Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 129, NWS Birmingham, AL

April 4, 20117 counties in Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 4, 2011, 9:40 PM CDT for 7 counties in Alabama. It was in force for 65 min. 4 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 4, 2011, 9:40 PM CDT (02:40 UTC)
Expired: Apr 4, 2011, 10:45 PM CDT
In force: 65 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Bullock County, AL, Elmore County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Montgomery County, AL, Tallapoosa County, AL

What was reported inside it

Time	Report	Where	Remark
Apr 4, 9:40 PM CDT	TSTM WND GST 60	Montgomery, AL	ESTIMATED GUSTS NEAR INTERSECTION OF US 80 AND US 231.
Apr 4, 10:15 PM CDT	TSTM WND GST 60	3 Sw Tuskegee, AL
Apr 4, 10:35 PM CDT	TSTM WND DMG	Auburn, AL	SEVERAL TREES DOWN IN AND AROUND AUBURN.
Apr 4, 10:35 PM CDT	HAIL 0.75	Auburn, AL	SEVERAL REPORTS OF PENNY SIZE HAIL

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 4, 4:55 PM CDT	Tornado Watch	SPC	6 hr
Apr 4, 9:28 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 2.7 hours before the alert went out and 137 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: 862 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1607 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 251 m²/s²
0-3 km storm-relative helicity: 356 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 9.2

Open this sounding in Storm Lab

The text

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

619 
WUUS54 KBMX 050240
SVRBMX
ALC011-051-081-085-087-101-123-050345-
/O.NEW.KBMX.SV.W.0129.110405T0240Z-110405T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
940 PM CDT MON APR 4 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BULLOCK COUNTY IN SOUTHEAST ALABAMA...
  EASTERN ELMORE COUNTY IN EAST CENTRAL ALABAMA...
  WESTERN LEE COUNTY IN EAST CENTRAL ALABAMA...
  SOUTHEASTERN LOWNDES COUNTY IN SOUTH CENTRAL ALABAMA...
  MACON COUNTY IN SOUTHEAST ALABAMA...
  MONTGOMERY COUNTY IN SOUTH CENTRAL ALABAMA...
  SOUTHERN TALLAPOOSA COUNTY IN EAST CENTRAL ALABAMA...

* UNTIL 1045 PM CDT

* AT 937 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A LINE OF
  SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED
  ALONG A LINE EXTENDING FROM MARTIN LAKE AT KOWALIGA TO LOGAN...AND
  MOVING EAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  TALLASSEE...MILSTEAD...MEADVILLE...NOTASULGA...TUSKEGEE...AUBURN...
  OPELIKA AND UNION SPRINGS.

THIS INCLUDES...
INTERSTATE 65 EXIT NUMBERS 142 THROUGH 173...
INTERSTATE 85 EXIT NUMBERS 1 THROUGH 66...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

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

LAT...LON 3241 8538 3241 8543 3228 8543 3200 8551
      3199 8560 3201 8589 3205 8589 3207 8596
      3205 8597 3205 8600 3200 8600 3198 8630
      3205 8631 3205 8639 3197 8641 3197 8665
      3276 8606 3275 8560 3273 8558 3273 8528
TIME...MOT...LOC 0240Z 265DEG 44KT 3277 8597 3203 8648

$$

61

3 follow-up statements

612 
WWUS54 KBMX 050302
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1002 PM CDT MON APR 4 2011

ALC085-050311-
/O.CAN.KBMX.SV.W.0129.000000T0000Z-110405T0345Z/
LOWNDES AL-
1002 PM CDT MON APR 4 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LOWNDES COUNTY IS
CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
WARNED AREA.

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

LAT...LON 3242 8538 3241 8543 3228 8543 3201 8551
      3199 8560 3201 8589 3205 8589 3207 8595
      3205 8600 3200 8600 3198 8630 3205 8631
      3206 8639 3273 8600 3275 8560 3273 8558
      3273 8528
TIME...MOT...LOC 0301Z 265DEG 44KT 3274 8574 3203 8618

$$

ALC011-051-081-087-101-123-050345-
/O.CON.KBMX.SV.W.0129.000000T0000Z-110405T0345Z/
BULLOCK AL-MONTGOMERY AL-MACON AL-LEE AL-ELMORE AL-TALLAPOOSA AL-
1002 PM CDT MON APR 4 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
TALLAPOOSA...EASTERN ELMORE...WESTERN LEE...MACON...MONTGOMERY AND
BULLOCK COUNTIES UNTIL 1045 PM CDT...

