Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 261, NWS Birmingham, AL

June 8, 20114 counties in Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 8, 2011, 5:50 PM CDT for 4 counties in Alabama. It was in force for 25 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 8, 2011, 5:50 PM CDT (22:50 UTC)
Expired: Jun 8, 2011, 6:15 PM CDT
In force: 25 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Fayette County, AL, Jefferson County, AL, Tuscaloosa County, AL, Walker County, AL

The radar

The Birmingham radar (KBMX), 81 km from the middle of the area, began a volume at 22:52 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 12:00Z, 10.8 hours before the alert went out and 80 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: 1072 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1033 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: 24 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.

183 
WUUS54 KBMX 082250
SVRBMX
ALC057-073-125-127-082315-
/O.NEW.KBMX.SV.W.0261.110608T2250Z-110608T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
550 PM CDT WED JUN 8 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL FAYETTE COUNTY IN WEST CENTRAL ALABAMA...
  EXTREME WEST CENTRAL JEFFERSON COUNTY IN ALABAMA...
  NORTH CENTRAL TUSCALOOSA COUNTY IN WEST CENTRAL ALABAMA...
  SOUTH CENTRAL WALKER COUNTY IN ALABAMA...

* UNTIL 615 PM CDT

* AT 548 PM 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 BANKHEAD
  LOCK AND DAM...OR 14 MILES NORTHEAST OF HOLT...AND MOVING NORTHWEST
  AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GORGAS...BOLEY SPRINGS...GOODSPRINGS...WINDHAM SPRINGS...WILEY...
  WHITSON...NORTHSIDE AND THE WYE.

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 3353 8766 3358 8767 3358 8764 3369 8752
      3368 8720 3344 8723 3330 8736 3349 8768
      3351 8768
TIME...MOT...LOC 2250Z 129DEG 11KT 3343 8738

$$

GOGGINS

1 follow-up statement

537 
WWUS54 KBMX 082309
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
609 PM CDT WED JUN 8 2011

ALC057-073-125-127-082315-
/O.CON.KBMX.SV.W.0261.000000T0000Z-110608T2315Z/
FAYETTE AL-JEFFERSON AL-TUSCALOOSA AL-WALKER AL-
609 PM CDT WED JUN 8 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL
WALKER...NORTH CENTRAL TUSCALOOSA...EXTREME WEST CENTRAL JEFFERSON
AND SOUTHEASTERN FAYETTE COUNTIES UNTIL 615 PM CDT...

AT 606 PM 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
BANKHEAD LOCK AND DAM...OR 15 MILES NORTH OF HOLT...MOVING NORTHWEST
AT 15 MPH.

LOCATIONS IMPACTED INCLUDE...
  GOODSPRINGS...WINDHAM SPRINGS...WILEY...WHITSON AND THE WYE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

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

LAT...LON 3352 8763 3355 8760 3359 8757 3368 8741
      3368 8720 3345 8726 3333 8740 3348 8763
      3349 8763
TIME...MOT...LOC 2309Z 129DEG 11KT 3347 8743

$$

56

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 2:57 PM CDT	Special Weather Statement	BMX	Dallas	48 min
Jun 8, 4:04 PM CDT	Special Weather Statement	BMX	Autauga	41 min
Jun 8, 4:45 PM CDT	Severe Thunderstorm Warning	BMX	Marengo	30 min
Jun 8, 4:48 PM CDT	Special Weather Statement	BMX	Chilton	27 min
Jun 8, 5:11 PM CDT	Special Weather Statement	BMX	Marengo	49 min
Jun 8, 5:17 PM CDT	Special Weather Statement	BMX	Bibb	28 min
Jun 8, 5:36 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Perry, Tuscaloosa	26 min
Jun 8, 5:41 PM CDT	Special Weather Statement	BMX	Shelby	49 min
Jun 8, 5:45 PM CDT	Severe Thunderstorm Warning	BMX	Sumter	45 min
Jun 8, 6:00 PM CDT	Severe Thunderstorm Warning	BMX	Pickens	45 min
Jun 8, 6:16 PM CDT	Special Weather Statement	BMX	Walker	44 min
Jun 8, 6:28 PM CDT	Special Weather Statement	BMX	Tuscaloosa	47 min
Jun 8, 6:41 PM CDT	Special Weather Statement	BMX	Fayette	49 min
Jun 8, 6:44 PM CDT	Special Weather Statement	BMX	Pickens	31 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2011 Every 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; radar from the NEXRAD Level II archive.