Alert archive / Tennessee / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 31, NWS Atlanta, GA

March 23, 1991Rhea County, Tennessee

NWS Atlanta, GA issued this severe thunderstorm warning at Mar 23, 1991, 12:12 AM EST for Rhea County, Tennessee. It was in force for 48 min.

The area

The counties it named.

The facts

Issued
Mar 23, 1991, 12:12 AM EST (05:12 UTC)
Expired
Mar 23, 1991, 1:00 AM EST
In force
48 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Rhea County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 5.2 hours before the alert went out and 162 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 1991-03-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 581 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 1991-03-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 394 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
581 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
1260 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
394 m²/s²
0-3 km storm-relative helicity
582 m²/s²
Significant tornado parameter
1.7
Supercell composite
6.3

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, Mar 22, 10:36 PM EST, 1 hour 36 minutes before
GAZALL-230600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ATLANTA GA
1035 PM EST FRI MAR 22 1991

...TORNADO WATCH FOR EXTREME NORTHWEST GEORGIA UNTIL 3 AM EST...

A TORNADO WATCH CONTINUES IN EFFECT FOR EXTREME NORTHWEST GEORGIA.
THE WATCH AREA INCLUDES ROME...DALTON...CHATSWORTH...TRENTON AND
SURROUNDING AREAS.

AT 1030 PM EST RADAR SHOWED A BAND OF THUNDERSTORMS ACROSS TENNESSEE
AND NORTHERN ALABAMA FROM NEAR CROSSVILLE TO NEAR HUNTSVILLE.
THESE STORMS ARE EXPECTED TO MOVE EAST INTO THE NORTHWEST CORNER
OF GEORGIA AROUND MIDNIGHT OR SHORTLY THEREAFTER.

AS THE BAND OF THUNDERSTORMS ADVANCED ACROSS WESTERN TENNESSEE...
NORTHERN MISSISSIPPI AND NORTHWEST ALABAMA EARLIER THIS EVENING
THERE WERE REPORTS OF HAIL...HIGHS WINDS...AND EVEN TORNADOES.
<
PEOPLE IN NORTHWEST GEORGIA ARE URGED TO BE PREPARED TO MOVE TO
A PLACE OF SAFETY IF THREATENING WEATHER APPROACHES OR IF A WARNING
IS ISSUED. STAY ABREAST OF LATEST DEVELOPMENTS BY LISTENING TO
REPORTS FROM NEWS MEDIA OR LISTENING TO NOAA WEATHER RADIO.
Special weather statement, Mar 22, 11:38 PM EST, 34 minutes before
GAZALL-230700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ATLANTA GA
1140 PM EST FRI MAR 22 1991

...TORNADO WATCH FOR EXTREME NORTHWEST GEORGIA UNTIL 3 AM EST...

A TORNADO WATCH CONTINUES IN EFFECT FOR EXTREME NORTHWEST GEORGIA.
THE WATCH AREA INCLUDES ROME...DALTON...CHATSWORTH...TRENTON AND
SURROUNDING AREAS.

AT 1135 PM EST RADAR SHOWED A BAND OF THUNDERSTORMS ACROSS TENNESSEE
AND NORTHERN ALABAMA FROM NEAR CROSSVILLE TO NEAR HUNTSVILLE.
SOME OF THESE STORMS MAY MOVE INTO THE NORTHWEST CORNER OF
OF GEORGIA BETWEEN MIDNIGHT AND 3 AM EST.

THERE HAS BEEN A SLIGHT DECREASE IN THE STRENGTH OF THE STORMS
OVER THE PAST HOUR. HOWEVER...SOME MAY STILL BE CAPABLE OF PRODUCING
HAIL...HIGHS WINDS...AND EVEN TORNADOES.
<
PEOPLE IN NORTHWEST GEORGIA ARE URGED TO BE PREPARED TO MOVE TO
A PLACE OF SAFETY IF THREATENING WEATHER APPROACHES OR IF A WARNING
IS ISSUED. STAY ABREAST OF LATEST DEVELOPMENTS BY LISTENING TO
REPORTS FROM NEWS MEDIA OR LISTENING TO NOAA WEATHER RADIO.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 22, 11:20 PM ESTSevere Thunderstorm WarningFFCGrundy40 min
Mar 22, 11:45 PM ESTSevere Thunderstorm WarningFFCBledsoe45 min
Mar 23, 4:26 AM ESTSevere Thunderstorm WarningFFCHamilton34 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 1991Every severe thunderstorm warning in 1991

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.