Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 18, NWS Birmingham, AL

February 24, 2012Chambers County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Feb 24, 2012, 7:48 AM CST for Chambers County, Alabama. It was in force for 10 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: Feb 24, 2012, 7:48 AM CST (13:48 UTC)
Expired: Feb 24, 2012, 7:58 AM CST
In force: 10 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

County Chambers County, AL

What was reported inside it

Time	Report	Where	Remark
Feb 24, 7:50 AM CST	TSTM WND DMG	Lanett, AL	SEVERAL PINE TREES WERE SNAPPED AND ONE UTILITY BUILDING WAS OVERTURNED IN THE CITY OF LANETT.

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
Feb 24, 7:48 AM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 1.8 hours before the alert went out and 86 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: 1231 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 542 m above ground
0-6 km bulk shear: 83 kt
0-1 km storm-relative helicity: 163 m²/s²
0-3 km storm-relative helicity: 306 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

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

995 
WUUS54 KBMX 241348
SVRBMX
ALC017-241415-
/O.NEW.KBMX.SV.W.0018.120224T1348Z-120224T1415Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
748 AM CST FRI FEB 24 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL CHAMBERS COUNTY IN EAST CENTRAL ALABAMA...

* UNTIL 815 AM CST

* AT 743 AM CST...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS STORM
  WAS LOCATED NEAR KELLAM HILL...OR NEAR LANETT...AND MOVING EAST AT
  60 MPH.

* LOCATIONS IMPACTED INCLUDE...

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 3284 8528 3296 8533 3300 8521 3297 8520
      3288 8518 3286 8518
TIME...MOT...LOC 1348Z 249DEG 54KT 3292 8519

$$

1 follow-up statement

067 
WWUS54 KBMX 241358
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
758 AM CST FRI FEB 24 2012

ALC017-241408-
/O.CAN.KBMX.SV.W.0018.000000T0000Z-120224T1415Z/
CHAMBERS AL-
758 AM CST FRI FEB 24 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CHAMBERS 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 3284 8528 3296 8533 3300 8521 3297 8520
      3288 8518 3286 8518
TIME...MOT...LOC 1358Z 249DEG 54KT 3297 8502

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 24, 6:36 AM CST	Areal Flood Advisory	BMX	Autauga, Elmore, Tallapoosa	3 hr
Feb 24, 9:03 AM CST	Severe Thunderstorm Warning	BMX	Dallas, Lowndes	42 min
Feb 24, 9:08 AM CST	Areal Flood Advisory	BMX	Autauga, Elmore, Lowndes, Montgomery, Tallapoosa	3 hr
Feb 24, 9:32 AM CST	Severe Thunderstorm Warning	BMX	Bullock, Lowndes, Macon, Montgomery	28 min
Feb 24, 9:45 AM CST	Severe Thunderstorm Warning	BMX	Dallas	45 min
Feb 24, 9:50 AM CST	Special Weather Statement	BMX	Chambers, Tallapoosa	55 min
Feb 24, 9:53 AM CST	Severe Thunderstorm Warning	BMX	Bullock, Macon, Montgomery	37 min
Feb 24, 10:14 AM CST	Severe Thunderstorm Warning	BMX	Autauga, Dallas	31 min
Feb 24, 10:18 AM CST	Special Weather Statement	BMX	Macon	42 min
Feb 24, 10:34 AM CST	Tornado Warning	BMX	Pike	31 min
Feb 24, 10:39 AM CST	Special Weather Statement	BMX	Elmore	36 min
Feb 24, 10:59 AM CST	Special Weather Statement	BMX	Tallapoosa	31 min
Feb 24, 11:01 AM CST	Tornado Warning	BMX	Barbour, Bullock	20 min
Feb 24, 11:17 AM CST	Special Weather Statement	BMX	Randolph	28 min
Feb 24, 11:23 AM CST	Special Weather Statement	BMX	Barbour	52 min
Feb 24, 2:44 PM CST	Fire Weather Watch	BMX	Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more	14 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.