Alert archive / Alabama / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 331, NWS Birmingham, AL

June 11, 2003Jefferson County, Shelby County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 11, 2003, 2:31 PM CDT for Jefferson County, Shelby County, Alabama. It was in force for 59 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: Jun 11, 2003, 2:31 PM CDT (19:31 UTC)
Expired: Jun 11, 2003, 3:30 PM CDT
In force: 59 min
Issued by: NWS Birmingham, AL
Area: Counties, with a storm outline in the text

Counties Jefferson County, AL, Shelby County, AL

The radar

The Birmingham radar (KBMX), 34 km from the middle of the area, began a volume at 19:33 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.

Issued	Product	Office	Lasted
Jun 11, 11:50 AM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.5 hours before the alert went out and 33 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: 2567 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 545 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

775 
WUUS54 KBMX 111931
SVRBHM
ALC073-117-112030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
230 PM CDT WED JUN 11 2003

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  JEFFERSON COUNTY IN ALABAMA
  SHELBY COUNTY IN ALABAMA

* UNTIL 330 PM CDT

* AT 230 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
SEVERAL SEVERE THUNDERSTORMS ACROSS JEFFERSON AND SHELBY 
COUNTIES...MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...BESSEMER...
BIRMINGHAM...BIRMINGHAM AIRPORT...CAHABA HEIGHTS...CHELSEA...
FULTONDALE...GARDENDALE...GRAYSVILLE...HARPERSVILLE...HELENA...
HOMEWOOD...HOOVER...HOOVER METROPOLITAN STADIUM...HUEYTOWN...
INVERNESS...KIMBERLY...LAKE PURDY...LEEDS...MINOR...MORRIS...NORTH
JOHNS...OAK MOUNTAIN STATE PARK...PELHAM...VANDIVER...WARRIOR AND
WEST JEFFERSON.

STRONG DAMAGING WIND WILL KNOCK DOWN TREES AND POWER LINES...AND MAY 
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 3350 8727 3311 8684 3333 8640 3384 8680

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 1:13 PM CDT	Severe Thunderstorm Warning	BMX	Lamar, Pickens	47 min
Jun 11, 1:54 PM CDT	Severe Thunderstorm Warning	BMX	Marion, Winston	51 min
Jun 11, 2:21 PM CDT	Severe Thunderstorm Warning	BMX	Walker	39 min
Jun 11, 2:48 PM CDT	Severe Thunderstorm Warning	BMX	Winston	12 min
Jun 11, 2:59 PM CDT	Severe Thunderstorm Warning	BMX	St. Clair, Talladega	46 min
Jun 11, 3:15 PM CDT	Severe Thunderstorm Warning	BMX	Blount	60 min
Jun 11, 3:44 PM CDT	Severe Thunderstorm Warning	BMX	Etowah	46 min
Jun 11, 3:48 PM CDT	Severe Thunderstorm Warning	BMX	St. Clair	12 min
Jun 11, 6:06 PM CDT	Severe Thunderstorm Warning	BMX	Marion	54 min
Jun 11, 6:17 PM CDT	Severe Thunderstorm Warning	BMX	Lamar	58 min
Jun 11, 6:50 PM CDT	Severe Thunderstorm Warning	BMX	Winston	55 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2003 Every severe thunderstorm warning in 2003

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.