Alert archive / Alabama / Tornado Warnings in 2007

Tornado Warning 99, NWS Birmingham, AL

April 11, 2007Bibb County, Chilton County, Shelby County, Alabama

NWS Birmingham, AL issued this tornado warning at Apr 11, 2007, 3:27 PM CDT for Bibb County, Chilton County, Shelby County, Alabama. It was in force for 33 min. 7 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Apr 11, 2007, 3:27 PM CDT (20:27 UTC)
Expired
Apr 11, 2007, 4:00 PM CDT
In force
33 min
Issued by
NWS Birmingham, AL
Area
Counties, with a storm outline in the text

Counties Bibb County, AL, Chilton County, AL, Shelby County, AL

The radar

The Birmingham radar (KBMX), 11 km from the middle of the area, began a volume at 20:29 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.

What was reported inside it

TimeReportWhereRemark
Apr 11, 3:37 PM CDTHAIL 1.75Brent, ALNEAR CENTERVILLE
Apr 11, 3:37 PM CDTHAIL 1.75Centreville, ALGOLF BALL SIZE HAIL FELL IN AND AROUND CENTREVILLE.
Apr 11, 3:47 PM CDTTORNADO 112 Ese Centreville, ALAN EF1 TORNADO TOUCHED DOWN JUST EAST OF RANDOLPH IN FAR SOUTHEASTERN BIBB COUNTY. SEVERAL TREES WEE BLOWN DOWN OR SNAPPED OFF ALONG THE PATH. ONE HOME WAS DAMAGED BY FALLEN TREES AND ONE HOME HAD SHINGLE DAMAGE. THE TORNADO CONTINUED INTO CHILTON COUNTY AND E
Apr 11, 3:47 PM CDTTORNADO 1Randolph Co A/P, ALAT LEAST 30 TREES WERE BLOWN DOWN IN FAR SOUTHEASTERN BIBB COUNTY. THE TRESS FELL ON COUNTY ROAD 36 IN THE NEW HOPE VILLAGE COMMUNITY.
Apr 11, 3:47 PM CDTTORNADO12 Ese Centreville, ALAN EF1 TORNADO TOUCHED DOWN JUST EAST OF RANDOLPH IN FAR SOUTHEASTERN BIBB COUNTY. SEVERAL TREES WEE BLOWN DOWN OR SNAPPED OFF ALONG THE PATH. ONE HOME WAS DAMAGED BY FALLEN TREES AND ONE HOME HAD SHINGLE DAMAGE. THE TORNADO CONTINUED INTO CHILTON COUNTY AND E
Apr 11, 4:00 PM CDTHAIL 0.255 Nw Clanton, ALALONG WITH 40 TO 50 MPH EST WINDS
Apr 11, 4:00 PM CDTHAIL 0.255 Nw Clanton, ALPEA SIZED HAIL AND WIND ESTIMATED AT 40 TO 50 MPH OCCURRED JUST NORTHWEST OF CLANTON.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 11, 1:42 PM CDTTornado WatchSPC5 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 8.5 hours before the alert went out and 12 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 12:00Z on 2007-04-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2007-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 342 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
501 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
342 m²/s²
0-3 km storm-relative helicity
389 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.3

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KBMX 112029
TORBMX
ALC007-021-117-112100-
/O.NEW.KBMX.TO.W.0099.070411T2027Z-070411T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
327 PM CDT WED APR 11 2007

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  BIBB COUNTY IN CENTRAL ALABAMA...
  THIS INCLUDES THE CITY OF BRENT...
  NORTHERN CHILTON COUNTY IN CENTRAL ALABAMA...
  SOUTHERN SHELBY COUNTY IN CENTRAL ALABAMA...
  THIS INCLUDES THE CITIES OF...MONTEVALLO...COLUMBIANA...

* UNTIL 400 PM CDT

* AT 327 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES
  NORTHEAST OF BRENT...MOVING EAST AT 45 MPH.

* THE TORNADO WILL BE NEAR...
  MONTEVALLO BY 340 PM CDT...
  CALERA BY 345 PM CDT...
  COLUMBIANA BY 355 PM CDT...

* A SECOND SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR 
BRENT IS MOVING EAST AT 45 MPH. 

* THE TORNADO WILL BE NEAR...
  BRENT BY 330 PM CDT...
  RURAL WESTERN CHILTON COUNTY BY 345 PM CDT...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM CDT WEDNESDAY EVENING
FOR ALABAMA.

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

LAT...LON 3328 8653 3321 8650 3318 8651 3314 8647
      3310 8652 3286 8651 3284 8729 3310 8725

$$
3 follow-up statements
000 
WWUS54 KBMX 112033
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
333 PM CDT WED APR 11 2007

ALC007-021-117-112100-
/O.CON.KBMX.TO.W.0099.000000T0000Z-070411T2100Z/
CHILTON AL-BIBB AL-SHELBY AL-
333 PM CDT WED APR 11 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR SOUTHERN
SHELBY...EASTERN BIBB AND NORTHERN CHILTON COUNTIES...

AT 329 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR SIX MILE...OR
ABOUT 9 MILES EAST OF BRENT...MOVING EAST AT 40 MPH.

