Alert archive / Alabama / Tornado Warnings in 2012

Tornado Warning 34, NWS Birmingham, AL

May 13, 2012Chambers County, Lee County, Tallapoosa County, Alabama

NWS Birmingham, AL issued this tornado warning at May 13, 2012, 2:00 PM CDT for Chambers County, Lee County, Tallapoosa County, Alabama. It was in force for 20 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: May 13, 2012, 2:00 PM CDT (19:00 UTC)
Expired: May 13, 2012, 2:20 PM CDT
In force: 20 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Chambers County, AL, Lee County, AL, Tallapoosa County, AL

What was reported inside it

Time	Report	Where	Remark
May 13, 2:02 PM CDT	TORNADO 0	2 Ssw Roxana, AL	THE TORNADO TOUCHED DOWN JUST WEST OF COUNTY ROAD 217 AND CROSSED THE ROAD WHERE IT DID DAMAGE TO TREE BRANCHES INCLUDING ONE DOWNED TREE BRANCH. THE TORNADO CONTINUED 2.1 MILES TO THE NORTHEAST AND CROSSED COUNTY ROAD 66 WHERE IT SNAPPED ONE SMALL PINE TREE B

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

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.0 hours before the alert went out and 121 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: 367 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 515 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 168 m²/s²
0-3 km storm-relative helicity: 215 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.

660 
WFUS54 KBMX 131900
TORBMX
ALC017-081-123-131930-
/O.NEW.KBMX.TO.W.0034.120513T1900Z-120513T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
200 PM CDT SUN MAY 13 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN CHAMBERS COUNTY IN EAST CENTRAL ALABAMA...
  NORTHWESTERN LEE COUNTY IN EAST CENTRAL ALABAMA...
  SOUTHEASTERN TALLAPOOSA COUNTY IN EAST CENTRAL ALABAMA...

* UNTIL 230 PM CDT

* AT 156 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM
  WAS LOCATED 6 MILES NORTHEAST OF LIBERTY CITY...OR 6 MILES NORTH OF
  NOTASULGA...AND MOVING NORTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WAVERLY AND ROXANA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A STURDY BUILDING.

&&

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

LAT...LON 3281 8555 3266 8545 3262 8572 3270 8574
TIME...MOT...LOC 1900Z 243DEG 16KT 3266 8568

$$

GRANTHAM

2 follow-up statements

923 
WWUS54 KBMX 131907
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
207 PM CDT SUN MAY 13 2012

ALC123-131917-
/O.CAN.KBMX.TO.W.0034.000000T0000Z-120513T1930Z/
TALLAPOOSA AL-
207 PM CDT SUN MAY 13 2012

...THE TORNADO WARNING FOR SOUTHEASTERN TALLAPOOSA 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 3263 8569 3268 8569 3272 8566 3272 8561
      3273 8561 3273 8560 3277 8560 3281 8555
      3266 8545
TIME...MOT...LOC 1907Z 243DEG 12KT 3267 8566

$$

ALC017-081-131930-
/O.CON.KBMX.TO.W.0034.000000T0000Z-120513T1930Z/
LEE AL-CHAMBERS AL-
207 PM CDT SUN MAY 13 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHWESTERN CHAMBERS AND
NORTHWESTERN LEE COUNTIES UNTIL 230 PM CDT...

AT 205 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 7 MILES NORTH OF NOTASULGA...MOVING NORTHEAST AT 15
MPH.

LOCATIONS IMPACTED INCLUDE...
  WAVERLY AND ROXANA.

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

LAT...LON 3263 8569 3268 8569 3272 8566 3272 8561
      3273 8561 3273 8560 3277 8560 3281 8555
      3266 8545
TIME...MOT...LOC 1907Z 243DEG 12KT 3267 8566

$$

GRANTHAM

514 
WWUS54 KBMX 131920
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
220 PM CDT SUN MAY 13 2012

ALC017-081-131930-
/O.CAN.KBMX.TO.W.0034.000000T0000Z-120513T1930Z/
LEE AL-CHAMBERS AL-
220 PM CDT SUN MAY 13 2012

...THE TORNADO WARNING FOR SOUTHWESTERN CHAMBERS AND NORTHWESTERN LEE
COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

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

LAT...LON 3263 8569 3268 8569 3272 8566 3272 8561
      3273 8561 3273 8560 3277 8560 3281 8555
      3266 8545
TIME...MOT...LOC 1920Z 243DEG 12KT 3269 8561

$$

GRANTHAM

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 7:42 PM CDT	Areal Flood Advisory	BMX	Greene, Sumter	2 hr
May 12, 8:36 PM CDT	Areal Flood Advisory	BMX	Greene, Sumter	114 min
May 13, 12:59 PM CDT	Special Weather Statement	BMX	Pike	46 min
May 13, 1:47 PM CDT	Special Weather Statement	BMX	Montgomery	43 min
May 13, 2:27 PM CDT	Special Weather Statement	BMX	Chambers	48 min
May 13, 3:01 PM CDT	Special Weather Statement	BMX	Barbour	44 min
May 13, 3:03 PM CDT	Special Weather Statement	BMX	Macon	42 min
May 13, 3:45 PM CDT	Special Weather Statement	BMX	Lee	45 min
May 13, 3:48 PM CDT	Special Weather Statement	BMX	Tallapoosa	42 min
May 13, 4:15 PM CDT	Special Weather Statement	BMX	Bullock	45 min
May 13, 4:16 PM CDT	Special Weather Statement	BMX	Barbour	44 min
May 13, 4:20 PM CDT	Special Weather Statement	BMX	Lee	40 min
May 13, 4:27 PM CDT	Special Weather Statement	BMX	Tallapoosa	48 min
May 13, 5:05 PM CDT	Special Weather Statement	BMX	Lee	40 min
May 13, 5:15 PM CDT	Special Weather Statement	BMX	Chambers	45 min
May 13, 6:03 PM CDT	Special Weather Statement	BMX	Lee	27 min
May 13, 6:23 PM CDT	Areal Flood Advisory	BMX	Blount	52 min
May 13, 6:43 PM CDT	Areal Flood Advisory	BMX	Montgomery	62 min
May 13, 6:51 PM CDT	Areal Flood Advisory	BMX	Lee, Russell	114 min

Nearby

Tornado Warnings in Alabama, 2012 Every tornado warning in 2012 Tornadoes in 2012

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.