Alert archive / Alabama / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 331, NWS Birmingham, AL

August 20, 2002Lowndes County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Aug 20, 2002, 7:43 PM CDT for Lowndes County, Alabama. It was in force for 62 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, 7:43 PM CDT (00:43 UTC)
Expired
Aug 20, 2002, 8:45 PM CDT
In force
62 min
Issued by
NWS Birmingham, AL
Area
Counties, with a storm outline in the text

County Lowndes County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 0.7 hours before the alert went out and 109 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 00:00Z on 2002-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3452 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, Birmingham, AL at 00:00Z on 2002-08-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
3452 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1210 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
47 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.

318 
WUUS54 KBMX 210043
SVRBHM
ALC085-210145-

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

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LOWNDES COUNTY IN SOUTH CENTRAL ALABAMA

* UNTIL 845 PM CDT

* AT 736 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 10 MILES EAST OF HAYNEVILLE...MOVING WEST AT 15
  MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...LOWNDESBORO.

STRONG DAMAGING WIND...AND LARGE HAIL ARE LIKELY WITH THIS STORM.
TAKE COVER IN A STURDY SHELTER UNTIL THE STORM PASSES.

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

LAT...LON 3229 8681 3199 8678 3214 8637 3230 8650

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, 8:11 PM CDTSevere Thunderstorm WarningBMXBibb34 min
Aug 20, 9:06 PM CDTSevere Thunderstorm WarningBMXDallas39 min
Aug 20, 9:23 PM CDTSevere Thunderstorm WarningBMXBarbour52 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.