Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 166, NWS Birmingham, AL

April 16, 20114 counties in Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Apr 16, 2011, 1:26 AM CDT for 4 counties in Alabama. It was in force for 49 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 16, 2011, 1:26 AM CDT (06:26 UTC)
Expired
Apr 16, 2011, 2:15 AM CDT
In force
49 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon

Counties Bullock County, AL, Lee County, AL, Macon County, AL, Russell County, AL

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 15, 7:48 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 6.4 hours before the alert went out and 112 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 00:00Z on 2011-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 406 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 00:00Z on 2011-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 373 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
406 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
1138 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
373 m²/s²
0-3 km storm-relative helicity
566 m²/s²
Significant tornado parameter
1.3
Supercell composite
11.3

Open this sounding in Storm Lab

The text

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

149 
WUUS54 KBMX 160626
SVRBMX
ALC011-081-087-113-160715-
/O.NEW.KBMX.SV.W.0166.110416T0626Z-110416T0715Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
126 AM CDT SAT APR 16 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN BULLOCK COUNTY IN SOUTHEAST ALABAMA...
  EASTERN LEE COUNTY IN EAST CENTRAL ALABAMA...
  SOUTHEASTERN MACON COUNTY IN SOUTHEAST ALABAMA...
  NORTHERN RUSSELL COUNTY IN SOUTHEAST ALABAMA...

* UNTIL 215 AM CDT

* AT 121 AM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 80
  MPH.  THIS STORM WAS LOCATED NEAR DAVISVILLE...OR 10 MILES
  NORTHEAST OF UNION SPRINGS...AND MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  HURTSBORO...SMITHS...PHENIX CITY...GUERRYTON...SOCIETY HILL...
  UCHEE...BEAUREGARD AND RUSSELL COUNTY SPORTS COMPLEX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A SUPERCELL THUNDERSTORM. DUE TO THE ROTATING NATURE OF THESE
STORMS...THEY ARE CAPABLE OF PRODUCING ALL TYPES OF SEVERE WEATHER...
INCLUDING EXTREMELY LARGE HAIL...DESTRUCTIVE STRAIGHT LINE WINDS AND
POSSIBLY TORNADOES. MOVE QUICKLY TO A SAFE SHELTER...PREFERABLY INTO
AN INTERIOR ROOM...SUCH AS A BATHROOM OR A CLOSET...OR INTO A
BASEMENT.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT SATURDAY MORNING
FOR SOUTHEASTERN ALABAMA.

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

LAT...LON 3238 8497 3215 8566 3227 8580 3273 8511
      3273 8510 3269 8510 3267 8508 3265 8509
      3260 8506 3254 8500 3249 8498 3245 8498
      3243 8496
TIME...MOT...LOC 0625Z 234DEG 37KT 3229 8560

$$
2 follow-up statements
237 
WWUS54 KBMX 160642
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
142 AM CDT SAT APR 16 2011

ALC011-081-087-113-160715-
/O.CON.KBMX.SV.W.0166.000000T0000Z-110416T0715Z/
BULLOCK AL-RUSSELL AL-MACON AL-LEE AL-
142 AM CDT SAT APR 16 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN LEE...
SOUTHEASTERN MACON...NORTHERN RUSSELL AND NORTHEASTERN BULLOCK
COUNTIES UNTIL 215 AM CDT...

AT 139 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED TWO 
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN 
EXCESS OF 80 MPH.  THESE STORMS WERE LOCATED NEAR EAST CENTRAL LEE 
COUNTY AND IN SOUTHEASTERN MACON COUNTY. THE STORMS ARE MOVING 
NORTHEAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  SMITHS...PHENIX CITY...SOCIETY HILL...UCHEE...BEAUREGARD...RUSSELL
  COUNTY SPORTS COMPLEX...GRIFFEN MILL...LADONIA...BLEECKER AND
  SMITHS STATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE ARE SUPERCELL THUNDERSTORMS. DUE TO THE ROTATING NATURE OF 
SUPERCELLS...THEY ARE CAPABLE OF PRODUCING ALL TYPES OF SEVERE 
WEATHER...INCLUDING EXTREMELY LARGE HAIL...DESTRUCTIVE STRAIGHT LINE 
WINDS AND POSSIBLY TORNADOES. BE PREPARED TO ACT QUICKLY SHOULD A 
TORNADO OCCUR OR A TORNADO WARNING BE ISSUED.

&&

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

LAT...LON 3238 8497 3215 8566 3227 8580 3273 8511
      3273 8510 3269 8510 3267 8508 3265 8509
      3260 8506 3254 8500 3249 8498 3245 8498
      3243 8496
TIME...MOT...LOC 0641Z 234DEG 37KT 3238 8544

$$
805 
WWUS54 KBMX 160658
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
158 AM CDT SAT APR 16 2011

ALC011-087-160707-
/O.CAN.KBMX.SV.W.0166.000000T0000Z-110416T0715Z/
BULLOCK AL-MACON AL-
158 AM CDT SAT APR 16 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MACON AND
NORTHEASTERN BULLOCK COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF BULLOCI AND 
MACON COUNTIES.