AT 959 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM STILL WATERS RESORT TO RAMER...
MOVING EAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  MEADVILLE...MILSTEAD...NOTASULGA...TUSKEGEE...AUBURN...UNION
  SPRINGS...OPELIKA...MIDWAY...SHORTER AND LIBERTY CITY.

THIS INCLUDES...
INTERSTATE 85 EXIT NUMBERS 6 THROUGH 66...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

THESE STORMS HAVE A HISTORY OF PRODUCING WIND DAMAGE ACROSS CENTRAL 
ALABAMA. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY 
FROM WINDOWS.

&&

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

LAT...LON 3242 8538 3241 8543 3228 8543 3201 8551
      3199 8560 3201 8589 3205 8589 3207 8595
      3205 8600 3200 8600 3198 8630 3205 8631
      3206 8639 3273 8600 3275 8560 3273 8558
      3273 8528
TIME...MOT...LOC 0301Z 265DEG 44KT 3274 8574 3203 8618

$$

61

530 
WWUS54 KBMX 050315
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1015 PM CDT MON APR 4 2011

ALC051-050325-
/O.CAN.KBMX.SV.W.0129.000000T0000Z-110405T0345Z/
ELMORE AL-
1015 PM CDT MON APR 4 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN ELMORE COUNTY IS
CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
WARNED AREA.

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

LAT...LON 3242 8538 3241 8543 3228 8543 3201 8551
      3199 8560 3201 8589 3205 8589 3207 8596
      3205 8600 3200 8600 3199 8617 3246 8592
      3249 8586 3252 8589 3273 8577 3275 8560
      3273 8558 3273 8528
TIME...MOT...LOC 0315Z 265DEG 44KT 3272 8559 3202 8598

$$

ALC011-081-087-101-123-050345-
/O.CON.KBMX.SV.W.0129.000000T0000Z-110405T0345Z/
BULLOCK AL-MONTGOMERY AL-MACON AL-LEE AL-TALLAPOOSA AL-
1015 PM CDT MON APR 4 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
TALLAPOOSA...WESTERN LEE...MACON...SOUTHEASTERN MONTGOMERY AND
BULLOCK COUNTIES UNTIL 1045 PM CDT...

AT 1014 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM WAVERLY TO PINE LEVEL...MOVING
EAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  TUSKEGEE...AUBURN...UNION SPRINGS...OPELIKA...MIDWAY...LAKE
  TUSKEGEE...FRANKLIN FIELD...TUSKEGEE NATIONAL FOREST...DAVISVILLE
  AND BEANS CROSSROADS.

THIS INCLUDES...
INTERSTATE 85 EXIT NUMBERS 26 THROUGH 66...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

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

LAT...LON 3242 8538 3241 8543 3228 8543 3201 8551
      3199 8560 3201 8589 3205 8589 3207 8596
      3205 8600 3200 8600 3199 8617 3246 8592
      3249 8586 3252 8589 3273 8577 3275 8560
      3273 8558 3273 8528
TIME...MOT...LOC 0315Z 265DEG 44KT 3272 8559 3202 8598

$$

61

512 
WWUS54 KBMX 050335
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1035 PM CDT MON APR 4 2011

ALC101-123-050345-
/O.CAN.KBMX.SV.W.0129.000000T0000Z-110405T0345Z/
MONTGOMERY AL-TALLAPOOSA AL-
1035 PM CDT MON APR 4 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN TALLAPOOSA AND
SOUTHEASTERN MONTGOMERY COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
WARNED AREA.

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

LAT...LON 3242 8538 3241 8543 3228 8543 3201 8551
      3199 8560 3201 8589 3205 8589 3207 8596
      3206 8600 3273 8558 3273 8528
TIME...MOT...LOC 0335Z 265DEG 44KT 3272 8529 3206 8575

$$

ALC011-081-087-050345-
/O.CON.KBMX.SV.W.0129.000000T0000Z-110405T0345Z/
BULLOCK AL-MACON AL-LEE AL-
1035 PM CDT MON APR 4 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN LEE...
MACON AND BULLOCK COUNTIES UNTIL 1045 PM CDT...

