Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 117, NWS Birmingham, AL

April 27, 2011Greene County, Marengo County, Sumter County, Alabama

NWS Birmingham, AL issued this tornado warning at Apr 27, 2011, 6:06 PM CDT for Greene County, Marengo County, Sumter County, Alabama. It was in force for 16 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 27, 2011, 6:06 PM CDT (23:06 UTC)
Expired: Apr 27, 2011, 6:22 PM CDT
In force: 16 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Greene County, AL, Marengo County, AL, Sumter County, AL

The radar

The Birmingham radar (KBMX), 119 km from the middle of the area, began a volume at 23:09 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.

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, 1:42 PM CDT	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 11.1 hours before the alert went out and 118 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 587 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: -359 m²/s²
0-3 km storm-relative helicity: -197 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

773 
WFUS54 KBMX 272306
TORBMX
ALC063-091-119-280000-
/O.NEW.KBMX.TO.W.0117.110427T2306Z-110428T0000Z/

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

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN GREENE COUNTY IN WEST CENTRAL ALABAMA...
  NORTHWESTERN MARENGO COUNTY IN SOUTHWEST ALABAMA...
  SUMTER COUNTY IN WEST CENTRAL ALABAMA...

* UNTIL 700 PM CDT

* AT 604 PM CDT...LOCAL LAW ENFORCEMENT REPORTED A TORNADO 16 MILES
  WEST OF CUBA. DOPPLER RADAR SHOWED THIS TORNADO MOVING NORTHEAST AT
  50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CUBA...YORK...LIVINGSTON...EUTAW...DEMOPOLIS...BOYD...EMELLE...THE
  UNIVERSITY OF WEST ALABAMA...COATOPA AND BLUFFPORT.

THIS INCLUDES...
INTERSTATE 20 EXIT NUMBERS 1 THROUGH 40...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPEAT...A TORNADO IS ON THE GROUND. 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 3273 8838 3293 8789 3280 8782 3276 8787
      3277 8782 3275 8781 3272 8783 3271 8779
      3266 8778 3266 8774 3264 8781 3259 8774
      3257 8776 3258 8779 3253 8781 3252 8773
      3249 8772 3247 8765 3236 8843
TIME...MOT...LOC 2306Z 247DEG 42KT 3245 8862

$$

17

1 follow-up statement

394 
WWUS54 KBMX 272322
SVSBMX

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

ALC063-091-119-272332-
/O.CAN.KBMX.TO.W.0117.000000T0000Z-110428T0000Z/
MARENGO AL-SUMTER AL-GREENE AL-
622 PM CDT WED APR 27 2011

...THE TORNADO WARNING FOR...SUMTER AND NORTHWESTERN MARENGO 
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 3273 8838 3293 8789 3280 8782 3276 8787
      3277 8782 3275 8781 3272 8783 3271 8779
      3266 8778 3266 8774 3264 8781 3259 8774
      3257 8776 3258 8779 3253 8781 3252 8773
      3249 8772 3247 8765 3236 8843
TIME...MOT...LOC 2322Z 247DEG 42KT 3251 8841

