Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 47, NWS Birmingham, AL

April 15, 2011Marengo County, Alabama

NWS Birmingham, AL issued this tornado warning at Apr 15, 2011, 12:24 PM CDT for Marengo County, Alabama. It was in force for 51 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 15, 2011, 12:24 PM CDT (17:24 UTC)
Expired: Apr 15, 2011, 1:15 PM CDT
In force: 51 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

County Marengo County, AL

The radar

The Birmingham radar (KBMX), 139 km from the middle of the area, began a volume at 17:24 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 15, 12:35 PM CDT	TORNADO	Nanafalia, AL	TREES DOWN. TORNADO SEEN ON THE GROUND BY LAW ENFORCEMENT.
Apr 15, 1:18 PM CDT	TSTM WND DMG	5 Sw Uniontown, AL	TREES DOWW 3 WSW OF FREETOWN. POSSIBLE TORNADO.
Apr 15, 1:18 PM CDT	TSTM WND DMG	5 Sw Uniontown, AL	TREES DOWW 3 WSW OF FREETOW. POSSIBLE TORNADO.

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 15, 7:32 AM CDT	Tornado Watch	SPC	7 hr
Apr 15, 11:21 AM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 5.4 hours before the alert went out and 140 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: 1553 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 282 m²/s²
0-3 km storm-relative helicity: 365 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

262 
WFUS54 KBMX 151724
TORBMX
ALC091-151815-
/O.NEW.KBMX.TO.W.0047.110415T1724Z-110415T1815Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1224 PM CDT FRI APR 15 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL MARENGO COUNTY IN SOUTHWEST ALABAMA...

* UNTIL 115 PM CDT

* AT 1219 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A
  CONFIRMED TORNADO NEAR NANAFALIA...OR 17 MILES SOUTHWEST OF LINDEN.
  DOPPLER RADAR SHOWED THIS TORNADO MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LINDEN...SWEET WATER...MYRTLEWOOD...WAYNE...MILLER...THOMASTON...
  DAYTON...CONSUL...HALF ACRE AND CALVARY.

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 3214 8805 3217 8801 3223 8801 3245 8757
      3237 8752 3232 8753 3231 8749 3228 8747
      3226 8751 3221 8752 3202 8801 3209 8806
TIME...MOT...LOC 1724Z 243DEG 29KT 3215 8796

$$

08

2 follow-up statements

773 
WWUS54 KBMX 151741
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1241 PM CDT FRI APR 15 2011

ALC091-151815-
/O.CON.KBMX.TO.W.0047.000000T0000Z-110415T1815Z/
MARENGO AL-
1241 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL MARENGO COUNTY
UNTIL 115 PM CDT...

AT 1238 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A CONFIRMED TORNADO.  THIS TORNADO WAS LOCATED NEAR MILLER...OR 6
MILES SOUTH OF LINDEN...MOVING NORTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  LINDEN...THOMASTON...DAYTON...CONSUL...CALVARY...OCTAGON AND
  PROVIDENCE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

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

LAT...LON 3226 8795 3245 8757 3238 8752 3232 8753
      3231 8749 3228 8747 3226 8751 3221 8752
      3210 8783 3220 8789
TIME...MOT...LOC 1740Z 240DEG 32KT 3222 8781

$$

08

793 
WWUS54 KBMX 151753
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1253 PM CDT FRI APR 15 2011

ALC091-151815-
/O.CON.KBMX.TO.W.0047.000000T0000Z-110415T1815Z/
MARENGO AL-
1253 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR EAST CENTRAL MARENGO
COUNTY UNTIL 115 PM CDT...

AT 1251 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A CONFIRMED TORNADO.  THIS TORNADO WAS LOCATED NEAR THOMASTON...OR 6
MILES SOUTHEAST OF LINDEN...MOVING NORTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  THOMASTON...DAYTON AND CONSUL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

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

LAT...LON 3245 8757 3238 8752 3232 8753 3231 8749
      3228 8747 3226 8751 3221 8752 3220 8772
      3223 8782 3230 8782
TIME...MOT...LOC 1753Z 240DEG 32KT 3227 8769

