Alert archive / Alabama / Tornado Warnings in 2011
Tornado Warning 99, NWS Birmingham, AL
NWS Birmingham, AL issued this tornado warning at Apr 27, 2011, 5:29 AM CDT for 4 counties in Alabama. It was in force for 31 min. 23 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, 5:29 AM CDT (10:29 UTC)
- Expired
- Apr 27, 2011, 6:00 AM CDT
- In force
- 31 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
Counties Bibb County, AL, Jefferson County, AL, Shelby County, AL, Tuscaloosa County, AL
The radar
The Birmingham radar (KBMX), 32 km from the middle of the area, began a volume at 10:31 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 | Remark |
|---|---|---|---|
| Apr 27, 5:31 AM CDT | TSTM WND DMG | 3 N Woodstock Junction, AL | TRACTOR TRAILERS OVERTURNED AND TREES UPROOTED NEAR MILE MARKER 93 ON INTERSTATE 20/59. |
| Apr 27, 5:31 AM CDT | TSTM WND DMG | Woodstock Junction, AL | NUMEROUS TREES DOWN AND ROADS CLOSED IN NORTHERN BIBB. SEVERAL STRUCUTRES ALSO DAMAGED. |
| Apr 27, 5:35 AM CDT | TSTM WND DMG | Bucksville, AL | TREES AND POWER LINES DOWN ON TINLGE SPRINGS CIRCLE NEAR EXIT 100 ON INTERSTATE 20/59. |
| Apr 27, 5:38 AM CDT | TSTM WND DMG | 3 S Mcadory, AL | NUMEROUS TREES DOWN IN THE MCCALLA AREA. |
| Apr 27, 5:40 AM CDT | TSTM WND DMG | 7 S Bessemer, AL | TREES AND POWERLINES DOWN NEAR SHADES CREST ROAD AND BLUFF RIDGE ROAD. |
| Apr 27, 5:40 AM CDT | TSTM WND DMG | Ensley, AL | TWO LARGE BROADCAST RADIO TOWERS REPORTED DOWN NEAR THE FAIRGROUNDS. |
| Apr 27, 5:40 AM CDT | TSTM WND DMG | Hueytown, AL | TREES DOWN ON HOUSES AND BLOCKING ROADWAYS. |
| Apr 27, 5:46 AM CDT | TSTM WND DMG | Helena, AL | TREES DOWN ON HIGHWAY 261 IN HELENA. |
| Apr 27, 5:49 AM CDT | TSTM WND DMG | Vestavia Hills, AL | NUMEROUS TREES DOWN IN VESTAVIA. |
| Apr 27, 5:49 AM CDT | TSTM WND DMG | Vestavia Hills, AL | NUMEROUS TREES DOWN IN VESTAVIA. SEVERAL HOMES AND VEHICLES ARE DAMAGED. |
| Apr 27, 5:50 AM CDT | TORNADO 1 | 5 E Hoover, AL | A TORNADO TOUCHED DOWN JUST WEST OF THE INTERSECTION OF VALLEYDALE ROAD AND CALDWELL MILL ROAD. IT MOVED NORTH-NORTHEAST ACROSS A LARGE RESIDENTIAL AREA AND SNAPPED NUMEROUS TREES. THE TREES FELL ON POWER LINES...HOUSES...APARTMENTS...AND VEHICLES. THE HEAVIES |
| Apr 27, 5:53 AM CDT | TSTM WND DMG | 5 Se Homewood, AL | SIGNIFICANT DAMAGE IN THE ALTADENA LAKE AREA.. ALTADENA LAKE DR AT REDWING DR., CAMP HORNER RD AT CALDWELL MILL RD., AND CAHABA RIVER BRIDGE AT CALDWELL MILL RD. |
| Apr 27, 5:54 AM CDT | TSTM WND DMG | 5 E Vestavia Hills, AL | SEVERAL TREES SNAPPED OFF AND HOME ROOF DAMAGE IN THE BROOKHIGHLAND SUBDIVISION OFF HIGHWAY 280. |
| Apr 27, 5:54 AM CDT | TSTM WND DMG | 5 E Vestavia Hills, AL | SEVERAL TREES SNAPPED OFF AND HOME ROOF DAMAGE IN THE BROOKHIGHLAND SUBDIVISION OFF HIGHWAY 280. AT LEAST 100 HOMES WITH TREES ON THEM IN THE CAHABA HEIGHTS AND VESTAVIA AREA. |
| Apr 27, 5:54 AM CDT | TSTM WND DMG | Birmingham, AL | MARQUEE SIGN AT THE BJCC BLOWN DOWN. |
| Apr 27, 5:54 AM CDT | TORNADO 2 | 3 Se Homewood, AL | AN EF-2 TORNADO TOUCHED DOWN NEAR GRESHAM HIGH SCHOOL IN THE MOUNTAIN BROOK/VESTAVIA HILLS AREA AND MOVED NE ACROSS SE JEFFERSON COUNTY ACROSS CAHABA HEIGHTS. HUNDREDS OF TREES WERE SNAPPED OR UPROOTED AND SIGNIFICANTLY DAMAGING SEVERAL HOMES. THE TRACK WAS 7. |
