Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 119, NWS Birmingham, AL

April 27, 2011Blount County, Jefferson County, St. Clair County, Alabama

NWS Birmingham, AL issued this tornado warning at Apr 27, 2011, 6:18 PM CDT for Blount County, Jefferson County, St. Clair County, Alabama. It was in force for 57 min. 1 report 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 27, 2011, 6:18 PM CDT (23:18 UTC)
Expired: Apr 27, 2011, 7:15 PM CDT
In force: 57 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Blount County, AL, Jefferson County, AL, St. Clair County, AL

The radar

The Birmingham radar (KBMX), 81 km from the middle of the area, began a volume at 23:18 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

Time	Report	Where	Remark
Apr 27, 6:23 PM CDT	TORNADO 3	3 Nne Trussville, AL	AN EF-3 TORNADO TOUCHED DOWN NEAR ARGO...BETWEEN DEERFOOT PARKWAY AND ADVENT ROAD...TRAVELING NORTHEAST ACROSS SEVERAL COUNTIES INTO GA. THE COUNTIES AFFECTED WERE JEFFERSON...ST CLAIR...CALHOUN...ETOWAH...AND CHEROKEE. THERE WERE NUMEROUS FATALITIES AND INJUR

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.

Issued	Product	Office	Lasted
Apr 27, 1:42 PM CDT	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 11.3 hours before the alert went out and 80 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 587 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: -359 m²/s²
0-3 km storm-relative helicity: -197 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

687 
WFUS54 KBMX 272318
TORBMX
ALC009-073-115-280015-
/O.NEW.KBMX.TO.W.0119.110427T2318Z-110428T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
618 PM CDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN BLOUNT COUNTY IN CENTRAL ALABAMA...
  NORTHEASTERN JEFFERSON COUNTY IN CENTRAL ALABAMA...
  CENTRAL ST. CLAIR COUNTY IN CENTRAL ALABAMA...

* UNTIL 715 PM CDT

* AT 614 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A
  CONFIRMED TORNADO NEAR CENTER POINT...OR NEAR
  PINSON-CLAY-CHALKVILLE. DOPPLER RADAR SHOWED THIS TORNADO MOVING
  NORTHEAST AT 55 MPH.

  AT 600 PM A LARGE TORNADO WAS REPORTED IN NORTHERN METRO 
BIRMINGHAM.
 

* LOCATIONS IMPACTED INCLUDE...
  PINSON-CLAY-CHALKVILLE...TRUSSVILLE...ODENVILLE...SPRINGVILLE...
  ONEONTA...COUNTY LINE...CLAY...ARGO...DALLAS AND MARGARET.

THIS INCLUDES...
INTERSTATE 459 EXIT NUMBERS 31 THROUGH 33...
INTERSTATE 59 EXIT NUMBERS 132 THROUGH 156...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT...EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR
VEHICLE AND LIE DOWN IN A LOW LYING AREA.

&&

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

LAT...LON 3403 8644 3394 8636 3393 8637 3392 8634
      3370 8615 3353 8670 3373 8686
TIME...MOT...LOC 2317Z 232DEG 47KT 3367 8667

$$

61

3 follow-up statements

458 
WWUS54 KBMX 272330 RRA
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
630 PM CDT WED APR 27 2011

ALC009-073-115-280015-
/O.CON.KBMX.TO.W.0119.000000T0000Z-110428T0015Z/
JEFFERSON AL-ST. CLAIR AL-BLOUNT AL-
630 PM CDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN BLOUNT...
CENTRAL ST. CLAIR AND NORTHEASTERN JEFFERSON COUNTIES UNTIL 715 PM
CDT...

AT 627 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR TRUSSVILLE...MOVING NORTHEAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  SPRINGVILLE...ODENVILLE...ONEONTA...ARGO...MARGARET...
  BRANCHVILLE...ALLGOOD...CLEAR SPRINGS...HOLLY SPRINGS AND ST. CLAIR
  SPRINGS.

THIS INCLUDES...
INTERSTATE 59 EXIT NUMBERS 141 THROUGH 156...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT... EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR
VEHICLE AND LIE DOWN IN A LOW LYING AREA.

