Alert archive / Alabama / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 476, NWS Birmingham, AL

June 15, 1998Bibb County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 15, 1998, 5:47 AM CDT for Bibb County, Alabama. It was in force for 48 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 15, 1998, 5:47 AM CDT (10:47 UTC)
Expired
Jun 15, 1998, 6:35 AM CDT
In force
48 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Bibb County, AL

What was reported inside it

TimeReportWhereRemark
Jun 15, 6:00 AM CDTHail 0.75Brent, ALDime size hail was reported just west of Brent by storm spotters.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 10.8 hours before the alert went out and 38 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 15, 2:13 AM CDT, 3 hours 34 minutes before
ALZ024-150745-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
213 AM CDT MON JUN 15 1998

THE SEVERE THUNDERSTORM WARNING FOR NORTHERN JEFFERSON COUNTY HAS BEEN
CANCELLED.  THE STORMS HAVE WEAKENED AND MOVED EAST OF THE COUNTY.

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, 12:03 AM CDTSevere Thunderstorm WarningBMXLamar47 min
Jun 15, 1:48 AM CDTSevere Thunderstorm WarningBMXJefferson37 min
Jun 15, 5:35 AM CDTSevere Thunderstorm WarningBMXHale20 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.