Alert archive / Alabama / Freeze Warnings in 2012

Freeze Warning 2, NWS Birmingham, AL

November 8, 201217 counties in Alabama

NWS Birmingham, AL issued this freeze warning at Nov 8, 2012, 7:38 PM CST for 17 counties in Alabama. It took effect at Nov 9, 2012, 12:00 AM CST. It was in force for 7 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Nov 8, 2012, 7:38 PM CST (01:38 UTC)
In effect from
Nov 9, 2012, 12:00 AM CST
Expired
Nov 9, 2012, 7:00 AM CST
In force
7 hr
Issued by
NWS Birmingham, AL

Counties Blount County, AL, Calhoun County, AL, Chambers County, AL, Cherokee County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, Etowah County, AL, Fayette County, AL, Lamar County, AL, Marion County, AL, Randolph County, AL, St. Clair County, AL, Talladega County, AL, Tallapoosa County, AL, Walker County, AL, Winston County, AL

The radar

The Birmingham radar (KBMX), 60 km from the middle of the area, began a volume at 01:40 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, 1.6 hours before the alert went out and 59 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 2012-11-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2012-11-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1603 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
61 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.

915 
WWUS74 KBMX 090138
NPWBMX

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BIRMINGHAM AL
738 PM CST THU NOV 8 2012

...FREEZING TEMPERATURES ARE POSSIBLE ACROSS THE NORTHERN PORTION
OF CENTRAL ALABAMA WITH LIGHT FROST ELSEWHERE OVERNIGHT...

ALZ017>021-026>029-036>038-091300-
/O.UPG.KBMX.FR.Y.0003.121109T0600Z-121109T1300Z/
/O.NEW.KBMX.FZ.W.0002.121109T0600Z-121109T1300Z/
BLOUNT-ETOWAH-CALHOUN-CHEROKEE-CLEBURNE-ST. CLAIR-TALLADEGA-CLAY-
RANDOLPH-COOSA-TALLAPOOSA-CHAMBERS-
INCLUDING THE CITIES OF...ONEONTA...GADSDEN...ANNISTON...CENTRE...
HEFLIN...PELL CITY...MOODY...TALLADEGA...SYLACAUGA...ASHLAND...
ROANOKE...ROCKFORD...ALEXANDER CITY...DADEVILLE...VALLEY...
LANETT...LAFAYETTE
738 PM CST THU NOV 8 2012

...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 7 AM CST
FRIDAY...

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A FREEZE
WARNING...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 7 AM CST
FRIDAY. THE FROST ADVISORY IS NO LONGER IN EFFECT. 

* TEMPERATURES...WILL LIKELY DROP TO OR JUST BELOW 32 DEGREES
  ACROSS A GOOD PORTION OF NORTHEASTERN CENTRAL ALABAMA.

* IMPACTS...OF FREEZING TEMPERATURES MAY DAMAGE OR KILL SENSITIVE
  PLANTS...SHRUBS...AND TREES. OUTDOOR ANIMALS MAY ALSO NEED EXTRA
  PRECAUTION. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION.

&&

$$

ALZ011>015-091300-
/O.UPG.KBMX.FR.Y.0003.121109T0600Z-121109T1300Z/
/O.NEW.KBMX.FZ.W.0002.121109T0600Z-121109T1300Z/
MARION-LAMAR-FAYETTE-WINSTON-WALKER-
INCLUDING THE CITIES OF...HAMILTON...SULLIGENT...VERNON...
FAYETTE...DOUBLE SPRINGS...JASPER
738 PM CST THU NOV 8 2012

...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 7 AM CST
FRIDAY...

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A FREEZE
WARNING...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 7 AM CST
FRIDAY. THE FROST ADVISORY IS NO LONGER IN EFFECT. 

* TEMPERATURES...MAY DROP TO 32 DEGREES ACROSS NORTHWESTERN
  CENTRAL ALABAMA...ESPECIALLY IN COOLER AND SHELTERED LOCATIONS.

* IMPACTS...OF FREEZING TEMPERATURES MAY DAMAGE OR KILL SENSITIVE
  PLANTS...SHRUBS...AND TREES. OUTDOOR ANIMALS MAY ALSO NEED EXTRA
  PRECAUTION. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION.

&&

$$

ALZ022>025-030>035-039>050-091300-
/O.CON.KBMX.FR.Y.0003.121109T0600Z-121109T1300Z/
PICKENS-TUSCALOOSA-JEFFERSON-SHELBY-SUMTER-GREENE-HALE-PERRY-BIBB-
CHILTON-MARENGO-DALLAS-AUTAUGA-LOWNDES-ELMORE-MONTGOMERY-MACON-
BULLOCK-LEE-RUSSELL-PIKE-BARBOUR-
INCLUDING THE CITIES OF...CARROLLTON...TUSCALOOSA...BIRMINGHAM...
HOOVER...COLUMBIANA...PELHAM...ALABASTER...LIVINGSTON...EUTAW...
GREENSBORO...MOUNDVILLE...MARION...CENTREVILLE...CLANTON...
DEMOPOLIS...LINDEN...SELMA...PRATTVILLE...FORT DEPOSIT...
HAYNEVILLE...WETUMPKA...TALLASSEE...MONTGOMERY...TUSKEGEE...
UNION SPRINGS...AUBURN...OPELIKA...PHENIX CITY...TROY...EUFAULA
738 PM CST THU NOV 8 2012

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 7 AM
CST FRIDAY...

* TEMPERATURES...WILL DROP OFF INTO THE 32 TO 38 DEGREE RANGE.

* IMPACTS...PREMATURELY BUDDING PLANTS...SHRUBS...AND TREES MAY 
  BE SUSCEPTIBLE TO THE LIGHT FROST. TENDER PLANTS MAY SEE 
  DAMAGE OR BE KILLED IF LEFT OUTSIDE OR PROTECTIVE MEASURES ARE 
  NOT TAKEN. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

Nearby

Freeze Warnings in Alabama, 2012Every freeze 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.