Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 33, NWS Birmingham, AL

February 28, 2011Dallas County, Lowndes County, Montgomery County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Feb 28, 2011, 5:15 PM CST for Dallas County, Lowndes County, Montgomery County, Alabama. It was in force for 45 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: Feb 28, 2011, 5:15 PM CST (23:15 UTC)
Expired: Feb 28, 2011, 6:00 PM CST
In force: 45 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Dallas County, AL, Lowndes County, AL, Montgomery County, AL

What was reported inside it

Time	Report	Where	Remark
Feb 28, 5:37 PM CST	TORNADO 1	4 Ene Hayneville, AL	THE TORNADO TOUCHED DOWN JUST TO THE WEST OF THE INTERSECTION OF DEER TRACE ROAD AND COUNTY ROAD 37 AND TRAVELED SOUTHEAST FOR ALMOST 5 MILES LIFTING JUST TO THE WEST OF INTERSTATE 65. ALONG THE PATH, 5 GRAIN ELEVATORS WERE DESTROYED...3 CHICKEN HOUSES WERE DA
Feb 28, 5:45 PM CST	TSTM WND DMG	4 W Pintlala, AL	18-WHEELER OVERTURNED ON INTERSTATE 65 NEAR PINTLALA EXIT.
Feb 28, 5:50 PM CST	TSTM WND DMG	5 E Hayneville, AL	TREES AND POWERLINES DOWN AT COUNTY ROAD 37 AND DEER TRAIL ROAD.

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
Feb 28, 12:29 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 11.3 hours before the alert went out and 131 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: 652 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 498 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 256 m²/s²
0-3 km storm-relative helicity: 425 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 5.9

Open this sounding in Storm Lab

The text

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

051 
WUUS54 KBMX 282315
SVRBMX
ALC047-085-101-010000-
/O.NEW.KBMX.SV.W.0033.110228T2315Z-110301T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
515 PM CST MON FEB 28 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN DALLAS COUNTY IN SOUTH CENTRAL ALABAMA...
  CENTRAL LOWNDES COUNTY IN SOUTH CENTRAL ALABAMA...
  SOUTHERN MONTGOMERY COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 600 PM CST

* AT 515 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 BELKNAP...
  OR 13 MILES SOUTH OF SELMONT-WEST SELMONT...AND MOVING EAST AT 55
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  MOSSES...HAYNEVILLE...MEADVILLE...GORDONVILLE...BEECHWOOD...
  DAVENPORT...PINTLALA AND STRATA.

THIS INCLUDES...
INTERSTATE 65 EXIT NUMBERS 147 THROUGH 158...

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.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 700 PM CST MONDAY EVENING FOR
SOUTHERN ALABAMA.

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

LAT...LON 3197 8630 3205 8631 3205 8639 3199 8640
      3211 8705 3229 8702 3218 8607 3199 8611
      3198 8611 3197 8612
TIME...MOT...LOC 2315Z 280DEG 48KT 3218 8691

$$

27

2 follow-up statements

071 
WWUS54 KBMX 282333
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
533 PM CST MON FEB 28 2011

ALC047-282343-
/O.CAN.KBMX.SV.W.0033.000000T0000Z-110301T0000Z/
DALLAS AL-
533 PM CST MON FEB 28 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DALLAS 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 3197 8630 3205 8631 3205 8640 3199 8640
      3209 8691 3218 8691 3223 8688 3223 8681
      3225 8685 3225 8684 3218 8607 3217 8607
      3198 8611 3197 8613
TIME...MOT...LOC 2333Z 280DEG 48KT 3213 8663

$$

ALC085-101-010000-
/O.CON.KBMX.SV.W.0033.000000T0000Z-110301T0000Z/
LOWNDES AL-MONTGOMERY AL-
533 PM CST MON FEB 28 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
MONTGOMERY AND CENTRAL LOWNDES COUNTIES UNTIL 600 PM CST...

AT 533 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
GORDONVILLE...OR NEAR MOSSES...MOVING EAST AT 55 MPH.

