Alert archive / Alabama / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 39, NWS Birmingham, AL

April 7, 2004Autauga County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 7, 2004, 11:11 PM CDT for Autauga County, Alabama. It was in force for 34 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
Apr 7, 2004, 11:11 PM CDT (04:11 UTC)
Expired
Apr 7, 2004, 11:45 PM CDT
In force
34 min
Issued by
NWS Birmingham, AL
Area
Counties, with a storm outline in the text

County Autauga County, AL

The radar

The Birmingham radar (KBMX), 73 km from the middle of the area, began a volume at 04:13 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 7, 6:50 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 4.2 hours before the alert went out and 74 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 2004-04-08Temperature 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, Birmingham, AL at 00:00Z on 2004-04-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 square meters per square second.19395878Sfc1 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
2669 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
122 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.

693 
WUUS54 KBMX 080411
SVRBHM
ALC001-080445-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1111 PM CDT WED APR 7 2004

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  AUTAUGA COUNTY IN ALABAMA

* UNTIL 1145 PM CDT

* AT 1108 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER AUTAUGAVILLE...MOVING EAST AT 30 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...INDEPENDENCE
...POSEYS CROSSROADS AND PRATTVILLE.

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 3260 8687 3243 8690 3240 8650 3257 8646

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 7, 7:10 PM CDTSevere Thunderstorm WarningBMXHale35 min
Apr 7, 7:22 PM CDTSevere Thunderstorm WarningBMXDallas38 min
Apr 7, 7:43 PM CDTSevere Thunderstorm WarningBMXBibb, Hale62 min
Apr 7, 7:58 PM CDTSevere Thunderstorm WarningBMXDallas17 min
Apr 7, 8:05 PM CDTSevere Thunderstorm WarningBMXAutauga55 min
Apr 7, 8:35 PM CDTSevere Thunderstorm WarningBMXChilton, Coosa55 min
Apr 7, 8:42 PM CDTSevere Thunderstorm WarningBMXChilton48 min
Apr 7, 10:50 PM CDTSevere Thunderstorm WarningBMXAutauga25 min
Apr 7, 11:22 PM CDTSevere Thunderstorm WarningBMXElmore, Montgomery38 min
Apr 7, 11:59 PM CDTSevere Thunderstorm WarningBMXElmore, Montgomery31 min
Apr 8, 12:29 AM CDTSevere Thunderstorm WarningBMXMontgomery31 min
Apr 8, 12:35 AM CDTSevere Thunderstorm WarningBMXMacon40 min
Apr 8, 9:24 AM CDTSevere Thunderstorm WarningBMXPike36 min
Apr 8, 9:54 AM CDTSevere Thunderstorm WarningBMXBarbour36 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2004Every severe thunderstorm warning in 2004

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; radar from the NEXRAD Level II archive.