Alert archive / Alabama / Tornado Warnings in 2012

Tornado Warning 38, NWS Birmingham, AL

October 14, 2012Lamar County, Alabama

NWS Birmingham, AL issued this tornado warning at Oct 14, 2012, 7:59 PM CDT for Lamar County, Alabama. It was in force for 18 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
Oct 14, 2012, 7:59 PM CDT (00:59 UTC)
Expired
Oct 14, 2012, 8:17 PM CDT
In force
18 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon

County Lamar County, AL

The radar

The Columbus AFB radar (KGWX), 25 km from the middle of the area, began a volume at 01:00 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 00:00Z, 1.0 hours before the alert went out and 149 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-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2012-10-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 425 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2012-10-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 203 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
425 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
930 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
203 m²/s²
0-3 km storm-relative helicity
235 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.6

Open this sounding in Storm Lab

The text

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

689 
WFUS54 KBMX 150059
TORBMX
ALC075-150130-
/O.NEW.KBMX.TO.W.0038.121015T0059Z-121015T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
759 PM CDT SUN OCT 14 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN LAMAR COUNTY IN WEST CENTRAL ALABAMA...

* UNTIL 830 PM CDT

* AT 755 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM
  WAS LOCATED 8 MILES NORTHWEST OF BEDFORD...OR 8 MILES WEST OF
  SULLIGENT...AND MOVING EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SULLIGENT...CREWS...BEAVERTON...PINE SPRINGS AND HENSON SPRINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A STURDY BUILDING.

&&

TO REPORT SEVERE WEATHER...
CALL 1-800-856-0758 OR TWEET YOUR REPORT USING HASHTAG ALWX

LAT...LON 3398 8822 3406 8803 3405 8799 3402 8799
      3402 8795 3389 8795 3385 8824
TIME...MOT...LOC 0059Z 257DEG 25KT 3391 8825

$$

56
1 follow-up statement
390 
WWUS54 KBMX 150117
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
817 PM CDT SUN OCT 14 2012

ALC075-150126-
/O.CAN.KBMX.TO.W.0038.000000T0000Z-121015T0130Z/
LAMAR AL-
817 PM CDT SUN OCT 14 2012

...THE TORNADO WARNING FOR NORTHERN LAMAR COUNTY IS CANCELLED...

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

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

LAT...LON 3398 8822 3406 8803 3405 8799 3402 8799
      3402 8795 3389 8795 3385 8824
TIME...MOT...LOC 0116Z 257DEG 25KT 3393 8811

$$

56

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 14, 8:16 PM CDTSpecial Weather StatementBMXLamar44 min
Oct 14, 9:39 PM CDTSpecial Weather StatementBMXWalker36 min
Oct 14, 10:29 PM CDTSpecial Weather StatementBMXJefferson31 min
Oct 14, 10:54 PM CDTSpecial Weather StatementBMXJefferson36 min
Oct 14, 11:39 PM CDTSpecial Weather StatementBMXTuscaloosa36 min
Oct 15, 4:10 AM CDTAreal Flood AdvisoryBMXAutauga, Elmore, Montgomery2 hr

Nearby

Tornado Warnings in Alabama, 2012Every tornado warning in 2012Tornadoes 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.