNESSEE
AND THE MOUNTAINS OF NORTHEAST GEORGIA. MOVEMENT OF THE THUNDERSTORMS
WAS TO THE EAS&T AT 35 MILES AN HOUR.
Special weather statement, Apr 27, 2:18 PM CDT, 34 minutes before
GAZ005>007-011>013-019>022-030>034-041>046-052>058-066>070-272120-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
318 PM EDT WED APR 27 1994

...SEVERE THUNDERSTORM WATCH CONTINUES FOR MUCH OF NORTHWEST GEORGIA
UNTIL 9 PM EDT...

AT 310 PM EDT RADAR INDICATED SHOWERS AND THUNDERSTORMS HAD MOVED
INTO EXTREME NORTH GEORGIA FROM SOUTHEAST TENNESSEE. THESE
THUNDERSTORMS WERE MOVING SOUTHEAST AT ABOUT 30 MILES AN HOUR. THE
STRONGEST THUNDERSTORMS WERE JUST SOUTHEAST OF BLUE RIDGE AND JUST
NORTHWEST OF CHATSWORTH. THESE THUNDERSTORMS WERE CAPABLE OF PRODUCING
STRONG GUSTY WINDS AND SMALL HAIL. CONSIDERABLE CLOUD TO GROUND
LIGHTNING IS ALSO LIKELY.

PERSONS ACROSS NORTH GEOXRGIA SHOULD CONTINUE TO BE ON THE ALERT THIS
AFTERNOON AND EVENING FOR DEVELOPING THUNDERSTORMS AND BE READY TO SEEK
SHELTER IF THREATENING WEATHER APPROACHES.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 12:39 PM CDTSevere Thunderstorm WarningFFCMcMinn, Meigs51 min
Apr 27, 12:50 PM CDTSevere Thunderstorm WarningFFCRhea40 min
Apr 27, 1:05 PM CDTSevere Thunderstorm WarningFFCBradley, Hamilton40 min
Apr 27, 1:19 PM CDTTornado WarningFFCMcMinn41 min
Apr 27, 1:38 PM CDTTornado WarningFFCHamilton52 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.