| Apr 27, 5:55 AM CDT | TSTM WND DMG | 4 S Homewood, AL | TREE DOWN ON HOUSE OF A NWS EMPLOYEE. |
| Apr 27, 5:56 AM CDT | TSTM WND DMG | 1 Ne Cahaba Heights, AL | NUMEROUS TREES SNAPPED AND UPROOTED IN CAHABA HEIGHTS |
| Apr 27, 6:00 AM CDT | TSTM WND DMG | 3 Ne Vestavia Hills, AL | *** 1 FATAL *** TREES AND POWER LINES DOWN ACROSS CITY. TREE FELL ON HOUSE AND CAUSED ONE FATALITY. |
| Apr 27, 6:00 AM CDT | TSTM WND DMG | 3 Ne Vestavia Hills, AL | TREES AND POWER LINES DOWN ON SHADY WATERS LANE. |
| Apr 27, 6:00 AM CDT | TSTM WND DMG | Birmingham, AL | 2ND AVENUE NORTH IS IMPASSABLE DUE TO DOWNED TREES IN THE ROADWAY. |
| Apr 27, 6:00 AM CDT | TSTM WND DMG | Birmingham, AL | ROOF TORN OFF A LARGE HANGAR AT THE BIRMINGHAM SHUTTLESWORTH INTERNATIONAL AIRPORT. |
| Apr 27, 6:00 AM CDT | TSTM WND GST 56 | Birmingham, 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 |
|---|---|---|---|
| Apr 27, 2:26 AM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Birmingham, AL (KBMX), launched 00:00Z, 10.5 hours before the alert went out and 31 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.
- Mixed-layer CAPE
- 1044 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 1119 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 181 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 5.8
The text
As transmitted, in the capitals the NWS used until 2016.
554 WFUS54 KBMX 271029 TORBMX ALC007-073-117-125-271100- /O.NEW.KBMX.TO.W.0099.110427T1029Z-110427T1100Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 529 AM CDT WED APR 27 2011 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A * TORNADO WARNING FOR... NORTH CENTRAL BIBB COUNTY IN CENTRAL ALABAMA... SOUTHERN JEFFERSON COUNTY IN CENTRAL ALABAMA... CENTRAL SHELBY COUNTY IN CENTRAL ALABAMA... EAST CENTRAL TUSCALOOSA COUNTY IN WEST CENTRAL ALABAMA... * UNTIL 600 AM CDT * AT 529 AM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR WOODSTOCK JUNCTION...OR 17 MILES SOUTHWEST OF BESSEMER...AND MOVING NORTHEAST AT 70 MPH. * THIS DANGEROUS STORM WILL BE NEAR... BESSEMER AND ALABAMA ADVENTURE AROUND 540 AM CDT. RIVERCHASE GALLERIA...HOOVER...REGIONS PARK OR HOOVER MET AND RIVERCHASE AROUND 545 AM CDT. INDIAN SPRINGS VILLAGE...VESTAVIA HILLS...OAK MOUNTAIN STATE PARK AND SAMFORD UNIVERSITY AROUND 550 AM CDT. OTHER LOCATIONS IMPACTED BY THIS DANGEROUS STORM INCLUDE MCCALLA... MCADORY...BESSEMER AIRPORT...JOE TUCKER PARK...SHANNON AND GOAT ISLAND AT LAKE PURDY. PRECAUTIONARY/PREPAREDNESS ACTIONS... MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST RESORT...EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR VEHICLE AND LIE DOWN IN A LOW LYING AREA. HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW. THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. && TO REPORT SEVERE WEATHER... CALL 1-800-856-0758. LAT...LON 3365 8683 3341 8658 3312 8720 3328 8729 TIME...MOT...LOC 1029Z 245DEG 60KT 3324 8713 $$ 75
2 follow-up statements
751
WWUS54 KBMX 271041
SVSBMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
541 AM CDT WED APR 27 2011
ALC007-125-271051-
/O.CAN.KBMX.TO.W.0099.000000T0000Z-110427T1100Z/
BIBB AL-TUSCALOOSA AL-
541 AM CDT WED APR 27 2011
...THE TORNADO WARNING FOR EAST CENTRAL TUSCALOOSA AND NORTH CENTRAL
BIBB COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.
