Alert archive / Alabama / Special Weather Statements in 2012

Special Weather Statement, NWS Birmingham, AL

July 3, 2012Chambers County, Alabama

NWS Birmingham, AL issued this special weather statement at Jul 3, 2012, 1:08 PM CDT for Chambers County, Alabama. It was in force for 37 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: Jul 3, 2012, 1:08 PM CDT (18:08 UTC)
Expired: Jul 3, 2012, 1:45 PM CDT
In force: 37 min
Issued by: NWS Birmingham, AL

County Chambers County, AL

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.1 hours before the alert went out and 113 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: 1364 J/kg
Mixed-layer CIN: -124 J/kg
Mixed-layer LCL: 1287 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 16 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.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Birmingham, AL wrote its last area forecast discussion before this special weather statement went out at Jul 3, 12:08 PM CDT, 1 hour earlier.

Area forecast discussion, Jul 3, 12:08 PM CDT, 1 hour before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1208 PM CDT TUE JUL 3 2012

.UPDATE...
FOR 18Z AVIATION.

&&

.DISCUSSION...

TEMPERATURE TRENDS THIS MORNING ARE GOING TO WARRANT THE ISSUANCE
OF A HEAT ADVISORY FOR THIS AFTERNOON. A HANDFUL OF PLACES WILL SEE
TRIPLE DIGITS TODAY...AND FOR THOSE WHO DON'T...YOU WILL LIKELY
REACH 105 OR BETTER ON THE HEAT INDEX CHART. HAVE ISSUED THIS
THROUGH 7PM THIS EVENING...AND WE ARE MULLING OVER TOMORROW'S
TEMPERATURES AS WELL. THAT WILL BE INCLUDED IN THIS AFTERNOON'S
FULL FORECAST PACKAGE.

I LOOKED OVER THE MESOSCALE THIS MORNING TO SEE IF I COULD PICK
OUT A PARTICULAR AREA THAT MAY BE MORE OR LESS FAVORED FOR
CONVECTION THIS AFTERNOON. WITH A DIFFUSE UPPER AND SURFACE
RIDGE...THERE WILL BE THE POSSIBILITY OF SOME SPARK. I THINK THAT
BEST SHOT WILL BE EAST OF INTERSTATE 65 AS THEY SHOULD HAVE THE
BETTER LOW LEVEL MOISTURE...AND ARE LESS LIKELY TO MIX OUT. THE
DOWN SIDE IS I WASN'T ABLE TO FIND A FOCUSING MECHANISM FOR
INITIATION. THAT'S NOT TO SAY THERE ISN'T ONE OUT THERE...BUT I
COULDN'T LOCATE IT. SO...I WON'T CHANGE POPS ACROSS THE EAST, BUT
I'LL LOWER THEM SLIGHTLY ACROSS THE WEST AS THE MIXING OUT SHOULD
HELP TO STYMIE ANY GROWTH.

UPDATES OUT SHORTLY.

27

&&

.AVIATION...
18Z TAF DISCUSSION.

MOSTLY VFR CONDITIONS FOR ALL SITES.  THE ONLY THING TO WATCH FOR
THIS AFTERNOON WILL BE A VCTS AT KANB KMGM AND KTOI.  ANY SITE THAT
SEES A TS OVERHEAD WILL LIKELY SEE A SHORT REDUCTION IN CIGS/VIS.
TONIGHT THESE SAME SITE WILL HAVE TO WATCH FOR REDUCED VIS AFTER
MIDNIGHT AS THE LOW LEVEL MOISTURE WILL HELP TO PRODUCE MVFR FOG.
WINDS WILL GENERALLY BE LIGHT AND OUT OF THE NORTHWEST.

27

&&

.BMX WATCHES/WARNINGS/ADVISORIES...

