Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 135, NWS Birmingham, AL

April 27, 2011Chambers County, Alabama

NWS Birmingham, AL issued this tornado warning at Apr 27, 2011, 9:00 PM CDT for Chambers County, Alabama. It was in force for 60 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: Apr 27, 2011, 9:00 PM CDT (02:00 UTC)
Expired: Apr 27, 2011, 10:00 PM CDT
In force: 60 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Emergency: Tornado emergency

County Chambers County, AL

What was reported inside it

Time	Report	Where	Remark
Apr 27, 9:19 PM CDT	TORNADO 1	5 Nne Lafayette, AL	THE TORNADO TOUCHED DOWN ALONG COUNTY ROAD 225, UPROOTING AND SNAPPING SEVERAL HARD AND SOFTWOOD TREES, AS WELL AS DOING SIGNIFICANT ROOF DAMAGE TO A SINGLE FAMILY RESIDENCE. THE TORNADO CONTINUED EAST-NORTHEAST CROSSING COUNTY ROADS 178 AND 176 WHERE NUMEROUS
Apr 27, 9:29 PM CDT	TORNADO 0	3 Se Stroud, AL	THE TORNADO TOUCHED DOWN ALONG COUNTY ROAD 267, JUST NORTH OF THE ENDING PATH OF THE WHITE PLAINS TORNADO. THE PATHS DID NOT JOIN UP AT ANY POINT AS BOTH DAMAGE WIDTHS WERE RELATIVELY SMALL. DAMAGE AT COUNTY ROAD 267 INCLUDED SEVERAL SHEARED SOFTWOOD TREE TOPS
Apr 27, 9:29 PM CDT	TORNADO 1	3 Se Stroud, AL	THE TORNADO TOUCHED DOWN ALONG COUNTY ROAD 267, JUST NORTH OF THE ENDING PATH OF THE WHITE PLAINS TORNADO. THE PATHS DID NOT JOIN UP AT ANY POINT AS BOTH DAMAGE WIDTHS WERE RELATIVELY SMALL. DAMAGE AT COUNTY ROAD 267 INCLUDED SEVERAL SHEARED SOFTWOOD TREE TOPS

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, 5:52 PM CDT	Tornado Watch PDS	SPC	9 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 2.0 hours before the alert went out and 96 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: 1215 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1433 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 244 m²/s²
0-3 km storm-relative helicity: 408 m²/s²
Significant tornado parameter: 1.6
Supercell composite: 15.2

Open this sounding in Storm Lab

The text

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

935 
WFUS54 KBMX 280200
TORBMX
ALC017-280300-
/O.NEW.KBMX.TO.W.0135.110428T0200Z-110428T0300Z/

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

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  CHAMBERS COUNTY IN EAST CENTRAL ALABAMA...

* UNTIL 1000 PM CDT

* AT 900 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A   
CONFIRMED TORNADO NEAR CAMP HILL THAT HAS PRODUCED DAMAGE ON THE 
GROUND. DOPPLER RADAR SHOWED THIS TORNADO MOVING NORTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LAFAYETTE...STROUD...LANETT...VALLEY...RIDGE GROVE...WEST
  CHAMBERS...STURKIE...OAK BOWERY...TRAMMEL CROSSROADS AND PENTON.

THIS INCLUDES...
INTERSTATE 85 EXIT NUMBERS 77 THROUGH 79...

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 3275 8513 3274 8541 3275 8542 3273 8559
      3299 8560 3312 8523 3283 8516 3281 8515
      3279 8512
TIME...MOT...LOC 0200Z 246DEG 42KT 3287 8560

$$

17

2 follow-up statements

367 
WWUS54 KBMX 280205
SVSBMX

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

ALC017-280300-
/O.CON.KBMX.TO.W.0135.000000T0000Z-110428T0300Z/
CHAMBERS AL-
905 PM CDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR CHAMBERS COUNTY UNTIL 1000
PM CDT...

...TORNADO EMERGENCY CONTINUES FOR RIDGE GROVE...BUFFALO...NORTHERN 
LAYFETTE...WHITE PLAINS AND PENTON...

AT 900 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
CONFIRMED TORNADO.  THIS TORNADO WAS LOCATED NEAR RIDGE GROVE...OR 5
MILES NORTHEAST OF CAMP HILL...MOVING NORTHEAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  LAFAYETTE...STROUD...LANETT...WEST CHAMBERS...TRAMMEL CROSSROADS...
  PENTON...CHAMBERS COUNTY LAKE...BUFFALO...WHITE PLAINS AND KELLAM
  HILL.

