Alert archive / Alabama / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 334, NWS Birmingham, AL

August 20, 2002Barbour County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Aug 20, 2002, 9:23 PM CDT for Barbour County, Alabama. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 20, 2002, 9:23 PM CDT (02:23 UTC)
Expired
Aug 20, 2002, 10:15 PM CDT
In force
52 min
Issued by
NWS Birmingham, AL
Area
Counties, with a storm outline in the text

County Barbour County, AL

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 2.4 hours before the alert went out and 177 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, Peachtre/Fal Fld, GA at 00:00Z on 2002-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3393 joules per kilogram.LCLEL10008507005003002001001 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, Peachtre/Fal Fld, GA at 00:00Z on 2002-08-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
3393 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
1318 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
81 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.

161 
WUUS54 KBMX 210223
SVRBHM
ALC005-210315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
923 PM CDT TUE AUG 20 2002

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BARBOUR COUNTY IN SOUTHEAST ALABAMA

* UNTIL 1015 PM CDT

* AT 921 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER EUFAULA...MOVING WEST AT 30 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...RURAL EASTERN
BARBOUR COUNTY.

STRONG DAMAGING WIND WILL KNOCK DOWN TREES AND POWER LINES...AND
DAMAGE BUILDINGS AND HOMES. TAKE COVER NOW. FIND SUBSTANTIAL
SHELTER...AVOID WINDOWS...VEHICLES AND MOBILE HOMES.

CALL 1-800-856-0758 TO REPORT SEVERE WEATHER.

LAT...LON 3200 8547 3172 8533 3186 8513 3205 8512

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 20, 7:04 PM CDTSevere Thunderstorm WarningBMXChambers41 min
Aug 20, 7:12 PM CDTSevere Thunderstorm WarningBMXMontgomery, Pickens48 min
Aug 20, 7:13 PM CDTSevere Thunderstorm WarningBMXShelby47 min
Aug 20, 7:18 PM CDTSevere Thunderstorm WarningBMXCoosa57 min
Aug 20, 7:28 PM CDTFlash Flood WarningBMXMontgomery92 min
Aug 20, 7:31 PM CDTSevere Thunderstorm WarningBMXChilton59 min
Aug 20, 7:43 PM CDTSevere Thunderstorm WarningBMXLowndes62 min
Aug 20, 8:11 PM CDTSevere Thunderstorm WarningBMXBibb34 min
Aug 20, 9:06 PM CDTSevere Thunderstorm WarningBMXDallas39 min
Aug 20, 9:34 PM CDTSevere Thunderstorm WarningBMXHale26 min
Aug 20, 9:38 PM CDTSevere Thunderstorm WarningBMXMarengo52 min
Aug 20, 9:59 PM CDTSevere Thunderstorm WarningBMXSumter46 min
Aug 20, 10:30 PM CDTSevere Thunderstorm WarningBMXBullock45 min
Aug 20, 10:49 PM CDTSevere Thunderstorm WarningBMXPike41 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2002Every severe thunderstorm warning in 2002

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.