Alert archive / Alabama / Tornado Warnings in 1992

Tornado Warning 8, NWS Birmingham, AL

June 18, 1992Blount County, Alabama

NWS Birmingham, AL issued this tornado warning at Jun 18, 1992, 6:16 PM CDT for Blount County, Alabama. It was in force for 29 min.

The area

The counties it named.

The facts

Issued
Jun 18, 1992, 6:16 PM CDT (23:16 UTC)
Expired
Jun 18, 1992, 6:45 PM CDT
In force
29 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Blount County, AL

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 11.3 hours before the alert went out and 134 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, Centreville/Bibb, AL at 12:00Z on 1992-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 797 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, Centreville/Bibb, AL at 12:00Z on 1992-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 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
797 J/kg
Mixed-layer CIN
-56 J/kg
Mixed-layer LCL
700 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBHM 182316
TORBHM
ALC009-182345-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
616 PM CDT THU JUN 18 1992
 
THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  645 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH ALABAMA
 
   ...BLOUNT COUNTY
 
AT 610 PM...RADAR DETECTED A POSSIBLE TORNADO IN THE CENTRAL PART OF
BLOUNT COUNTY. RADAR SHOWED THE SEVERE THUNDERSTORMS NEAR REMLAP. THE
THUNDERSTORMS WERE MOVING SOUTHEAST AT 15 MILES AN HOUR. THIS WARNING
TAKES THE PLACE OF THE SEVERE THUNDERSTORM WARNING FOR BLOUNT COUNTY.
 
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
Jun 18, 1:53 PM CDTSevere Thunderstorm WarningBMXLimestone67 min
Jun 18, 3:51 PM CDTSevere Thunderstorm WarningBMXJackson, Madison69 min
Jun 18, 4:25 PM CDTSevere Thunderstorm WarningBMXMorgan65 min
Jun 18, 4:31 PM CDTSevere Thunderstorm WarningBMXBlount, Cullman59 min
Jun 18, 6:06 PM CDTSevere Thunderstorm WarningBMXBlount, Jefferson69 min
Jun 18, 6:06 PM CDTSevere Thunderstorm WarningBMXCullman42 min
Jun 18, 6:24 PM CDTSevere Thunderstorm WarningBMXSt. Clair66 min
Jun 18, 6:28 PM CDTSevere Thunderstorm WarningBMXEtowah20 min
Jun 18, 6:28 PM CDTSevere Thunderstorm WarningBMXCalhoun62 min

Nearby

Tornado Warnings in Alabama, 1992Every tornado warning in 1992Tornadoes in 1992

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.