Alert archive / Alabama / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 521, NWS Birmingham, AL

June 19, 1998Blount County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 19, 1998, 11:30 AM CDT for Blount County, Alabama. It was in force for 35 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 19, 1998, 11:30 AM CDT (16:30 UTC)
Expired
Jun 19, 1998, 12:05 PM CDT
In force
35 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Blount County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 4.5 hours before the alert went out and 91 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 1998-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3117 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 12:00Z on 1998-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -41 square meters per square second.1939Sfc1 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
3117 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
831 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-41 m²/s²
0-3 km storm-relative helicity
-40 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

927 
WUUS1 KBHM 191631 RRA
SVRBHM
ALC009-191705-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1130 AM CDT FRI JUN 19 1998

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

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

* UNTIL 1205 PM CDT

* AT 1128 AM CDT... A SEVERE THUNDERSTORM WAS SHOWN...BY WEATHER RADAR
  OVER THE NECTAR AND BLOUNTSPRINGS AREAS OF BLOUNT COUNTY.  THE
  STORM WAS MOVING EAST AT   30 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT THE NECTAR...BLOUNTSPRING...
  HAYDEN AND LOCUST FORK...AND ONEONTA AREAS.

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 19, 9:33 AM CDTSevere Thunderstorm WarningBMXDeKalb32 min
Jun 19, 9:35 AM CDTSevere Thunderstorm WarningBMXColbert, Lauderdale35 min
Jun 19, 10:01 AM CDTSevere Thunderstorm WarningBMXCalhoun, Cherokee, Cleburne34 min
Jun 19, 10:06 AM CDTSevere Thunderstorm WarningBMXDeKalb34 min
Jun 19, 10:09 AM CDTSevere Thunderstorm WarningBMXLawrence31 min
Jun 19, 10:14 AM CDTSevere Thunderstorm WarningBMXColbert36 min
Jun 19, 11:18 AM CDTSevere Thunderstorm WarningBMXCullman32 min
Jun 19, 11:34 AM CDTSevere Thunderstorm WarningBMXMarshall36 min
Jun 19, 11:51 AM CDTSevere Thunderstorm WarningBMXEtowah, St. Clair44 min
Jun 19, 12:04 PM CDTSevere Thunderstorm WarningBMXBlount31 min
Jun 19, 1:14 PM CDTSevere Thunderstorm WarningBMXChambers, Tallapoosa31 min
Jun 19, 1:24 PM CDTSevere Thunderstorm WarningBMXLee31 min
Jun 19, 1:33 PM CDTSevere Thunderstorm WarningBMXBullock, Macon32 min
Jun 19, 1:49 PM CDTSevere Thunderstorm WarningBMXRussell31 min
Jun 19, 2:01 PM CDTSevere Thunderstorm WarningBMXBarbour49 min
Jun 19, 2:02 PM CDTSevere Thunderstorm WarningBMXTuscaloosa28 min
Jun 19, 2:05 PM CDTSevere Thunderstorm WarningBMXLee35 min
Jun 19, 2:05 PM CDTSevere Thunderstorm WarningBMXBullock35 min
Jun 19, 2:27 PM CDTSevere Thunderstorm WarningBMXChilton33 min
Jun 19, 2:33 PM CDTSevere Thunderstorm WarningBMXCoosa32 min
Jun 19, 2:36 PM CDTSevere Thunderstorm WarningBMXJefferson, Tuscaloosa34 min
Jun 19, 2:42 PM CDTSevere Thunderstorm WarningBMXShelby33 min
Jun 19, 3:00 PM CDTSevere Thunderstorm WarningBMXChilton, Coosa30 min
Jun 19, 3:07 PM CDTSevere Thunderstorm WarningBMXJefferson, Shelby48 min
Jun 19, 3:08 PM CDTSevere Thunderstorm WarningBMXBibb32 min
Jun 19, 3:18 PM CDTSevere Thunderstorm WarningBMXElmore32 min
Jun 19, 3:34 PM CDTSevere Thunderstorm WarningBMXChilton36 min
Jun 19, 4:10 PM CDTSevere Thunderstorm WarningBMXAutauga, Chilton30 min
Jun 19, 5:10 PM CDTTornado WarningBMXMontgomery35 min
Jun 19, 5:28 PM CDTSevere Thunderstorm WarningBMXPike32 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.