&&

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

LAT...LON 3394 8636 3393 8637 3392 8634 3370 8615
      3361 8662 3377 8672 3403 8644
TIME...MOT...LOC 2330Z 247DEG 45KT 3367 8654

$$

61

108 
WWUS54 KBMX 272339
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
639 PM CDT WED APR 27 2011

ALC073-272349-
/O.CAN.KBMX.TO.W.0119.000000T0000Z-110428T0015Z/
JEFFERSON AL-
639 PM CDT WED APR 27 2011

...THE TORNADO WARNING FOR NORTHEASTERN JEFFERSON COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

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

LAT...LON 3399 8641 3394 8636 3393 8637 3392 8634
      3370 8615 3363 8653 3372 8653 3374 8655
      3377 8656 3386 8656
TIME...MOT...LOC 2339Z 247DEG 45KT 3372 8643

$$

ALC009-115-280015-
/O.CON.KBMX.TO.W.0119.000000T0000Z-110428T0015Z/
ST. CLAIR AL-BLOUNT AL-
639 PM CDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN BLOUNT AND
CENTRAL ST. CLAIR COUNTIES UNTIL 715 PM CDT...

AT 636 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR MARGARET...OR NEAR ODENVILLE...MOVING
NORTHEAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  ST. CLAIR SPRINGS...HIGHLAND LAKE...CALDWELL...WATTSVILLE AND I 59
  REST AREAS AT ONEONTA.

THIS INCLUDES...
INTERSTATE 59 EXIT NUMBERS 148 THROUGH 166...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT... EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR
VEHICLE AND LIE DOWN IN A LOW LYING AREA.

&&

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

LAT...LON 3399 8641 3394 8636 3393 8637 3392 8634
      3370 8615 3363 8653 3372 8653 3374 8655
      3377 8656 3386 8656
TIME...MOT...LOC 2339Z 247DEG 45KT 3372 8643

$$

61

780 
WWUS54 KBMX 272347
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
647 PM CDT WED APR 27 2011

ALC009-115-280015-
/O.CON.KBMX.TO.W.0119.000000T0000Z-110428T0015Z/
ST. CLAIR AL-BLOUNT AL-
647 PM CDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR EAST CENTRAL BLOUNT AND
CENTRAL ST. CLAIR COUNTIES UNTIL 715 PM CDT...

AT 646 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR ODENVILLE...MOVING NORTHEAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  CALDWELL AND I 59 REST AREAS AT ONEONTA.

THIS INCLUDES...
INTERSTATE 59 EXIT NUMBERS 156 THROUGH 166...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT... EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR
VEHICLE AND LIE DOWN IN A LOW LYING AREA.

&&

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

LAT...LON 3394 8636 3393 8637 3392 8634 3370 8615
      3368 8640 3373 8645 3388 8644 3399 8641
TIME...MOT...LOC 2347Z 247DEG 45KT 3372 8634