$$

17

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 3:37 AM CDT	Tornado Warning	BMX	Lamar, Pickens	38 min
Apr 27, 3:45 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	45 min
Apr 27, 3:59 AM CDT	Severe Thunderstorm Warning	BMX	Greene, Lamar, Pickens, Sumter	46 min
Apr 27, 4:13 AM CDT	Tornado Warning	BMX	Pickens	32 min
Apr 27, 4:14 AM CDT	Tornado Warning	BMX	Greene, Pickens, Sumter	31 min
Apr 27, 4:19 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	41 min
Apr 27, 4:26 AM CDT	Tornado Warning	BMX	Marion	34 min
Apr 27, 4:28 AM CDT	Severe Thunderstorm Warning	BMX	Greene, Marengo, Sumter	47 min
Apr 27, 4:33 AM CDT	Tornado Warning	BMX	Fayette, Pickens, Tuscaloosa	27 min
Apr 27, 4:40 AM CDT	Severe Thunderstorm Warning	BMX	Fayette, Greene, Hale, Lamar, Pickens, Tuscaloosa	50 min
Apr 27, 4:44 AM CDT	Tornado Warning	BMX	Pickens, Tuscaloosa	31 min
Apr 27, 5:07 AM CDT	Tornado Warning	BMX	Fayette, Walker	38 min
Apr 27, 5:11 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Blount, Fayette, Hale, Jefferson, Shelby and 2 more	49 min
Apr 27, 5:14 AM CDT	Tornado Warning	BMX	Jefferson, Tuscaloosa, Walker	31 min
Apr 27, 5:29 AM CDT	Tornado Warning	BMX	Bibb, Jefferson, Shelby, Tuscaloosa	31 min
Apr 27, 5:44 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Dallas, Perry, Shelby	46 min
Apr 27, 5:52 AM CDT	Severe Thunderstorm Warning	BMX	Blount, Chilton, Etowah, Jefferson, St. Clair, Shelby and 1 more	53 min
Apr 27, 6:02 AM CDT	Special Weather Statement	BMX	Autauga, Chilton, Dallas	43 min
Apr 27, 6:21 AM CDT	Severe Thunderstorm Warning	BMX	Blount, Calhoun, Cherokee, Clay, Cleburne, Coosa and 3 more	39 min
Apr 27, 6:49 AM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Clay, Cleburne, Etowah, Randolph and 1 more	56 min
Apr 27, 8:05 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	25 min
Apr 27, 8:20 AM CDT	Severe Thunderstorm Warning	BMX	Marion	25 min
Apr 27, 10:04 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	41 min
Apr 27, 10:42 AM CDT	Special Weather Statement	BMX	Lamar, Marion, Winston	48 min
Apr 27, 10:51 AM CDT	Areal Flood Advisory	BMX	Marion	54 min
Apr 27, 12:08 PM CDT	Areal Flood Advisory	BMX	Marion, Winston	112 min
Apr 27, 2:09 PM CDT	Tornado Warning	BMX	Walker, Winston	31 min
Apr 27, 2:17 PM CDT	Areal Flood Advisory	BMX	Marion, Winston	118 min
Apr 27, 2:51 PM CDT	River Flood Warning	BMX	Greene, Hale, Marengo, Sumter	19 hr
Apr 27, 2:51 PM CDT	River Flood Warning	BMX	Greene, Hale, Marengo, Sumter	6 hr
Apr 27, 2:59 PM CDT	Tornado Warning	BMX	Lamar, Marion	46 min
Apr 27, 3:15 PM CDT	Tornado Warning Emergency	BMX	Pickens, Tuscaloosa	60 min
Apr 27, 3:21 PM CDT	Tornado Warning	BMX	Lamar, Marion	54 min
Apr 27, 3:38 PM CDT	Tornado Warning Emergency	BMX	Greene, Hale, Pickens, Sumter, Tuscaloosa	67 min
Apr 27, 3:56 PM CDT	Tornado Warning	BMX	Marion	34 min
Apr 27, 3:57 PM CDT	Flash Flood Warning	BMX	Marion, Winston	3 hr
Apr 27, 4:00 PM CDT	Tornado Warning Emergency	BMX	Fayette, Pickens, Tuscaloosa, Walker	60 min
Apr 27, 4:31 PM CDT	Tornado Warning	BMX	Pickens, Tuscaloosa	20 min
Apr 27, 4:44 PM CDT	Tornado Warning	BMX	Fayette, Lamar, Marion	61 min
Apr 27, 4:47 PM CDT	Tornado Warning Emergency	BMX	Greene, Pickens, Tuscaloosa	58 min
Apr 27, 4:50 PM CDT	Tornado Warning	BMX	Greene, Hale, Sumter	55 min
Apr 27, 4:55 PM CDT	Tornado Warning Emergency	BMX	Blount, Jefferson, Walker	65 min
Apr 27, 5:22 PM CDT	Tornado Warning	BMX	Fayette, Lamar	68 min
Apr 27, 5:28 PM CDT	Tornado Warning	BMX	Marion, Winston	30 min
Apr 27, 5:31 PM CDT	Tornado Warning Emergency	BMX	Jefferson, Shelby, Tuscaloosa	59 min
Apr 27, 5:38 PM CDT	Tornado Warning Emergency	BMX	Bibb, Greene, Hale, Perry, Tuscaloosa	67 min
Apr 27, 5:39 PM CDT	Tornado Warning	BMX	Blount	21 min
Apr 27, 6:14 PM CDT	Tornado Warning	BMX	Fayette, Marion, Walker, Winston	61 min
Apr 27, 6:17 PM CDT	Areal Flood Advisory	BMX	Jefferson	118 min
Apr 27, 6:18 PM CDT	Tornado Warning	BMX	Blount, Jefferson, St. Clair	57 min
Apr 27, 6:20 PM CDT	Tornado Warning	BMX	Bibb, Chilton, Greene, Hale, Perry	55 min
Apr 27, 6:33 PM CDT	Areal Flood Warning	BMX	Marion, Winston	3 hr
Apr 27, 6:35 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Marion, Walker, Winston	40 min
Apr 27, 6:39 PM CDT	Flash Flood Warning	BMX	Blount, Jefferson, St. Clair	3 hr
Apr 27, 6:39 PM CDT	Tornado Warning Emergency	BMX	Bibb, Chilton, Shelby, Talladega	66 min
Apr 27, 6:49 PM CDT	Tornado Warning Emergency	BMX	Blount, Calhoun, Etowah, St. Clair	56 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.