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

LAT...LON 3282 8539 3280 8559 3299 8560 3312 8523
      3310 8522 3308 8522 3290 8518 3287 8516
      3286 8517
TIME...MOT...LOC 0204Z 244DEG 43KT 3289 8555

$$

17

545 
WWUS54 KBMX 280222
SVSBMX

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

ALC017-280300-
/O.CON.KBMX.TO.W.0135.000000T0000Z-110428T0300Z/
CHAMBERS AL-
922 PM CDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL CHAMBERS COUNTY
UNTIL 1000 PM CDT...

AT 919 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
CONFIRMED TORNADO.  THIS TORNADO WAS LOCATED NEAR BUFFALO...OR NEAR
LAFAYETTE...MOVING NORTHEAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  STROUD...FREDONIA...POST OAK FORKS...VEASEY CREEK PARK...AMITY
  PARK...STROUD CREEK AND ROCKY POINT.

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

LAT...LON 3292 8531 3289 8545 3303 8548 3312 8523
      3310 8522 3308 8522 3296 8519
TIME...MOT...LOC 0222Z 243DEG 40KT 3298 8534

$$

17!

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 7:07 PM CDT	Tornado Warning Emergency	BMX	Bibb, Chilton, Shelby	53 min
Apr 27, 7:17 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Marion, Walker, Winston	43 min
Apr 27, 7:17 PM CDT	Tornado Warning Emergency	BMX	Calhoun, Cherokee, Etowah	43 min
Apr 27, 7:28 PM CDT	Tornado Warning	BMX	Hale, Marengo, Sumter	62 min
Apr 27, 7:31 PM CDT	Tornado Warning	BMX	Calhoun, Cleburne, Etowah, St. Clair, Shelby, Talladega	59 min
Apr 27, 7:33 PM CDT	Tornado Warning	BMX	Autauga, Coosa, Elmore, Tallapoosa	57 min
Apr 27, 7:54 PM CDT	Tornado Warning	BMX	St. Clair, Shelby, Talladega	51 min
Apr 27, 8:02 PM CDT	Tornado Warning	BMX	Clay, Cleburne, Coosa, Randolph, Tallapoosa	58 min
Apr 27, 8:03 PM CDT	Tornado Warning	BMX	Blount	15 min
Apr 27, 8:11 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Sumter	64 min
Apr 27, 8:17 PM CDT	Tornado Warning	BMX	Dallas, Hale, Marengo, Perry	58 min
Apr 27, 8:18 PM CDT	Tornado Warning	BMX	Calhoun, Cherokee, Cleburne	42 min
Apr 27, 8:20 PM CDT	Tornado Warning Emergency	BMX	Chambers, Elmore, Lee, Tallapoosa	55 min
Apr 27, 8:21 PM CDT	Tornado Warning	BMX	Calhoun, St. Clair, Talladega	21 min
Apr 27, 9:03 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee	42 min
Apr 27, 9:03 PM CDT	Tornado Warning	BMX	Autauga, Chilton, Dallas, Perry	57 min
Apr 27, 9:36 PM CDT	Severe Thunderstorm Warning	BMX	Dallas, Hale, Marengo, Perry	54 min
Apr 27, 9:37 PM CDT	Tornado Warning	BMX	Chambers, Lee, Tallapoosa	38 min
Apr 27, 9:46 PM CDT	Tornado Warning	BMX	Chilton, Coosa, Tallapoosa	37 min
Apr 27, 9:51 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Etowah	39 min
Apr 27, 9:55 PM CDT	Areal Flood Advisory	BMX	Dallas, Marengo, Perry	3 hr
Apr 27, 10:18 PM CDT	Severe Thunderstorm Warning	BMX	Lee	27 min
Apr 27, 10:31 PM CDT	Tornado Warning	BMX	Lee	12 min
Apr 27, 10:39 PM CDT	Severe Thunderstorm Warning	BMX	Chambers, Clay, Coosa, Elmore, Randolph, Tallapoosa	49 min
Apr 27, 11:15 PM CDT	Severe Thunderstorm Warning	BMX	Dallas, Lowndes	45 min
Apr 27, 11:31 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Elmore, Lowndes, Montgomery	44 min
Apr 28, 12:01 AM CDT	Severe Thunderstorm Warning	BMX	Autauga, Bullock, Elmore, Lee, Lowndes, Macon and 3 more	49 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.