LAT...LON 3344 8710 3364 8684 3363 8681 3341 8658
3323 8696
TIME...MOT...LOC 1041Z 241DEG 57KT 3335 8694
$$
ALC073-117-271100-
/O.CON.KBMX.TO.W.0099.000000T0000Z-110427T1100Z/
SHELBY AL-JEFFERSON AL-
541 AM CDT WED APR 27 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN JEFFERSON AND
CENTRAL SHELBY COUNTIES UNTIL 600 AM CDT...
AT 540 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR BESSEMER...MOVING NORTHEAST AT 65 MPH.
LOCATIONS IMPACTED INCLUDE...
HELENA...FAIRFIELD...HOOVER...VESTAVIA HILLS...HOMEWOOD...
BIRMINGHAM...MOUNTAIN BROOK...FULTONDALE...BRIGHTON AND MADISON.
THIS INCLUDES...
INTERSTATE 65 EXIT NUMBERS 246 THROUGH 266...
INTERSTATE 459 EXIT NUMBERS 1 THROUGH 23...
US 78 EXIT NUMBER 91...
INTERSTATE 20 EXIT NUMBERS 106 THROUGH 132...
INTERSTATE 59 EXIT NUMBER 130...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT... EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR
VEHICLE AND LIE DOWN IN A LOW LYING AREA.
HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR
THE TORNADO. TAKE COVER NOW.
THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.
&&
TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.
LAT...LON 3344 8710 3364 8684 3363 8681 3341 8658
3323 8696
TIME...MOT...LOC 1041Z 241DEG 57KT 3335 8694
$$
75024
WWUS54 KBMX 271054
SVSBMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
554 AM CDT WED APR 27 2011
ALC073-117-271103-
/O.EXP.KBMX.TO.W.0099.000000T0000Z-110427T1100Z/
SHELBY AL-JEFFERSON AL-
554 AM CDT WED APR 27 2011
...THE TORNADO WARNING FOR SOUTHERN JEFFERSON AND CENTRAL SHELBY
COUNTIES WILL EXPIRE AT 600 AM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR
JEFFERSON AND SHELBY COUNTY UNTIL 645 AM CDT.
TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.
LAT...LON 3344 8710 3364 8684 3363 8681 3341 8658
3323 8696
TIME...MOT...LOC 1053Z 241DEG 57KT 3344 8674
$$
58/02The 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, 5:44 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 | 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 | 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 | 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 | 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 | 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 | BMX | Jefferson, Shelby, Tuscaloosa | 59 min |
| Apr 27, 5:38 PM CDT | Tornado Warning | BMX | Bibb, Greene, Hale, Perry, Tuscaloosa | 67 min |
| Apr 27, 5:39 PM CDT | Tornado Warning | BMX | Blount | 21 min |
| Apr 27, 6:06 PM CDT | Tornado Warning | BMX | Greene, Marengo, Sumter | 16 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 | BMX | Bibb, Chilton, Shelby, Talladega | 66 min |
| Apr 27, 6:49 PM CDT | Tornado Warning | BMX | Blount, Calhoun, Etowah, St. Clair | 56 min |
Nearby
Tornado Warnings in Alabama, 2011Every tornado warning in 2011Tornadoes 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; radar from the NEXRAD Level II archive.