Alert archive / Alabama / Special Weather Statements in 2012

Special Weather Statement, NWS Birmingham, AL

March 1, 2012Randolph County, Alabama

NWS Birmingham, AL issued this special weather statement at Mar 1, 2012, 3:30 AM CST for Randolph County, Alabama. It was in force for 45 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: Mar 1, 2012, 3:30 AM CST (09:30 UTC)
Expired: Mar 1, 2012, 4:15 AM CST
In force: 45 min
Issued by: NWS Birmingham, AL

County Randolph County, AL

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 9.5 hours before the alert went out and 105 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: 355 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 874 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: 228 m²/s²
0-3 km storm-relative helicity: 216 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 3.7

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 Mar 1, 12:04 AM CST, 3 hours 26 minutes earlier.

Area forecast discussion, Mar 1, 12:04 AM CST, 3 hours 26 minutes before

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Hazardous weather outlook, Feb 29, 9:00 PM CST, 6 hours 30 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
900 PM CST WED FEB 29 2012

ALZ011>015-017>050-020300-
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-
900 PM CST WED FEB 29 2012

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

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

A FEW STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE BY THURSDAY
AFTERNOON INTO EARLY EVENING AS A WARM FRONT MOVES NORTHWARD
ACROSS CENTRAL ALABAMA. THE MAIN HAZARDOUS THREATS INCLUDE
DAMAGING STRAIGHT LINE WINDS AND HAIL.

SEVERE THUNDERSTORMS WILL ONCE AGAIN BE POSSIBLE LATE FRIDAY
AFTERNOON NORTHWEST INTO EARLY SATURDAY FOR SOUTHEASTERN AREAS ACROSS
CENTRAL ALABAMA. THE MAIN THREATS INCLUDE DAMAGING STRAIGHT LINE
WINDS...LOCALLY HEAVY RAIN...AND ISOLATED TORNADOES. THESE STORMS
WILL DEVELOP ALONG AND NEAR A COLD FRONT MOVING THROUGH THE STATE.
STAY TUNED FOR UPDATES ON THIS DEVELOPING WEATHER SITUATION.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT MAY BE NEEDED
THURSDAY AFTERNOON AND EVENING...AND AGAIN LATE FRIDAY INTO EARLY
SATURDAY.

08/MNK

In the hours before

Special weather statement, Mar 1, 3:06 AM CST, 24 minutes before

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Special weather statement, Mar 1, 3:30 AM CST, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 29, 7:14 PM CST	Special Weather Statement	BMX	Calhoun, St. Clair	46 min
Mar 1, 1:41 AM CST	Areal Flood Advisory	BMX	Bibb, Greene, Pickens, Tuscaloosa	3 hr
Mar 1, 3:06 AM CST	Special Weather Statement	BMX	Clay, Talladega	39 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.