Alert archive / Alabama / Special Weather Statements in 2012

Special Weather Statement, NWS Birmingham, AL

August 16, 2012Sumter County, Alabama

NWS Birmingham, AL issued this special weather statement at Aug 16, 2012, 1:44 PM CDT for Sumter County, Alabama. It was in force for 31 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 16, 2012, 1:44 PM CDT (18:44 UTC)
Expired: Aug 16, 2012, 2:15 PM CDT
In force: 31 min
Issued by: NWS Birmingham, AL

County Sumter County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 6.7 hours before the alert went out and 137 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: 761 J/kg
Mixed-layer CIN: -99 J/kg
Mixed-layer LCL: 1023 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 59 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 16, 1:12 PM CDT, 32 minutes earlier.

Area forecast discussion, Aug 16, 1:12 PM CDT, 32 minutes before

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Hazardous weather outlook, Aug 16, 10:32 AM CDT, 3 hours 12 minutes before

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In the hours before

Special weather statement, Aug 16, 12:36 PM CDT, 1 hour 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1236 PM CDT THU AUG 16 2012

ALZ030>032-039-161800-
GREENE AL-HALE AL-MARENGO AL-SUMTER AL-
1236 PM CDT THU AUG 16 2012

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN SUMTER...NORTHERN
MARENGO...SOUTHWESTERN HALE AND SOUTHEASTERN GREENE COUNTIES UNTIL
100 PM CDT...

AT 1236 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR DEMOPOLIS...MOVING SOUTHEAST AT 5 MPH.

PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM...ALONG WITH HEAVY RAIN.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  DEMOPOLIS...
  ARCOLA...
  OLD SPRING HILL...
  GALLION...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

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 3259 8766 3237 8777 3250 8799 3262 8792
TIME...MOT...LOC 1736Z 300DEG 5KT 3253 8787

19

Special weather statement, Aug 16, 1:22 PM CDT, 22 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
122 PM CDT THU AUG 16 2012

ALZ030-161845-
SUMTER AL-
122 PM CDT THU AUG 16 2012

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN SUMTER COUNTY UNTIL 145
PM CDT...

AT 122 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A CLUSTER
OF STRONG THUNDERSTORMS 6 MILES SOUTHEAST OF YORK...MOVING SOUTHEAST
AT 10 MPH.

PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  KINTERBISH...
  COATOPA...
  DUG HILL...
  LILITA...
  BELLAMY...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

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 3256 8839 3249 8794 3247 8796 3243 8804
      3238 8805 3237 8802 3234 8799 3234 8797
      3233 8795 3231 8794 3231 8842
TIME...MOT...LOC 1822Z 302DEG 10KT 3242 8823

19

Special weather statement, Aug 16, 1:44 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
144 PM CDT THU AUG 16 2012

ALZ030-161915-
SUMTER AL-
144 PM CDT THU AUG 16 2012

...SIGNIFICANT WEATHER ADVISORY FOR SUMTER COUNTY UNTIL 215 PM CDT...

AT 142 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM THE UNIVERSITY OF WEST
ALABAMA TO BOYD...AND MOVING SOUTHEAST AT 15 MPH.

PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE
STORMS...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  LIVINGSTON...
  CUBA...
  YORK...
  THE UNIVERSITY OF WEST ALABAMA...
  BLUFFPORT...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

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 3265 8838 3269 8813 3268 8806 3265 8805
      3263 8808 3259 8805 3263 8794 3261 8784
      3259 8786 3261 8787 3260 8790 3252 8784
      3253 8790 3242 8804 3238 8805 3231 8793
      3230 8794 3231 8843
TIME...MOT...LOC 1844Z 301DEG 14KT 3261 8815 3257 8834

19

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 16, 12:36 PM CDT	Special Weather Statement	BMX	Marengo	24 min
Aug 16, 1:22 PM CDT	Special Weather Statement	BMX	Sumter	23 min
Aug 16, 2:05 PM CDT	Areal Flood Advisory	BMX	Sumter	115 min
Aug 16, 2:16 PM CDT	Special Weather Statement	BMX	Hale	29 min
Aug 16, 3:00 PM CDT	Special Weather Statement	BMX	Tuscaloosa	30 min
Aug 16, 3:23 PM CDT	Areal Flood Advisory	BMX	Tuscaloosa	112 min
Aug 16, 3:30 PM CDT	Special Weather Statement	BMX	Marengo	30 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.