Alert archive / Alabama / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 22, NWS Birmingham, AL

March 29, 1989Jefferson County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Mar 29, 1989, 1:35 PM CST for Jefferson County, Alabama. It was in force for 55 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
Mar 29, 1989, 1:35 PM CST (19:35 UTC)
Expired
Mar 29, 1989, 2:30 PM CST
In force
55 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Jefferson County, AL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Mar 29, 2:20 PM CSTThunderstorm Wind 56Jefferson, AL

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 7.6 hours before the alert went out and 78 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, Centreville/Bibb, AL at 12:00Z on 1989-03-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Centreville/Bibb, AL at 12:00Z on 1989-03-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
914 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
125 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 29, 12:46 PM CSTSevere Thunderstorm WarningBMXTuscaloosa44 min
Mar 29, 1:11 PM CSTSevere Thunderstorm WarningBMXBibb, Hale49 min
Mar 29, 1:20 PM CSTSevere Thunderstorm WarningBMXWalker40 min
Mar 29, 2:33 PM CSTSevere Thunderstorm WarningBMXJefferson27 min
Mar 29, 2:44 PM CSTSevere Thunderstorm WarningBMXChilton, St. Clair, Shelby46 min
Mar 29, 3:40 PM CSTSevere Thunderstorm WarningBMXCalhoun65 min
Mar 29, 3:40 PM CSTSevere Thunderstorm WarningBMXClay65 min
Mar 29, 4:01 PM CSTSevere Thunderstorm WarningBMXCherokee59 min
Mar 29, 4:29 PM CSTSevere Thunderstorm WarningBMXCleburne, Randolph61 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1989Every severe thunderstorm warning in 1989

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.