Alert archive / Alabama / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 151, NWS Birmingham, AL

July 25, 2004Shelby County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jul 25, 2004, 2:35 PM CDT for Shelby County, Alabama. It was in force for 40 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: Jul 25, 2004, 2:35 PM CDT (19:35 UTC)
Expired: Jul 25, 2004, 3:15 PM CDT
In force: 40 min
Issued by: NWS Birmingham, AL
Area: Counties, with a storm outline in the text

County Shelby County, AL

The radar

The Birmingham radar (KBMX), 14 km from the middle of the area, began a volume at 19:39 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 nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.6 hours before the alert went out and 13 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1493 J/kg
Mixed-layer CIN: -86 J/kg
Mixed-layer LCL: 1150 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 38 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.

000 
WUUS54 KBMX 251935
SVRBHM
ALC117-252015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
233 PM CDT SUN JUL 25 2004

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SHELBY COUNTY IN ALABAMA
  THIS INCLUDES THE CITIES OF...PELHAM 

* UNTIL 315 PM CDT

* AT 230 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED NEAR PELHAM...AND
  MOVING EAST AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE ALABASTER.

LARGE HAIL IS LIKELY WITH THIS STORM. IF YOU ARE IN THE PATH OF THIS
STORM...MOVE INSIDE...AND STAY AWAY FROM WINDOWS.

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

LAT...LON 3331 8690 3317 8690 3325 8658 3343 8665

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 1:46 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson	29 min
Jul 25, 2:22 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson	23 min
Jul 25, 2:30 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton	30 min
Jul 25, 2:47 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson	28 min
Jul 25, 3:04 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Tuscaloosa	41 min
Jul 25, 3:15 PM CDT	Severe Thunderstorm Warning	BMX	Shelby	45 min
Jul 25, 3:29 PM CDT	Severe Thunderstorm Warning	BMX	Perry	46 min
Jul 25, 4:07 PM CDT	Severe Thunderstorm Warning	BMX	Tuscaloosa	38 min
Jul 25, 4:26 PM CDT	Severe Thunderstorm Warning	BMX	Winston	34 min
Jul 25, 4:34 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun	41 min
Jul 25, 4:45 PM CDT	Severe Thunderstorm Warning	BMX	Tuscaloosa	30 min
Jul 25, 4:53 PM CDT	Severe Thunderstorm Warning	BMX	Cleburne	37 min
Jul 25, 5:19 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun	26 min
Jul 25, 5:51 PM CDT	Severe Thunderstorm Warning	BMX	Fayette	24 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2004 Every 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.