Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 142, NWS Birmingham, AL

May 22, 2012Greene County, Tuscaloosa County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at May 22, 2012, 1:07 AM CDT for Greene County, Tuscaloosa County, Alabama. It was in force for 26 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: May 22, 2012, 1:07 AM CDT (06:07 UTC)
Expired: May 22, 2012, 1:33 AM CDT
In force: 26 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Greene County, AL, Tuscaloosa County, AL

The radar

The Birmingham radar (KBMX), 99 km from the middle of the area, began a volume at 06:07 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 nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 6.1 hours before the alert went out and 98 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: 174 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 1734 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -8 m²/s²
0-3 km storm-relative helicity: 12 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

653 
WUUS54 KBMX 220607
SVRBMX
ALC063-125-220645-
/O.NEW.KBMX.SV.W.0142.120522T0607Z-120522T0645Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
107 AM CDT TUE MAY 22 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN GREENE COUNTY IN WEST CENTRAL ALABAMA...
  SOUTHWESTERN TUSCALOOSA COUNTY IN WEST CENTRAL ALABAMA...

* UNTIL 145 AM CDT

* AT 102 AM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
  WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR JENA...OR
  16 MILES SOUTH OF GORDO...AND MOVING SOUTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  KNOXVILLE AND RALPH.

THIS INCLUDES...
INTERSTATE 20 EXIT NUMBER 52...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3314 8786 3315 8785 3309 8768 3297 8780
      3307 8791
TIME...MOT...LOC 0607Z 307DEG 16KT 3308 8785

$$

2 follow-up statements

383 
WWUS54 KBMX 220626
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
126 AM CDT TUE MAY 22 2012

ALC063-220636-
/O.CAN.KBMX.SV.W.0142.000000T0000Z-120522T0645Z/
GREENE AL-
126 AM CDT TUE MAY 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GREENE COUNTY 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 3311 8777 3309 8773 3308 8770 3302 8775
      3301 8776 3302 8782 3304 8783
TIME...MOT...LOC 0626Z 307DEG 16KT 3303 8777

$$

ALC125-220645-
/O.CON.KBMX.SV.W.0142.000000T0000Z-120522T0645Z/
TUSCALOOSA AL-
126 AM CDT TUE MAY 22 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
TUSCALOOSA COUNTY UNTIL 145 AM CDT...

AT 122 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
KNOXVILLE...OR 15 MILES NORTHEAST OF EUTAW...MOVING SOUTHEAST AT 20
MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME SOUTHWESTERN TUSCALOOSA COUNTY.

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

LAT...LON 3311 8777 3309 8773 3308 8770 3302 8775
      3301 8776 3302 8782 3304 8783
TIME...MOT...LOC 0626Z 307DEG 16KT 3303 8777

$$

163 
WWUS54 KBMX 220633
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
133 AM CDT TUE MAY 22 2012

ALC125-220643-
/O.CAN.KBMX.SV.W.0142.000000T0000Z-120522T0645Z/
TUSCALOOSA AL-
133 AM CDT TUE MAY 22 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN TUSCALOOSA COUNTY
IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS 
THUNDERSTORM.

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

LAT...LON 3311 8777 3309 8773 3308 8770 3302 8775
      3301 8776 3302 8782 3304 8783
TIME...MOT...LOC 0633Z 307DEG 16KT 3301 8774

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 8:55 PM CDT	Special Weather Statement	BMX	Marion	50 min
May 21, 9:42 PM CDT	Special Weather Statement	BMX	Marion	48 min
May 21, 10:26 PM CDT	Special Weather Statement	BMX	Lamar, Marion	49 min
May 21, 10:45 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar	30 min
May 21, 11:11 PM CDT	Special Weather Statement	BMX	Fayette, Lamar, Pickens	49 min
May 21, 11:15 PM CDT	Special Weather Statement	BMX	Walker	45 min
May 21, 11:17 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Tuscaloosa	28 min
May 21, 11:39 PM CDT	Severe Thunderstorm Warning	BMX	Tuscaloosa	36 min
May 21, 11:52 PM CDT	Special Weather Statement	BMX	Pickens, Tuscaloosa	38 min
May 22, 12:10 AM CDT	Special Weather Statement	BMX	Walker	50 min
May 22, 12:14 AM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Tuscaloosa, Walker	46 min
May 22, 12:24 AM CDT	Special Weather Statement	BMX	Pickens	66 min
May 22, 12:40 AM CDT	Severe Thunderstorm Warning	BMX	Jefferson	40 min
May 22, 12:52 AM CDT	Special Weather Statement	BMX	Tuscaloosa	38 min
May 22, 1:13 AM CDT	Special Weather Statement	BMX	Shelby	47 min
May 22, 1:32 AM CDT	Special Weather Statement	BMX	Hale	43 min
May 22, 1:45 AM CDT	Special Weather Statement	BMX	Chilton	45 min
May 22, 1:59 AM CDT	Special Weather Statement	BMX	Perry	31 min
May 22, 2:39 AM CDT	Special Weather Statement	BMX	Dallas	51 min
May 22, 5:41 AM CDT	Special Weather Statement	BMX	Barbour	49 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012 Every severe thunderstorm warning in 2012

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.