THE TORNADO WILL BE NEAR...
  BRIERFIELD IRONWORKS PARK AND 7 MILES SOUTH OF WILTON BY 340 PM
  CDT...
  BESSIE...6 MILES NORTH OF CAMPBELL AND 9 MILES SOUTH OF MONTEVALLO
  BY 345 PM CDT...
  JEMISON AND 9 MILES SOUTH OF CALERA BY 350 PM CDT...
  THORSBY AND 7 MILES NORTH OF LOMAX BY 355 PM CDT...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3328 8653 3321 8650 3318 8651 3314 8647
      3310 8652 3286 8651 3289 8714 3309 8713

$$
STEFKOVICH
000 
WWUS54 KBMX 112038
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
337 PM CDT WED APR 11 2007

ALC007-021-117-112100-
/O.CON.KBMX.TO.W.0099.000000T0000Z-070411T2100Z/
CHILTON AL-BIBB AL-SHELBY AL-
337 PM CDT WED APR 11 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR
SOUTHWESTERN SHELBY...EAST CENTRAL BIBB AND NORTHERN CHILTON
COUNTIES...

AT 333 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A TORNADO NEAR 
SIX MILE...OR ABOUT 11 MILES EAST OF BRENT...MOVING EAST AT 35 MPH. 
IN ADDITION...GOLFBALL SIZE HAIL HAS BEEN REPORTED WITH THIS STORM.

THE TORNADO WILL BE NEAR...
  BESSIE...CAMPBELL AND 8 MILES SOUTH OF WILTON BY 345 PM CDT...
  JEMISON...THORSBY AND 9 MILES SOUTH OF CALERA BY 355 PM CDT...
  7 MILES NORTH OF LOMAX BY 400 PM CDT...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3318 8658 3316 8651 3310 8652 3286 8651
      3288 8706 3308 8701

$$

STEFKOVICH
000 
WWUS54 KBMX 112049
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
349 PM CDT WED APR 11 2007

ALC007-021-117-112100-
/O.CON.KBMX.TO.W.0099.000000T0000Z-070411T2100Z/
CHILTON AL-BIBB AL-SHELBY AL-
349 PM CDT WED APR 11 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 400 PM CDT FOR SOUTH
CENTRAL SHELBY...EAST CENTRAL BIBB AND NORTHERN CHILTON COUNTIES...

AT 346 PM CDT...DOPPLER RADAR INDICATED A TORNADO NEAR BESSIE...OR 
ABOUT 12 MILES SOUTH OF MONTEVALLO...MOVING EAST AT 40 MPH.

THE TORNADO WILL BE NEAR...
  THORSBY BY 355 PM CDT...
  LOMAX BY 400 PM CDT...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 3318 8658 3316 8651 3310 8652 3286 8651
      3288 8706 3306 8691

$$
STEFKOVICH

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 11, 4:20 AM CDTLake Wind AdvisoryBMXBlount, Fayette, Jefferson, Lamar, Marion, Pickens and 5 more13 hr
Apr 11, 1:38 PM CDTSevere Thunderstorm WarningBMXLamar37 min
Apr 11, 1:46 PM CDTSevere Thunderstorm WarningBMXMarion29 min
Apr 11, 1:59 PM CDTSevere Thunderstorm WarningBMXGreene, Hale, Sumter31 min
Apr 11, 2:11 PM CDTSevere Thunderstorm WarningBMXLamar22 min
Apr 11, 2:14 PM CDTSevere Thunderstorm WarningBMXMarion21 min
Apr 11, 2:15 PM CDTSevere Thunderstorm WarningBMXTuscaloosa45 min
Apr 11, 2:25 PM CDTSevere Thunderstorm WarningBMXWinston35 min
Apr 11, 2:29 PM CDTSevere Thunderstorm WarningBMXGreene, Hale, Marengo, Sumter46 min
Apr 11, 2:43 PM CDTSevere Thunderstorm WarningBMXWalker32 min
Apr 11, 2:45 PM CDTTornado WarningBMXWalker30 min
Apr 11, 2:49 PM CDTTornado WarningBMXBibb, Hale, Perry41 min
Apr 11, 2:55 PM CDTTornado WarningBMXDallas, Hale, Marengo, Perry50 min
Apr 11, 3:04 PM CDTTornado WarningBMXJefferson26 min
Apr 11, 3:05 PM CDTTornado WarningBMXTuscaloosa25 min
Apr 11, 3:26 PM CDTTornado WarningBMXBlount, Jefferson34 min
Apr 11, 3:29 PM CDTSevere Thunderstorm WarningBMXTuscaloosa13 min
Apr 11, 3:40 PM CDTTornado WarningBMXAutauga, Dallas50 min
Apr 11, 3:41 PM CDTSevere Thunderstorm WarningBMXJefferson, Walker34 min
Apr 11, 3:57 PM CDTTornado WarningBMXChilton, Coosa33 min
Apr 11, 4:15 PM CDTSevere Thunderstorm WarningBMXBlount30 min
Apr 11, 4:27 PM CDTTornado WarningBMXAutauga, Elmore48 min
Apr 11, 4:30 PM CDTTornado WarningBMXCoosa, Tallapoosa45 min
Apr 11, 4:41 PM CDTSevere Thunderstorm WarningBMXBlount, Etowah, St. Clair34 min
Apr 11, 4:49 PM CDTTornado WarningBMXMontgomery26 min
Apr 11, 4:51 PM CDTSevere Thunderstorm WarningBMXLowndes29 min
Apr 11, 5:09 PM CDTTornado WarningBMXElmore, Macon, Montgomery, Tallapoosa51 min
Apr 11, 5:19 PM CDTTornado WarningBMXChambers, Tallapoosa41 min
Apr 11, 5:55 PM CDTTornado WarningBMXLee, Macon, Russell65 min
Apr 11, 5:59 PM CDTTornado WarningBMXChambers16 min

Nearby

Tornado Warnings in Alabama, 2007Every tornado warning in 2007Tornadoes in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.