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

LAT...LON 3238 8497 3233 8539 3248 8543 3273 8511
      3273 8510 3269 8510 3267 8508 3265 8509
      3260 8506 3254 8500 3249 8498 3245 8498
      3243 8496
TIME...MOT...LOC 0657Z 234DEG 37KT 3247 8528

$$

ALC081-113-160715-
/O.CON.KBMX.SV.W.0166.000000T0000Z-110416T0715Z/
RUSSELL AL-LEE AL-
158 AM CDT SAT APR 16 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN LEE
AND NORTHERN RUSSELL COUNTIES UNTIL 215 AM CDT...

AT 153 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS
OF 80 MPH.  THIS STORM WAS LOCATED 6 MILES SOUTHWEST OF GRIFFEN
MILL...OR 14 MILES SOUTHEAST OF AUBURN...MOVING NORTHEAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  SMITHS...PHENIX CITY...GRIFFEN MILL...LADONIA...BLEECKER...SMITHS
  STATION...BIBB CITY...PARKMANVILLE...CRAWFORD AND PHENIX DRAG
  STRIP.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A SUPERCELL THUNDERSTORM. DUE TO THE ROTATING NATURE OF
SUPERCELLS...THEY ARE CAPABLE OF PRODUCING ALL TYPES OF SEVERE
WEATHER...INCLUDING EXTREMELY LARGE HAIL...DESTRUCTIVE STRAIGHT LINE
WINDS AND POSSIBLY TORNADOES. BE PREPARED TO ACT QUICKLY SHOULD A
TORNADO OCCUR OR A TORNADO WARNING BE ISSUED.

&&

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

LAT...LON 3238 8497 3233 8539 3248 8543 3273 8511
      3273 8510 3269 8510 3267 8508 3265 8509
      3260 8506 3254 8500 3249 8498 3245 8498
      3243 8496
TIME...MOT...LOC 0657Z 234DEG 37KT 3247 8528

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 7:03 PM CDTTornado WarningBMXAutauga, Chilton, Dallas, Perry57 min
Apr 15, 7:06 PM CDTTornado WarningBMXLowndes, Montgomery39 min
Apr 15, 7:09 PM CDTTornado WarningBMXDallas, Marengo, Perry66 min
Apr 15, 7:33 PM CDTAreal Flood AdvisoryBMXMarengo3 hr
Apr 15, 7:41 PM CDTTornado WarningBMXChilton, Coosa28 min
Apr 15, 8:10 PM CDTTornado WarningBMXAutauga, Chilton, Dallas, Perry50 min
Apr 15, 8:52 PM CDTTornado WarningBMXAutauga, Elmore38 min
Apr 15, 9:15 PM CDTTornado WarningBMXAutauga, Chilton, Coosa, Elmore30 min
Apr 15, 9:19 PM CDTTornado WarningBMXAutauga, Dallas, Lowndes41 min
Apr 15, 9:37 PM CDTTornado WarningBMXCoosa, Elmore, Tallapoosa38 min
Apr 15, 10:32 PM CDTSevere Thunderstorm WarningBMXAutauga, Chilton, Coosa, Dallas, Elmore, Lowndes and 2 more28 min
Apr 15, 10:43 PM CDTSevere Thunderstorm WarningBMXCalhoun, Clay, Cleburne, Coosa, Randolph, Talladega and 1 more32 min
Apr 15, 10:44 PM CDTTornado WarningBMXAutauga, Coosa, Elmore46 min
Apr 15, 11:20 PM CDTSevere Thunderstorm WarningBMXLowndes, Montgomery, Pike40 min
Apr 15, 11:21 PM CDTTornado WarningBMXChambers, Coosa, Elmore, Tallapoosa54 min
Apr 15, 11:28 PM CDTSevere Thunderstorm WarningBMXChambers, Clay, Cleburne, Randolph, Tallapoosa47 min
Apr 15, 11:52 PM CDTSevere Thunderstorm WarningBMXBullock, Macon, Montgomery, Pike38 min
Apr 15, 11:53 PM CDTTornado WarningBMXChambers, Randolph, Tallapoosa52 min
Apr 16, 12:14 AM CDTSevere Thunderstorm WarningBMXBullock, Montgomery, Pike46 min
Apr 16, 12:36 AM CDTFlash Flood WarningBMXChambers, Randolph, Tallapoosa3 hr
Apr 16, 12:41 AM CDTSevere Thunderstorm WarningBMXBullock, Lee, Macon, Russell34 min
Apr 16, 12:55 AM CDTSevere Thunderstorm WarningBMXBullock, Macon, Montgomery, Pike50 min
Apr 16, 2:11 AM CDTSevere Thunderstorm WarningBMXLee, Russell19 min
Apr 16, 2:58 AM CDTSpecial Weather StatementBMXRussell47 min
Apr 16, 4:13 AM CDTWind AdvisoryBMXAutauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more15 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 2011Every severe thunderstorm warning 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.