AT 1031 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM OPELIKA TO BEANS CROSSROADS...
MOVING EAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  MIDWAY...INVERNESS...BEAUREGARD...SOCIETY HILL...ABERFOIL...
  GUERRYTON...WARRIORSTAND...CREEK STAND AND THREE NOTCH.

THIS INCLUDES...
INTERSTATE 85 EXIT NUMBERS 38 THROUGH 66...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

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

LAT...LON 3242 8538 3241 8543 3228 8543 3201 8551
      3199 8560 3201 8589 3205 8589 3207 8596
      3206 8600 3273 8558 3273 8528
TIME...MOT...LOC 0335Z 265DEG 44KT 3272 8529 3206 8575

$$

61

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 4, 7:06 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale, Marengo, Sumter	54 min
Apr 4, 7:08 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Hale, Jefferson, Shelby, Tuscaloosa	67 min
Apr 4, 7:11 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Etowah, Jefferson, St. Clair, Shelby	64 min
Apr 4, 7:14 PM CDT	Areal Flood Advisory	BMX	Bibb, Blount, Cherokee, Etowah, Fayette, Greene and 13 more	3 hr
Apr 4, 7:25 PM CDT	Flash Flood Warning	BMX	Lamar	3 hr
Apr 4, 7:27 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee	48 min
Apr 4, 7:40 PM CDT	Flash Flood Warning	BMX	Blount, Jefferson, St. Clair, Walker	3 hr
Apr 4, 7:49 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cleburne, Talladega	41 min
Apr 4, 7:49 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Hale, Perry	26 min
Apr 4, 7:56 PM CDT	Severe Thunderstorm Warning	BMX	Hale, Marengo, Perry	34 min
Apr 4, 8:07 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Coosa, Perry, Shelby, Talladega	38 min
Apr 4, 8:13 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Perry	17 min
Apr 4, 8:16 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Shelby	29 min
Apr 4, 8:25 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Dallas, Lowndes, Marengo, Perry	65 min
Apr 4, 8:29 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Cleburne, St. Clair, Shelby, Talladega	46 min
Apr 4, 8:37 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Clay, Coosa, Shelby, Talladega	38 min
Apr 4, 8:42 PM CDT	Areal Flood Advisory	BMX	Autauga, Calhoun, Chambers, Chilton, Clay, Cleburne and 10 more	3 hr
Apr 4, 8:58 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cleburne, Randolph, Talladega	47 min
Apr 4, 9:10 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Coosa, Randolph, Tallapoosa	35 min
Apr 4, 9:14 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Elmore, Lowndes, Montgomery	31 min
Apr 4, 9:42 PM CDT	Severe Thunderstorm Warning	BMX	Chambers, Clay, Cleburne, Elmore, Randolph, Tallapoosa	63 min
Apr 4, 10:22 PM CDT	Severe Thunderstorm Warning	BMX	Bullock, Pike	38 min
Apr 4, 10:39 PM CDT	Severe Thunderstorm Warning	BMX	Barbour, Bullock, Chambers, Lee, Macon, Russell	51 min
Apr 4, 10:52 PM CDT	Areal Flood Advisory	BMX	Barbour, Bullock, Lee, Macon, Pike, Russell	113 min
Apr 4, 10:54 PM CDT	Severe Thunderstorm Warning	BMX	Barbour, Bullock, Pike	51 min
Apr 4, 11:26 PM CDT	Severe Thunderstorm Warning	BMX	Barbour, Russell	19 min
Apr 4, 11:43 PM CDT	Severe Thunderstorm Warning	BMX	Barbour	17 min
Apr 5, 3:10 PM CDT	Fire Weather Watch	BMX	Autauga, Barbour, Bullock, Chambers, Chilton, Coosa and 8 more	14 hr
Apr 5, 3:17 PM CDT	Frost Advisory	BMX	Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more	16 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 2011 Every severe thunderstorm warning 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.