Alert archive / Alabama / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 473, NWS Birmingham, AL

June 15, 1998Lamar County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 15, 1998, 12:03 AM CDT for Lamar County, Alabama. It was in force for 47 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
Jun 15, 1998, 12:03 AM CDT (05:03 UTC)
Expired
Jun 15, 1998, 12:50 AM CDT
In force
47 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Lamar County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 5.1 hours before the alert went out and 139 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 00:00Z on 1998-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1245 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, Birmingham, AL at 00:00Z on 1998-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 186 square meters per square second.19395878Sfc1 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
1245 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
1532 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
186 m²/s²
0-3 km storm-relative helicity
278 m²/s²
Significant tornado parameter
0.6
Supercell composite
9.5

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, Jun 14, 9:35 PM CDT, 2 hours 28 minutes before
ALZ001>029-150300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
935 PM CDT SUN JUN 14 1998

THE TORNADO WATCH...NUMBER 579...FOR MOST OF THE TENNESSE VALLEY OF
ALABAMA...HAS BEEN CANCELLED.  HOWEVER...SCATTERED THUNDERSTORMS WILL
CONTINUE TO DOT THE AREA FOR THE NEXT SEVERAL HOURS.
Special weather statement, Jun 14, 9:35 PM CDT, 2 hours 28 minutes before
ALZ001>029-150300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
935 PM CDT SUN JUN 14 1998

THE TORNADO WATCH...NUMBER 579...FOR MOST OF THE TENNESSE VALLEY OF
ALABAMA...HAS BEEN CANCELLED.  HOWEVER...SCATTERED THUNDERSTORMS WILL
CONTINUE TO DOT THE AREA FOR THE NEXT SEVERAL HOURS.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 14, 10:56 PM CDTSevere Thunderstorm WarningBMXLamar49 min
Jun 15, 1:48 AM CDTSevere Thunderstorm WarningBMXJefferson37 min
Jun 15, 5:35 AM CDTSevere Thunderstorm WarningBMXHale20 min
Jun 15, 5:47 AM CDTSevere Thunderstorm WarningBMXBibb48 min
Jun 15, 6:27 PM CDTSevere Thunderstorm WarningBMXSumter33 min
Jun 15, 6:56 PM CDTSevere Thunderstorm WarningBMXGreene49 min
Jun 15, 6:59 PM CDTSevere Thunderstorm WarningBMXSumter66 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1998Every severe thunderstorm warning 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.