Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 46, NWS Birmingham, AL

April 15, 2011Marengo County, Alabama

NWS Birmingham, AL issued this tornado warning at Apr 15, 2011, 11:52 AM CDT for Marengo County, Alabama. It was in force for 38 min. 2 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, 11:52 AM CDT (16:52 UTC)
Expired: Apr 15, 2011, 12:30 PM CDT
In force: 38 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

County Marengo County, AL

The radar

The Mobile radar (KMOB), 161 km from the middle of the area, began a volume at 16:51 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, 12:15 PM CDT	TORNADO 1	E Nanafalia, AL	AN EF-1 TORNADO TOUCHED DOWN NEAR NANAFALIA. THIS SMALL DAMAGE PATH CONSISTED OF MAINLY TREE DAMAGE...HOWEVER...THE DAMAGE PATH WAS COMPLETELY OBSCURED BY THE NANAFALIA 2 TORNADO THAT OCCURED AROUND 639 PM. THERE WERE SEVERAL EYEWITNESS ACCOUNTS OF THE TREE AN
Apr 15, 12:35 PM CDT	TORNADO	Nanafalia, AL	TREES DOWN. TORNADO SEEN ON THE GROUND BY LAW ENFORCEMENT.

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, 4.9 hours before the alert went out and 166 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.

112 
WFUS54 KBMX 151652
TORBMX
ALC091-151730-
/O.NEW.KBMX.TO.W.0046.110415T1652Z-110415T1730Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1152 AM CDT FRI APR 15 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

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

* UNTIL 1230 PM CDT

* AT 1147 AM CDT...RADAR INDICATED AND CONFIRMED BY LOCAL LAW 
ENFORCEMENT A TORNADO 7 MILES WEST OF ARARAT...OR 31 MILES SOUTH OF 
CUBA. DOPPLER RADAR SHOWED THIS TORNADO MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  LINDEN...PUTNAM...NANAFALIA...SWEET WATER...MYRTLEWOOD...MILLER...
  WAYNE...SHILOH...CHICKASAW STATE PARK AND HALF ACRE.

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 3208 8809 3209 8805 3214 8805 3217 8801
      3225 8801 3238 8777 3216 8763 3199 8804
      3201 8809 3200 8811 3202 8812 3206 8812
TIME...MOT...LOC 1652Z 240DEG 30KT 3202 8821

$$

08

2 follow-up statements

244 
WWUS54 KBMX 151703
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1203 PM CDT FRI APR 15 2011

ALC091-151730-
/O.CON.KBMX.TO.W.0046.000000T0000Z-110415T1730Z/
MARENGO AL-
1203 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR MARENGO COUNTY UNTIL 1230
PM CDT...

AT 1201 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUES TO 
TRACK A CONFIRMED TORNADO.  THIS TORNADO WAS LOCATED NEAR MT 
STERLING...OR 27 MILES SOUTHWEST OF LINDEN...MOVING NORTHEAST AT 30 
MPH.

LOCATIONS IMPACTED INCLUDE...
  LINDEN...PUTNAM...NANAFALIA...MYRTLEWOOD...SWEET WATER...MILLER...
  WAYNE...SHILOH...CHICKASAW STATE PARK AND HALF ACRE.

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

LAT...LON 3208 8809 3209 8805 3214 8805 3217 8801
      3225 8801 3238 8777 3216 8763 3199 8804
      3201 8809 3200 8811 3202 8812 3206 8812
TIME...MOT...LOC 1703Z 235DEG 27KT 3207 8815

$$

08

132 
WWUS54 KBMX 151713
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1213 PM CDT FRI APR 15 2011

ALC091-151730-
/O.CON.KBMX.TO.W.0046.000000T0000Z-110415T1730Z/
MARENGO AL-
1213 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR MARENGO COUNTY UNTIL 1230
PM CDT...

AT 1210 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A CONFIRMED TORNADO.  THIS TORNADO WAS LOCATED NEAR MT STERLING...OR 
22 MILES SOUTHWEST OF LINDEN...MOVING NORTHEAST AT 35 MPH. LARGE 
HAIL TO THE SIZE OF GOLFBALLS IS POSSIBLE AS WELL WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  LINDEN...NANAFALIA...SWEET WATER...MYRTLEWOOD...MILLER...WAYNE...
  SHILOH...CHICKASAW STATE PARK...HALF ACRE AND CALVARY.

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 3208 8809 3209 8805 3214 8805 3217 8801
      3225 8801 3238 8777 3216 8763 3199 8804
      3201 8809 3200 8811 3202 8812 3206 8812
TIME...MOT...LOC 1712Z 243DEG 29KT 3210 8807

$$

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, 12:15 PM CDT	Severe Thunderstorm Warning	BMX	Lamar, Pickens	34 min
Apr 15, 12:24 PM CDT	Tornado Warning	BMX	Marengo	51 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.