Alert archive / Alabama / Freeze Warnings in 2012

Freeze Warning 2, NWS Mobile, AL

November 24, 201210 counties in Alabama; 5 counties in Mississippi

NWS Mobile, AL issued this freeze warning at Nov 24, 2012, 3:38 AM CST for 10 counties in Alabama; 5 counties in Mississippi. It took effect at Nov 24, 2012, 11:00 PM CST. It was in force for 8 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 24, 2012, 3:38 AM CST (09:38 UTC)
In effect from
Nov 24, 2012, 11:00 PM CST
Expired
Nov 25, 2012, 7:00 AM CST
In force
8 hr
Issued by
NWS Mobile, AL

Counties Butler County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Escambia County, AL, Monroe County, AL, Washington County, AL, Wilcox County, AL, George County, MS, Greene County, MS, Perry County, MS, Stone County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 96 km from the middle of the area, began a volume at 09:35 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, 9.6 hours before the alert went out and 215 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 2012-11-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 16 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 2012-11-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 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
16 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
724 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
71 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.

751 
WWUS74 KMOB 240938
NPWMOB

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOBILE AL
338 AM CST SAT NOV 24 2012

...FIRST WIDESPREAD FREEZE TO IMPACT THE REGION LATE TONIGHT 
THROUGH EARLY SUNDAY MORNING...

.COLD HIGH PRESSURE WILL MOVE DIRECTLY OVER THE REGION TONIGHT. THE
COMBINATION OF CLEAR SKIES...LIGHT WINDS... AND A DRY AIRMASS WILL
RESULT IN TEMPERATURES DROPPING TO OR BELOW FREEZING OVER THE
MAJORITY OF THE REGION...WITH THE EXCEPTION BEING LOCATIONS ALONG THE
IMMEDIATE COAST.

ALZ051>064-FLZ001>006-MSZ067-075-076-078-079-242200-
/O.UPG.KMOB.FZ.A.0002.121125T0600Z-121125T1300Z/
/O.NEW.KMOB.FZ.W.0002.121125T0500Z-121125T1300Z/
CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW-
ESCAMBIA-COVINGTON-UPPER MOBILE-UPPER BALDWIN-LOWER MOBILE-
LOWER BALDWIN-INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-WAYNE-PERRY-
GREENE-STONE-GEORGE-
INCLUDING THE CITIES OF...BUTLER...LISMAN...SILAS...CHATOM...
MILLRY...JACKSON...THOMASVILLE...GROVE HILL...CAMDEN...
PINE HILL...HOMEWOOD...MONROEVILLE...EVERGREEN...GREENVILLE...
LUVERNE...BRANTLEY...ATMORE...BREWTON...EAST BREWTON...
ANDALUSIA...OPP...MOBILE...PRICHARD...SARALAND...BAY MINETTE...
TILLMANS CORNER...THEODORE...DAPHNE...FAIRHOPE...FOLEY...
SPANISH FORT...CENTURY...FLOMATON...MOLINO...FERRY PASS...BRENT...
WEST PENSACOLA...BELLVIEW...ENSLEY...MYRTLE GROVE...JAY...PACE...
MILTON...CRESTVIEW...WRIGHT...NICEVILLE...SEMINOLE...EGLIN AFB...
WAYNESBORO...RICHTON...BEAUMONT...NEW AUGUSTA...LEAKESVILLE...
MCLAIN...WIGGINS...LUCEDALE
338 AM CST SAT NOV 24 2012

...FREEZE WARNING IN EFFECT FROM 11 PM THIS EVENING TO 7 AM CST
SUNDAY...

THE NATIONAL WEATHER SERVICE IN MOBILE HAS ISSUED A FREEZE
WARNING...WHICH IS IN EFFECT FROM 11 PM THIS EVENING TO 7 AM CST
SUNDAY.  

* TEMPERATURE...LOWS OF 25 TO 30 DEGREES ACROSS MUCH OF THE REGION...
  EXCEPT 33 TO 37 DEGREES IMMEDIATELY NEAR THE COAST.

* IMPACTS...FREEZING TEMPERATURES MAY DAMAGE OR KILL SENSITIVE 
  PLANTS OR SHRUBS. ANIMALS WILL ALSO NEED EXTRA PROTECTION FROM 
  THE COLD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE
VEGETATION. ANIMALS WILL ALSO NEED EXTRA PROTECTION FROM THE COLD.

&&

$$
2 follow-up statements
025 
WWUS74 KMOB 241953
NPWMOB

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOBILE AL
153 PM CST SAT NOV 24 2012

...FIRST WIDESPREAD FREEZE TO IMPACT THE REGION LATE TONIGHT
THROUGH EARLY SUNDAY MORNING...

.COLD HIGH PRESSURE WILL MOVE DIRECTLY OVER THE REGION TONIGHT. THE
COMBINATION OF CLEAR SKIES...LIGHT WINDS...AND A DRY AIRMASS WILL
RESULT IN TEMPERATURES DROPPING TO OR BELOW FREEZING OVER THE
MAJORITY OF THE REGION...WITH THE EXCEPTION BEING LOCATIONS ALONG THE
IMMEDIATE COAST.

