Alert archive / Alabama / Special Weather Statements in 2013

Special Weather Statement, NWS Birmingham, AL

August 7, 2013Chambers County, Tallapoosa County, Alabama

NWS Birmingham, AL issued this special weather statement at Aug 7, 2013, 7:48 PM CDT for Chambers County, Tallapoosa County, Alabama. It was in force for 42 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: Aug 7, 2013, 7:48 PM CDT (00:48 UTC)
Expired: Aug 7, 2013, 8:30 PM CDT
In force: 42 min
Issued by: NWS Birmingham, AL

Counties Chambers County, AL, Tallapoosa County, AL

The radar

The Maxwell AFB radar (KMXX), 43 km from the middle of the area, began a volume at 00:50 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.8 hours before the alert went out and 110 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: 731 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1037 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: 22 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 Aug 7, 7:11 PM CDT, 37 minutes earlier.

Area forecast discussion, Aug 7, 7:11 PM CDT, 37 minutes before

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Hazardous weather outlook, Aug 7, 12:55 PM CDT, 6 hours 53 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1255 PM CDT WED AUG 7 2013

ALZ011>015-017>050-081755-
MARION-LAMAR-FAYETTE-WINSTON-WALKER-BLOUNT-ETOWAH-CALHOUN-CHEROKEE-
CLEBURNE-PICKENS-TUSCALOOSA-JEFFERSON-SHELBY-ST. CLAIR-TALLADEGA-
CLAY-RANDOLPH-SUMTER-GREENE-HALE-PERRY-BIBB-CHILTON-COOSA-TALLAPOOSA-
CHAMBERS-MARENGO-DALLAS-AUTAUGA-LOWNDES-ELMORE-MONTGOMERY-MACON-
BULLOCK-LEE-RUSSELL-PIKE-BARBOUR-
1255 PM CDT WED AUG 7 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

ISOLATED AREAS OF DAMAGING WINDS GREATER THAN 60 MPH AND HEAVY
RAINFALL WILL BE POSSIBLE ACROSS ALL OF CENTRAL ALABAMA THROUGH 8 PM.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT MAY BE
NEEDED THIS AFTERNOON.

08

In the hours before

Local storm report, Aug 7, 7:24 PM CDT, 24 minutes before

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Local storm report, Aug 7, 7:26 PM CDT, 22 minutes before

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Special weather statement, Aug 7, 7:26 PM CDT, 22 minutes before

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Local storm report, Aug 7, 7:27 PM CDT, 21 minutes before

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Local storm report, Aug 7, 7:29 PM CDT, 19 minutes before

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Special weather statement, Aug 7, 7:48 PM CDT, 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
Aug 7, 7:19 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Randolph	41 min
Aug 7, 7:26 PM CDT	Special Weather Statement	BMX	Hale	49 min
Aug 7, 10:24 PM CDT	Special Weather Statement	BMX	Lowndes	51 min
Aug 7, 10:35 PM CDT	Special Weather Statement	BMX	Pike	40 min
Aug 8, 1:06 PM CDT	Special Weather Statement	BMX	Jefferson	39 min
Aug 8, 1:40 PM CDT	Flash Flood Warning	BMX	Jefferson	3 hr
Aug 8, 1:49 PM CDT	Special Weather Statement	BMX	Lee	41 min
Aug 8, 3:20 PM CDT	Areal Flood Advisory	BMX	Montgomery	115 min
Aug 8, 3:25 PM CDT	Special Weather Statement	BMX	Chambers	50 min
Aug 8, 5:36 PM CDT	Special Weather Statement	BMX	Shelby	24 min

Nearby

Special Weather Statements in Alabama, 2013 Every special weather statement in 2013

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.