Alert archive / Alabama / Special Weather Statements in 2016

Special Weather Statement, NWS Birmingham, AL

August 18, 2016Blount County, Alabama

NWS Birmingham, AL issued this special weather statement at Aug 18, 2016, 12:33 PM CDT for Blount County, Alabama. It was in force for 27 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 18, 2016, 12:33 PM CDT (17:33 UTC)
Expired: Aug 18, 2016, 1:00 PM CDT
In force: 27 min
Issued by: NWS Birmingham, AL

County Blount County, AL

The radar

The Birmingham radar (KBMX), 65 km from the middle of the area, began a volume at 17:33 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, 5.6 hours before the alert went out and 64 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: 1277 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 972 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 11 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 18, 12:24 PM CDT, 9 minutes earlier.

Area forecast discussion, Aug 18, 12:24 PM CDT, 9 minutes before

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Hazardous weather outlook, Aug 18, 5:33 AM CDT, 7 hours before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
533 AM CDT THU AUG 18 2016

ALZ011>015-017>050-191345-
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-
533 AM CDT THU AUG 18 2016

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

.DAY ONE...OUTLOOK THROUGH TONIGHT.

HEAT INDICES WILL RISE ABOVE 100F MAINLY SOUTH OF I-20 BEGINNING
AROUND MIDDAY. ALONG AND SOUTH OF A LINE FROM DEMOPOLIS TO SELMA
TO PHENIX CITY, HEAT INDICES COULD REACH 105F FOR AN HOUR OR TWO.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

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, Aug 18, 12:33 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 18, 12:53 PM CDT	Special Weather Statement	BMX	Randolph	37 min
Aug 18, 1:29 PM CDT	Special Weather Statement	BMX	Lee	31 min
Aug 18, 1:31 PM CDT	Special Weather Statement	BMX	St. Clair	44 min
Aug 18, 1:42 PM CDT	Special Weather Statement	BMX	Jefferson	33 min
Aug 18, 1:57 PM CDT	Special Weather Statement	BMX	Clay	33 min
Aug 18, 2:05 PM CDT	Areal Flood Advisory	BMX	Etowah, St. Clair	115 min
Aug 18, 2:07 PM CDT	Special Weather Statement	BMX	Jefferson	38 min
Aug 18, 2:13 PM CDT	Special Weather Statement	BMX	DeKalb	32 min
Aug 18, 2:26 PM CDT	Special Weather Statement	BMX	Coosa	34 min
Aug 18, 2:40 PM CDT	Special Weather Statement	BMX	Cleburne	35 min
Aug 18, 3:02 PM CDT	Special Weather Statement	BMX	Shelby	43 min
Aug 18, 3:43 PM CDT	Special Weather Statement	BMX	Talladega	32 min
Aug 18, 3:55 PM CDT	Special Weather Statement	BMX	Coosa	35 min
Aug 18, 4:05 PM CDT	Special Weather Statement	BMX	Shelby	40 min
Aug 18, 4:22 PM CDT	Areal Flood Advisory	BMX	Shelby	3 hr
Aug 18, 4:33 PM CDT	Special Weather Statement	BMX	Elmore	27 min
Aug 18, 4:50 PM CDT	Special Weather Statement	BMX	Chilton	25 min
Aug 18, 5:33 PM CDT	Areal Flood Advisory	BMX	Jefferson	117 min
Aug 18, 6:13 PM CDT	Special Weather Statement	BMX	Jefferson	32 min
Aug 18, 6:23 PM CDT	Special Weather Statement	BMX	Autauga	52 min
Aug 18, 6:26 PM CDT	Special Weather Statement	BMX	Bibb	49 min
Aug 18, 6:36 PM CDT	Special Weather Statement	BMX	Pickens	24 min
Aug 18, 6:44 PM CDT	Areal Flood Advisory	BMX	Jefferson, Walker	2 hr
Aug 18, 6:45 PM CDT	Special Weather Statement	BMX	Tuscaloosa	30 min

Nearby

Special Weather Statements in Alabama, 2016 Every special weather statement in 2016

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.