Alert archive / Alabama / Tornado Warnings in 1991

Tornado Warning 2, NWS Birmingham, AL

March 27, 1991Colbert County, Lauderdale County, Alabama

NWS Birmingham, AL issued this tornado warning at Mar 27, 1991, 6:25 PM CST for Colbert County, Lauderdale County, Alabama. It was in force for 22 min.

The area

The counties it named.

The facts

Issued
Mar 27, 1991, 6:25 PM CST (00:25 UTC)
Expired
Mar 27, 1991, 6:47 PM CST
In force
22 min
Issued by
NWS Birmingham, AL
Area
Whole counties

Counties Colbert County, AL, Lauderdale County, AL

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 0.4 hours before the alert went out and 180 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 1991-03-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1991-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -44 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1079 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
-44 m²/s²
0-3 km storm-relative helicity
114 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KHSV 280026
TORHSV
ALC033-077-280130-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HUNTSVILLE AL
625 PM CST WED MAR 27 1991
 
THE NATIONAL WEATHER SERVICE IN HUNTSVILLE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  730 PM CST
 
 
IN NORTH ALABAMA
 
   ...COLBERT COUNTY...LAUDERDALE COUNTY
 
AT 625 PM CST HUNTSVILLE RADAR INDICATED A TORNADO IN NORTH COLBERT
COUNTY ALABAMA. MOVEMEHNT WAS NORTHEAST AT 50 MPH.
 
 
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
Mar 27, 6:47 PM CSTSevere Thunderstorm WarningBMXFranklin15 min
Mar 27, 6:47 PM CSTSevere Thunderstorm WarningBMXColbert, Lauderdale, Limestone58 min
Mar 27, 7:02 PM CSTSevere Thunderstorm WarningBMXLawrence58 min
Mar 27, 7:16 PM CSTTornado WarningBMXLimestone19 min
Mar 27, 7:35 PM CSTTornado WarningBMXLimestone20 min
Mar 27, 7:35 PM CSTTornado WarningBMXMadison41 min
Mar 27, 8:16 PM CSTSevere Thunderstorm WarningBMXJackson59 min
Mar 27, 8:50 PM CSTSevere Thunderstorm WarningBMXCullman25 min

Nearby

Tornado Warnings in Alabama, 1991Every tornado warning in 1991Tornadoes 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.