LOCATIONS IMPACTED INCLUDE...
  HAYNEVILLE...MEADVILLE...DAVENPORT...PINTLALA...STRATA...SPRAGUE...
  NAFTEL...RAMER...DUBLIN AND GRADY.

THIS INCLUDES...
INTERSTATE 65 EXIT NUMBERS 147 THROUGH 158...

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 3197 8630 3205 8631 3205 8640 3199 8640
      3209 8691 3218 8691 3223 8688 3223 8681
      3225 8685 3225 8684 3218 8607 3217 8607
      3198 8611 3197 8613
TIME...MOT...LOC 2333Z 280DEG 48KT 3213 8663

$$

27

104 
WWUS54 KBMX 282344
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
544 PM CST MON FEB 28 2011

ALC085-101-010000-
/O.CON.KBMX.SV.W.0033.000000T0000Z-110301T0000Z/
LOWNDES AL-MONTGOMERY AL-
544 PM CST MON FEB 28 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
MONTGOMERY AND EAST CENTRAL LOWNDES COUNTIES UNTIL 600 PM CST...

AT 544 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 7 MILES
NORTHWEST OF DAVENPORT...OR 7 MILES SOUTHEAST OF HAYNEVILLE...MOVING
EAST AT 55 MPH.

LOCATIONS IMPACTED INCLUDE...
  MEADVILLE...DAVENPORT...PINTLALA...STRATA...SPRAGUE...NAFTEL...
  RAMER...DUBLIN AND GRADY.

THIS INCLUDES...
INTERSTATE 65 EXIT NUMBERS 147 THROUGH 158...

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 3197 8630 3205 8631 3205 8640 3199 8640
      3205 8666 3223 8656 3218 8607 3198 8611
      3197 8613
TIME...MOT...LOC 2344Z 280DEG 48KT 3210 8646

$$

27

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 28, 1:53 PM CST	Special Weather Statement	BMX	Marshall	37 min
Feb 28, 2:11 PM CST	Severe Thunderstorm Warning	BMX	Cherokee	34 min
Feb 28, 2:19 PM CST	Special Weather Statement	BMX	Jefferson, Tuscaloosa	41 min
Feb 28, 2:21 PM CST	Severe Thunderstorm Warning	BMX	Cherokee, Etowah	24 min
Feb 28, 2:32 PM CST	Severe Thunderstorm Warning	BMX	Jefferson, Tuscaloosa	43 min
Feb 28, 2:44 PM CST	Severe Thunderstorm Warning	BMX	Cherokee	19 min
Feb 28, 2:58 PM CST	Tornado Warning	BMX	Barbour, Bullock, Pike	15 min
Feb 28, 2:59 PM CST	Severe Thunderstorm Warning	BMX	Bibb, Shelby	61 min
Feb 28, 3:09 PM CST	Severe Thunderstorm Warning	BMX	Calhoun, St. Clair, Talladega	51 min
Feb 28, 3:15 PM CST	Special Weather Statement	BMX	Cherokee	15 min
Feb 28, 3:39 PM CST	Tornado Warning	BMX	Shelby, Talladega	36 min
Feb 28, 3:53 PM CST	Severe Thunderstorm Warning	BMX	Cleburne	37 min
Feb 28, 4:00 PM CST	Severe Thunderstorm Warning	BMX	Clay, Coosa, Randolph, Talladega, Tallapoosa	45 min
Feb 28, 4:16 PM CST	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Dallas	44 min
Feb 28, 4:22 PM CST	Severe Thunderstorm Warning	BMX	Autauga, Dallas, Perry	38 min
Feb 28, 4:43 PM CST	Severe Thunderstorm Warning	BMX	Clay, Randolph	17 min
Feb 28, 4:47 PM CST	Severe Thunderstorm Warning	BMX	Autauga, Dallas, Lowndes	43 min
Feb 28, 5:11 PM CST	Special Weather Statement	BMX	Chambers	49 min
Feb 28, 5:29 PM CST	Tornado Warning	BMX	Chambers	23 min
Feb 28, 5:56 PM CST	Severe Thunderstorm Warning	BMX	Bullock, Montgomery	49 min

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.