Alert archive / Alabama / Tornado Warnings in 1993

Tornado Warning 2, NWS Birmingham, AL

April 15, 1993Limestone County, Alabama

NWS Birmingham, AL issued this tornado warning at Apr 15, 1993, 2:31 PM CDT for Limestone County, Alabama. It was in force for 44 min.

The area

The counties it named.

The facts

Issued
Apr 15, 1993, 2:31 PM CDT (19:31 UTC)
Expired
Apr 15, 1993, 3:15 PM CDT
In force
44 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Limestone County, AL

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.5 hours before the alert went out and 151 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 1993-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 182 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 1993-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 152 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
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

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

000 
TTAA00 KHSV 151932
TORHSV
ALC083-152015-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
231 PM CDT THU APR 15 1993
 
THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  315 PM CDT
...
 
IN NORTH ALABAMA
 
   ...LIMESTONE COUNTY
 
AT 231 DOPPLER RADAR INDICATED A POSSIBLE TORNADO IN NORTHEAST
LIMESTONE COUNTY EAST OF ELKMONT MOVING TOWARDS ARDMORE.
 
THIS TORNADO WAS MOVING NORTH NORTHEAST AT 45 TO 50 MILES AN HOUR.
 
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.

The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 15, 12:05 PM CDTSevere Thunderstorm WarningBMXGreene25 min
Apr 15, 1:53 PM CDTSevere Thunderstorm WarningBMXBibb, Jefferson67 min
Apr 15, 2:28 PM CDTTornado WarningBMXJefferson32 min
Apr 15, 3:15 PM CDTSevere Thunderstorm WarningBMXTalladega60 min
Apr 15, 4:29 PM CDTSevere Thunderstorm WarningBMXCherokee46 min
Apr 15, 4:51 PM CDTSevere Thunderstorm WarningBMXCleburne54 min

Nearby

Tornado Warnings in Alabama, 1993Every tornado warning in 1993Tornadoes 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.