Alert archive / Alabama / Special Weather Statements in 2012

Special Weather Statement, NWS Birmingham, AL

December 25, 2012Tuscaloosa County, Alabama

NWS Birmingham, AL issued this special weather statement at Dec 25, 2012, 1:40 PM CST for Tuscaloosa County, Alabama. It was in force for 50 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: Dec 25, 2012, 1:40 PM CST (19:40 UTC)
Expired: Dec 25, 2012, 2:30 PM CST
In force: 50 min
Issued by: NWS Birmingham, AL

County Tuscaloosa County, AL

The radar

The Birmingham radar (KBMX), 74 km from the middle of the area, began a volume at 19:43 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, 7.7 hours before the alert went out and 73 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1008 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 114 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 Dec 25, 1:32 PM CST, 8 minutes earlier.

Area forecast discussion, Dec 25, 1:32 PM CST, 8 minutes before

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Hazardous weather outlook, Dec 25, 10:23 AM CST, 3 hours 17 minutes before

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In the hours before

Special weather statement, Dec 25, 1:40 PM CST, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
140 PM CST TUE DEC 25 2012

ALZ023-032-252030-
HALE AL-TUSCALOOSA AL-
140 PM CST TUE DEC 25 2012

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN TUSCALOOSA AND NORTHERN
HALE COUNTIES UNTIL 230 PM CST...

AT 138 PM CST...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR MOUNDVILLE...OR 16 MILES SOUTH OF NORTHPORT...
MOVING NORTHEAST AT 35 MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  TUSCALOOSA...
  HOLT...
  SHELTON STATE COMMUNITY COLLEGE...
  MCFARLAND MALL...
  BRYANT DENNY STADIUM...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

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 3347 8737 3330 8715 3290 8764 3297 8774
      3299 8771 3302 8772 3302 8780
TIME...MOT...LOC 1941Z 222DEG 29KT 3303 8764

MA

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 25, 10:10 AM CST	Dense Fog Advisory	BMX	Autauga, Barbour, Blount, Bullock, Calhoun, Chambers and 24 more	110 min
Dec 25, 2:22 PM CST	Wind Advisory	BMX	Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more	25 hr
Dec 25, 2:35 PM CST	Severe Thunderstorm Warning	BMX	Jefferson, Tuscaloosa	40 min
Dec 25, 2:59 PM CST	Severe Thunderstorm Warning	BMX	Marengo	30 min
Dec 25, 4:13 PM CST	Special Weather Statement	BMX	Sumter	32 min
Dec 25, 4:33 PM CST	Severe Thunderstorm Warning	BMX	Greene, Pickens, Sumter	42 min
Dec 25, 5:04 PM CST	Areal Flood Advisory	BMX	Greene, Hale, Marengo, Pickens, Sumter, Tuscaloosa	3 hr
Dec 25, 5:08 PM CST	Severe Thunderstorm Warning	BMX	Tuscaloosa	67 min
Dec 25, 5:15 PM CST	Severe Thunderstorm Warning	BMX	Greene, Pickens	15 min
Dec 25, 5:23 PM CST	Tornado Warning	BMX	Marengo, Sumter	29 min
Dec 25, 5:47 PM CST	Severe Thunderstorm Warning	BMX	Greene, Hale, Marengo, Sumter	47 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.