ALZ051>064-FLZ001>006-MSZ067-075-076-078-079-250400-
/O.CON.KMOB.FZ.W.0002.121125T0500Z-121125T1300Z/
CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW-
ESCAMBIA-COVINGTON-UPPER MOBILE-UPPER BALDWIN-LOWER MOBILE-
LOWER BALDWIN-INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-WAYNE-PERRY-
GREENE-STONE-GEORGE-
INCLUDING THE CITIES OF...BUTLER...LISMAN...SILAS...CHATOM...
MILLRY...JACKSON...THOMASVILLE...GROVE HILL...CAMDEN...
PINE HILL...HOMEWOOD...MONROEVILLE...EVERGREEN...GREENVILLE...
LUVERNE...BRANTLEY...ATMORE...BREWTON...EAST BREWTON...
ANDALUSIA...OPP...MOBILE...PRICHARD...SARALAND...BAY MINETTE...
TILLMANS CORNER...THEODORE...DAPHNE...FAIRHOPE...FOLEY...
SPANISH FORT...CENTURY...FLOMATON...MOLINO...FERRY PASS...BRENT...
WEST PENSACOLA...BELLVIEW...ENSLEY...MYRTLE GROVE...JAY...PACE...
MILTON...CRESTVIEW...WRIGHT...NICEVILLE...SEMINOLE...EGLIN AFB...
WAYNESBORO...RICHTON...BEAUMONT...NEW AUGUSTA...LEAKESVILLE...
MCLAIN...WIGGINS...LUCEDALE
153 PM CST SAT NOV 24 2012

...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO
7 AM CST SUNDAY...

* TEMPERATURE...LOWS OF 25 TO 30 DEGREES ACROSS MUCH OF THE
  REGION...EXCEPT 33 TO 37 DEGREES NEAR THE IMMEDIATE COAST.

* IMPACTS...FREEZING TEMPERATURES MAY DAMAGE OR KILL SENSITIVE PLANTS
  OR SHRUBS. ANIMALS WILL ALSO NEED EXTRA PROTECTION FROM THE COLD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY
LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION.
ANIMALS WILL ALSO NEED EXTRA PROTECTION FROM THE COLD.

&&

$$
676 
WWUS74 KMOB 250328
NPWMOB

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOBILE AL
928 PM CST SAT NOV 24 2012

...FIRST WIDESPREAD FREEZE TO IMPACT MOST OF THE REGION LATE TONIGHT
THROUGH EARLY SUNDAY MORNING...

.COLD HIGH PRESSURE WILL MOVE DIRECTLY OVER THE REGION TONIGHT.
THE COMBINATION OF CLEAR SKIES...LIGHT WINDS...AND A DRY AIRMASS
WILL RESULT IN TEMPERATURES DROPPING TO OR BELOW FREEZING OVER
THE MAJORITY OF THE REGION...WITH THE EXCEPTION BEING LOCATIONS
ALONG THE IMMEDIATE COAST.

ALZ051>064-FLZ001>006-MSZ067-075-076-078-079-251300-
/O.CON.KMOB.FZ.W.0002.121125T0500Z-121125T1300Z/
CHOCTAW-WASHINGTON-CLARKE-WILCOX-MONROE-CONECUH-BUTLER-CRENSHAW-
ESCAMBIA-COVINGTON-UPPER MOBILE-UPPER BALDWIN-LOWER MOBILE-
LOWER BALDWIN-INLAND ESCAMBIA-COASTAL ESCAMBIA-INLAND SANTA ROSA-
COASTAL SANTA ROSA-INLAND OKALOOSA-COASTAL OKALOOSA-WAYNE-PERRY-
GREENE-STONE-GEORGE-
INCLUDING THE CITIES OF...BUTLER...LISMAN...SILAS...CHATOM...
MILLRY...JACKSON...THOMASVILLE...GROVE HILL...CAMDEN...
PINE HILL...HOMEWOOD...MONROEVILLE...EVERGREEN...GREENVILLE...
LUVERNE...BRANTLEY...ATMORE...BREWTON...EAST BREWTON...
ANDALUSIA...OPP...MOBILE...PRICHARD...SARALAND...BAY MINETTE...
TILLMANS CORNER...THEODORE...DAPHNE...FAIRHOPE...FOLEY...
SPANISH FORT...CENTURY...FLOMATON...MOLINO...FERRY PASS...BRENT...
WEST PENSACOLA...BELLVIEW...ENSLEY...MYRTLE GROVE...JAY...PACE...
MILTON...CRESTVIEW...WRIGHT...NICEVILLE...SEMINOLE...EGLIN AFB...
WAYNESBORO...RICHTON...BEAUMONT...NEW AUGUSTA...LEAKESVILLE...
MCLAIN...WIGGINS...LUCEDALE
928 PM CST SAT NOV 24 2012

...FREEZE WARNING REMAINS IN EFFECT UNTIL 7 AM CST SUNDAY...

* TEMPERATURE...LOWS OF 25 TO 30 DEGREES ACROSS MUCH OF THE 
  REGION...EXCEPT 33 TO 37 DEGREES NEAR THE IMMEDIATE COAST. 

* IMPACTS...FREEZING TEMPERATURES MAY DAMAGE OR KILL SENSITIVE 
  PLANTS OR SHRUBS. ANIMALS WILL ALSO NEED EXTRA PROTECTION FROM 
  THE COLD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION. ANIMALS WILL ALSO NEED EXTRA PROTECTION
FROM THE COLD.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 24, 5:02 AM CSTFire Weather WatchMOBButler, Clarke, Conecuh, Covington, Crenshaw, Escambia and 2 more9 hr
Nov 24, 2:30 PM CSTRed Flag WarningMOBButler, Clarke, Conecuh, Covington, Crenshaw, Escambia and 2 more28 hr
Nov 24, 5:02 AM CSTRed Flag WarningMOB12 hr

Nearby

Freeze Warnings in Alabama, 2012Freeze Warnings in Mississippi, 2012Freeze Warnings in Florida, 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.