Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 347, NWS Birmingham, AL

June 28, 2011Greene County, Pickens County, Tuscaloosa County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 28, 2011, 1:01 PM CDT for Greene County, Pickens County, Tuscaloosa County, Alabama. It was in force for 19 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: Jun 28, 2011, 1:01 PM CDT (18:01 UTC)
Expired: Jun 28, 2011, 1:20 PM CDT
In force: 19 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Greene County, AL, Pickens County, AL, Tuscaloosa County, AL

The radar

The Columbus AFB radar (KGWX), 107 km from the middle of the area, began a volume at 18:03 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
Jun 28, 1:16 PM CDT	TSTM WND DMG	Union, AL	TREE DOWN ON CR 191

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

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 28, 10:26 AM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 6.0 hours before the alert went out and 119 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: 2747 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 769 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 34 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.

849 
WUUS54 KBMX 281801
SVRBMX
ALC063-107-125-281845-
/O.NEW.KBMX.SV.W.0347.110628T1801Z-110628T1845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
101 PM CDT TUE JUN 28 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

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

* UNTIL 145 PM CDT

* AT 1259 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 5
  MILES NORTH OF PANOLA TO GORDO...AND MOVING SOUTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  EUTAW...BENEVOLA...JENA...NEW WEST GREENE...MANTUA...WEST GREENE...
  UNION AND KNOXVILLE.

THIS INCLUDES...
INTERSTATE 20 EXIT NUMBERS 32 THROUGH 62...

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. MOVE INDOORS
IMMEDIATELY! LIGHTNING IS ONE OF NATURES LEADING KILLERS. REMEMBER...
IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING.

&&

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

LAT...LON 3336 8783 3309 8758 3300 8768 3300 8771
      3295 8775 3269 8807 3276 8811 3280 8806
      3279 8810 3283 8816 3286 8815 3292 8821
      3293 8817 3296 8818 3296 8816 3299 8817
      3299 8825 3312 8833
TIME...MOT...LOC 1801Z 323DEG 24KT 3302 8825 3328 8788

$$

61

1 follow-up statement

660 
WWUS54 KBMX 281820
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
120 PM CDT TUE JUN 28 2011

ALC063-107-125-281829-
/O.CAN.KBMX.SV.W.0347.000000T0000Z-110628T1845Z/
GREENE AL-PICKENS AL-TUSCALOOSA AL-
120 PM CDT TUE JUN 28 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN TUSCALOOSA...
SOUTHERN PICKENS AND GREENE COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 6 PM.

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

LAT...LON 3336 8783 3309 8758 3300 8768 3300 8771
      3295 8775 3269 8807 3276 8811 3280 8806
      3279 8810 3283 8816 3286 8815 3292 8821
      3293 8817 3296 8818 3296 8816 3299 8817
      3299 8825 3312 8833
TIME...MOT...LOC 1819Z 323DEG 24KT 3292 8817 3318 8780

$$

61

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 7:50 AM CDT	Special Weather Statement	BMX	Cherokee, Etowah	40 min
Jun 28, 8:59 AM CDT	Special Weather Statement	BMX	Marion, Winston	61 min
Jun 28, 11:21 AM CDT	Areal Flood Advisory	BMX	Marion	3 hr
Jun 28, 11:41 AM CDT	Flash Flood Warning	BMX	Lamar, Marion	3 hr
Jun 28, 11:54 AM CDT	Special Weather Statement	BMX	Lamar	66 min
Jun 28, 12:04 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar	41 min
Jun 28, 12:07 PM CDT	Flash Flood Warning	BMX	Lamar	2 hr
Jun 28, 12:22 PM CDT	Special Weather Statement	BMX	Elmore	38 min
Jun 28, 12:22 PM CDT	Severe Thunderstorm Warning	BMX	Pickens	53 min
Jun 28, 12:27 PM CDT	Special Weather Statement	BMX	Tuscaloosa	48 min
Jun 28, 12:53 PM CDT	Special Weather Statement	BMX	Greene, Sumter	52 min
Jun 28, 1:05 PM CDT	Special Weather Statement	BMX	Bibb	40 min
Jun 28, 1:18 PM CDT	Special Weather Statement	BMX	Macon	42 min
Jun 28, 2:32 PM CDT	Special Weather Statement	BMX	Bullock	43 min
Jun 28, 2:52 PM CDT	Special Weather Statement	BMX	Marengo	38 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.