Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 47, NWS Birmingham, AL

March 2, 2012Cherokee County, Etowah County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Mar 2, 2012, 7:11 PM CST for Cherokee County, Etowah County, Alabama. It was in force for 49 min. 3 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: Mar 2, 2012, 7:11 PM CST (01:11 UTC)
Expired: Mar 2, 2012, 8:00 PM CST
In force: 49 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Cherokee County, AL, Etowah County, AL

The radar

The Northeast Alabama radar (KHTX), 86 km from the middle of the area, began a volume at 01:13 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
Mar 2, 7:15 PM CST	HAIL 0.75	4 Nne Reece City, AL
Mar 2, 7:15 PM CST	HAIL 1	Reece City, AL
Mar 2, 7:43 PM CST	HAIL 0.88	Centre, AL

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
Mar 2, 4:37 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 1.2 hours before the alert went out and 147 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: 754 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1391 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 231 m²/s²
0-3 km storm-relative helicity: 315 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 7.4

Open this sounding in Storm Lab

The text

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

444 
WUUS54 KBMX 030111
SVRBMX
ALC019-055-030200-
/O.NEW.KBMX.SV.W.0047.120303T0111Z-120303T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
711 PM CST FRI MAR 2 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL CHEROKEE COUNTY IN NORTHEAST ALABAMA...
  NORTHEASTERN ETOWAH COUNTY IN NORTHEAST ALABAMA...

* UNTIL 800 PM CST

* AT 707 PM CST...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
  WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR REECE
  CITY...OR 8 MILES SOUTHEAST OF BOAZ...AND MOVING EAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CENTRE...CENTRE MUNICIPAL AIRPORT...CEDAR BLUFF...FORNEY...
  ANDERSON...TABOR ROAD...SLACKLAND AND CHEROKEE ROCK VILLAGE.

THIS INCLUDES...
INTERSTATE 59 EXIT NUMBER 188...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS.

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

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

LAT...LON 3432 8546 3409 8542 3408 8542 3404 8613
      3418 8618 3421 8603 3421 8585 3425 8585
      3424 8582 3425 8581
TIME...MOT...LOC 0111Z 260DEG 43KT 3411 8604

$$

27

2 follow-up statements

829 
WWUS54 KBMX 030126
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
726 PM CST FRI MAR 2 2012

ALC019-055-030200-
/O.CON.KBMX.SV.W.0047.000000T0000Z-120303T0200Z/
CHEROKEE AL-ETOWAH AL-
726 PM CST FRI MAR 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
ETOWAH AND CENTRAL CHEROKEE COUNTIES UNTIL 800 PM CST...

AT 725 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL...
AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
SLACKLAND...OR 10 MILES NORTH OF HOKES BLUFF...MOVING EAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  CENTRE...CENTRE MUNICIPAL AIRPORT...CEDAR BLUFF...FORNEY...CHEROKEE
  ROCK VILLAGE...LEESBURG...SAND ROCK...TENNALA...MOSHAT AND WEISS
  LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

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

LAT...LON 3432 8546 3409 8542 3408 8542 3405 8595
      3420 8594 3421 8585 3425 8585 3424 8582
      3425 8581
TIME...MOT...LOC 0126Z 260DEG 43KT 3414 8583

$$

27

965 
WWUS54 KBMX 030141
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
741 PM CST FRI MAR 2 2012

ALC055-030151-
/O.CAN.KBMX.SV.W.0047.000000T0000Z-120303T0200Z/
ETOWAH AL-
741 PM CST FRI MAR 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ETOWAH 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 3421 8577 3432 8546 3409 8542 3408 8542
      3406 8577
TIME...MOT...LOC 0141Z 260DEG 43KT 3417 8562

$$

ALC019-030200-
/O.CON.KBMX.SV.W.0047.000000T0000Z-120303T0200Z/
CHEROKEE AL-
741 PM CST FRI MAR 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
CHEROKEE COUNTY UNTIL 800 PM CST...

AT 739 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
CENTRE MUNICIPAL AIRPORT...MOVING EAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  CEDAR BLUFF...FORNEY...CORNWALL FURNACE PARK...GAYLESVILLE...
  HOWELLS CROSSROADS...WATERHOUSE AND FULLERTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

