Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 367, NWS Birmingham, AL

July 4, 2011Lamar County, Marion County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jul 4, 2011, 5:39 PM CDT for Lamar County, Marion County, Alabama. It was in force for 51 min. 1 report 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: Jul 4, 2011, 5:39 PM CDT (22:39 UTC)
Expired: Jul 4, 2011, 6:30 PM CDT
In force: 51 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Lamar County, AL, Marion County, AL

The radar

The Columbus AFB radar (KGWX), 26 km from the middle of the area, began a volume at 22:39 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
Jul 4, 5:48 PM CDT	TSTM WND DMG	5 Wnw Sulligent, AL	ONE TREE DOWN ALONG BLAYLOCK RD NEAR THE STATE LINE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 10.7 hours before the alert went out and 144 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: 2435 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 821 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -37 m²/s²
0-3 km storm-relative helicity: -27 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.

492 
WUUS54 KBMX 042239
SVRBMX
ALC075-093-042330-
/O.NEW.KBMX.SV.W.0367.110704T2239Z-110704T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
539 PM CDT MON JUL 4 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN LAMAR COUNTY IN WEST CENTRAL ALABAMA...
  SOUTHWESTERN MARION COUNTY IN NORTHWEST ALABAMA...

* UNTIL 630 PM CDT

* AT 536 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 6
  MILES WEST OF DETROIT...OR 11 MILES NORTHWEST OF SULLIGENT...AND
  MOVING EAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SULLIGENT...DETROIT...BEDFORD...LAMAR COUNTY AIRPORT...CREWS...
  BEAVERTON...BLOOMING GROVE AND BYRD.

THIS INCLUDES...
US 78 EXIT NUMBERS 14 THROUGH 16...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

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

LAT...LON 3416 8820 3407 8791 3393 8793 3392 8795
      3383 8795 3382 8794 3373 8796 3379 8824
      3383 8825
TIME...MOT...LOC 2239Z 292DEG 17KT 3400 8826

$$

2 follow-up statements

218 
WWUS54 KBMX 042300
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
600 PM CDT MON JUL 4 2011

ALC075-093-042330-
/O.CON.KBMX.SV.W.0367.000000T0000Z-110704T2330Z/
LAMAR AL-MARION AL-
600 PM CDT MON JUL 4 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
MARION AND NORTHERN LAMAR COUNTIES UNTIL 630 PM CDT...

AT 600 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED NEAR
SULLIGENT...MOVING EAST AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...
  SULLIGENT...BEDFORD...LAMAR COUNTY AIRPORT...CREWS...BEAVERTON...
  BLOOMING GROVE...PINE SPRINGS...HENSON SPRINGS AND PIKEVILLE.

THIS INCLUDES...
US 78 EXIT NUMBERS 14 THROUGH 16...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

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

LAT...LON 3416 8820 3407 8791 3393 8793 3392 8795
      3383 8795 3382 8794 3373 8796 3379 8824
      3383 8825
TIME...MOT...LOC 2300Z 292DEG 17KT 3394 8820

$$

831 
WWUS54 KBMX 042325
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
625 PM CDT MON JUL 4 2011

ALC075-093-042335-
/O.EXP.KBMX.SV.W.0367.000000T0000Z-110704T2330Z/
LAMAR AL-MARION AL-
625 PM CDT MON JUL 4 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MARION AND
NORTHERN LAMAR COUNTIES WILL EXPIRE AT 630 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.

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

LAT...LON 3416 8820 3407 8791 3393 8793 3392 8795
      3383 8795 3382 8794 3373 8796 3379 8824
      3383 8825
TIME...MOT...LOC 2325Z 292DEG 17KT 3390 8807

