Alert archive / Alabama / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 92, NWS Birmingham, AL

July 31, 1986Talladega County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jul 31, 1986, 4:50 PM CDT for Talladega County, Alabama. It was in force for 40 min.

The area

The counties it named.

The facts

Issued
Jul 31, 1986, 4:50 PM CDT (21:50 UTC)
Expired
Jul 31, 1986, 5:30 PM CDT
In force
40 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Talladega County, AL

The radar

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

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 9.8 hours before the alert went out and 110 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 1986-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1201 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, Centreville/Bibb, AL at 12:00Z on 1986-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
1201 J/kg
Mixed-layer CIN
-202 J/kg
Mixed-layer LCL
1706 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
-30 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
Jul 30, 7:10 PM CDTSevere Thunderstorm WarningBMXLamar50 min
Jul 30, 7:35 PM CDTSevere Thunderstorm WarningBMXPickens55 min
Jul 31, 1:08 PM CDTSevere Thunderstorm WarningBMXLimestone67 min
Jul 31, 2:03 PM CDTSevere Thunderstorm WarningBMXLimestone, Madison, Morgan57 min
Jul 31, 2:28 PM CDTSevere Thunderstorm WarningBMXMarshall62 min
Jul 31, 3:00 PM CDTSevere Thunderstorm WarningBMXEtowah60 min
Jul 31, 3:05 PM CDTSevere Thunderstorm WarningBMXLawrence40 min
Jul 31, 3:29 PM CDTSevere Thunderstorm WarningBMXMarshall61 min
Jul 31, 3:45 PM CDTSevere Thunderstorm WarningBMXBlount, St. Clair60 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1986Every severe thunderstorm warning in 1986

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.