$$

61

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 3:37 AM CDT	Tornado Warning	BMX	Lamar, Pickens	38 min
Apr 27, 3:45 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	45 min
Apr 27, 3:59 AM CDT	Severe Thunderstorm Warning	BMX	Greene, Lamar, Pickens, Sumter	46 min
Apr 27, 4:13 AM CDT	Tornado Warning	BMX	Pickens	32 min
Apr 27, 4:14 AM CDT	Tornado Warning	BMX	Greene, Pickens, Sumter	31 min
Apr 27, 4:19 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	41 min
Apr 27, 4:26 AM CDT	Tornado Warning	BMX	Marion	34 min
Apr 27, 4:28 AM CDT	Severe Thunderstorm Warning	BMX	Greene, Marengo, Sumter	47 min
Apr 27, 4:33 AM CDT	Tornado Warning	BMX	Fayette, Pickens, Tuscaloosa	27 min
Apr 27, 4:40 AM CDT	Severe Thunderstorm Warning	BMX	Fayette, Greene, Hale, Lamar, Pickens, Tuscaloosa	50 min
Apr 27, 4:44 AM CDT	Tornado Warning	BMX	Pickens, Tuscaloosa	31 min
Apr 27, 5:07 AM CDT	Tornado Warning	BMX	Fayette, Walker	38 min
Apr 27, 5:11 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Blount, Fayette, Hale, Jefferson, Shelby and 2 more	49 min
Apr 27, 5:14 AM CDT	Tornado Warning	BMX	Jefferson, Tuscaloosa, Walker	31 min
Apr 27, 5:29 AM CDT	Tornado Warning	BMX	Bibb, Jefferson, Shelby, Tuscaloosa	31 min
Apr 27, 5:44 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Dallas, Perry, Shelby	46 min
Apr 27, 5:52 AM CDT	Severe Thunderstorm Warning	BMX	Blount, Chilton, Etowah, Jefferson, St. Clair, Shelby and 1 more	53 min
Apr 27, 6:02 AM CDT	Special Weather Statement	BMX	Autauga, Chilton, Dallas	43 min
Apr 27, 6:21 AM CDT	Severe Thunderstorm Warning	BMX	Blount, Calhoun, Cherokee, Clay, Cleburne, Coosa and 3 more	39 min
Apr 27, 6:49 AM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Clay, Cleburne, Etowah, Randolph and 1 more	56 min
Apr 27, 8:05 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	25 min
Apr 27, 8:20 AM CDT	Severe Thunderstorm Warning	BMX	Marion	25 min
Apr 27, 10:04 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	41 min
Apr 27, 10:42 AM CDT	Special Weather Statement	BMX	Lamar, Marion, Winston	48 min
Apr 27, 10:51 AM CDT	Areal Flood Advisory	BMX	Marion	54 min
Apr 27, 12:08 PM CDT	Areal Flood Advisory	BMX	Marion, Winston	112 min
Apr 27, 2:09 PM CDT	Tornado Warning	BMX	Walker, Winston	31 min
Apr 27, 2:17 PM CDT	Areal Flood Advisory	BMX	Marion, Winston	118 min
Apr 27, 2:51 PM CDT	River Flood Warning	BMX	Greene, Hale, Marengo, Sumter	19 hr
Apr 27, 2:51 PM CDT	River Flood Warning	BMX	Greene, Hale, Marengo, Sumter	6 hr
Apr 27, 2:59 PM CDT	Tornado Warning	BMX	Lamar, Marion	46 min
Apr 27, 3:15 PM CDT	Tornado Warning Emergency	BMX	Pickens, Tuscaloosa	60 min
Apr 27, 3:21 PM CDT	Tornado Warning	BMX	Lamar, Marion	54 min
Apr 27, 3:38 PM CDT	Tornado Warning Emergency	BMX	Greene, Hale, Pickens, Sumter, Tuscaloosa	67 min
Apr 27, 3:56 PM CDT	Tornado Warning	BMX	Marion	34 min
Apr 27, 3:57 PM CDT	Flash Flood Warning	BMX	Marion, Winston	3 hr
Apr 27, 4:00 PM CDT	Tornado Warning Emergency	BMX	Fayette, Pickens, Tuscaloosa, Walker	60 min
Apr 27, 4:31 PM CDT	Tornado Warning	BMX	Pickens, Tuscaloosa	20 min
Apr 27, 4:44 PM CDT	Tornado Warning	BMX	Fayette, Lamar, Marion	61 min
Apr 27, 4:47 PM CDT	Tornado Warning Emergency	BMX	Greene, Pickens, Tuscaloosa	58 min
Apr 27, 4:50 PM CDT	Tornado Warning	BMX	Greene, Hale, Sumter	55 min
Apr 27, 4:55 PM CDT	Tornado Warning Emergency	BMX	Blount, Jefferson, Walker	65 min
Apr 27, 5:22 PM CDT	Tornado Warning	BMX	Fayette, Lamar	68 min
Apr 27, 5:28 PM CDT	Tornado Warning	BMX	Marion, Winston	30 min
Apr 27, 5:31 PM CDT	Tornado Warning Emergency	BMX	Jefferson, Shelby, Tuscaloosa	59 min
Apr 27, 5:38 PM CDT	Tornado Warning Emergency	BMX	Bibb, Greene, Hale, Perry, Tuscaloosa	67 min
Apr 27, 5:39 PM CDT	Tornado Warning	BMX	Blount	21 min
Apr 27, 6:06 PM CDT	Tornado Warning	BMX	Greene, Marengo, Sumter	16 min
Apr 27, 6:14 PM CDT	Tornado Warning	BMX	Fayette, Marion, Walker, Winston	61 min
Apr 27, 6:17 PM CDT	Areal Flood Advisory	BMX	Jefferson	118 min
Apr 27, 6:20 PM CDT	Tornado Warning	BMX	Bibb, Chilton, Greene, Hale, Perry	55 min
Apr 27, 6:33 PM CDT	Areal Flood Warning	BMX	Marion, Winston	3 hr
Apr 27, 6:35 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Marion, Walker, Winston	40 min
Apr 27, 6:39 PM CDT	Flash Flood Warning	BMX	Blount, Jefferson, St. Clair	3 hr
Apr 27, 6:39 PM CDT	Tornado Warning Emergency	BMX	Bibb, Chilton, Shelby, Talladega	66 min
Apr 27, 6:49 PM CDT	Tornado Warning Emergency	BMX	Blount, Calhoun, Etowah, St. Clair	56 min

Nearby

Tornado Warnings in Alabama, 2011 Every tornado warning in 2011 Tornadoes in 2011

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.