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 7:23 PM CDT	Special Weather Statement	BMX	Fayette	52 min
Jul 3, 7:59 PM CDT	Special Weather Statement	BMX	Winston	46 min
Jul 3, 8:07 PM CDT	Special Weather Statement	BMX	Pickens	38 min
Jul 3, 8:16 PM CDT	Special Weather Statement	BMX	Tuscaloosa	44 min
Jul 3, 8:38 PM CDT	Severe Thunderstorm Warning	BMX	Lamar, Pickens	52 min
Jul 3, 8:45 PM CDT	Special Weather Statement	BMX	Walker	45 min
Jul 3, 8:58 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Walker	47 min
Jul 3, 9:32 PM CDT	Special Weather Statement	BMX	Pickens	43 min
Jul 3, 9:46 PM CDT	Special Weather Statement	BMX	Walker	29 min
Jul 3, 10:21 PM CDT	Special Weather Statement	BMX	Blount	39 min
Jul 4, 12:50 PM CDT	Special Weather Statement	BMX	Marengo	40 min
Jul 4, 1:30 PM CDT	Special Weather Statement	BMX	Walker	45 min
Jul 4, 1:36 PM CDT	Special Weather Statement	BMX	Greene	39 min
Jul 4, 1:40 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, St. Clair	35 min
Jul 4, 1:40 PM CDT	Severe Thunderstorm Warning	BMX	Walker	50 min
Jul 4, 1:44 PM CDT	Special Weather Statement	BMX	Jefferson	46 min
Jul 4, 1:59 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale	46 min
Jul 4, 2:04 PM CDT	Areal Flood Advisory	BMX	Jefferson	3 hr
Jul 4, 2:14 PM CDT	Special Weather Statement	BMX	Randolph	46 min
Jul 4, 2:18 PM CDT	Special Weather Statement	BMX	Greene	42 min
Jul 4, 2:26 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Pickens, Sumter	45 min
Jul 4, 2:30 PM CDT	Special Weather Statement	BMX	Jefferson	45 min
Jul 4, 2:32 PM CDT	Special Weather Statement	BMX	Bibb	43 min
Jul 4, 2:34 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Hale, Perry, Tuscaloosa	41 min
Jul 4, 2:39 PM CDT	Special Weather Statement	BMX	Marengo	51 min
Jul 4, 2:52 PM CDT	Special Weather Statement	BMX	Jefferson	38 min
Jul 4, 2:56 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, Shelby, Tuscaloosa	49 min
Jul 4, 2:58 PM CDT	Severe Thunderstorm Warning	BMX	Sumter	47 min
Jul 4, 3:19 PM CDT	Special Weather Statement	BMX	Greene	41 min
Jul 4, 3:29 PM CDT	Areal Flood Advisory	BMX	Sumter	3 hr
Jul 4, 3:30 PM CDT	Special Weather Statement	BMX	Tuscaloosa	45 min
Jul 4, 3:44 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, St. Clair, Shelby, Tuscaloosa	46 min
Jul 4, 3:49 PM CDT	Areal Flood Advisory	BMX	Jefferson, Shelby	3 hr
Jul 4, 4:06 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Tuscaloosa, Walker	39 min
Jul 4, 4:08 PM CDT	Special Weather Statement	BMX	Winston	52 min
Jul 4, 4:13 PM CDT	Special Weather Statement	BMX	Blount	47 min
Jul 4, 4:27 PM CDT	Special Weather Statement	BMX	Shelby	48 min
Jul 4, 4:40 PM CDT	Special Weather Statement	BMX	Clay	50 min
Jul 4, 4:42 PM CDT	Flash Flood Warning	BMX	Sumter	3 hr
Jul 4, 4:47 PM CDT	Special Weather Statement	BMX	Fayette	43 min
Jul 4, 5:07 PM CDT	Special Weather Statement	BMX	Marion	38 min
Jul 4, 5:18 PM CDT	Severe Thunderstorm Warning	BMX	Chilton, Coosa	31 min
Jul 4, 5:37 PM CDT	Special Weather Statement	BMX	Clay	53 min
Jul 4, 5:52 PM CDT	Special Weather Statement	BMX	Coosa	38 min
Jul 4, 5:57 PM CDT	Severe Thunderstorm Warning	BMX	Marion, Walker, Winston	39 min
Jul 4, 6:20 PM CDT	Special Weather Statement	BMX	Fayette	25 min
Jul 4, 6:40 PM CDT	Special Weather Statement	BMX	Fayette, Walker	50 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.