Alert archive / Alabama / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 458, NWS Birmingham, AL

June 13, 1998Colbert County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 13, 1998, 3:25 AM CDT for Colbert County, Alabama. It was in force for 65 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 13, 1998, 3:25 AM CDT (08:25 UTC)
Expired
Jun 13, 1998, 4:30 AM CDT
In force
65 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Colbert County, AL

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 8.4 hours before the alert went out and 193 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 1998-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1825 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, Nashville Metro, TN at 00:00Z on 1998-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 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
1825 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1473 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
79 m²/s²
Significant tornado parameter
0.4
Supercell composite
4.6

Open this sounding in Storm Lab

The text

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

477 
WUUS1 KBHM 130826 RRA
SVRBHM
ALC033-130930-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
325 AM CDT SAT JUN 13 1998

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  COLBERT COUNTY... IN NORTHERN ALABAMA

* UNTIL 430 AM CDT

* AT 324 AM CDT... A SEVERE THUNDERSTORM WAS SHOWN...BY WEATHER RADAR
ACROSS NORTHERN COLBERT COUNTY MOVING SOUTHEAST AT 40 MPH.

DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING
AND STAY AWAY FROM WINDOWS

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 13, 2:43 AM CDTSevere Thunderstorm WarningBMXLauderdale62 min
Jun 13, 3:34 AM CDTSevere Thunderstorm WarningBMXFranklin66 min
Jun 13, 3:38 AM CDTSevere Thunderstorm WarningBMXLawrence62 min
Jun 13, 4:04 AM CDTSevere Thunderstorm WarningBMXMadison46 min
Jun 13, 4:20 AM CDTSevere Thunderstorm WarningBMXMarion65 min
Jun 13, 4:24 AM CDTSevere Thunderstorm WarningBMXWinston66 min
Jun 13, 4:55 AM CDTSevere Thunderstorm WarningBMXLamar50 min
Jun 13, 5:30 AM CDTSevere Thunderstorm WarningBMXWalker65 min
Jun 13, 5:40 AM CDTSevere Thunderstorm WarningBMXJefferson65 min
Jun 13, 5:41 AM CDTSevere Thunderstorm WarningBMXFayette49 min
Jun 13, 6:03 AM CDTSevere Thunderstorm WarningBMXTuscaloosa62 min
Jun 13, 6:36 AM CDTSevere Thunderstorm WarningBMXBibb, Shelby64 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.