Alert archive / Alabama / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 87, NWS Birmingham, AL

July 27, 1993Etowah County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jul 27, 1993, 3:01 PM CDT for Etowah County, Alabama. It was in force for 29 min.

The area

The counties it named.

The facts

Issued
Jul 27, 1993, 3:01 PM CDT (20:01 UTC)
Expired
Jul 27, 1993, 3:30 PM CDT
In force
29 min
Issued by
NWS Birmingham, AL
Area
Whole counties

County Etowah County, AL

The nearest sounding before it

Centreville/Bibb, AL (KCKL), launched 12:00Z, 8.0 hours before the alert went out and 167 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 1993-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3307 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 1993-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -50 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
3307 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
868 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-50 m²/s²
0-3 km storm-relative helicity
-34 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 27, 2:11 PM CDTSevere Thunderstorm WarningBMXMadison40 min
Jul 27, 2:22 PM CDTSevere Thunderstorm WarningBMXLimestone29 min
Jul 27, 3:29 PM CDTSevere Thunderstorm WarningBMXCherokee31 min
Jul 27, 3:33 PM CDTSevere Thunderstorm WarningBMXEtowah27 min
Jul 27, 3:51 PM CDTSevere Thunderstorm WarningBMXWalker39 min
Jul 27, 4:05 PM CDTSevere Thunderstorm WarningBMXCalhoun25 min
Jul 27, 4:17 PM CDTSevere Thunderstorm WarningBMXJefferson28 min
Jul 27, 4:25 PM CDTSevere Thunderstorm WarningBMXTalladega35 min
Jul 27, 4:34 PM CDTSevere Thunderstorm WarningBMXTuscaloosa26 min
Jul 27, 5:28 PM CDTSevere Thunderstorm WarningBMXTalladega32 min
Jul 27, 6:41 PM CDTSevere Thunderstorm WarningBMXRandolph34 min

Nearby

Severe Thunderstorm Warnings in Alabama, 1993Every severe thunderstorm warning in 1993

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.