Alert archive / Alabama / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 478, NWS Birmingham, AL

June 15, 1998Greene County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 15, 1998, 6:56 PM CDT for Greene County, Alabama. It was in force for 49 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, 6:56 PM CDT (23:56 UTC)
Expired
Jun 15, 1998, 7:45 PM CDT
In force
49 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Greene County, AL

The watch it was issued in

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

IssuedProductOfficeLasted
Jun 15, 6:30 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 11.9 hours before the alert went out and 115 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 1998-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1691 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 1998-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 178 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
1691 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
579 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
178 m²/s²
0-3 km storm-relative helicity
196 m²/s²
Significant tornado parameter
2.3
Supercell composite
8.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBHM 152355 RRA
SVRBHM
ALC063-160045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
656 PM CDT MON JUN 15 1998

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GREENE COUNTY... IN WEST CENTRAL ALABAMA

* UNTIL 745 PM CDT

* AT 654 PM CDT... A SEVERE THUNDERSTORM WAS SHOWN...BY WEATHER RADAR
NEAR GAINESVILLE IN SUMTER COUNTY MOVING NORTHEAST AT 35 MILES AN
HOUR.  THIS STORM WILL MOVE ACROSS A LARGE PART OF NORTHERN AND
CENTRAL GREEN COUNTY.

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

WHEN THUNDERSTORMS ARE OCCURRING... PEOPLE SHOULD MOVE INSIDE, A
STRONG BUILDING. DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR
ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS
PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

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, 5:47 AM CDTSevere Thunderstorm WarningBMXBibb48 min
Jun 15, 6:27 PM CDTSevere Thunderstorm WarningBMXSumter33 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.