Alert archive / Tennessee / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 60, NWS Atlanta, GA

April 15, 1993Hamilton County, Tennessee

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 15, 1993, 5:01 PM EDT for Hamilton County, Tennessee. It was in force for 29 min.

The area

The counties it named.

The facts

Issued: Apr 15, 1993, 5:01 PM EDT (21:01 UTC)
Expired: Apr 15, 1993, 5:30 PM EDT
In force: 29 min
Issued by: NWS Atlanta, GA
Area: Whole counties

County Hamilton County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 9.0 hours before the alert went out and 167 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: 182 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 686 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 152 m²/s²
0-3 km storm-relative helicity: 269 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

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, Apr 15, 2:58 PM EDT, 2 hours 3 minutes before

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Special weather statement, Apr 15, 3:00 PM EDT, 2 hours 1 minute before

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Special weather statement, Apr 15, 3:49 PM EDT, 1 hour 12 minutes before

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Special weather statement, Apr 15, 3:55 PM EDT, 1 hour 6 minutes before

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Special weather statement, Apr 15, 4:12 PM EDT, 49 minutes before

GAZ005-008-ALZ012-152215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBUS GA
412 PM EDT THU APR 15 1993

...A TORNADO WATCH REMAINS IN EFFECT FOR EAST CENTRAL ALABAMA AND
PORTIONS OF WEST CENTRAL AND SOUTHWEST GEORGIA UNTIL 900 PM EDT...

AT 410 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF SHOWERS
WITH EMBEDDED STRONG TO SEVERE THUNDERSTORMS IN CENTRAL ALABAMA
EXTENDING FROM 20 MILES NORTHEAST OF BIRMINGHAM TO JUST WEST OF
MONTGOMERY.  THIS LINE OF SHOWERS AND THUNDERSTORMS WAS MOVING EAST AT
30 MPH.

PRESENTLY...NO PRECIPITATION IS OCCURRING OVER EASTERN ALABAMA AND
WESTERN GEORGIA...HOWEVER...PERSONS NEED TO BE ALERT OF RAPIDLY CHANGING
WEATHER CONDITIONS OVER THE NEXT SEVERAL HOURS AS THE POTENTIAL EXISTS
FOR SEVERE WEATHER AND POSSIBLE TORNADOES IN THE WATCH AREA.  STAY TUNED
TO NOAA WEATHER RADIO AND LOCAL TELEVISION AND RADIO STATIONS FOR
FURTHER STATEMENTS ON THIS WEATHER SITUATION.

Special weather statement, Apr 15, 4:16 PM EDT, 45 minutes before

GAZ005-008-ALZ012-152215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBUS GA
412 PM EDT THU APR 15 1993

...A TORNADO WATCH REMAINS IN EFFECT FOR EAST CENTRAL ALABAMA AND
PORTIONS OF WEST CENTRAL AND SOUTHWEST GEORGIA UNTIL 900 PM EDT...

AT 410 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF SHOWERS
WITH EMBEDDED STRONG TO SEVERE THUNDERSTORMS IN CENTRAL ALABAMA
EXTENDING FROM 20 MILES NORTHEAST OF BIRMINGHAM TO JUST WEST OF
MONTGOMERY.  THIS LINE OF SHOWERS AND THUNDERSTORMS WAS MOVING EAST AT
30 MPH.

PRESENTLY...NO PRECIPITATION IS OCCURRING OVER EASTERN ALABAMA AND
WESTERN GEORGIA...HOWEVER...PERSONS NEED TO BE ALERT OF RAPIDLY CHANGING
WEATHER CONDITIONS OVER THE NEXT SEVERAL HOURS AS THE POTENTIAL EXISTS
FOR SEVERE WEATHER AND POSSIBLE TORNADOES IN THE WATCH AREA.  STAY TUNED
TO NOAA WEATHER RADIO AND LOCAL TELEVISION AND RADIO STATIONS FOR
FURTHER STATEMENTS ON THIS WEATHER SITUATION.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 5:32 PM EDT	Severe Thunderstorm Warning	FFC	Chattooga	43 min
Apr 15, 6:04 PM EDT	Tornado Warning	FFC	Carroll, Haralson	26 min
Apr 15, 6:31 PM EDT	Tornado Warning	FFC	Haralson, Paulding, Polk	44 min
Apr 15, 5:42 PM EDT	Severe Thunderstorm Warning	FFC	Hamilton	33 min
Apr 15, 6:16 PM EDT	Severe Thunderstorm Warning	FFC	McMinn, Meigs	44 min

Nearby

Severe Thunderstorm Warnings in Tennessee, 1993 Every severe thunderstorm warning in 1993

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.