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

LAT...LON 3421 8577 3432 8546 3409 8542 3408 8542
      3406 8577
TIME...MOT...LOC 0141Z 260DEG 43KT 3417 8562

$$

27

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 2, 6:01 PM CST	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Marion, Winston	44 min
Mar 2, 6:01 PM CST	Severe Thunderstorm Warning	BMX	Autauga, Coosa, Elmore	44 min
Mar 2, 6:05 PM CST	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Walker	43 min
Mar 2, 6:11 PM CST	Severe Thunderstorm Warning	BMX	Calhoun, Cleburne	49 min
Mar 2, 6:19 PM CST	Tornado Warning	BMX	Calhoun, Cleburne	41 min
Mar 2, 6:22 PM CST	Tornado Warning	BMX	Lowndes, Montgomery	15 min
Mar 2, 6:33 PM CST	Severe Thunderstorm Warning	BMX	Blount, Etowah	42 min
Mar 2, 6:44 PM CST	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, Shelby, Tuscaloosa	46 min
Mar 2, 6:44 PM CST	Severe Thunderstorm Warning	BMX	Sumter	46 min
Mar 2, 6:46 PM CST	Severe Thunderstorm Warning	BMX	Winston	29 min
Mar 2, 7:06 PM CST	Severe Thunderstorm Warning	BMX	Greene, Pickens, Sumter	39 min
Mar 2, 7:15 PM CST	Severe Thunderstorm Warning	BMX	Jefferson, St. Clair	45 min
Mar 2, 7:21 PM CST	Severe Thunderstorm Warning	BMX	Greene, Pickens, Sumter	39 min
Mar 2, 7:36 PM CST	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Pickens	39 min
Mar 2, 7:49 PM CST	Severe Thunderstorm Warning	BMX	Jefferson, Tuscaloosa, Walker	41 min
Mar 2, 7:51 PM CST	Severe Thunderstorm Warning	BMX	Marion, Walker, Winston	39 min
Mar 2, 7:59 PM CST	Severe Thunderstorm Warning	BMX	Fayette, Tuscaloosa, Walker	46 min
Mar 2, 8:13 PM CST	Severe Thunderstorm Warning	BMX	Fayette, Walker	34 min
Mar 2, 8:17 PM CST	Severe Thunderstorm Warning	BMX	Fayette, Lamar	28 min
Mar 2, 8:38 PM CST	Areal Flood Advisory	BMX	Greene, Hale, Marengo, Sumter	112 min
Mar 2, 8:38 PM CST	Tornado Warning	BMX	Dallas, Hale, Marengo, Perry	52 min
Mar 2, 8:56 PM CST	Severe Thunderstorm Warning	BMX	Marion	49 min
Mar 2, 9:13 PM CST	Tornado Warning	BMX	Autauga, Chilton, Dallas, Perry	47 min
Mar 2, 9:16 PM CST	Areal Flood Advisory	BMX	Walker, Winston	119 min
Mar 2, 9:45 PM CST	Tornado Warning	BMX	Autauga, Chilton	29 min
Mar 2, 9:47 PM CST	Areal Flood Advisory	BMX	Blount	3 hr
Mar 2, 10:00 PM CST	Severe Thunderstorm Warning	BMX	Clay, Cleburne, Randolph, Talladega	45 min
Mar 2, 10:08 PM CST	Tornado Warning	BMX	Clay, Cleburne, Randolph, Talladega	24 min
Mar 2, 10:11 PM CST	Tornado Warning	BMX	Coosa	31 min
Mar 2, 10:22 PM CST	Severe Thunderstorm Warning	BMX	Jefferson	38 min
Mar 2, 10:32 PM CST	Areal Flood Advisory	BMX	Talladega	118 min
Mar 2, 10:34 PM CST	Tornado Warning	BMX	Tallapoosa	41 min
Mar 2, 10:37 PM CST	Areal Flood Advisory	BMX	Jefferson	3 hr
Mar 2, 10:45 PM CST	Severe Thunderstorm Warning	BMX	Cherokee, Etowah	45 min
Mar 2, 10:46 PM CST	Areal Flood Advisory	BMX	Blount, Etowah, St. Clair	3 hr
Mar 2, 10:52 PM CST	Severe Thunderstorm Warning	BMX	Jefferson, St. Clair, Shelby	23 min
Mar 2, 11:00 PM CST	Tornado Warning	BMX	Chambers	45 min
Mar 2, 11:05 PM CST	Areal Flood Advisory	BMX	Dallas, Greene, Hale, Marengo, Sumter	3 hr
Mar 2, 11:15 PM CST	Areal Flood Advisory	BMX	Bibb, St. Clair, Shelby, Talladega	3 hr
Mar 2, 11:47 PM CST	Severe Thunderstorm Warning	BMX	Calhoun, Cleburne	15 min
Mar 3, 12:25 AM CST	Areal Flood Advisory	BMX	Chilton, Clay, Coosa, Perry, Talladega, Tallapoosa	3 hr
Mar 3, 4:12 AM CST	Areal Flood Advisory	BMX	Bibb, Chilton, Dallas, Greene, Hale, Marengo and 2 more	3 hr
Mar 3, 4:27 AM CST	Areal Flood Advisory	BMX	Clay, Coosa, St. Clair, Shelby, Talladega, Tallapoosa	3 hr
Mar 3, 4:33 AM CST	Areal Flood Advisory	BMX	Calhoun, Chambers, Cleburne, Randolph, St. Clair	3 hr
Mar 3, 5:15 AM CST	Special Weather Statement	BMX	Russell	45 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012 Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.