Alert archive / Alabama / Tornado Warnings in 1998

Tornado Warning 18, NWS Birmingham, AL

April 3, 1998DeKalb County, Alabama

NWS Birmingham, AL issued this tornado warning at Apr 3, 1998, 3:15 PM CST for DeKalb County, Alabama. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 3, 1998, 3:15 PM CST (21:15 UTC)
Expired
Apr 3, 1998, 4:05 PM CST
In force
50 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County DeKalb County, AL

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 3, 1:00 PM CSTTornado WatchSPC6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 9.3 hours before the alert went out and 168 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, Birmingham, AL at 12:00Z on 1998-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 216 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 1998-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 355 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
216 J/kg
Mixed-layer CIN
-127 J/kg
Mixed-layer LCL
619 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
355 m²/s²
0-3 km storm-relative helicity
434 m²/s²
Significant tornado parameter
0.1
Supercell composite
6.8

Open this sounding in Storm Lab

The text

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

022 
WFUS1 KBHM 032117 RRA
TORBHM
ALC049-032205-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
315 PM CST FRI APR 3 1998

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM AL HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 405 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHERN ALABAMA

   ...NORTHERN DEKALB COUNTY...

AT 313 PM CST... WEATHER RADAR SHOWED A TORNADO IN NORTHEAST JACKSON
COUNTY NEAR PISGAH.  THE TORNADO WAS MOVING NORTHEAST AT 45 MPH
AND WILL MOVE ACROSS NORTHERN DEKALB COUNTY...AFFECTING SUCH AREAS
AS IDER AND THE I-59 WELCOME CENTER AREA.


<<CALL TO ACTION>>
IF YOU ARE IN THE PATH OF A TORNADO... THE SAFEST PLACE IS A BASEMENT.
 IF NO BASEMENT IS AVAILABLE... SEEK SAFETY IN AN INTERIOR ROOM SUCH
AS A CLOSET ON THE LOWEST FLOOR. GET UNDER A WORKBENCH OR PIECE OF
STURDY FURNITURE. 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 3, 12:24 AM CSTSevere Thunderstorm WarningBMXSumter46 min
Apr 3, 1:23 AM CSTSevere Thunderstorm WarningBMXLamar32 min
Apr 3, 1:30 AM CSTSevere Thunderstorm WarningBMXGreene, Hale50 min
Apr 3, 1:40 AM CSTSevere Thunderstorm WarningBMXMarion45 min
Apr 3, 2:01 AM CSTSevere Thunderstorm WarningBMXColbert, Lauderdale49 min
Apr 3, 2:09 AM CSTSevere Thunderstorm WarningBMXBibb46 min
Apr 3, 2:49 AM CSTSevere Thunderstorm WarningBMXLauderdale16 min
Apr 3, 2:54 AM CSTSevere Thunderstorm WarningBMXClay31 min
Apr 3, 2:29 PM CSTSevere Thunderstorm WarningBMXJackson, Madison46 min
Apr 3, 2:40 PM CSTSevere Thunderstorm WarningBMXBarbour, Russell50 min
Apr 3, 2:58 PM CSTTornado WarningBMXRussell47 min
Apr 3, 3:04 PM CSTTornado WarningBMXJackson36 min
Apr 3, 3:27 PM CSTSevere Thunderstorm WarningBMXLimestone48 min
Apr 3, 4:00 PM CSTSevere Thunderstorm WarningBMXLawrence50 min
Apr 3, 4:14 PM CSTSevere Thunderstorm WarningBMXMorgan36 min
Apr 3, 4:19 PM CSTSevere Thunderstorm WarningBMXMadison, Marshall31 min
Apr 3, 4:28 PM CSTSevere Thunderstorm WarningBMXMadison47 min
Apr 3, 4:32 PM CSTSevere Thunderstorm WarningBMXLimestone33 min
Apr 3, 4:47 PM CSTSevere Thunderstorm WarningBMXJackson63 min
Apr 3, 5:27 PM CSTSevere Thunderstorm WarningBMXMarshall33 min
Apr 3, 5:47 PM CSTSevere Thunderstorm WarningBMXDeKalb, Jackson63 min

Nearby

Tornado Warnings in Alabama, 1998Every tornado warning in 1998Tornadoes in 1998

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.