HEAT ADVISORY FROM 2 PM THIS AFTERNOON TO 7 PM CDT THIS EVENING
FOR ALL OF CENTRAL ALABAMA

&&

27

Hazardous weather outlook, Jul 3, 11:01 AM CDT, 2 hours 7 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1101 AM CDT TUE JUL 3 2012

ALZ011>015-017>050-040300-
AUTAUGA-BARBOUR-BIBB-BLOUNT-BULLOCK-CALHOUN-CHAMBERS-CHEROKEE-
CHILTON-CLAY-CLEBURNE-COOSA-DALLAS-ELMORE-ETOWAH-FAYETTE-GREENE-HALE-
JEFFERSON-LAMAR-LEE-LOWNDES-MACON-MARENGO-MARION-MONTGOMERY-PERRY-
PICKENS-PIKE-RANDOLPH-RUSSELL-SHELBY-ST CLAIR-SUMTER-TALLADEGA-
TALLAPOOSA-TUSCALOOSA-WALKER-WINSTON-
1101 AM CDT TUE JUL 3 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COUNTIES SERVED BY THE
NATIONAL WEATHER SERVICE OFFICE IN BIRMINGHAM.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

A HEAT ADVISORY IS IN EFFECT FOR ALL OF CENTRAL ALABAMA THROUGH
7 PM. TEMPERATURES ARE FORECAST TO REACH THE UPPER 90S TO AROUND
100 DEGREES THIS AFTERNOON AND HEAT INDICES WILL CLIMB TO BETWEEN
100 AND 107 DEGREES.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT IS NOT
EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jul 3, 1:08 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
108 PM CDT TUE JUL 3 2012

ALZ037-038-031845-
CHAMBERS AL-TALLAPOOSA AL-
108 PM CDT TUE JUL 3 2012

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN CHAMBERS AND EASTERN
TALLAPOOSA COUNTIES UNTIL 145 PM CDT...

AT 104 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A CLUSTER
OF STRONG THUNDERSTORMS NEAR RIDGE GROVE...OR 9 MILES NORTHEAST OF
CAMP HILL...MOVING SOUTHEAST AT 10 MPH.

PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  CAMP HILL...
  WEST CHAMBERS...
  STURKIE...
  OAK BOWERY...
  WAVERLY...

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 3273 8541 3275 8543 3273 8543 3274 8576
      3301 8578 3308 8554 3273 8532
TIME...MOT...LOC 1807Z 326DEG 10KT 3289 8555

MA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 10:57 AM CDT	Heat Advisory	BMX	Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more	8 hr
Jul 3, 1:29 PM CDT	Special Weather Statement	BMX	Russell	46 min
Jul 3, 1:40 PM CDT	Special Weather Statement	BMX	Chambers, Tallapoosa	50 min
Jul 3, 2:04 PM CDT	Special Weather Statement	BMX	Randolph	41 min
Jul 3, 2:11 PM CDT	Special Weather Statement	BMX	Russell	49 min
Jul 3, 2:25 PM CDT	Severe Thunderstorm Warning	BMX	Lee, Macon, Russell	35 min
Jul 3, 2:54 PM CDT	Special Weather Statement	BMX	Bullock, Macon	51 min
Jul 3, 3:00 PM CDT	Special Weather Statement	BMX	Lee	45 min
Jul 3, 3:18 PM CDT	Special Weather Statement	BMX	Barbour	42 min
Jul 3, 3:37 PM CDT	Special Weather Statement	BMX	Macon	53 min
Jul 3, 3:40 PM CDT	Special Weather Statement	BMX	Bullock	50 min
Jul 3, 3:43 PM CDT	Severe Thunderstorm Warning	BMX	Elmore	20 min
Jul 3, 3:56 PM CDT	Special Weather Statement	BMX	Barbour	49 min
Jul 3, 4:13 PM CDT	Special Weather Statement	BMX	Pike	47 min
Jul 3, 4:33 PM CDT	Special Weather Statement	BMX	Lowndes	42 min
Jul 3, 4:37 PM CDT	Special Weather Statement	BMX	Clay	38 min
Jul 3, 5:15 PM CDT	Severe Thunderstorm Warning	BMX	Lowndes	30 min
Jul 3, 5:59 PM CDT	Special Weather Statement	BMX	Lowndes	46 min
Jul 3, 6:27 PM CDT	Special Weather Statement	BMX	Coosa	48 min
Jul 3, 6:29 PM CDT	Special Weather Statement	BMX	Autauga	46 min

Nearby

Special Weather Statements in Alabama, 2012 Every special weather statement 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.