Alert archive / Alabama / Special Weather Statements in 2012

Special Weather Statement, NWS Birmingham, AL

July 17, 2012Dallas County, Alabama

NWS Birmingham, AL issued this special weather statement at Jul 17, 2012, 6:52 PM CDT for Dallas County, Alabama. It was in force for 38 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 17, 2012, 6:52 PM CDT (23:52 UTC)
Expired: Jul 17, 2012, 7:30 PM CDT
In force: 38 min
Issued by: NWS Birmingham, AL

County Dallas County, AL

The radar

The Birmingham radar (KBMX), 89 km from the middle of the area, began a volume at 23:55 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 12:00Z, 11.9 hours before the alert went out and 89 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: 1502 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 1108 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 35 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 17, 6:40 PM CDT, 12 minutes earlier.

Area forecast discussion, Jul 17, 6:40 PM CDT, 12 minutes before

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Hazardous weather outlook, Jul 17, 12:37 PM CDT, 6 hours 15 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1237 PM CDT TUE JUL 17 2012

ALZ011>015-017>050-181745-
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-
1237 PM CDT TUE JUL 17 2012

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

ISOLATED SEVERE THUNDERSTORMS...WITH WIND GUSTS GREATER THAN 60
MPH...ARE POSSIBLE FROM NOON THROUGH 9 PM TODAY AREAWIDE.

.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

Local storm report, Jul 17, 5:30 PM CDT, 1 hour 22 minutes before

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Local storm report, Jul 17, 5:34 PM CDT, 1 hour 18 minutes before

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Special weather statement, Jul 17, 5:44 PM CDT, 1 hour 8 minutes before

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Local storm report, Jul 17, 5:53 PM CDT, 59 minutes before

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Local storm report, Jul 17, 6:36 PM CDT, 16 minutes before

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Special weather statement, Jul 17, 6:52 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
Jul 17, 1:08 PM CDT	Special Weather Statement	BMX	Elmore	37 min
Jul 17, 1:33 PM CDT	Special Weather Statement	BMX	Chilton	27 min
Jul 17, 2:04 PM CDT	Special Weather Statement	BMX	Elmore	26 min
Jul 17, 2:50 PM CDT	Special Weather Statement	BMX	Clay	25 min
Jul 17, 2:52 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Randolph	38 min
Jul 17, 2:59 PM CDT	Special Weather Statement	BMX	Montgomery	31 min
Jul 17, 3:03 PM CDT	Special Weather Statement	BMX	Elmore	27 min
Jul 17, 3:42 PM CDT	Special Weather Statement	BMX	Macon	33 min
Jul 17, 3:47 PM CDT	Special Weather Statement	BMX	Chilton	28 min
Jul 17, 4:00 PM CDT	Special Weather Statement	BMX	Lowndes	30 min
Jul 17, 4:09 PM CDT	Areal Flood Advisory	BMX	Randolph	3 hr
Jul 17, 4:17 PM CDT	Special Weather Statement	BMX	Bullock	43 min
Jul 17, 4:32 PM CDT	Special Weather Statement	BMX	Dallas	43 min
Jul 17, 4:56 PM CDT	Special Weather Statement	BMX	Barbour	49 min
Jul 17, 5:04 PM CDT	Areal Flood Advisory	BMX	Barbour, Bullock, Pike	3 hr
Jul 17, 5:14 PM CDT	Special Weather Statement	BMX	Lee	31 min
Jul 17, 5:44 PM CDT	Special Weather Statement	BMX	Barbour	31 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; radar from the NEXRAD Level II archive.