Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 172, NWS Birmingham, AL

June 11, 2012Greene County, Hale County, Sumter County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 11, 2012, 8:03 PM CDT for Greene County, Hale County, Sumter County, Alabama. It was in force for 42 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: Jun 11, 2012, 8:03 PM CDT (01:03 UTC)
Expired: Jun 11, 2012, 8:45 PM CDT
In force: 42 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Greene County, AL, Hale County, AL, Sumter County, AL

The radar

The Birmingham radar (KBMX), 127 km from the middle of the area, began a volume at 01:05 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jun 11, 5:17 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 1.1 hours before the alert went out and 127 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: 2695 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 779 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 137 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.

105 
WUUS54 KBMX 120103
SVRBMX
ALC063-065-119-120145-
/O.NEW.KBMX.SV.W.0172.120612T0103Z-120612T0145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
803 PM CDT MON JUN 11 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GREENE COUNTY IN WEST CENTRAL ALABAMA...
  SOUTHERN HALE COUNTY IN WEST CENTRAL ALABAMA...
  SUMTER COUNTY IN WEST CENTRAL ALABAMA...

* UNTIL 845 PM CDT

* AT 801 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A LINE OF
  SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
  AKRON TO ALLISON TO EMELLE...AND MOVING SOUTHEAST AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  EUTAW...LIVINGSTON...YORK...CUBA...EMELLE...ALLISON...EVANSVILLE
  AND BOLIGEE.

THIS INCLUDES...
INTERSTATE 20 EXIT NUMBERS 1 THROUGH 45...

WINDS OF 60 TO 70 MPH WILL BREAK LARGE TREE LIMBS AND CAUSE SOME
DAMAGE...ESPECIALLY TO SMALLER STRUCTURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS HAVE A HISTORY OF PRODUCING WIDESPREAD WIND DAMAGE 
ACROSS PORTIONS OF TUSCALOOSA COUNTY. THIS IS AN EXTREMELY DANGEROUS 
SITUATION. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY 
FROM WINDOWS.

INTENSE SQUALL LINES CAN OCCASIONALLY PRODUCE BRIEF TORNADOES IN
ADDITION TO WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH NOT
IMMEDIATELY LIKELY...FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON
THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. THIS STORM HAS THE
POTENTIAL TO CAUSE SERIOUS INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

&&

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

LAT...LON 3287 8836 3302 8785 3259 8752 3255 8753
      3248 8772 3252 8773 3252 8781 3255 8784
      3252 8784 3252 8792 3247 8796 3243 8803
      3240 8804 3234 8842
TIME...MOT...LOC 0103Z 332DEG 35KT 3291 8769 3280 8801
          3274 8837

$$

27

1 follow-up statement

948 
WWUS54 KBMX 120123
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
823 PM CDT MON JUN 11 2012

ALC063-065-119-120145-
/O.CON.KBMX.SV.W.0172.000000T0000Z-120612T0145Z/
GREENE AL-HALE AL-SUMTER AL-
823 PM CDT MON JUN 11 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
SUMTER...SOUTHWESTERN HALE AND SOUTHERN GREENE COUNTIES UNTIL 845 PM
CDT...

AT 820 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM GREENSBORO TO THORNHILL TO BOYD...MOVING SOUTHEAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  YORK...CUBA...GREENSBORO MUNICIPAL AIRPORT...DUFFYS BEND...DUG
  HILL...ARCOLA...COATOPA...NEWBERN...BIRDINE AND I 20 WELCOME CENTER
  AT CUBA.

THIS INCLUDES...
INTERSTATE 20 EXIT NUMBERS 1 THROUGH 23...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING WIDESPREAD WIND DAMAGE ACROSS 
TUSCALOOSA COUNTY. THIS IS AN EXTREMELY DANGEROUS SITUATION. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

INTENSE SQUALL LINES CAN OCCASIONALLY PRODUCE BRIEF TORNADOES IN
ADDITION TO WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH NOT
IMMEDIATELY LIKELY...FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON
THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. THIS STORM HAS THE
POTENTIAL TO CAUSE SERIOUS INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

&&

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

LAT...LON 3267 8838 3288 8775 3259 8752 3255 8753
      3248 8772 3252 8773 3252 8781 3255 8784
      3252 8784 3252 8792 3247 8796 3243 8803
      3240 8805 3234 8842
TIME...MOT...LOC 0123Z 332DEG 35KT 3274 8758 3263 8790
          3257 8826

$$

27

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 7:17 PM CDT	Severe Thunderstorm Warning	BMX	Shelby, Talladega	43 min
Jun 11, 7:26 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Walker	64 min
Jun 11, 7:30 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale, Pickens, Sumter, Tuscaloosa	45 min
Jun 11, 7:51 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Walker	39 min
Jun 11, 7:56 PM CDT	Special Weather Statement	BMX	Shelby	49 min
Jun 11, 7:59 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Hale, Jefferson, Perry, Shelby and 1 more	46 min
Jun 11, 8:06 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, St. Clair, Shelby	54 min
Jun 11, 8:18 PM CDT	Flash Flood Warning	BMX	Shelby, Talladega	3 hr
Jun 11, 8:45 PM CDT	Special Weather Statement	BMX	Marengo	45 min
Jun 11, 8:53 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Coosa, St. Clair, Shelby, Talladega	52 min
Jun 11, 8:54 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Coosa, Dallas, Perry	51 min
Jun 11, 9:38 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Coosa, Elmore, Lowndes, Montgomery, Tallapoosa	52 min
Jun 11, 10:13 PM CDT	Special Weather Statement	BMX	Bullock, Lee, Macon, Montgomery	47 min
Jun 11, 10:54 PM CDT	Special Weather Statement	BMX	Barbour, Bullock, Lee, Pike, Russell	66 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.