$$

08

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 3:29 AM CDT	Wind Advisory	BMX	Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more	22 hr
Apr 15, 8:49 AM CDT	Special Weather Statement	BMX	Marion	41 min
Apr 15, 8:55 AM CDT	Special Weather Statement	BMX	Lamar	50 min
Apr 15, 9:49 AM CDT	Areal Flood Advisory	BMX	Lamar	116 min
Apr 15, 9:53 AM CDT	Special Weather Statement	BMX	Fayette, Marion	37 min
Apr 15, 10:11 AM CDT	Flash Flood Warning	BMX	Lamar	6 hr
Apr 15, 10:37 AM CDT	Special Weather Statement	BMX	Pickens	38 min
Apr 15, 10:51 AM CDT	Special Weather Statement	BMX	St. Clair	39 min
Apr 15, 10:59 AM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, St. Clair	46 min
Apr 15, 11:12 AM CDT	Areal Flood Advisory	BMX	Fayette, Walker, Winston	2 hr
Apr 15, 11:52 AM CDT	Tornado Warning	BMX	Marengo	38 min
Apr 15, 12:15 PM CDT	Severe Thunderstorm Warning	BMX	Lamar, Pickens	34 min
Apr 15, 12:36 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, St. Clair	27 min
Apr 15, 12:59 PM CDT	Tornado Warning	BMX	Dallas, Marengo, Perry	46 min
Apr 15, 1:10 PM CDT	Flash Flood Warning	BMX	Fayette, Lamar, Marion, Walker, Winston	3 hr
Apr 15, 1:22 PM CDT	Areal Flood Advisory	BMX	Blount	3 hr
Apr 15, 1:25 PM CDT	Tornado Warning Emergency	BMX	Greene, Sumter	65 min
Apr 15, 1:43 PM CDT	Tornado Warning	BMX	Perry	28 min
Apr 15, 2:14 PM CDT	River Flood Warning	BMX	Greene, Hale, Marengo, Pickens, Sumter	4 days
Apr 15, 2:14 PM CDT	River Flood Warning	BMX	Greene, Hale, Marengo, Sumter	20 hr
Apr 15, 2:14 PM CDT	River Flood Warning	BMX	Greene, Hale, Marengo, Sumter	20 hr
Apr 15, 2:17 PM CDT	River Flood Warning	BMX	Greene, Hale, Marengo	4 days
Apr 15, 2:24 PM CDT	Tornado Warning Emergency	BMX	Greene, Hale, Tuscaloosa	51 min
Apr 15, 2:31 PM CDT	Tornado Warning	BMX	Marengo, Sumter	29 min
Apr 15, 2:39 PM CDT	Flash Flood Warning	BMX	Greene, Pickens, Sumter	3 hr
Apr 15, 2:41 PM CDT	Tornado Warning	BMX	Greene, Tuscaloosa	64 min
Apr 15, 2:49 PM CDT	Tornado Warning	BMX	Greene, Hale, Sumter	41 min
Apr 15, 2:56 PM CDT	Tornado Warning	BMX	Greene, Hale, Marengo, Perry, Sumter	49 min
Apr 15, 3:10 PM CDT	Tornado Warning	BMX	Greene, Hale, Tuscaloosa	50 min
Apr 15, 3:25 PM CDT	Flash Flood Warning	BMX	Tuscaloosa	3 hr
Apr 15, 3:27 PM CDT	Tornado Warning	BMX	Greene, Hale, Tuscaloosa	48 min
Apr 15, 3:32 PM CDT	Tornado Warning	BMX	Sumter	58 min
Apr 15, 3:34 PM CDT	Tornado Warning	BMX	Lowndes, Montgomery	56 min
Apr 15, 3:39 PM CDT	Tornado Warning	BMX	Bibb, Hale, Perry, Tuscaloosa	66 min
Apr 15, 3:44 PM CDT	Tornado Warning	BMX	Jefferson, Tuscaloosa	37 min
Apr 15, 3:57 PM CDT	Areal Flood Warning	BMX	Lamar	24 hr
Apr 15, 4:18 PM CDT	Tornado Warning	BMX	Greene, Hale, Sumter	57 min
Apr 15, 4:21 PM CDT	Tornado Warning	BMX	Lamar	39 min
Apr 15, 4:28 PM CDT	Tornado Warning	BMX	Bibb, Jefferson, Shelby	62 min
Apr 15, 4:33 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, Shelby, Tuscaloosa	42 min
Apr 15, 4:41 PM CDT	Tornado Warning	BMX	Marengo, Sumter	64 min
Apr 15, 4:42 PM CDT	Tornado Warning	BMX	Bibb, Tuscaloosa	33 min
Apr 15, 4:45 PM CDT	Tornado Warning	BMX	Fayette, Lamar, Marion	26 min
Apr 15, 5:08 PM CDT	Severe Thunderstorm Warning	BMX	Lamar	52 min
Apr 15, 5:09 PM CDT	Flash Flood Warning	BMX	Jefferson, Shelby	3 hr
Apr 15, 5:13 PM CDT	Tornado Warning	BMX	Bibb, Hale, Perry	35 min
Apr 15, 5:18 PM CDT	Tornado Warning	BMX	Lamar	30 min
Apr 15, 5:26 PM CDT	Tornado Warning	BMX	St. Clair, Shelby, Talladega	49 min
Apr 15, 5:30 PM CDT	Tornado Warning	BMX	Hale, Marengo, Perry, Sumter	60 min
Apr 15, 5:38 PM CDT	Severe Thunderstorm Warning	BMX	Lamar	22 min
Apr 15, 5:45 PM CDT	Severe Thunderstorm Warning	BMX	Chambers, Lee, Macon	45 min
Apr 15, 5:47 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Marion	45 min
Apr 15, 5:55 PM CDT	Tornado Warning	BMX	Lowndes, Montgomery	46 min
Apr 15, 6:08 PM CDT	Tornado Warning	BMX	Calhoun, Clay, Cleburne, Talladega	52 min
Apr 15, 6:11 PM CDT	Tornado Warning	BMX	Dallas, Perry	64 min
Apr 15, 6:12 PM CDT	Tornado Warning	BMX	Lee	21 min
Apr 15, 6:15 PM CDT	Tornado Warning	BMX	Dallas, Lowndes	60 min
Apr 15, 6:17 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Walker	43 min
Apr 15, 6:19 PM CDT	Tornado Warning	BMX	Marengo	56 min
Apr 15, 6:43 PM CDT	Areal Flood Advisory	BMX	Talladega	3 hr
Apr 15, 6:53 PM CDT	Tornado Warning	BMX	Calhoun, Clay, Cleburne, Talladega	31 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; radar from the NEXRAD Level II archive.